Antenna assembly and electronic equipment

Abstract

The invention provides an antenna assembly and electronic equipment. The antenna assembly comprises a first radiation branch knot, a second radiation branch knot, a feed source and a signal processing unit. The first radiation branch knot comprises a first feeding point, and the second radiation branch knot comprises a second feeding point; the feed source is used for providing a feed signal. The signal processing unit is connected among the feed source, the first feed point of the first radiation branch knot and the second feed point of the second radiation branch knot, and is used for converting a feed signal provided by the feed source into a first feed signal and a second feed signal, and respectively outputting the first feed signal and the second feed signal to the first feed point and the second feed point, the first feed signal and the second feed signal have the same frequency, and the first radiation branch knot and the second radiation branch knot integrally work in a radiation mode under excitation of the first feed signal and the second feed signal respectively so as to support receiving and transmitting of electromagnetic wave signals of a preset frequency band. According to the invention, the SAR value can be effectively reduced while the antenna performance is ensured.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to an antenna assembly and an electronic device having the antenna assembly. Background Art

[0002] At present, with the popularization of 5G antennas, people's communication experience is getting better and better, but the number of antennas included in electronic devices is also increasing. Generally speaking, in addition to meeting the requirements of communication performance, the antenna radiation energy must also meet the compliance of SAR (Specific Absorption Rate), that is, meet safety requirements. SAR is usually proportional to the antenna radiation energy. In some cases, in order to avoid the SAR value, the antenna radiation energy often has to be reduced, which affects the antenna radiation performance. Therefore, how to effectively ensure the radiation performance of the antenna and avoid exceeding the SAR value has become a problem that needs to be solved. Summary of the invention

[0003] The present application provides an antenna assembly and an electronic device to solve the above problems.

[0004] In a first aspect, an antenna assembly is provided, comprising a first radiating branch, a second radiating branch, a feed source, and a signal processing unit. The first radiating branch comprises a first feeding point, and the second radiating branch comprises a second feeding point; the feed source is used to provide a feeding signal. The signal processing unit is connected between the feed source, the first feeding point of the first radiating branch, and the second feeding point of the second radiating branch, and is used to convert the feeding signal provided by the feed source into a first feeding signal and a second feeding signal, and output them to the first feeding point and the second feeding point, respectively, wherein the first feeding signal and the second feeding signal have the same frequency, and the first radiating branch and the second radiating branch respectively work in a radiation mode as a whole under the excitation of the first feeding signal and the second feeding signal to support the reception and transmission of electromagnetic wave signals in a preset frequency band.

[0005] In the second aspect, an electronic device is also provided, the electronic device comprising an antenna assembly. The antenna assembly comprises a first radiating branch, a second radiating branch, a feed source and a signal processing unit. The first radiating branch comprises a first feeding point, and the second radiating branch comprises a second feeding point; the feed source is used to provide a feeding signal. The signal processing unit is connected between the feed source, the first feeding point of the first radiating branch and the second feeding point of the second radiating branch, and is used to convert the feeding signal provided by the feed source into a first feeding signal and a second feeding signal, and output them to the first feeding point and the second feeding point respectively, wherein the first feeding signal and the second feeding signal have the same frequency, and the first radiating branch and the second radiating branch respectively work in a radiation mode as a whole under the excitation of the first feeding signal and the second feeding signal to support the reception and transmission of electromagnetic wave signals in a preset frequency band.

[0006] The antenna assembly and electronic device of the present application can disperse the radiation energy to the two radiation branches by feeding the two radiation branches at the same time, thereby reducing the SAR value. Since the two radiation branches are excited and work in the radiation mode as a whole to support the reception and transmission of electromagnetic wave signals in the preset frequency band, the radiation performance can be effectively ensured. Therefore, the antenna assembly 1 of the present application can effectively ensure the radiation performance of the antenna and avoid exceeding the SAR value. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the background technology, the drawings required for use in the embodiments of the present application or the background technology will be described below.

[0008] Figure 1 It is a simple structural diagram of an antenna assembly in one embodiment of the present application.

[0009] Figure 2 Schematic diagram of the current generated by the antenna assembly in some embodiments of the present application.

[0010] Figure 3 It is a schematic diagram of the simple structure and current distribution of a first reference antenna component.

[0011] Figure 4 It is a simple structural diagram of a variation of the antenna assembly in some embodiments of the present application.

[0012] Figure 5 Schematic diagram of another simple structure and current distribution of an antenna assembly in some embodiments of the present application.

[0013] Figure 6 is a schematic diagram of a simple structure and current distribution of a second reference antenna component.

[0014] Figure 7Schematic diagram of the internal structure of a signal processing unit in some embodiments of the present application.

[0015] Figure 8 Schematic diagram of another simple structure and current distribution of an antenna assembly in some embodiments of the present application.

[0016] Fig. 9 is a schematic diagram of a simple structure and current distribution of a third reference antenna assembly.

[0017] Fig.10 Schematic diagram of another simple structure and current distribution of the antenna assembly in some embodiments of the present application.

[0018] Fig.11 It is a simple structural schematic diagram of a further variation of the antenna assembly in some embodiments of the present application.

[0019] Fig.12 It is a simple structural diagram of a further variation of the antenna assembly in some embodiments of the present application.

[0020] Fig.13 It is a simple structural diagram of a further variation of the antenna assembly in some embodiments of the present application.

[0021] Fig.14 Schematic diagram of another structure of a signal processing unit in some embodiments of the present application.

[0022] Fig.15 Schematic diagram of a matching unit in some embodiments of the present application.

[0023] Fig.16 This is a structural block diagram of an electronic device in some embodiments of the present application.

[0024] Fig.17 It is a schematic plan view of an electronic device in some embodiments of the present application.

[0025] Fig.18 A schematic diagram of return loss (S parameter) and antenna efficiency of an electronic device in some embodiments of the present application.

[0026] Fig.19 Schematic diagram comparing the return losses of the electronic devices in some embodiments of the present application and a reference electronic device in free space and hand-held scenarios.

[0027] Fig. 20 Schematic diagram comparing the antenna efficiency of the electronic devices in some embodiments of the present application and a reference electronic device in free space and hand-held scenarios.

[0028] Fig.21Schematic diagram of radiation energy of electronic devices in some embodiments of the present application and a reference electronic device.

[0029] Fig. 22 Another schematic plan view of an electronic device in some embodiments of the present application.

[0030] Fig.23 It is another plan view schematically showing a variation of the electronic device in some embodiments of the present application.

[0031] Fig.24 Schematic diagram of return loss comparison between electronic devices in some embodiments of the present application and a reference electronic device.

[0032] Fig.25 A schematic diagram comparing the antenna efficiency of electronic devices in some embodiments of the present application and a reference electronic device.

[0033] Fig.26 Schematic diagram comparing the return loss of the electronic device in some embodiments of the present application and a reference electronic device in a folded state.

[0034] Fig. 27 A schematic diagram comparing the antenna efficiency of the electronic devices in some embodiments of the present application and a reference electronic device in a folded state.

[0035] Fig.28 Another return loss comparison diagram of the electronic device in some embodiments of the present application and a reference electronic device in a folded state.

[0036] Fig.29 It is another schematic diagram comparing the return loss of the electronic device in some embodiments of the present application and a reference electronic device in a folded state.

[0037] Fig.30 It is another schematic diagram comparing the antenna efficiency of the electronic device in some embodiments of the present application and a reference electronic device in a folded state.

[0038] Fig.31 It is yet another schematic diagram comparing the return loss of the electronic device in some embodiments of the present application and a reference electronic device in a folded state.

[0039] Fig.32 It is another schematic diagram comparing the antenna efficiency of the electronic devices in some embodiments of the present application and a reference electronic device in a folded state.

[0040] Fig.33 Another schematic diagram of radiation energy of an electronic device in some embodiments of the present application and a reference electronic device.

[0041] Fig.34It is another schematic diagram of radiation energy of the electronic device in some embodiments of the present application and a reference electronic device.

[0042] Fig.35 It is another schematic plan view of the electronic device in some embodiments of the present application.

[0043] Fig.36 It is another schematic diagram comparing return losses of the electronic devices in some embodiments of the present application and a reference electronic device.

[0044] Fig.37 It is another schematic diagram comparing the antenna efficiency of the electronic devices in some embodiments of the present application and a reference electronic device.

[0045] Fig.38 It is another schematic diagram comparing the return loss of the electronic device in some embodiments of the present application and a reference electronic device in free space and in the left-hand holding scenario respectively.

[0046] Fig.39 It is another schematic diagram comparing the antenna efficiency of the electronic device in some embodiments of the present application and a reference electronic device in free space and in the left-hand holding scenario respectively.

[0047] Fig.40 It is another schematic diagram of radiation energy of the electronic device in some embodiments of the present application and a reference electronic device.

[0048] Fig.41 It is yet another schematic plan view of an electronic device in some embodiments of the present application.

[0049] Fig.42 It is another return loss comparison diagram of the electronic devices in some embodiments of the present application and a reference electronic device.

[0050] Fig.43 FIG. 4 is another schematic diagram comparing the antenna efficiency of the electronic device in some embodiments of the present application and a reference electronic device.

[0051] Fig.44 It is yet another schematic diagram of radiation energy of the electronic device in some embodiments of the present application and a reference electronic device.

[0052] Fig.45 Other plan view schematic diagrams of electronic devices in some embodiments of the present application.

[0053] Fig.46 A schematic diagram comparing the return losses of electronic devices in some embodiments of the present application and a reference electronic device in multiple frequency bands.

[0054] Fig.47A schematic diagram comparing antenna efficiencies of electronic devices in some embodiments of the present application and a reference electronic device in multiple frequency bands. DETAILED DESCRIPTION

[0055] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0056] In the description of the embodiments of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "thickness", "width", etc. is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not imply or indicate that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. The term "connection" in this application includes the meanings of physical structural connection, electrical connection, direct connection or indirect connection, which can be determined according to the required connection situation. In the description of the embodiments of the present invention, the terms "first", "second", etc. are not specific, but are used to distinguish objects with the same name. If there is a description, the objects with the same name referred to by the terms "first", "second", etc. may be the same object. Among them, in this application, the term "A and / or B" includes: "A", "B", "A and B" in any one of the cases. Among them, the term "A / B" generally refers to "A" or "B".

[0057] See also Figure 1 , is a schematic diagram of a simple structure of an antenna assembly 1 in an embodiment of the present application. Figure 1 As shown, the antenna assembly 1 includes a first radiating branch 11, a second radiating branch 12, a feed source 13 and a signal processing unit 14. The first radiating branch 11 includes a first feeding point F1, the second radiating branch 12 includes a second feeding point F2, and the feed source 13 is used to provide a feeding signal. The signal processing unit 14 is connected between the feed source 13, the first feeding point F1 of the first radiating branch 11 and the second feeding point F2 of the second radiating branch 12, and is used to convert the feeding signal provided by the feed source 13 into a first feeding signal and a second feeding signal, and output them to the first feeding point F1 and the second feeding point F2 respectively, wherein the first feeding signal and the second feeding signal have the same frequency, and the first radiating branch 11 and the second radiating branch 12 are respectively driven by the first feeding signal and the second feeding signal to work in a radiation mode as a whole to support the reception and transmission of electromagnetic wave signals in a preset frequency band.

[0058] Thus, the antenna assembly 1 of the present application can disperse the radiation energy to the two radiation branches by feeding the two radiation branches at the same time, thereby reducing the SAR value. Since the two radiation branches are excited and work in the radiation mode as a whole to support the reception and transmission of electromagnetic wave signals in the preset frequency band, the radiation performance can be effectively ensured. Thus, the antenna assembly 1 of the present application can effectively ensure the radiation performance of the antenna and avoid exceeding the SAR value.

[0059] In some embodiments, the electrical lengths of the first radiation branch 11 and the second radiation branch 12 are both λ / 4, where λ is the wavelength corresponding to the preset frequency band.

[0060] That is, in some embodiments, the electrical lengths of the first radiation branch 11 and the second radiation branch 12 are approximately equal and are approximately equal to λ / 4, so that the first radiation branch 11 and the second radiation branch 12 can both resonate in the preset frequency band to achieve double resonance, thereby effectively improving the radiation performance in the preset frequency band.

[0061] In some embodiments, the electrical length of the first radiation branch 11 and the second radiation branch 12 may be the electrical length of the first radiation branch 11 and the second radiation branch 12 themselves, or may be the final equivalent electrical length of the first radiation branch 11 and the second radiation branch 12 under the matching conditions of the matching element.

[0062] In some embodiments, the first radiation branch 11 and the second radiation branch 12 are in a bar shape, such as a straight bar shape, a bent bar shape, etc., and the electrical lengths of the first radiation branch 11 and the second radiation branch 12 themselves are substantially equal to the lengths of the first radiation branch 11 and the second radiation branch 12. When the electrical lengths of the first radiation branch 11 and the second radiation branch 12 are the electrical lengths of the first radiation branch 11 and the second radiation branch 12 themselves, the electrical lengths of the first radiation branch 11 and the second radiation branch 12 are substantially equal to the lengths of the first radiation branch 11 and the second radiation branch 12, respectively.

[0063] Among them, when the electrical length of the first radiation branch 11 and the second radiation branch 12 is the final equivalent electrical length of the first radiation branch 11 and the second radiation branch 12 under the matching condition of the matching element, since the matching element will be equivalent to a certain electrical length, the electrical length of the first radiation branch 11, that is, the final equivalent electrical length, is the sum of the electrical length of the first radiation branch 11 itself and the electrical length equivalent to the corresponding matching element, and the electrical length of the second radiation branch 12, that is, the final equivalent electrical length, is the sum of the electrical length of the first radiation branch 11 itself and the electrical length equivalent to the corresponding matching element.

[0064] The lengths of the first radiating branch node 11 and the second radiating branch node 12 are the dimensions in the extension direction of the longest sides of the first radiating branch node 11 and the second radiating branch node 12. For example, when the first radiating branch node 11 and the second radiating branch node 12 are straight bars, the extension direction of the longest sides of the first radiating branch node 11 and the second radiating branch node 12 is the extension direction of the longest straight side, and when the first radiating branch node 11 and the second radiating branch node 12 are bent bars, the extension direction of the longest sides of the first radiating branch node 11 and the second radiating branch node 12 is the extension direction of the longest bent side.

[0065] Among them, in the present application, λ is the wavelength corresponding to the preset frequency band, specifically refers to the wavelength corresponding to the center frequency of the preset frequency band, and the first radiation branch 11 and the second radiation branch 12 resonate in the preset frequency band, which may be the center frequency of the preset frequency band.

[0066] In some embodiments, the frequencies of the first feed signal and the second feed signal are the same and are both equal to the center frequency of the preset frequency band, so that the first radiation branch 11 and the second radiation branch 12 resonate at the center frequency of the preset frequency band under the excitation of the first feed signal and the second feed signal respectively, thereby achieving dual resonance, and the whole works in a radiation mode to support the transmission and reception of electromagnetic wave signals in the preset frequency band.

[0067] In some embodiments, Figure 1 As shown, the first radiation branch 11 and the second radiation branch 12 are adjacent to and spaced apart from each other, the first radiation branch 11 includes a first end D1 and a second end D2 opposite to each other, the second radiation branch 12 includes a third end D3 and a fourth end D4 opposite to each other, the first end D1 of the first radiation branch 11 and the third end D3 of the second radiation branch 12 are open ends and are adjacent to and spaced apart from each other, the first feeding point F1 is arranged at a position of the first radiation branch 11 close to the first end D1, the second feeding point F2 is arranged at a position of the second radiation branch 12 close to the third end D3, the first feeding signal and the second feeding signal have opposite phases to excite the first radiation branch 11 and the second radiation branch 12 to generate currents in the same direction, and the whole works in the radiation mode.

[0068] That is, in some embodiments, the first radiation branch 11 and the second radiation branch 12 are two adjacent radiation branches that are spaced apart, the first feeding point F1 and the second feeding point F2 are also close to each other, and the first feeding signal and the second feeding signal output by the signal processing unit 14 have opposite phases. After being output to the first feeding point F1 and the second feeding point F2 respectively, the directions of the currents generated after the first radiation branch 11 and the second radiation branch 12 are excited are the same, thereby satisfying the conditions for working in the radiation mode.

[0069] Among them, for two radiation branches arranged at intervals, when the directions of the currents generated by the two radiation branches after being excited are the same, the radiation mode can be effectively excited, that is, the conditions for working in the radiation mode are met at this time.

[0070] Among them, in the present application, A and B are adjacent and spaced apart, which means that the distance between A and B is less than a preset distance, such as 1 cm, and they are spaced apart from each other.

[0071] In some embodiments, the first feeding point F1 is arranged at a position of the first radiation branch 11 close to the first end D1, which may include the first feeding point F1 being arranged at the first end D1 or the distance between the first feeding point F1 and the first end D1 being less than a certain distance, such as 2 cm, etc. The second feeding point F2 is arranged at a position of the second radiation branch 12 close to the third end D3, which may include the second feeding point F2 being arranged at the third end D3 of the second radiation branch 12 or the distance between the second feeding point F2 and the third end D3 being less than a certain distance, such as 2 cm, etc.

[0072] See also Figure 2, which is a schematic diagram of the current generated by the antenna assembly 1 in some embodiments of the present application. In some embodiments, since the first end D1 of the first radiation branch node 11 and the third end D3 of the second radiation branch node 12 are adjacent and spaced apart, the second end D2 of the first radiation branch node 11 and the fourth end D4 of the second radiation branch node 12 are relatively far apart, the direction from the first end D1 of the first radiation branch node 11 to the second end D2 is substantially the same as the direction from the fourth end D4 of the second radiation branch node 12 to the third end D3. Since the phases of the first feed signal and the second feed signal output by the signal processing unit 14 are opposite, when the phase of the first feed signal output to the first feed point F1 close to the first end D1 is positive and the phase of the second feed signal output to the second feed point F2 close to the third end D3 is negative, at this time, the first feed signal with a positive phase excites the first radiation branch 11 to generate a current i11 from the first end D1 to the second end D2, and the second feed signal with a negative phase excites the second radiation branch 12 to generate a current i12 from the fourth end D4 to the third end D3. Since the direction from the first end D1 to the second end D2 of the first radiation branch 11 is substantially the same as the direction from the fourth end D4 to the third end D3 of the second radiation branch 12, the directions of the current i11 and the current i12 are also substantially the same.

[0073] Obviously, when the phase of the first feed signal output to the first feed point F1 close to the first end D1 is negative, and the phase of the second feed signal output to the second feed point F2 close to the third end D3 is positive, at this time, the first feed signal with a negative phase excites the first radiation branch 11 to generate a current i11 from the second end D2 to the first end D1, and the second feed signal with a positive phase excites the second radiation branch 12 to generate a current i12 from the third end D3 to the fourth end D4. Since the direction from the first end D1 of the first radiation branch 11 to the second end D2 is approximately the same as the direction from the fourth end D4 of the second radiation branch 12 to the third end D3, the directions of the current i11 and the current i12 are still approximately the same.

[0074] Figure 2 In the figure, it is illustrated by taking the example that the current i11 generated by the first radiation branch 11 is roughly from the second end D2 to the first end D1, and the current generated by the second radiation branch 12 is roughly from the third end D3 to the fourth end D4.

[0075] In some embodiments, the second end D2 of the first radiation branch 11 and the fourth end D4 of the second radiation branch 12 are grounded or open. That is, the second end D2 of the first radiation branch 11 and the fourth end D4 of the second radiation branch 12 can be grounded or open.

[0076] In some embodiments, Figure 1 and Figure 2 As shown, the second end D2 of the first radiation branch 11 and the fourth end D4 of the second radiation branch 12 are both grounded. Therefore, the first radiation branch 11 and the second radiation branch 12 both form an IFA (inverted Fantenna) antenna, thus forming an IFA radiation pattern.

[0077] Obviously, in some embodiments, the second end D2 of the first radiating branch 11 and the fourth end D4 of the second radiating branch 12 may also be open ends, and the first radiating branch 11 and the second radiating branch 12 may both be monopole antennas. The present application does not limit the antenna structure formed by the second end D2 of the first radiating branch 11 and the second radiating branch 12, and it may be any desired structure.

[0078] In some embodiments, Figure 1 and Figure 2 As shown, the first radiation branch node 11 and the second radiation branch node 12 are bent, that is, bent strips, and the first radiation branch node 11 and the second radiation branch node 12 form a semi-annular structure, and the direction of the current generated by the first radiation branch node 11 and the second radiation branch node 12 is counterclockwise or clockwise around the semi-annular structure.

[0079] That is, in some embodiments, the first radiation branch node 11 and the second radiation branch node 12 are bent, that is, bent strips, and the first radiation branch node 11 and the second radiation branch node 12 form a semi-annular structure. Therefore, at this time, the direction from the first end D1 of the first radiation branch node 11 to the second end D2 is a counterclockwise or clockwise direction from the fourth end D4 of the second radiation branch node 12 to the third end D3. For example, Figure 1 and Figure 2As shown, the direction from the first end D1 of the first radiation branch 11 to the second end D2 and the direction from the fourth end D4 of the second radiation branch 12 to the third end D3 are counterclockwise from the perspective shown in the figure. As mentioned above, the current i11 generated by the first radiation branch 11 may be from the first end D1 to the second end D2, and the current generated by the second radiation branch 12 may be approximately from the fourth end D4 to the third end D3, or the current i11 generated by the first radiation branch 11 may be from the second end D2 to the first end D1, and the current generated by the second radiation branch 12 may be approximately from the third end D3 to the fourth end D4. Thus, the direction of the current generated by the first radiation branch 11 and the second radiation branch 12 may be counterclockwise or clockwise around the semi-annular structure, but at any time, the direction of the current generated by the first radiation branch 11 and the second radiation branch 12 remains the same, thereby still ensuring that the generation conditions of the radiation mode are met.

[0080] See also Figure 3 , is a schematic diagram of a simple structure and current distribution of a first reference antenna component 1'. Figure 3 As shown, the first reference antenna assembly 1' comprises radiation branches 11', 12' and a feed source 13', wherein the radiation branches 11', 12' are arranged adjacently and at intervals, wherein the feed source 13' is connected to the feed source F1' on the radiation branch 11', and the radiation branch 12' serves as a parasitic branch of the radiation branch 11'. The radiation branches 11', 12' are both bent, and the whole forms a semi-annular structure. The structure of the radiation branches 11', 12' is similar to Figure 1-Figure 2 The structures of the first radiation branch 11 and the second radiation branch 12 may be the same.

[0081] Among them, Figure 3As shown, the radiation branch 11', under the stimulation of the feed source 13', will stimulate the radiation branches 11' and 12' to generate the same-direction current i11', and will also stimulate the radiation branches 11' and 12' to generate the opposite-direction current i12'. That is, the radiation branch 11' generates a current i11' that is approximately counterclockwise or clockwise, while the radiation branch 12' generates a current i11' that is also approximately counterclockwise or clockwise; at the same time, the radiation branch 11' also generates a current i12' that is approximately counterclockwise or clockwise, while the radiation branch 12' generates a current i12' that is approximately clockwise or counterclockwise, which is opposite to the current i12' generated by the radiation branch 11'. The unidirectional current i11' in the radiation branches 11' and 12' will make the first reference antenna component 1' work in the radiation mode, while the reverse current i12' in the radiation branches 11' and 12' will make the first reference antenna component 1' work in the balanced mode.

[0082] At this time, since the radiation pattern is generated only by the radiation branch 11' under the excitation of the feed source 13', the radiation energy is mostly concentrated in the radiation branch 11', which easily causes the SAR value to exceed the standard. Since a balance mode will also be generated, it will also have an effect on improving the SAR value, further aggravating the problem of SAR value exceeding the standard.

[0083] Therefore, in the present application, the current directions of the first radiating branch 11 and the second radiating branch 12 under the excitation of the first feed signal and the second feed signal are the same, and the whole works in the radiation mode. By feeding the two radiating branches at the same time, the radiation energy can be dispersed in the two radiating branches, thereby reducing the SAR value. And because the current directions of the first radiating branch 11 and the second radiating branch 12 under the excitation of the first feed signal and the second feed signal are the same, the required conditions of the balanced mode can be effectively destroyed, and they will not work in the balanced mode, that is, they only work in the radiation mode, thereby further effectively avoiding the SAR value from exceeding the standard. Therefore, compared with the first reference antenna component 1', the antenna component 1 of the present application can effectively reduce the SAR value while ensuring the antenna performance.

[0084] Among them, Figure 1 and Figure 2As shown, the first radiation branch 11 and the second radiation branch 12 are bent, and the first radiation branch 11 includes a first radiation sub-branch 111 and a second radiation sub-branch 112, and the second radiation branch 12 includes a third radiation sub-branch 121 and a fourth radiation sub-branch 122. The first radiation sub-branch 111 and the second radiation sub-branch 112 are vertically connected, and the third radiation sub-branch 121 and the fourth radiation sub-branch 122 are vertically connected. The end of the first radiation sub-branch 111 away from the second radiation sub-branch 112 is the first End D1, the end of the second radiation sub-branch 112 away from the first radiation sub-branch 111 is the second end D2, the end of the third radiation sub-branch 121 away from the fourth radiation sub-branch 122 is the third end D3, the end of the fourth radiation sub-branch 122 away from the third radiation sub-branch 121 is the fourth end D4, the first radiation sub-branch 111 is parallel to the third radiation sub-branch 121 and is arranged at intervals, the second radiation sub-branch 112 is parallel to the fourth radiation sub-branch 122, and forms a semi-annular structure.

[0085] The second radiation sub-branch 112 is parallel to the fourth radiation sub-branch 122 and is located on the same side of the first radiation sub-branch 111 and the third radiation sub-branch 121. The first radiation sub-branch 111 is parallel to the third radiation sub-branch 121 and is arranged at intervals, specifically, the first radiation sub-branch 111 is parallel to the third radiation sub-branch 121 and is arranged at intervals along the length direction of the first radiation sub-branch 111 and the third radiation sub-branch 121. Thus, Figure 1 and Figure 2 As shown, the first radiating branches 11 and the second radiating branches 12 form a semi-annular structure in the shape of “[” as a whole.

[0086] The length direction of the first radiation sub-branch 111 and the third radiation sub-branch 121 is the extension direction of the longest sides of the first radiation sub-branch 111 and the third radiation sub-branch 121 .

[0087] In some embodiments, the preset frequency band is a low frequency band, for example, it can be one of the B8 band (880MHz-960MHz), the B20 band (791MHz-862MHz), the B28 band (700MHz-800MHz), and the B5 band (824MHz-896MHz). Among them, the B8 band, the B20 band, the B28 band, and the B5 band are the names in the 4G communication network, and are also called the N8 band, the N20 band, the N28 band, and the N5 band in the 5G communication network.

[0088] Among them, since the wavelength of the low-frequency band is longer, the electrical length required for resonance in the low-frequency band is longer. Therefore, by setting the first radiation branch 11 and the second radiation branch 12 to be bent, the overall size can be effectively reduced while meeting the electrical length requirements of the low-frequency band.

[0089] Obviously, in some embodiments, the preset frequency band may also be other frequency bands, for example, a medium frequency band, a medium-high frequency band, a high frequency band, and the like.

[0090] Obviously, the first radiation branch 11 and the second radiation branch 12 are not limited to the bent shape, and can be designed into any shape as needed.

[0091] See also Figure 4 , is a simple structural diagram of a variation of the antenna assembly 1 in some embodiments of the present application. Figure 4 As shown, the first radiating branch nodes 11 and the second radiating branch nodes 12 can both be straight bars and are adjacent and spaced apart, wherein the first radiating branch nodes 11 and the second radiating branch nodes 12 are spaced apart along the length direction of the first radiating branch nodes 11 and the second radiating branch nodes 12 to form a straight line structure.

[0092] like Figure 4 As shown, the first radiation branch 11 includes a first end D1 and a second end D2 opposite to each other, the second radiation branch 12 includes a third end D3 and a fourth end D4 opposite to each other, the first end D1 of the first radiation branch 11 and the third end D3 of the second radiation branch 12 are open ends and are adjacent and spaced apart, the second end D2 of the first radiation branch 11 and the fourth end D4 of the second radiation branch 12 are grounded or are open ends, Figure 4 In the figure, the second end D2 of the first radiation branch 11 and the fourth end D4 of the second radiation branch 12 are grounded as an example. The first end D1 of the first radiation branch 11 and the third end D3 of the second radiation branch 12 are adjacent and spaced apart, and the second end D2 of the first radiation branch 11 and the fourth end D4 of the second radiation branch 12 are relatively far away. Therefore, the direction from the first end D1 of the first radiation branch 11 to the second end D2 is the same as the direction from the fourth end D4 of the second radiation branch 12 to the third end D3, and both are parallel to the length direction of the first radiation branch 11 and the second radiation branch 12.

[0093] The first feeding point F1 is set at a position of the first radiating branch 11 close to the first end D1, the second feeding point F2 is set at a position of the second radiating branch 12 close to the third end D3, and the first feeding signal and the second feeding signal are in opposite phases, thereby stimulating the first radiating branch 11 and the second radiating branch 12 to generate currents in the same direction, and the whole works in the radiation mode. Since the first radiating branch 11 and the second radiating branch 12 are both straight strips, the currents generated by the first radiating branch 11 and the second radiating branch 12 are parallel to the length direction of the first radiating branch 11 and the second radiating branch 12, and point in the same direction. For example, the direction of the current i11 generated by the first radiation branch 11 is from the first end D1 to the second end D2, and the direction of the current i12 generated by the second radiation branch 12 is from the fourth end D4 to the third end D3, or the direction of the current i11 generated by the first radiation branch 11 is from the second end D2 to the first end D1, and the direction of the current i12 generated by the second radiation branch 12 is from the third end D3 to the fourth end D4. Thus, the directions of the currents in the first radiation branch 11 and the second radiation branch 12 remain the same at all times, and the conditions for generating the radiation mode are still met, and the conditions required for the balanced mode can be effectively destroyed without working in the balanced mode, that is, only working in the radiation mode, thereby effectively avoiding the SAR value from exceeding the standard.

[0094] in, Figure 4 With the aforementioned Figure 1 and Figure 2 The difference is that the first radiation branch 11 and the second radiation branch 12 are both straight strips. For other information, please refer to the above Figure 1 and Figure 2 Related content.

[0095] See also Figure 5 , is another simple structure and current distribution diagram of the antenna assembly 1 in some embodiments of the present application. In some embodiments, Figure 5 As shown, the first radiating branch 11 and the second radiating branch 12 are adjacent and spaced apart, the first radiating branch 11 is bent, the second radiating branch 12 is straight, the first radiating branch 11 and the second radiating branch 12 form a bent structure as a whole, and the direction of the current generated by the first radiating branch 11 and the second radiating branch 12 is counterclockwise or clockwise around the bent structure.

[0096] Among them, Figure 5As shown, the first radiation branch 11 includes a first end D1 and a second end D2 opposite to each other, the second radiation branch 12 includes a third end D3 and a fourth end D4 opposite to each other, the first end D1 of the first radiation branch 11 and the third end D3 of the second radiation branch 12 are open ends and are adjacent and spaced apart, the second end D2 of the first radiation branch 11 and the fourth end D4 of the second radiation branch 12 are grounded or are open ends, Figure 5 In the figure, the grounding of the second end D2 of the first radiation branch 11 and the fourth end D4 of the second radiation branch 12 is used as an example for illustration. The first radiation branch 11 includes a first feeding point F1, and the second radiation branch 12 includes a second feeding point F2. The first feeding point F1 is arranged at a position close to the first end D1 of the first radiation branch 11, and the second feeding point F2 is arranged at a position close to the third end D3 of the second radiation branch 12. The first feeding signal and the second feeding signal are in opposite phases, thereby stimulating the first radiation branch 11 and the second radiation branch 12 to generate currents in the same direction, and the whole works in the radiation mode. Since the first radiation branch 11 is bent and the second radiation branch 12 is straight, the first radiation branch 11 and the second radiation branch 12 form a bent structure as a whole. The directions of the currents generated by the first radiation branch 11 and the second radiation branch 12 are both counterclockwise around the bent structure or both are clockwise.

[0097] like Figure 5 As shown, the first radiation branch 11 includes a first radiation sub-branch 111 and a second radiation sub-branch 112, the first radiation sub-branch 111 and the second radiation sub-branch 112 are vertically connected, the end of the first radiation sub-branch 111 away from the second radiation sub-branch 112 is the first end D1, the end of the second radiation sub-branch 112 away from the first radiation sub-branch 111 is the second end D2, the first radiation sub-branch 111 is parallel to the second radiation branch, and is adjacent to and spaced from the second radiation branch.

[0098] The first radiation sub-branch 111, the second radiation sub-branch 112 and the second radiation branch are all in the shape of straight strips. The first radiation sub-branch 111 is parallel to the second radiation branch, which means that the first radiation sub-branch 111 is parallel to the second radiation branch and is arranged at intervals along the length direction of the first radiation sub-branch 111 and the second radiation branch. The length direction of the first radiation sub-branch 111 and the second radiation branch is the extension direction of the longest side of the first radiation sub-branch 111 and the second radiation branch.

[0099] Among them, since the phases of the first feed signal and the second feed signal output by the signal processing unit 14 are opposite, when the phase of the first feed signal output to the first feed point F1 close to the first end D1 is positive, and the phase of the second feed signal output to the second feed point F2 close to the third end D3 is negative, at this time, the first feed signal with a positive phase excites the first radiation branch 11 to generate a current i11 from the first end D1 to the second end D2, and the second feed signal with a negative phase excites the second radiation branch 12 to generate a current i12 from the fourth end D4 to the third end D3, as shown in FIG. Figure 5 In the perspective shown, the direction from the first end D1 of the first radiation branch 11 to the second end D2 and the direction from the fourth end D4 of the second radiation branch 12 to the third end D3 are approximately in the clockwise direction around the meandering structure, so at this time, the directions of the currents generated by the first radiation branch 11 and the second radiation branch 12 are approximately in the clockwise direction around the meandering structure. When the phase of the first feed signal output to the first feed point F1 close to the first end D1 is negative, and the phase of the second feed signal output to the second feed point F2 close to the third end D3 is positive, the directions of the currents generated by the first radiation branch 11 and the second radiation branch 12 are approximately in the counterclockwise direction around the meandering structure. Thus, at any time, the directions of the currents generated by the first radiation branch 11 and the second radiation branch 12 are approximately the same, and the conditions for working in the radiation mode are met, and the conditions for the balanced mode are destroyed, thereby effectively reducing the SAR value while ensuring the antenna radiation performance.

[0100] in, Figure 5 The antenna assembly 1 shown is similar in structure to the previous Figure 1-Figure 2 Compared with the antenna assembly 1 shown in the figure, the difference is that the first radiation branch 11 is bent, and the second radiation branch 12 is straight. Figure 1-Figure 2 The structure of the antenna assembly 1 shown in the figure is the same as that in the figure, and the details can also be seen in Figure 1-Figure 2 Related contents of the structure of the antenna assembly 1 shown in the figure etc.

[0101] See also Figure 6 , is a schematic diagram of a simple structure and current distribution of a second reference antenna component 2'. Figure 6As shown, the second reference antenna assembly 2' includes radiation branches 11', 12' and a feed source 13'. The radiation branches 11', 12' are adjacent and spaced apart. The feed source 13' is only connected to the radiation branch 11', that is, connected to the feeding point F1 of the radiation branch 11'. The radiation branch 12' serves as a parasitic branch of the radiation branch 11'. The radiation branch 11' is bent, and the radiation branch 12' is straight, and the whole structure forms a bent structure. The structures of the radiation branches 11', 12' are similar to those of the Figure 5 The structures of the first radiation branch 11 and the second radiation branch 12 may be the same.

[0102] Among them, Figure 6 As shown, since the feed source 13' is only connected to the radiation branch 11', the radiation branch 11' will simultaneously stimulate the radiation branches 11' and 12' to generate a current i11' in the same direction and will also stimulate the radiation branches 11' and 12' to generate a current i12' in the opposite direction under the stimulation of the feed source 13'. Figure 6 As shown, the radiation branch 11', under the stimulation of the feed source 13', will stimulate the radiation branches 11' and 12' to generate the same-direction current i11', and will also stimulate the radiation branches 11' and 12' to generate the opposite-direction current i12'. That is, the radiation branch 11' generates the counterclockwise or clockwise current i11' which is roughly around the bent structure, while the radiation branch 12' generates the counterclockwise or clockwise current i11'; at the same time, the radiation branch 11' also generates the counterclockwise or clockwise current i12', while the radiation branch 12' generates the clockwise or counterclockwise current i12' which is opposite to the current i12' generated by the radiation branch 11'. The same-direction current i11' in the radiation branches 11' and 12' will make the second reference antenna component 2' work in the radiation mode, while the opposite-direction current i12' in the radiation branches 11' and 12' will make the second reference antenna component 2' work in the balanced mode.

[0103] At this time, since the radiation pattern is generated only by the radiation branch 11' under the excitation of the feed source 13', the radiation energy is mostly concentrated in the radiation branch 11', which easily causes the SAR value to exceed the standard. Since a balance mode will also be generated, it will also have an effect on improving the SAR value, further aggravating the problem of SAR value exceeding the standard.

[0104] Therefore, in this application, Figure 5As shown, since the current directions of the first radiation branch 11 and the second radiation branch 12 under the excitation of the first feed signal and the second feed signal are respectively the same, and the whole works in the radiation mode, by feeding the two radiation branches at the same time, the radiation energy can be dispersed in the two radiation branches, thereby reducing the SAR value. And since the current directions of the first radiation branch 11 and the second radiation branch 12 under the excitation of the first feed signal and the second feed signal are respectively the same, the required conditions of the balanced mode can be effectively destroyed, and they will not work in the balanced mode, that is, they only work in the radiation mode, thereby further effectively avoiding the SAR value from exceeding the standard. Therefore, this application Figure 5 The antenna assembly 1 shown is compared to the Figure 6 The second reference antenna assembly 2 ′ shown can effectively reduce the SAR value while ensuring the antenna performance.

[0105] In some embodiments, Figure 5 The antenna assembly 1 and Figure 6 The preset frequency band supported by the second reference antenna assembly 2' shown may be a medium-high frequency band. That is, in some embodiments, the preset frequency band may be a medium-high frequency band, for example, the B3 band (1.71-1.88 GHz), the B1 band (1.92-2.17 GHz), the B40 band ((2.3-2.4 GHz)), the B41 band (2.496-2.69 GHz), and the like.

[0106] Among them, by setting the first radiation branch 11 to be bent and setting the second radiation branch 12 to be straight, the overall size can be effectively reduced while meeting the electrical length requirements of the low frequency band.

[0107] Obviously, in other embodiments, Figure 5 The antenna assembly 1 and Figure 6 The frequency band supported by the second reference antenna assembly 2 ′ shown may also be other frequency bands, such as a low frequency band, a medium frequency band, a high frequency band, and the like.

[0108] See also Figure 7 , is a schematic diagram of the internal structure of the signal processing unit 14 in some embodiments of the present application. Figure 7 As shown, in some embodiments, Figure 1-Figure 2 as well as Figure 5The signal processing unit 14 in the antenna assembly 1 shown in the figure includes a power divider 141 and a phase shifter 142, the power divider 141 includes a first input end 141a, a first output end 141b and a second output end 141c, the first input end 141a is connected to the feed source 13, the first output end 141b is connected to the first feeding point F1 of the first radiation branch 11 and the second feeding point F2 of the second radiation branch 12, and the phase shifter 142 is connected to the other of the first feeding point F1 and the second feeding point F2. The power divider 141 is used for dividing the feed signal output by the feed source 13 into two feed signals with the same frequency and phase, and outputting them through the first output terminal 141b and the second output terminal 141c respectively. The phase shifter 142 is used for phase shifting the feed signal output by the second output terminal 141c to obtain an inverted feed signal, so that the first feeding point F1 and the second feeding point F2 respectively receive the first feeding signal and the second feeding signal with the same frequency and opposite phase.

[0109] That is, in some embodiments, the power divider 141 is used to divide the feed signal output by the feed source 13 into two feed signals with the same frequency and phase, and output them through the first output terminal 141b and the second output terminal 141c respectively. Since the first output terminal 141b is connected to one of the first feeding point F1 of the first radiation branch 11 and the second feeding point F2 of the second radiation branch 12, the feed signal output by the first output terminal 141b is directly provided to one of the first feeding point F1 of the first radiation branch 11 and the second feeding point F2 of the second radiation branch 12. The phase shifter 142 is used to phase shift the feed signal output by the second output terminal 141c to obtain a feed signal with the same frequency and opposite phase as the feed signal output by the first output terminal 141b, and output it to the other of the first feeding point F1 of the first radiation branch 11 and the second feeding point F2 of the second radiation branch 12. Therefore, the first feeding point F1 and the second feeding point F2 respectively receive two feeding signals with the same frequency and opposite phases, namely, the aforementioned first feeding signal and the second feeding signal.

[0110] in, Figure 7 In the embodiment, the first output end 141b of the power divider 141 is connected to the first feeding point F1 of the first radiation branch 11, and the phase shifter 142 is connected between the second feeding point F2 and the second output end 141c.

[0111] Among them, in the present application, the phase shifter 142 shifts the phase of the feed signal output from the second output end to obtain an inverted feed signal, which can be a feed signal that is approximately inverted, but not a strictly inverted feed signal. The phases of the first feed signal and the second feed signal are opposite, which also means that the phases of the first feed signal and the second feed signal are approximately opposite, but not strictly opposite. In some embodiments, the phase shifter 142 can perform a preset phase phase shift on the feed signal output from the second output end to obtain an approximately inverted feed signal. Among them, the preset phase can be a phase between 150° and 180°, that is, it can be any phase greater than or equal to 150° and less than or equal to 180°. In some embodiments, the preset phase can also be 180°, which can better realize two feed signals with basically opposite phases, and can better ensure working in the radiation mode.

[0112] In some embodiments, the power divider 141 may be an integrated power divider integrated in the feed source 13, and the phase shifter 142 may be a microstrip line, for example, a microstrip line with an electrical length of 1 / 2 wavelength, so that after the feed signal output from the second output end 141c passes through the microstrip line, a phase change of 180° will be generated, which is opposite to the phase of the feed signal output from the first output end 141b. Obviously, when the preset phase can be a phase between 150° and 180°, since 180° is half a wavelength, the microstrip line can also be a microstrip line with an electrical length corresponding to a phase of 150° to 180°.

[0113] Obviously, in some embodiments, the power divider 141 and the phase shifter 142 may also be any other known power divider and phase shifter.

[0114] See also Figure 8 , is another simple structure and current distribution diagram of the antenna assembly 1 in some embodiments of the present application. In some embodiments, Figure 8 As shown, the antenna assembly 1 also includes a first radiating branch 11, a second radiating branch 12, a feed source 13 and a signal processing unit 14. The first radiating branch 11 includes a first feeding point F1, and the second radiating branch 12 includes a second feeding point F2. Figure 8 As shown, in some embodiments, the first radiation branch 11 and the second radiation branch 12 are connected, and the connection point N1 between the first radiation branch 11 and the second radiation branch 12 is grounded, and the first feed signal and the second feed signal have the same phase to stimulate the first radiation branch 11 and the second radiation branch 12 to generate currents in opposite directions, and the whole works in the radiation mode.

[0115] That is, in some embodiments, the signal processing unit 14 converts the feed signal provided by the feed source into a first feed signal and a second feed signal with the same frequency and phase. The first radiation branch 11 and the second radiation branch 12 are two radiation branches divided by a grounded connection point N1 as an integral radiation branch, and the first radiation branch 11 and the second radiation branch 12 roughly form a T-antenna structure. When the first feed signal and the second feed signal with the same frequency and phase are respectively fed into the first radiation branch 11 and the second radiation branch 12, the currents generated on the first radiation branch 11 and the second radiation branch 12 are symmetrical, so that, overall, the directions of the currents generated on the first radiation branch 11 and the second radiation branch 12 are opposite.

[0116] Generally speaking, for a T-antenna structure, when the currents of the first radiating branch 11 and the second radiating branch 12 are opposite, the condition for working in the radiation mode is met, and when the currents of the first radiating branch 11 and the second radiating branch 12 are the same, the condition for working in the balanced mode is met.

[0117] Therefore, in some embodiments of the present application, for Figure 8 In the T-antenna structure shown, the signal processing unit 14 converts the feed signal provided by the feed source into a first feed signal and a second feed signal with the same frequency and phase, and provides them to the first radiation branch 11 and the second radiation branch 12 respectively, so as to stimulate the first radiation branch 11 and the second radiation branch 12 to generate currents in opposite directions. Thus, in the present application, the current directions of the first radiation branch 11 and the second radiation branch 12 under the stimulation of the first feed signal and the second feed signal are opposite, and the whole works in the radiation mode, and by feeding the two radiation branches at the same time, the radiation energy can be dispersed in the two radiation branches, thereby reducing the SAR value. In addition, since the current directions of the first radiation branch 11 and the second radiation branch 12 under the stimulation of the first feed signal and the second feed signal are opposite, the required conditions of the balanced mode under the T-antenna structure can be effectively destroyed, and they will not work in the balanced mode, that is, they only work in the radiation mode, so that the SAR value can be further effectively avoided from exceeding the standard.

[0118] In some embodiments, for Figure 8 In the T-antenna structure shown, similarly, the electrical lengths of the first radiation branch 11 and the second radiation branch 12 are both λ / 4, where λ is the wavelength corresponding to the preset frequency band. Thus, both the first radiation branch 11 and the second radiation branch 12 can resonate in the preset frequency band, thereby achieving dual resonance and effectively improving the radiation performance in the preset frequency band.

[0119] Among them, Figure 8 As shown, the first radiation branch 11 includes a first end D1 and a second end D2 opposite to each other, the second radiation branch 12 includes a third end D3 and a fourth end D4 opposite to each other, the first end D1 of the first radiation branch 11 and the third end D3 of the second radiation branch 12 are connected and grounded, and the second end D2 of the first radiation branch 11 and the fourth end D4 of the second radiation branch 12 are open ends. Thus, as mentioned above, the first radiation branch 11 and the second radiation branch 12 roughly form a T-antenna structure. Among them, the first end D1 of the first radiation branch 11 and the third end D3 of the second radiation branch 12 can be virtual terminals formed by grounding the connection point N1. In fact, the first radiation branch 11 and the second radiation branch 12 are connected to form a whole radiation branch.

[0120] Among them, since the first end D1 of the first radiating branch 11 and the third end D3 of the second radiating branch 12 are connected, the second end D2 of the first radiating branch 11 and the fourth end D4 of the second radiating branch 12 are relatively far away. Therefore, the direction from the first end D1 of the first radiating branch 11 to the second end D2 is approximately the same as the direction from the fourth end D4 of the second radiating branch 12 to the third end D3.

[0121] In some embodiments, the first feed point F1 and the second feed point F2 may be symmetrically arranged relative to the connection point N1. For example, the first feed point F1 and the second feed point F2 may be arranged close to the connection point N1, or the first feed point F1 and the second feed point F2 may be arranged far away from the connection point N1, for example, the first feed point F1 is arranged at a position close to the second end D2 of the first radiation branch 11, and the second feed point F2 is arranged at a position close to the fourth end D4 of the second radiation branch 12, or the first feed point F1 and the second feed point F2 are arranged at the middle position of the first radiation branch 11 and the second radiation branch 12, respectively. In some embodiments, the first feed point F1 and the second feed point F2 may be symmetrically arranged relative to the connection point N1, and the distances between the first feed point F1 and the second feed point F2 and the connection point N1 may be equal.

[0122] Among them, since the phases of the first feed signal and the second feed signal output by the signal processing unit 14 are the same, when the first feed signal excites the first radiation branch 11 to generate a current i11 from the first end D1 to the second end D2, the second feed signal will excite the second radiation branch 12 to generate a current i12 from the third end D3 to the fourth end D4, and when the first feed signal excites the first radiation branch 11 to generate a current i11 from the second end D2 to the first end D1, the second feed signal will excite the second radiation branch 12 to generate a current i12 from the fourth end D4 to the third end D3. Since the direction from the first end D1 to the second end D2 of the first radiation branch 11 is substantially the same as the direction from the fourth end D4 to the third end D3 of the second radiation branch 12, the directions of the current i11 and the current i12 are always substantially opposite.

[0123] For example, Figure 8 As shown, the first feeding point F1 and the second feeding point F2 can be both arranged far away from the connection point N1, that is, the first feeding point F1 is arranged at a position close to the second end D2 of the first radiation branch 11, and the second feeding point F2 is arranged at a position close to the fourth end D4 of the second radiation branch 12. When the phases of the first feeding signal and the second feeding signal are the same and both are positive, the first feeding signal will excite the first radiation branch 11 to generate a current i11 from the second end D2 to the first end D1, and the second feeding signal will excite the second radiation branch 12 to generate a current i12 from the fourth end D4 to the third end D3, so that the directions of the current i11 and the current i12 are substantially opposite.

[0124] In some embodiments, the first radiating branch 11 and the second radiating branch 12 are straight and parallel, and the first radiating branch 11 and the second radiating branch 12 are connected to form a radiating branch that is straight as a whole.

[0125] That is, in some embodiments, the first radiation branch 11 and the second radiation branch 12 are straight and parallel, and the first end D1 of the first radiation branch 11 and the third end D3 of the second radiation branch 12 are connected to form a straight radiation branch as a whole.

[0126] Among them, Figure 8As shown, since the first radiation branch 11 and the second radiation branch 12 are both straight strips and parallel, the currents generated by the first radiation branch 11 and the second radiation branch 12 are parallel to the length direction of the first radiation branch 11 and the second radiation branch 12, and point in opposite directions. For example, the direction of the current i11 generated by the first radiation branch 11 is from the first end D1 to the second end D2, and the direction of the current i12 generated by the second radiation branch 12 is from the third end D3 to the fourth end D4, or the direction of the current i11 generated by the first radiation branch 11 is from the second end D2 to the first end D1, and the direction of the current i12 generated by the second radiation branch 12 is from the fourth end D4 to the third end D3. Therefore, the directions of the currents in the first radiation branch 11 and the second radiation branch 12 remain opposite at any time, which still ensures that the conditions for generating the radiation mode are met, and the conditions required for the balanced mode can be effectively destroyed, and the balanced mode will not be operated, that is, it only works in the radiation mode, so that the SAR value can be effectively avoided from exceeding the standard.

[0127] In some embodiments, due to Figure 8 The second end D2 of the first radiation branch 11 and the fourth end D4 of the second radiation branch 12 of the antenna component 1 shown are open ends, and the antenna component 1 also includes at least one parasitic branch, which is adjacent to and spaced from the second end D2 of the first radiation branch 11 and / or the fourth end D4 of the second radiation branch 12. By adding the parasitic branches, the bandwidth can be effectively widened. The parasitic branches will be introduced together in other embodiments later, and the details can be referred to the description later.

[0128] See also Fig. 9 , is a schematic diagram of a simple structure and current distribution of a third reference antenna component 3'. Fig. 9 As shown, the third reference antenna assembly 3' comprises radiating branches 11', 12' and a feed source 13', the radiating branches 11', 12' are connected, the connection point N1' of the radiating branches 11', 12' is grounded, and the ends of the radiating branches 11' and 12' that are away from each other are open circuit ends. Fig. 9 As shown, the feed source 13' is only connected to the radiation branch 11'. The radiation branch 11' and the radiation branch 12' are both straight strips, and the whole structure forms a straight line. The structures of the radiation branches 11' and 12' are similar to Figure 8 The structures of the first radiation branch 11 and the second radiation branch 12 in the embodiment may be the same. That is, the third reference antenna component 3' also forms a T-antenna structure.

[0129] Among them, Fig. 9As shown, since the feed source 13' is only connected to the radiation branch 11', the radiation branch 11' will simultaneously stimulate the radiation branches 11' and 12' to generate a current i11' in the same direction and will also stimulate the radiation branches 11' and 12' to generate a current i12' in the opposite direction under the stimulation of the feed source 13'. Fig. 9 As shown, the radiation branch 11', under the excitation of the feed source 13', will simultaneously excite the radiation branches 11' and 12' to generate the same-direction current i11', and will also excite the radiation branches 11' and 12' to generate the opposite-direction current i12'. That is, the radiation branch 11' generates the current i11' which is roughly parallel to the length direction of the radiation branch 11', while the radiation branch 12' generates the current i11' which is parallel to the length direction of the radiation branch 11', and the direction / direction is the same as that of the current i11' of the radiation branch 11'; at the same time, the radiation branch 11' also generates the current i12' which is parallel to the length direction of the radiation branch 11', while the radiation branch 12' generates the current i12' which is parallel to the length direction of the radiation branch 12', and the direction / direction is opposite to that of the current i12' of the radiation branch 11'. The same-direction current i11' in the radiation branches 11' and 12' will make the third reference antenna component 3' work in a balanced mode, while the opposite-direction current i12' in the radiation branches 11' and 12' will make the third reference antenna component 3' work in a radiation mode.

[0130] At this time, since the radiation pattern is generated only by the radiation branch 11' under the excitation of the feed source 13', the radiation energy is mostly concentrated in the radiation branch 11', which easily causes the SAR value to exceed the standard. Since a balance mode will also be generated, it will also have an effect on improving the SAR value, further aggravating the problem of SAR value exceeding the standard.

[0131] Therefore, in this application, Figure 8 As shown, under the T-antenna structure, since the current directions of the first radiating branch 11 and the second radiating branch 12 are opposite under the excitation of the first feeding signal and the second feeding signal, respectively, and the whole works in the radiation mode, by feeding the two radiating branches at the same time, the radiation energy can be dispersed in the two radiating branches, thereby reducing the SAR value. And since the current directions of the first radiating branch 11 and the second radiating branch 12 are opposite under the excitation of the first feeding signal and the second feeding signal, respectively, the required conditions for the balanced mode under the T-antenna structure can be effectively destroyed, and it will not work in the balanced mode, that is, it only works in the radiation mode, thereby further effectively avoiding the SAR value from exceeding the standard. Therefore, the present application Figure 8 The antenna assembly 1 shown is compared to the Fig. 9 The third reference antenna assembly 3 ′ shown can effectively reduce the SAR value while ensuring the antenna performance.

[0132] See also Fig.10 , is another simple structure and current distribution diagram of the antenna assembly 1 in some embodiments of the present application. Fig.10 As shown, the antenna assembly 1 also includes a first radiating branch 11, a second radiating branch 12, a feed source 13 and a signal processing unit 14. The first radiating branch 11 includes a first feeding point F1, and the second radiating branch 12 includes a second feeding point F2. Fig.10 As shown, in some embodiments, the first radiation branch 11 and the second radiation branch 12 are connected, and the connection point N1 between the first radiation branch 11 and the second radiation branch 12 is grounded, and the first feed signal and the second feed signal have the same phase to stimulate the first radiation branch 11 and the second radiation branch 12 to generate currents in opposite directions, and the whole works in the radiation mode.

[0133] Among them, Fig.10 As shown, the first radiating branch 11 and the second radiating branch 12 are straight and perpendicular to each other. The first radiating branch 11 and the second radiating branch 12 are connected to form a radiating branch that is bent as a whole, for example Fig.10 The radiating branches shown are generally "L" shaped. At this time, the antenna assembly 1 actually still forms a T-antenna structure, except that the first radiating branches 11 and the second radiating branches 12 located on both sides of the ground connection point N1 are in a vertical relationship.

[0134] As mentioned above, for the T antenna structure, when the currents of the first radiating branch 11 and the second radiating branch 12 are opposite, the condition for working in the radiation mode is met, and when the currents of the first radiating branch 11 and the second radiating branch 12 are the same, the condition for working in the balanced mode is met.

[0135] In some embodiments of the present application, for Fig.10In the T-antenna structure shown, the signal processing unit 14 converts the feed signal provided by the feed source into a first feed signal and a second feed signal with the same frequency and phase, and provides them to the first radiation branch 11 and the second radiation branch 12 respectively, so as to stimulate the first radiation branch 11 and the second radiation branch 12 to generate currents in opposite directions. Thus, in the present application, the current directions of the first radiation branch 11 and the second radiation branch 12 under the stimulation of the first feed signal and the second feed signal are opposite, and the whole works in the radiation mode, and by feeding the two radiation branches at the same time, the radiation energy can be dispersed in the two radiation branches, thereby reducing the SAR value. In addition, since the current directions of the first radiation branch 11 and the second radiation branch 12 under the stimulation of the first feed signal and the second feed signal are opposite, the required conditions of the balanced mode under the T-antenna structure can be effectively destroyed, and they will not work in the balanced mode, that is, they only work in the radiation mode, so that the SAR value can be further effectively avoided from exceeding the standard.

[0136] In some embodiments, for Fig.10 In the T-antenna structure shown, similarly, the electrical lengths of the first radiation branch 11 and the second radiation branch 12 are both λ / 4, where λ is the wavelength corresponding to the preset frequency band. Thus, both the first radiation branch 11 and the second radiation branch 12 can resonate in the preset frequency band, thereby achieving dual resonance and effectively improving the radiation performance in the preset frequency band.

[0137] Among them, since the first radiation branch 11 and the second radiation branch 12 are perpendicular to form a bent structure, the direction of the current generated by the first radiation branch 11 and the second radiation branch 12 is specifically clockwise or counterclockwise around the bent structure.

[0138] Among them, Fig.10 As shown, the first radiation branch 11 includes a first end D1 and a second end D2 opposite to each other, the second radiation branch 12 includes a third end D3 and a fourth end D4 opposite to each other, the first end D1 of the first radiation branch 11 and the third end D3 of the second radiation branch 12 are connected and grounded, and the second end D2 of the first radiation branch 11 and the fourth end D4 of the second radiation branch 12 are open ends. Thus, the first radiation branch 11 and the second radiation branch 12 also roughly form a T-antenna structure.

[0139] In some embodiments, the first feeding point F1 and the second feeding point F2 may be symmetrically arranged relative to the connection point N1. For example, the first feeding point F1 and the second feeding point F2 may be symmetrically arranged relative to the connection point N1, and the distances between the first feeding point F1 and the second feeding point F2 and the connection point N1 may be equal.

[0140] Among them, since the phases of the first feed signal and the second feed signal output by the signal processing unit 14 are the same, when the first feed signal excites the first radiation branch 11 to generate a current i11 from the first end D1 to the second end D2, the second feed signal will excite the second radiation branch 12 to generate a current i12 from the third end D3 to the fourth end D4, and when the first feed signal excites the first radiation branch 11 to generate a current i11 from the second end D2 to the first end D1, the second feed signal will excite the second radiation branch 12 to generate a current i12 from the fourth end D4 to the third end D3. Fig.10 As shown, since the direction from the first end D1 to the second end D2 of the first radiation branch 11 and the direction from the fourth end D4 to the third end D3 of the second radiation branch 12 are both approximately clockwise, i.e., approximately the same, the directions of the current i11 and the current i12 are always approximately opposite.

[0141] For example, Fig.10 As shown, the first feeding point F1 and the second feeding point F2 can be both arranged far away from the connection point N1, that is, the first feeding point F1 is arranged at a position close to the second end D2 of the first radiation branch 11, and the second feeding point F2 is arranged at a position close to the fourth end D4 of the second radiation branch 12. When the phases of the first feeding signal and the second feeding signal are the same and both are positive, the first feeding signal will excite the first radiation branch 11 to generate a current i11 from the second end D2 to the first end D1, and the second feeding signal will excite the second radiation branch 12 to generate a current i12 from the fourth end D4 to the third end D3, so that the current i11 is approximately counterclockwise around the meandering structure, and the current i12 is approximately clockwise around the meandering structure, so that the directions of the current i11 and the current i12 are approximately opposite.

[0142] In this application, Fig.10 In the antenna assembly 1 shown, since the first radiation branch 11 and the second radiation branch 12 are vertically connected, the current directions of the first radiation branch 11 and the second radiation branch 12 under the excitation of the first feeding signal and the second feeding signal are opposite, respectively, and when the whole works in the radiation mode, in addition to feeding the two radiation branches at the same time, the radiation energy can be dispersed in the two radiation branches to reduce the SAR value, and because the first radiation branch 11 and the second radiation branch 12 are vertically connected, the antenna radiation direction will be different. Therefore, in actual use, generally only one radiation branch may radiate electromagnetic waves toward the human body, which can be compared. Figure 8 The structure of the antenna assembly 1 shown can further reduce the SAR value. Similarly, in addition, since the current directions of the first radiation branch 11 and the second radiation branch 12 are opposite under the excitation of the first feed signal and the second feed signal, respectively, the required conditions of the balanced mode under the T-antenna structure can be effectively destroyed, and it will not work in the balanced mode, that is, it only works in the radiation mode, thereby further effectively avoiding the SAR value from exceeding the standard.

[0143] in, Fig.10 The structure of the antenna assembly 1 shown is similar to Figure 8 The main difference of the structure of the antenna assembly 1 shown is that the first radiation branch 11 and the second radiation branch 12 are perpendicular to each other. Figure 8 The structures of the antenna assemblies 1 shown are substantially the same.

[0144] In some embodiments, the Figure 8 as well as Fig.10 The antenna assembly 1 and Fig. 9 The frequency band supported by the third reference antenna assembly 3' shown may also be a medium-high frequency band. That is, in some embodiments, when the structure of the antenna assembly 1 is Figure 8 and Fig.10 In the T antenna structure shown, the preset frequency band may be a medium-high frequency band, for example, the B3 band (1.71-1.88 GHz), the B1 band (1.92-2.17 GHz), the B40 band (2.3-2.4 GHz), the B41 band (2.496-2.69 GHz), and the like.

[0145] Obviously, in other embodiments, the Figure 8 as well as Fig.10 The antenna assembly 1 and Fig. 9 The frequency band supported by the third reference antenna assembly 3 ′ shown may also be other frequency bands, such as a low frequency band, a medium frequency band, a high frequency band, and the like.

[0146] In some embodiments, Figure 8 The antenna assembly 1 shown can be a pair Fig. 9 The third reference antenna assembly 3' is shown as an improvement. Fig.10 The antenna assembly 1 shown can be a pair Fig. 9 The third reference antenna assembly 3' shown in the figure can also be improved upon Figure 6 The second reference antenna assembly 2' shown is improved, for example, Fig.10 The antenna assembly 1 shown may be an improvement of the third reference antenna assembly 3' of the T-antenna structure, which is improved into a bent T-antenna, and the two radiation branches are fed simultaneously through the signal processing unit 14; for another example, Fig.10 The antenna assembly 1 shown can be a pair Figure 6 The second reference antenna component 2' shown is improved by retaining the bent radiation branch 11' in the second reference antenna component 2', and then grounding the middle position of the radiation branch 11' to form two radiation branches, and then feeding the two radiation branches simultaneously through the signal processing unit 14.

[0147] See also Fig.11 , which is a simple structural schematic diagram of a further variation of the antenna assembly 1 in some embodiments of the present application. In some embodiments, when the second end D2 of the first radiation branch 11 and the fourth end D4 of the second radiation branch 12 are open ends, the antenna assembly 1 further includes at least one parasitic branch 102, and the at least one parasitic branch 102 is adjacent to and spaced from the second end D2 of the first radiation branch 11 and / or the fourth end D4 of the second radiation branch 12.

[0148] That is, in some embodiments, when the second end D2 of the first radiating branch 11 and the fourth end D4 of the second radiating branch 12 are open ends, the antenna component 1 also includes a parasitic branch 102, and the parasitic branch 102 is adjacent to and spaced apart from the second end D2 of the first radiating branch 11, or is adjacent to and spaced apart from the fourth end D4 of the second radiating branch 12; or, the antenna component 1 includes two parasitic branches 102, one of which is adjacent to and spaced apart from the second end D2 of the first radiating branch 11, and the other parasitic branch 102 is adjacent to and spaced apart from the fourth end D4 of the second radiating branch 12.

[0149] Among them, since the frequency and phase of the first feed signal and the second feed signal are the same, and as described later, the first feed signal and the second feed signal divided by the power divider are the same two feed signals, so the amplitude is also the same, the first radiation branch 11 and the second radiation branch 12 are fed with equal amplitude and in phase, and by adding at least one parasitic branch 102, it can further resonate in other frequency bands, thereby effectively widening the bandwidth of the antenna component 1. For example, the antenna component 1 can originally only work in a certain frequency band, and by adding at least one parasitic branch 102, it can also couple and excite the parasitic branch 102 to resonate in other frequency bands, such as adjacent or similar frequency bands, to widen the bandwidth. For another example, the antenna component 1 can originally only work in the B3 frequency band, and by adding at least one parasitic branch 102, it can also couple and excite the parasitic branch 102 to resonate in the B1 frequency band, the B40 frequency band and other frequency bands, thereby covering multiple frequency bands.

[0150] Among them, for the second reference component 2' or the third reference component 3', it can only work in a certain frequency band. It is necessary to switch the matching parameter value by adding a switch matching unit, that is, a structure including a switching switch and multiple matching elements at the same time, so that the electrical length meets the requirements of other frequency bands and can be switched to support other frequency bands. However, this requires an additional switch matching unit, which increases the cost. In addition, the insertion loss of the switch matching unit itself will lead to reduced efficiency. In the present application, by adding at least one parasitic branch 102, the bandwidth of the antenna component 1 can be effectively broadened without the need for additional switch matching elements, which saves costs, improves efficiency, and improves antenna radiation performance.

[0151] Among them, Fig.11 As shown, the antenna assembly 1 also includes a first radiating branch 11, a second radiating branch 12, a feed source 13 and a signal processing unit 14. The first radiating branch 11 includes a first feeding point F1, and the second radiating branch 12 includes a second feeding point F2. The first radiating branch 11 and the second radiating branch 12 are connected, and the connection point N1 of the first radiating branch 11 and the second radiating branch 12 is grounded. The first feed signal and the second feed signal have the same phase to stimulate the first radiating branch 11 and the second radiating branch 12 to generate currents in opposite directions, and the whole works in the radiation mode. Wherein, as Fig.11 As shown, the first radiating branch 11 and the second radiating branch 12 are straight and perpendicular to each other. The first radiating branch 11 and the second radiating branch 12 are connected to form a radiating branch that is bent as a whole, for example Fig.11 The radiating branches are shown to be generally "L" shaped.

[0152] in, Fig.11 The structures of the first radiation branch 11 and the second radiation branch 12 of the antenna assembly 1 are similar to those of Fig.10 The structure shown is the same. That is, Fig.11 The antenna assembly 1 shown may be Fig.10 The parasitic branch 102 is added to the antenna assembly 1 shown.

[0153] Obviously, in some embodiments, Figure 8 The parasitic branch 102 is added to the antenna assembly 1 shown in FIG. Figure 1 , Figure 2 , Figure 4 , Figure 5 When the second end D2 of the first radiation branch 11 and the fourth end D4 of the second radiation branch 12 of the antenna assembly 1 are open ends, Figure 1 , Figure 2 , Figure 4, Figure 5 The parasitic branch 102 is added to the antenna assembly 1 shown.

[0154] Among them, Fig.11 As shown, in some embodiments, the antenna assembly 1 includes a parasitic branch 102, which is adjacent to and spaced from the second end D2 of the first radiation branch 11. Obviously, as mentioned above, the parasitic branch 102 can also be adjacent to and spaced from the fourth end D4 of the second radiation branch 12.

[0155] In this application, when the parasitic branch 102 is adjacent to the second end D2 of the first radiating branch 11 and is spaced apart, the parasitic branch 102 is parallel to the length direction of the first radiating branch 11, and the parasitic branch 102 and the first radiating branch 11 are spaced apart along the length direction; when the parasitic branch 102 is adjacent to the fourth end D4 of the second radiating branch 12 and is spaced apart, the parasitic branch 102 is parallel to the length direction of the second radiating branch 12, and the parasitic branch 102 and the second radiating branch 12 are spaced apart along the length direction.

[0156] The length direction of the parasitic branch 102 , the first radiation branch 11 and the second radiation branch 12 is the extension direction of the longest side of the parasitic branch 102 , the first radiation branch 11 and the second radiation branch 12 .

[0157] See also Fig.12 , which is a simple structural diagram of a further variation of the antenna assembly 1 in some embodiments of the present application. Fig.11 In comparison, Fig.12 As shown, the antenna assembly 1 includes two parasitic branches 102 , one of which is adjacent to and spaced from the second end D2 of the first radiation branch 11 , and the other parasitic branch 102 is adjacent to and spaced from the fourth end D4 of the second radiation branch 12 .

[0158] That is, in some embodiments, as described above, the antenna assembly 1 includes two parasitic branches 102, and a parasitic branch 102 can be provided on one side of the second end D2 of the first radiation branch 11 and one side of the fourth end D4 of the second radiation branch 12. Thus, by providing two parasitic branches 102, the first radiation branch 11 can couple and excite the corresponding parasitic branch 102 to resonate in an adjacent or similar frequency band of the preset frequency band, and the second radiation branch 12 can also couple and excite the corresponding parasitic branch 102 to resonate in another adjacent or similar frequency band, thereby further widening the bandwidth.

[0159] Among them, Fig.11 as well as Fig.12 As shown, one end of the parasitic branch 102 away from the first radiation branch 11 or the second radiation branch 12 is grounded. That is, when the parasitic branch 102 is adjacent to the second end D2 of the first radiation branch 11 and is spaced apart, the end of the parasitic branch 102 away from the first radiation branch 11 is grounded, and when the parasitic branch 102 is adjacent to the fourth end D4 of the second radiation branch 12 and is spaced apart, the end of the parasitic branch 102 away from the first radiation branch 11 is grounded.

[0160] in, Fig.12 The antenna assembly 1 shown may also be Fig.10 The two parasitic branches 102 are added to the antenna assembly 1 shown.

[0161] Obviously, in some embodiments, Figure 8 The two parasitic branches 102 are added to the antenna assembly 1 shown in FIG. Figure 1 , Figure 2 , Figure 4 , Figure 5 When the second end D2 of the first radiation branch 11 and the fourth end D4 of the second radiation branch 12 of the antenna assembly 1 are open ends, Figure 1 , Figure 2 , Figure 4 , Figure 5 The two parasitic branches 102 are added to the antenna assembly 1 shown.

[0162] See also Fig.13 , is a simple structural diagram of a further variant of the antenna assembly 1 in some embodiments of the present application. Fig.13 As shown, the antenna assembly 1 includes two parasitic branches 102, one of which is adjacent to and spaced from the second end D2 of the first radiation branch 11, and the other parasitic branch 102 is adjacent to and spaced from the fourth end D4 of the second radiation branch 12, and one end of the parasitic branch 102 away from the first radiation branch 11 or the second radiation branch 12 is grounded, and the middle position of the other parasitic branch 102 is grounded. Fig.13 The parasitic branch 102 grounded in the middle position is roughly a T antenna.

[0163] in, Fig.13, the end of the parasitic branch 102 which is adjacent to and spaced from the second end D2 of the first radiation branch 11 and is away from the first radiation branch 11 is grounded, and the middle position of the parasitic branch 102 which is adjacent to and spaced from the fourth end D4 of the second radiation branch 12 is grounded, so as to form a T antenna. Obviously, in some embodiments, the middle position of the parasitic branch 102 which is adjacent to and spaced from the second end D2 of the first radiation branch 11 is grounded, and the end of the parasitic branch 102 which is adjacent to and spaced from the fourth end D4 of the second radiation branch 12 and is away from the first radiation branch 11 is grounded.

[0164] Therefore, the parasitic branch 102 grounded at the middle position is actually divided into two parasitic branches by the grounding position, which is equivalent to adding two parasitic branches on one side of the fourth end D4 of the second radiation branch 12, thereby actually increasing the number of parasitic branches and further widening the bandwidth.

[0165] Obviously, in some embodiments, the antenna assembly 1 may only include a parasitic branch 102 adjacent to and spaced from the second end D2 of the first radiation branch 11 or the fourth end D4 of the second radiation branch 12, and the middle position of the parasitic branch 102 is grounded.

[0166] Therefore, in some embodiments, the aforementioned at least one parasitic branch 102 is adjacent to and spaced apart from the second end D2 of the first radiation branch 11 and / or the fourth end D4 of the second radiation branch 12, which may specifically include: there is at least one parasitic branch 102 adjacent to and spaced apart from the second end D2 of the first radiation branch 11, and / or there is at least one parasitic branch 102 adjacent to and spaced apart from the fourth end D4 of the second radiation branch 12.

[0167] in, Fig.13 The antenna assembly 1 shown may also be Fig.10 The parasitic branch 102 is added to the antenna assembly 1 shown.

[0168] In some embodiments, as described above, due to Figure 8 The second end D2 of the first radiation branch 11 and the fourth end D4 of the second radiation branch 12 of the antenna assembly 1 are open ends. Figure 8 The antenna assembly 1 shown may also include at least one parasitic branch, which is adjacent to and spaced from the second end D2 of the first radiation branch 11 and / or the fourth end D4 of the second radiation branch 12. That is, in some embodiments, Figure 8 The at least one parasitic branch 102 is added to the antenna assembly 1 shown.

[0169] Obviously, in some embodiments, when Figure 1 , Figure 2 , Figure 4 , Figure 5 When the second end D2 of the first radiation branch 11 and the fourth end D4 of the second radiation branch 12 of the antenna assembly 1 are open ends, Figure 1 , Figure 2 , Figure 4 , Figure 5 At least one parasitic branch 102 is added to the antenna assembly 1 shown. Figure 1 , Figure 2 , Figure 4 , Figure 5 , Figure 8 The parasitic branch 102 is added to the antenna assembly 1 shown in the figure. Fig.10 The solution of adding the parasitic branch 102 to the antenna assembly 1 is similar and will not be described in detail here.

[0170] In some embodiments, when the antenna assembly 1 includes at least one parasitic branch 102, at least one parasitic branch 102 can also be connected to an adjustable matching unit, and the electrical length can be adjusted by the adjustable matching unit to support other frequency bands that are farther apart. For example, the adjustable matching unit can also support high frequencies, such as the N78 frequency band (3.4-3.6GHz).

[0171] See also Fig.14 , is another structural diagram of the signal processing unit 14 in some embodiments of the present application. Among them, in some embodiments, Figure 8 , Fig.10 , Figure 11-13 The signal processing unit 14 shown in the figure may include a power divider 141, and the power divider 141 includes a first input terminal 141a, a first output terminal 141b and a second output terminal 141c. The first input terminal 141a is connected to the feed source 13, the first output terminal 141b is connected to the first feeding point F1 of the first radiation branch 11, and the second output terminal 141c is connected to the second feeding point F2 of the second radiation branch 12. The power divider 141 is used to divide the feed signal output by the feed source 13 into two feed signals with the same frequency and phase, and output them through the first output terminal 141b and the second output terminal 141c respectively, so that the first feeding point F1 and the second feeding point F2 respectively receive the first feeding signal and the second feeding signal with the same frequency and phase.

[0172] That is, in some embodiments, when the first radiating branch 11 and the second radiating branch 12 form a T-antenna structure, the signal processing unit 14 may only include a power divider 141, so that the phase and frequency of the first feed signal and the second feed signal provided to the first radiating branch 11 and the second radiating branch 12 are the same, so that the currents flowing through the first radiating branch 11 and the second radiating branch 12 are approximately opposite, thereby satisfying the condition of operating in a balanced mode under the T-antenna structure.

[0173] In some embodiments, the power divider 141 may be an integrated power divider integrated in the feed source 13. Obviously, in some embodiments, the power divider 141 may also be any other known device that can realize dividing one input signal into two identical output signals.

[0174] In some embodiments, Figure 1 , Figure 2 , Figure 4 , Figure 5 As shown in the figures, in some embodiments, the antenna assembly 1 further includes a matching unit M1, which is connected between the feed source 13 and the signal processing unit 14 and is used to perform corresponding impedance matching adjustments to better resonate in the preset frequency band.

[0175] When the antenna assembly 1 further includes a matching unit M1 , the first input end 141 a of the power divider 141 is connected to the feed source 13 , specifically, the first input end 141 a of the power divider 141 is connected to the feed source 13 through the matching unit M1 .

[0176] See also Fig.15 , is a schematic diagram of a matching unit M1 in some embodiments of the present application. Fig.15 As shown, the first matching unit M1 may include a first inductor L11, a first capacitor C11, a second inductor L12 and a second capacitor C12, wherein the first inductor L11 and the first capacitor C11 are connected in parallel, the second inductor L12 and the second capacitor C12 are connected in parallel, and then the first inductor L11 and the first capacitor C11 connected in parallel and the second inductor L12 and the second capacitor C12 connected in parallel are connected in series between the feed source 13 and the signal processing unit 14.

[0177] in, Fig.15 This is just an example, and the matching unit M1 may also include other structures, such as an inductor and a capacitor connected in parallel, or an inductor and a capacitor connected in series, or a structure in which an inductor and a capacitor are connected in parallel and then connected in series with an inductor or a capacitor, or a structure in which a series branch of a capacitor and an inductor are connected in series with a capacitor or / inductor, and the like.

[0178] See also Fig.16 , is a structural block diagram of an electronic device 100 in some embodiments of the present application. Fig.16 As shown, the electronic device 100 may include the antenna assembly 1 in any of the aforementioned embodiments.

[0179] Thus, the electronic device 100, by providing the antenna assembly 1 in any of the aforementioned embodiments, can feed two radiating branches at the same time, so that the radiation energy can be dispersed in the two radiating branches, thereby reducing the SAR value, and since the two radiating branches are excited and work as a whole in the radiation mode to support the reception and transmission of electromagnetic wave signals in a preset frequency band, the radiation performance can be effectively ensured. Thus, the radiation performance of the antenna can be effectively ensured and the SAR value can be prevented from exceeding the standard.

[0180] See also Fig.17 , is a schematic plan view of an electronic device 100 in some embodiments of the present application. Fig.17 As shown, the electronic device 100 includes the antenna assembly 1. Fig.17 FIG. 1 is a top view schematically showing the structure of the antenna assembly 1 viewed from the back side of the electronic device 100, that is, the side away from the display screen. Figure 1 , Figure 2 , Figure 4 , Figure 5 , Figure 8 , Fig.10 , Figure 11-13 The antenna assembly 1 shown in FIG. 1 is actually the antenna assembly 1 viewed from the back side of the electronic device 100. Figure 3 The first reference antenna assembly 1', Figure 6 The second reference antenna assembly 2' and Fig. 9 The third reference antenna assembly 3' shown may also be an antenna assembly viewed from the back side of the electronic device to which it is applied.

[0181] in, Fig.17 The electronic device 100 shown specifically includes: Figure 1-Figure 2 The antenna assembly 1 is shown. Fig.17 As shown, the electronic device 100 includes a top end D11, a bottom end D12 and two side ends D13 and D14. The opening of the semi-annular structure formed by the radiation branches of the antenna assembly 1 faces upward and is roughly arranged at the bottom end D12 of the electronic device 100.

[0182] That is, when the first radiation branch 11 and the second radiation branch 12 included in the antenna assembly 1 are bent, and the first radiation branch 11 and the second radiation branch 12 form a semi-annular structure, the first radiation branch 11 and the second radiation branch 12 of the antenna assembly 1 are substantially disposed at the bottom end D12 of the electronic device 100. Specifically, Fig.17 As shown, the first radiation sub-branch 111 of the first radiation branch 11 and the third radiation sub-branch 121 of the second radiation branch 12 are arranged at the bottom end D12 of the electronic device 100, and the second radiation sub-branch 112 of the first radiation branch 11 and the fourth radiation sub-branch 122 of the second radiation branch 12 are respectively arranged at the two side ends D13 and D14.

[0183] Obviously, in some embodiments, the first radiation branch 11 and the second radiation branch 12 of the antenna component 1 may also be roughly arranged at the top D11 of the electronic device 100. For example, the opening of the semi-annular structure formed by the radiation branches of the antenna component 1 faces downward, the first radiation sub-branch 111 of the first radiation branch 11 and the third radiation sub-branch 121 of the second radiation branch 12 are arranged at the top D11 of the electronic device 100, and the second radiation sub-branch 112 of the first radiation branch 11 and the fourth radiation sub-branch 122 of the second radiation branch 12 are respectively arranged at two side ends D13 and D14.

[0184] Among them, the directional terms such as "top" and "bottom" used in the embodiments of the present application to describe the electronic device 100 are mainly explained based on the orientation of the electronic device 100 when the user holds it in hand. The position toward the top side of the electronic device 100 is the "top", and the position toward the bottom side of the electronic device 100 is the "bottom". It does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the orientation of the electronic device 100 in actual application scenarios. In some embodiments, the bottom end of the electronic device 100 is the end where the headphone jack and the USB port are provided, and the top end of the electronic device 100 is the other end opposite to the end where the headphone jack and the USB port are provided, and may also refer to the end where a camera, a receiver, etc. are provided.

[0185] See also Fig.18 , is a schematic diagram of return loss (S parameter) and antenna efficiency of an electronic device 100 in some embodiments of the present application. The electronic device 100 may be Fig.17 The electronic device shown includes Figure 1-Figure 2 An electronic device with an antenna assembly 1 is shown. Fig.18 The electronic device 100 includes Figure 1-Figure 2The schematic diagram of return loss and antenna efficiency shown is a schematic diagram of a simulation test of the antenna assembly 1 operating in a preset frequency band as an example.

[0186] Among them, antenna efficiency includes radiation efficiency and system total efficiency. Fig.18 Schematically shows the return loss curve S11, the radiation efficiency curve Sr1 and the system total efficiency curve St1 of the electronic device 100. In a certain frequency band, the frequency corresponding to the lowest point of the same input return loss curve is the resonant frequency point. The lower the input return loss, the lower the loss at the resonant frequency, and the higher the antenna efficiency.

[0187] like Fig.18 As shown, at the resonant frequency of the preset frequency band, the return loss of the antenna assembly 1 is approximately -8dB, the total system efficiency is approximately -3dB, and the radiation efficiency is also approximately -2dB.

[0188] In general, the system's overall efficiency and radiation efficiency are generally acceptable, and the return loss is low.

[0189] Wherein, in some embodiments, Fig.18 As shown, the preset frequency band may be the B28 frequency band (700 MHz to 800 MHz) in the low frequency band, and the resonant frequency is approximately located around 750 MHz (0.75 GHz).

[0190] Obviously, similarly, Fig.18 This is just an example taking the B28 frequency band as an example. As mentioned above, the preset frequency band may be any other frequency band.

[0191] See also Fig.19 , which is a schematic diagram comparing the return loss of the electronic device 100 in some embodiments of the present application and a reference electronic device in free space and hand-held scenarios. The electronic device 100 may be Fig.17 The electronic device shown includes Figure 1-Figure 2 The electronic device 100 of the antenna assembly 1 shown in the figure may include the aforementioned Figure 3 The first reference antenna assembly 1' is shown. The reference electronic device may include the aforementioned Figure 3 When the first reference antenna assembly 1' is shown, the position of the first reference antenna assembly 1' in the reference electronic device can be the same as that of the first reference antenna assembly 1' in the reference electronic device. Fig.17 The position of the antenna assembly 1 shown in the electronic device 100 is substantially the same.

[0192] in, Fig.19 The electronic device 100 includes Figure 1-Figure 2The antenna assembly 1 shown in the figure works in a preset frequency band as an example. The return loss curves S11-1 and S11-2 of the electronic device 100 in the free space and hand-held scenes are obtained, and the reference electronic device includes Figure 3 The antenna assembly 1' shown is obtained by simulation test for example when it works in a preset frequency band, and the reference electronic device is return loss curves S11-1' and S11-2' in the free space and hand-held scenes, respectively.

[0193] from Fig.19 It can be seen that at the resonant frequency of 0.75 GHz, the return loss of the electronic device 100 in free space is approximately -8.2 dB, and the return loss in the hand-held scenario is approximately -2.9 dB. The return loss of the reference electronic device in free space is approximately -7.9 dB, and the return loss in the hand-held scenario is approximately -2.5 dB.

[0194] It can be seen that in the present application, the return loss of the electronic device 100 in free space and hand-held scenarios is slightly lower than the return loss of the reference electronic device in free space and hand-held scenarios, respectively, with lower loss and relatively higher antenna efficiency. As mentioned above, the antenna assembly 1 of the electronic device 100 of the present application can disperse the radiation energy to the two radiation branches and reduce the SAR value by feeding the two radiation branches at the same time. Therefore, the antenna assembly 1 of the present application can effectively reduce the SAR value while ensuring or even improving the antenna performance.

[0195] In some embodiments, the hand holding scene may be a left hand holding scene. Figure 1 , Figure 2 , Figure 4 , Figure 5 , Figure 8 , Fig.10 , Figure 11-13 The antenna assembly 1 shown in FIG. 1 is actually the antenna assembly 1 viewed from the back side of the electronic device 100. Figure 3 The first reference antenna assembly 1', Figure 6 The second reference antenna assembly 2' and Fig. 9 The third reference antenna assembly 3' shown may also be an antenna assembly viewed from the back side of the electronic device to which it is applied.

[0196] The hand-held scene is usually a normal holding scene of the electronic device when viewed from the display screen side. Therefore, for the third reference antenna assembly 3', the radiation branch 11' connected to the feed source 13' is located on the left side when viewed from the display screen side, and in the left-hand holding scene, it will be held by the left hand. Fig.19 It can be seen that in the hand-held scenario, the return loss of the reference electronic device 100 is significantly increased, which has a greater impact. However, the antenna component 1 of the electronic device 100 of the present application disperses the radiation energy to two radiation branches, so the return loss is relatively low.

[0197] See also Fig. 20 , which is a schematic diagram comparing the antenna efficiency of the electronic device 100 in some embodiments of the present application and a reference electronic device in free space and hand-held scenarios. The electronic device 100 may be Fig.17 The electronic device shown includes Figure 1-Figure 2 The electronic device of the antenna assembly 1 shown in the figure may include the aforementioned Figure 3 The antenna assembly 1' is shown.

[0198] in, Fig. 20 The electronic device 100 includes Figure 1-Figure 2 The antenna assembly 1 shown in the figure is operated in a preset frequency band as an example. The radiation efficiency curve Sr1 and the system total efficiency curve St1 of the electronic device 100 in the free space scenario, the radiation efficiency curve Sr2 and the system total efficiency curve St2 in the hand-held scenario, and the reference electronic device includes Figure 3 The antenna assembly 1' shown is obtained by simulation test using the preset frequency band as an example, and the reference electronic device has a radiation efficiency curve Sr1' and a system total efficiency curve St1' in a free space scenario, and a radiation efficiency curve Sr2' and a system total efficiency curve St2' in a hand-held scenario.

[0199] in, Fig.19 and Fig. 20 The simulation is also performed by taking the preset frequency band as the B28 frequency band (700 MHz to 800 MHz) in the low frequency band as an example.

[0200] like Fig. 20 As shown, at the resonant frequency of 0.75 GHz in the B28 frequency band, the radiation efficiency of the electronic device 100 in the free space scenario is approximately -2dB, and the total system efficiency is approximately -2.5dB. The radiation efficiency in the hand-held scenario is approximately -7dB, and the total system efficiency is approximately -10dB. The radiation efficiency of the reference electronic device in the free space scenario is approximately -2dB, and the total system efficiency is approximately -2.5dB. The radiation efficiency in the hand-held scenario is approximately -7dB, and the total system efficiency is approximately -11dB.

[0201] from Fig. 20It can be seen that the radiation efficiency and the total system efficiency of the electronic device 100 in free space and handheld scenarios are not much different from those of the reference electronic device in free space and handheld scenarios, and the total system efficiency in the handheld scenario has been improved to a certain extent. It can be seen that in the present application, the antenna efficiency of the electronic device 100 in free space and hand-held scenarios is basically the same as or even relatively higher than that of the reference electronic device. As mentioned above, the antenna assembly 1 of the electronic device 100 of the present application, because it feeds two radiating branches at the same time, can disperse the radiation energy to the two radiating branches, thereby reducing the SAR value. Therefore, the antenna assembly 1 of the present application can effectively reduce the SAR value while ensuring or even improving the antenna performance.

[0202] See also Fig.21 , is a schematic diagram of radiation energy of an electronic device 100 and a reference electronic device in some embodiments of the present application. The electronic device 100 may be Fig.17 The electronic device shown includes Figure 1-Figure 2 The electronic device of the antenna assembly 1 shown in the figure may include the aforementioned Figure 3 A first reference antenna assembly 1 ′ is shown.

[0203] in, Fig.21 The radiation energy of the electronic device 100 is shown in FIG. Fig.21 a and the radiation energy of reference electronic equipment Fig.21 b, where the darker the color, the greater the radiation energy, and the location with high radiation energy is also the SAR hotspot location. Fig.21 As shown, the radiation energy of the first reference antenna component 1' of the reference electronic device is more concentrated and mainly at the position of the radiation branch 11', while the radiation energy of the antenna component 1 of the electronic device 100 of the present application is dispersed in the first radiation branch 11 and the second radiation branch 12, which can effectively reduce the SAR value.

[0204] Among them, since the radiation energy of the antenna assembly 1 is dispersed in the first radiation branch 11 and the second radiation branch 12, the SAR hotspot is more uniform. Figure 3 For the first reference antenna assembly 1 ′ shown, it is found through testing that the SAR value is reduced from 0.33 W / kg to 0.27 W / kg, and the SAR is reduced by 20%.

[0205] In some embodiments, the electronic device is a straight-type electronic device, and the first radiation branch 11 and the second radiation branch 12 are arranged at one end or at least two adjacent ends of the electronic device 100. For example, as described above, Fig.17As shown, the first radiation branch 11 and the second radiation branch 12 of the antenna assembly 1 are roughly arranged at the bottom end D12 of the electronic device 100. For example, the first radiation sub-branch 111 of the first radiation branch 11 and the third radiation sub-branch 121 of the second radiation branch 12 are arranged at the bottom end D12 of the electronic device 100, and the second radiation sub-branch 112 of the first radiation branch 11 and the fourth radiation sub-branch 122 of the second radiation branch 12 are respectively arranged at two side ends D13 and D14.

[0206] In some embodiments, the electronic device 100 may also be a foldable electronic device, including a hinge, a first main body portion and a second main body portion, the first main body portion and the second main body portion rotate around the hinge, so that the electronic device 100 is in a folded state or an unfolded state, the first radiating branch 11 and the second radiating branch 12 are arranged in one of the first main body portion and the second main body portion, and are located at one end or at least two adjacent ends of one of the first main body portion and the second main body portion.

[0207] See also Fig. 22 , is another plan view of the electronic device 100 in some embodiments of the present application. Fig. 22 As shown, the electronic device 100 includes the antenna assembly 1. Fig. 22 It is also a schematic top view showing the structure of the antenna assembly 1 viewed from the back side of the electronic device 100 , ie, the side away from the display screen.

[0208] in, Fig. 22 The electronic device 100 shown specifically includes: Figure 5 The antenna assembly 1 is shown. Fig. 22 As shown, the electronic device 100 includes a top end D11, a bottom end D12, and two side ends D13 and D14. Figure 5 The radiation branches of the antenna assembly 1 are shown to be arranged roughly at the top corners of the electronic device 100 .

[0209] That is, when the first radiation branch 11 included in the antenna assembly 1 is bent, the second radiation branch 12 is straight, and the first radiation branch 11 and the second radiation branch 12 form a bent structure as a whole, the first radiation branch 11 and the second radiation branch 12 of the antenna assembly 1 are roughly arranged at a vertex position of the electronic device 100. For example, Fig. 22 As shown, the first radiation sub-branch 111 and the second radiation sub-branch 112 of the first radiation branch 11 are respectively arranged at the top end D11 and the side end D14, and the second radiation branch 12 is arranged at the top end D11, and the Fig. 22At the upper right corner of the perspective shown.

[0210] Obviously, in some embodiments, the first radiation branch 11 and the second radiation branch 12 of the antenna assembly 1 can also be roughly arranged at other vertex positions of the electronic device 100. For example, the first radiation sub-branch 111 and the second radiation sub-branch 112 of the first radiation branch 11 are respectively arranged at the top end D11 and the side end D13, and the second radiation branch 12 is arranged at the top end D11, and the second radiation branch 12 is arranged at the top end D11. Fig. 22 At the upper left corner of the perspective shown, and so on.

[0211] Among them, Fig. 22 As shown, in some embodiments, the electronic device 100 may be a tablet-type electronic device.

[0212] See also Fig.23 , is another plan view of a variation of the electronic device 100 in some embodiments of the present application. Fig.23 As shown, the electronic device 100 also includes Figure 5 The antenna assembly 1 is shown.

[0213] Among them, Fig.23 As shown, the electronic device 100 may be a foldable electronic device, including a hinge 110, a first main body portion 120 and a second main body portion 130, the first main body portion 120 and the second main body portion 130 rotate around the hinge 110, so that the electronic device 100 is in a folded state or an unfolded state, the first radiating branch 11 and the second radiating branch 12 are arranged in one of the first main body portion 120 and the second main body portion 130, and are located at one end or at least two adjacent ends of one of the first main body portion 120 and the second main body portion 130.

[0214] in, Fig.23 In the embodiment, the first radiation branch 11 and the second radiation branch 12 are both arranged on the second main body 130. Fig.23 As shown, the first radiation sub-branch 111 and the second radiation sub-branch 112 of the first radiation branch 11 are respectively arranged at the top end D11 and the side end D14 of the second body portion 130, and the second radiation branch 12 is arranged at the top end D11. Fig.23 The upper right corner of the second main body portion 130 in the viewing angle shown.

[0215] See also Fig.24 , is a schematic diagram showing a comparison of return loss between the electronic device 100 in some embodiments of the present application and a reference electronic device. The electronic device 100 may be Fig.23The electronic device 100 shown includes Figure 5 The electronic device 100 of the antenna assembly 1 shown is a foldable electronic device, and the reference electronic device may include the aforementioned Figure 6 The second reference antenna assembly 2' is shown. The reference electronic device comprises the aforementioned Figure 6 When the second reference antenna assembly 2' is shown, the position of the second reference antenna assembly 2' in the reference electronic device can be the same as that of the reference antenna assembly 2' in the reference electronic device. Fig.23 The position of the antenna assembly 1 shown in the electronic device 100 is substantially the same.

[0216] in, Fig.23 The electronic device 100 shown is a foldable electronic device, which can be in a folded state and an unfolded state, and the reference electronic device is also a foldable electronic device. Fig.24 The return loss curve S11-3 of the electronic device 100 in the unfolded state, the return loss curve S11-4 in the folded state, and the return loss curve S11-3' of the reference electronic device in the unfolded state, and the return loss curve S11-4' in the folded state are shown. In a certain frequency band, the frequency corresponding to the lowest point of the same input return loss curve is the resonant frequency point. The lower the input return loss, the lower the loss at the resonant frequency, and the higher the antenna efficiency.

[0217] In some embodiments, as described above, Figure 5 The antenna assembly 1 and Figure 6 The preset frequency band supported by the second reference antenna assembly 2' shown in the figure may be a medium or high frequency band. Fig.23 As shown, in some embodiments, the preset frequency band may be the B3 frequency band (1.71-1.88 GHz) in the mid-high frequency band, and the resonant frequency is approximately located around 1.8 GHz.

[0218] like Fig.24 As shown, near the resonant frequency of the preset frequency band, that is, near 1.8 GHz, the return loss of the electronic device 100 in the unfolded state is approximately -35 dB, and the return loss in the folded state is approximately -11 dB. The return loss of the reference electronic device in the unfolded state is approximately -11 dB, and the return loss in the folded state is -8 dB.

[0219] It can be seen that for Figure 5 The electronic device 100 with the antenna assembly 1 shown has a return loss of the antenna assembly 1 in the folded state and the unfolded state that is lower than the return loss of the reference electronic device 100, thereby effectively reducing the return loss and improving the antenna performance.

[0220] See also Fig.25 , which is a schematic diagram comparing the antenna efficiency of the electronic device 100 in some embodiments of the present application and a reference electronic device. The electronic device 100 may be Fig.23 The electronic device 100 shown includes Figure 5 The electronic device 100 of the antenna assembly 1 shown is a foldable electronic device, and the reference electronic device may include the aforementioned Figure 6 The second reference antenna assembly 2' is shown. The reference electronic device may include the aforementioned Figure 5 When the second reference antenna assembly 2' is shown, the position of the second reference antenna assembly 2' in the reference electronic device can be the same as that of the reference antenna assembly 2' in the reference electronic device. Fig.23 The position of the antenna assembly 1 shown in the electronic device 100 is substantially the same.

[0221] Among them, similarly, Fig.23 The electronic device 100 shown is a foldable electronic device, which can be in a folded state and an unfolded state, and the reference electronic device is also a foldable electronic device. Fig.25 The diagram illustrates the radiation efficiency curve Sr3 of the electronic device 100 in the unfolded state, the radiation efficiency curve Sr4 of the folded state, the total system efficiency curve St3 of the unfolded state, and the total system efficiency curve St4 of the folded state, as well as the radiation efficiency curve Sr3' of the reference electronic device in the unfolded state, the radiation efficiency curve Sr4' of the folded state, the total system efficiency curve St3' of the unfolded state, and the total system efficiency curve St4' of the folded state.

[0222] like Fig.25 As shown, at the resonant frequency of the preset frequency band, that is, 1.8 GHz, the radiation efficiency of the electronic device 100 in the unfolded state is approximately -1.7 dB, the radiation efficiency in the folded state is approximately -4.5 dB, the total system efficiency in the unfolded state is approximately -2.2 dB, and the total system efficiency in the folded state is approximately -4.8 dB; the radiation efficiency of the reference electronic device in the unfolded state is approximately -2.5 dB, the radiation efficiency in the folded state is approximately -5.2 dB, the total system efficiency in the unfolded state is approximately -2.9 dB, and the total system efficiency in the folded state is approximately -5.8 dB.

[0223] As can be seen from the above, the electronic device 100 includes Figure 5 When the antenna assembly 1 shown is a foldable electronic device, compared with the foldable electronic device also including Figure 6The reference electronic device of the second reference antenna assembly 2' shown in the figure has a certain improvement in radiation efficiency and system overall efficiency, whether in the folded state or in the unfolded state. As mentioned above, the antenna assembly 1 of the electronic device 100 of the present application can feed two radiation branches at the same time, so that the radiation energy can be dispersed in the two radiation branches, thereby reducing the SAR value. Therefore, the electronic device 100 of the present application, in the case of including Figure 5 The antenna assembly 1 shown can also effectively reduce the SAR value while ensuring or even improving the antenna performance.

[0224] in, Fig.24 and Fig.25 Specifically, it may be a schematic diagram obtained by performing simulation tests on the electronic device 100 and a reference electronic device in a free space scenario.

[0225] See also Fig.26 , is a schematic diagram comparing the return loss of the electronic device 100 in some embodiments of the present application and a reference electronic device in a folded state. The electronic device 100 may be Fig.23 The electronic device 100 shown includes Figure 5 The electronic device 100 of the antenna assembly 1 shown is a foldable electronic device, and the reference electronic device may include the aforementioned Figure 6 The second reference antenna assembly 2' is shown. The reference electronic device comprises the aforementioned Figure 6 When the second reference antenna assembly 2' is shown, the position of the second reference antenna assembly 2' in the reference electronic device can be the same as that of the reference antenna assembly 2' in the reference electronic device. Fig.23 The position of the antenna assembly 1 shown in the electronic device 100 is substantially the same.

[0226] in, Fig.23 The electronic device 100 shown is a foldable electronic device, which can be in a folded state and an unfolded state, and the reference electronic device is also a foldable electronic device. Fig.26 The diagram illustrates a return loss curve S11-5 when the electronic device 100 is in a folded state and in free space, a return loss curve S11-6 when the electronic device 100 is in a folded state and held in the left hand (HL), and a return loss curve S11-5' when the reference electronic device is in a folded state and in free space, and a return loss curve S11-6' when the electronic device is in a folded state and held in the left hand (HL).

[0227] In some embodiments, as described above, Figure 5 The preset frequency bands supported by the antenna assembly 1 and the second reference antenna assembly 2' may be medium and high frequency bands. Fig.23As shown, in some embodiments, the preset frequency band may be the B3 frequency band (1.71-1.88 GHz) in the mid-high frequency band, and the resonant frequency is approximately located around 1.8 GHz.

[0228] like Fig.26 As shown, at the resonant frequency of the preset frequency band, i.e., 1.8 GHz, the return loss of the electronic device 100 when in the folded state and in free space is approximately -30 dB or lower, and the return loss when in the folded state and held in the left hand (HL) is approximately -17.5 dB. Fig.26 In the embodiment, the return loss of the reference electronic device when it is in the folded state and in free space is approximately -11dB, and the return loss when it is in the folded state and held in the left hand is approximately -8dB.

[0229] It can be seen that for Figure 5 The electronic device 100 with the antenna assembly 1 shown, the return loss of the antenna assembly 1 of the electronic device 100 in the folded state in free space or in the left-hand holding scenario is significantly reduced compared with the return loss of the reference electronic device 100.

[0230] See also Fig. 27 , which is a schematic diagram comparing the antenna efficiency of the electronic device 100 in some embodiments of the present application and a reference electronic device in a folded state. The electronic device 100 may be Fig.23 The electronic device 100 shown includes Figure 5 The electronic device 100 of the antenna assembly 1 shown is a foldable electronic device, and the reference electronic device may include the aforementioned Figure 6 The second reference antenna assembly 2' is shown. The reference electronic device may include the aforementioned Figure 5 When the second reference antenna assembly 2' is shown, the position of the second reference antenna assembly 2' in the reference electronic device can be the same as that of the reference antenna assembly 2' in the reference electronic device. Fig.23 The position of the antenna assembly 1 shown in the electronic device 100 is substantially the same.

[0231] Among them, similarly, Fig.23 The electronic device 100 shown is a foldable electronic device, which can be in a folded state and an unfolded state, and the reference electronic device is also a foldable electronic device. Fig. 27The diagram illustrates the radiation efficiency curve Sr5 of the electronic device 100 in a folded state and in free space, the radiation efficiency curve Sr6 of the electronic device 100 in a folded state and held in the left hand, the total system efficiency curve St5 of the electronic device 100 in a folded state and in free space, and the total system efficiency curve St6 of the electronic device 100 in a folded state and held in the left hand, as well as the radiation efficiency curve Sr5' of the reference electronic device in a folded state and in free space, the radiation efficiency curve Sr6' of the electronic device 100 in a folded state and held in the left hand, the total system efficiency curve St5' of the electronic device 100 in a folded state and in free space, and the total system efficiency curve St6' of the electronic device 100 in a folded state and held in the left hand.

[0232] like Fig. 27 As shown, at the resonant frequency of the preset frequency band, that is, 1.8 GHz, the radiation efficiency of the electronic device 100 in the folded state and in free space is approximately -4.48 dB, the radiation efficiency in the folded state and held in the left hand is approximately -7.24 dB, the total system efficiency in the folded state and in free space is approximately -4.8 dB, and the total system efficiency in the folded state and held in the left hand is approximately -7.32 dB; the radiation efficiency of the reference electronic device in the folded state and in free space is approximately -5.2 dB, the radiation efficiency in the folded state and held in the left hand is approximately -7.3 dB, the total system efficiency in the folded state and in free space is approximately -5.83 dB, and the total system efficiency in the folded state and held in the left hand is approximately -8.65 dB.

[0233] As can be seen from the above, the electronic device 100 includes Figure 5 When the antenna assembly 1 shown is a foldable electronic device, compared with the foldable electronic device also including Figure 6 The reference electronic device of the second reference antenna assembly 2' shown in the figure has a certain improvement in radiation efficiency and system overall efficiency, whether in the free space in the folded state or in the left hand holding state. As mentioned above, the antenna assembly 1 of the electronic device 100 of the present application can disperse the radiation energy to the two radiation branches and reduce the SAR value because it feeds two radiation branches at the same time. Therefore, the electronic device 100 of the present application, in the case of including Figure 5 The antenna assembly 1 shown can also effectively reduce the SAR value while ensuring or even improving the antenna performance.

[0234] See also Fig.28 , is a schematic diagram showing another comparison of return loss between the electronic device 100 in some embodiments of the present application and a reference electronic device in a folded state. The electronic device 100 may be Fig.23 The electronic device 100 shown includes Figure 5The electronic device 100 of the antenna assembly 1 shown is a foldable electronic device, and the reference electronic device may include the aforementioned Figure 6 The second reference antenna assembly 2' is shown. The reference electronic device comprises the aforementioned Figure 6 When the second reference antenna assembly 2' is shown, the position of the second reference antenna assembly 2' in the reference electronic device can be the same as that of the reference antenna assembly 2' in the reference electronic device. Fig.23 The position of the antenna assembly 1 shown in the electronic device 100 is substantially the same.

[0235] in, Fig.23 The electronic device 100 shown is a foldable electronic device, which can be in a folded state and an unfolded state, and the reference electronic device is also a foldable electronic device. Fig.28 The diagram illustrates a return loss curve S11-7 when the electronic device 100 is in a folded state and in free space, a return loss curve S11-8 when the electronic device 100 is in a folded state and held in the right hand (RL), and a return loss curve S11-7' when the reference electronic device is in a folded state and in free space, and a return loss curve S11-8' when the electronic device is in a folded state and held in the right hand (RL).

[0236] In some embodiments, as described above, Figure 5 The preset frequency bands supported by the antenna assembly 1 and the second reference antenna assembly 2' may be medium and high frequency bands. Fig.23 As shown, in some embodiments, the preset frequency band may be the B3 frequency band (1.71-1.88 GHz) in the mid-high frequency band, and the resonant frequency is approximately located around 1.8 GHz.

[0237] like Fig.28 As shown, at the resonant frequency of the preset frequency band, i.e., 1.8 GHz, the return loss of the electronic device 100 when in the folded state and in free space is approximately -35 dB, and the return loss when in the folded state and held in the right hand (RL) is approximately -18.9 dB. Fig.28 In the embodiment, the return loss of the reference electronic device when it is in a folded state and in free space is approximately -9dB, and the return loss when it is in a folded state and held in the right hand is approximately -7B.

[0238] It can be seen that for Figure 5 The electronic device 100 with the antenna assembly 1 shown has a return loss that is significantly reduced when the antenna assembly 1 of the electronic device 100 is in a folded state and in a free space or right-hand holding scenario compared with the return loss of the reference electronic device 100 .

[0239] As can be seen from the above, the electronic device 100 includes Figure 5When the antenna assembly 1 shown is a foldable electronic device, compared with the foldable electronic device also including Figure 6 The reference electronic device of the second reference antenna assembly 2' shown in the figure has a similar return loss whether in the free space in the folded state or in the right-hand holding state. As mentioned above, the antenna assembly 1 of the electronic device 100 of the present application can disperse the radiation energy to the two radiation branches and reduce the SAR value because it feeds two radiation branches at the same time. Therefore, the electronic device 100 of the present application, in the case of including Figure 5 The antenna assembly 1 shown can also effectively reduce the SAR value while ensuring or even improving the antenna performance.

[0240] See also Fig.29 , is another return loss comparison diagram of the electronic device 100 in some embodiments of the present application and a reference electronic device in a folded state. The electronic device 100 may be Fig.23 The electronic device 100 shown includes Figure 5 The electronic device 100 of the antenna assembly 1 shown is a foldable electronic device, and the reference electronic device may include the aforementioned Figure 6 The second reference antenna assembly 2' is shown. The reference electronic device comprises the aforementioned Figure 6 When the second reference antenna assembly 2' is shown, the position of the second reference antenna assembly 2' in the reference electronic device can be the same as that of the reference antenna assembly 2' in the reference electronic device. Fig.23 The position of the antenna assembly 1 shown in the electronic device 100 is substantially the same.

[0241] in, Fig.23 The electronic device 100 shown is a foldable electronic device, which can be in a folded state and an unfolded state, and the reference electronic device is also a foldable electronic device. Fig.29 The return loss curve S11-9 when the electronic device 100 is in a folded state and in free space, the return loss curve S11-10 when the electronic device 100 is in a folded state and in left-hand holding (BHHL), and the return loss curve S11-9' when the reference electronic device is in a folded state and in free space, and the return loss curve S11-10' when the electronic device is in a folded state and in left-hand holding. The left-hand holding refers to the scenario of holding with the left hand and the head close.

[0242] In some embodiments, as described above, Figure 5 The preset frequency bands supported by the antenna assembly 1 and the second reference antenna assembly 2' may be medium and high frequency bands. Fig.23 As shown, in some embodiments, the preset frequency band may be the B3 frequency band (1.71-1.88 GHz) in the mid-high frequency band, and the resonant frequency is approximately located around 1.8 GHz.

[0243] like Fig.29 As shown, at the resonant frequency of the preset frequency band, i.e., 1.8 GHz, the return loss of the electronic device 100 when in the folded state and in free space is approximately -35 dB, and the return loss when in the folded state and held in the left hand is approximately -16.2 dB. Fig.29 In the embodiment, the return loss of the reference electronic device when it is in a folded state and in free space is approximately -13dB, and the return loss when it is in a folded state and held in the left hand of the head is approximately -9dB.

[0244] It can be seen that for Figure 5 The electronic device 100 with the antenna assembly 1 shown, the return loss of the antenna assembly 1 of the electronic device 100 in the folded state in free space or in the left head-hand holding scenario is also significantly reduced compared with the return loss of the reference electronic device 100.

[0245] See also Fig.30 , is another schematic diagram comparing the antenna efficiency of the electronic device 100 in some embodiments of the present application and a reference electronic device in a folded state. The electronic device 100 may be Fig.23 The electronic device 100 shown includes Figure 5 The electronic device 100 of the antenna assembly 1 shown is a foldable electronic device, and the reference electronic device may include the aforementioned Figure 6 The second reference antenna assembly 2' is shown. The reference electronic device may include the aforementioned Figure 5 When the second reference antenna assembly 2' is shown, the position of the second reference antenna assembly 2' in the reference electronic device can be the same as that of the reference antenna assembly 2' in the reference electronic device. Fig.23 The position of the antenna assembly 1 shown in the electronic device 100 is substantially the same.

[0246] Among them, similarly, Fig.23 The electronic device 100 shown is a foldable electronic device, which can be in a folded state and an unfolded state, and the reference electronic device is also a foldable electronic device. Fig.30The diagram illustrates the radiation efficiency curve Sr7 of the electronic device 100 in a folded state and in free space, the radiation efficiency curve Sr8 of the electronic device 100 in a folded state and held by the left hand, the total system efficiency curve St7 of the electronic device 100 in a folded state and in free space, and the total system efficiency curve St8 of the electronic device 100 in a folded state and held by the left hand, as well as the radiation efficiency curve Sr7' of the reference electronic device in a folded state and in free space, the radiation efficiency curve Sr8' of the electronic device 100 in a folded state and held by the left hand, the total system efficiency curve St7' of the electronic device 100 in a folded state and in free space, and the total system efficiency curve St8' of the electronic device 100 in a folded state and held by the left hand.

[0247] like Fig.30 As shown, at the resonant frequency of the preset frequency band, that is, 1.8 GHz, the radiation efficiency of the electronic device 100 in the folded state and in free space is approximately -4.48 dB, the radiation efficiency in the folded state and held by the left hand is approximately -12 dB, the total system efficiency in the folded state and in free space is approximately -4.8 dB, and the total system efficiency in the folded state and held by the left hand is approximately -12.3 dB; the radiation efficiency of the reference electronic device in the folded state and in free space is approximately -5.2 dB, the radiation efficiency in the folded state and held by the left hand is approximately -13.2 dB, the total system efficiency in the folded state and in free space is approximately -5.83 dB, and the total system efficiency in the folded state and held by the left hand is approximately -13.5 dB.

[0248] As can be seen from the above, the electronic device 100 includes Figure 5 When the antenna assembly 1 shown is a foldable electronic device, compared with the foldable electronic device also including Figure 6 The reference electronic device of the second reference antenna assembly 2' shown in the figure has a certain improvement in radiation efficiency and system overall efficiency, whether in the free space in the folded state or in the left head and hand holding state. As mentioned above, the antenna assembly 1 of the electronic device 100 of the present application can disperse the radiation energy to the two radiation branches and reduce the SAR value because it feeds two radiation branches at the same time. Therefore, the electronic device 100 of the present application, in the case of including Figure 5 The antenna assembly 1 shown can also effectively reduce the SAR value while ensuring or even improving the antenna performance.

[0249] See also Fig.31 , is another schematic diagram of return loss comparison between the electronic device 100 in some embodiments of the present application and a reference electronic device in a folded state. The electronic device 100 may be Fig.23 The electronic device 100 shown includes Figure 5The electronic device 100 of the antenna assembly 1 shown is a foldable electronic device, and the reference electronic device may include the aforementioned Figure 6 The second reference antenna assembly 2' is shown. The reference electronic device comprises the aforementioned Figure 6 When the second reference antenna assembly 2' is shown, the position of the second reference antenna assembly 2' in the reference electronic device can be the same as that of the reference antenna assembly 2' in the reference electronic device. Fig.23 The position of the antenna assembly 1 shown in the electronic device 100 is substantially the same.

[0250] in, Fig.23 The electronic device 100 shown is a foldable electronic device, which can be in a folded state and an unfolded state, and the reference electronic device is also a foldable electronic device. Fig.31 The return loss curve S11-11 of the electronic device 100 when it is in a folded state and in free space, the return loss curve S11-12 of the electronic device 100 when it is in a folded state and in right hand holding (BHHR), and the return loss curve S11-11' of the reference electronic device when it is in a folded state and in free space, and the return loss curve S11-12' of the electronic device when it is in a folded state and in right hand holding. Among them, right hand holding refers to the scene of holding with the right hand and the head close.

[0251] In some embodiments, as described above, Figure 5 The preset frequency bands supported by the antenna assembly 1 and the second reference antenna assembly 2' may be medium and high frequency bands. Fig.23 As shown, in some embodiments, the preset frequency band may be the B3 frequency band (1.71-1.88 GHz) in the mid-high frequency band, and the resonant frequency is approximately located around 1.8 GHz.

[0252] like Fig.31 As shown, at the resonant frequency of the preset frequency band, i.e., 1.8 GHz, the return loss of the electronic device 100 when in the folded state and in free space is approximately -35 dB, and the return loss when in the folded state and held in the right hand is approximately -23 dB. Fig.31 In the figure, the resonant frequency of the reference electronic device is actually around 2.08 GHz, with a certain offset. The return loss of the reference electronic device when it is in a folded state and in free space is approximately -29 dB, and the return loss when it is in a folded state and held in the left hand is approximately 26 dB.

[0253] It can be seen that for Figure 5 The electronic device 100 with the antenna assembly 1 shown, the return loss of the antenna assembly 1 of the electronic device 100 in the folded state in free space or in the right head-hand holding scenario is not much different from the return loss of the reference electronic device 100.

[0254] See also Fig.32 , is another schematic diagram comparing the antenna efficiency of the electronic device 100 in some embodiments of the present application and a reference electronic device in a folded state. The electronic device 100 may be Fig.23 The electronic device 100 shown includes Figure 5 The electronic device 100 of the antenna assembly 1 shown is a foldable electronic device, and the reference electronic device may include the aforementioned Figure 6 The second reference antenna assembly 2' is shown. The reference electronic device may include the aforementioned Figure 5 When the second reference antenna assembly 2' is shown, the position of the second reference antenna assembly 2' in the reference electronic device can be the same as that of the reference antenna assembly 2' in the reference electronic device. Fig.23 The position of the antenna assembly 1 shown in the electronic device 100 is substantially the same.

[0255] Among them, similarly, Fig.23 The electronic device 100 shown is a foldable electronic device, which can be in a folded state and an unfolded state, and the reference electronic device is also a foldable electronic device. Fig.32 The diagram illustrates the radiation efficiency curve Sr9 of the electronic device 100 in a folded state and in free space, the radiation efficiency curve Sr10 of the electronic device 100 in a folded state and held by the right hand, the total system efficiency curve St9 of the electronic device 100 in a folded state and in free space, and the total system efficiency curve St10 of the electronic device 100 in a folded state and held by the right hand, as well as the radiation efficiency curve Sr9' of the reference electronic device in a folded state and in free space, the radiation efficiency curve Sr10' of the electronic device 100 in a folded state and held by the right hand, the total system efficiency curve St9' of the electronic device 100 in a folded state and in free space, and the total system efficiency curve St10' of the electronic device 100 in a folded state and held by the right hand.

[0256] like Fig.32 As shown, at the resonant frequency of the preset frequency band, that is, 1.8 GHz, the radiation efficiency of the electronic device 100 in the folded state and in free space is approximately -4.48 dB, the radiation efficiency in the folded state and held by the right head and hand is approximately -11.7 dB, the total system efficiency in the folded state and in free space is approximately -4.8 dB, and the total system efficiency in the folded state and held by the right head and hand is approximately -11.8 dB; the radiation efficiency of the reference electronic device in the folded state and in free space is approximately -5.2 dB, the radiation efficiency in the folded state and held by the right head and hand is approximately -11.9 dB, the total system efficiency in the folded state and in free space is approximately -5.83 dB, and the total system efficiency in the folded state and held by the right head and hand is approximately -12.8 dB.

[0257] As can be seen from the above, the electronic device 100 includes Figure 5 When the antenna assembly 1 shown is a foldable electronic device, compared with the foldable electronic device also including Figure 6 The reference electronic device of the second reference antenna assembly 2' shown in the figure has a certain improvement in radiation efficiency and system overall efficiency, whether in the free space in the folded state or in the right head-hand holding state. As mentioned above, the antenna assembly 1 of the electronic device 100 of the present application can disperse the radiation energy to the two radiation branches and reduce the SAR value because it feeds two radiation branches at the same time. Therefore, the electronic device 100 of the present application, in the case of including Figure 5 The antenna assembly 1 shown can also effectively reduce the SAR value while ensuring or even improving the antenna performance.

[0258] Therefore, it can be seen from the above that the electronic device 100 of the present application includes Figure 5 For the antenna assembly 1 shown and when the preset frequency band is medium and high frequency, the performance is improved whether it is folded, held in the left hand, held in the right hand, or held with the left head hand or the right head hand, and the SAR value can be reduced, reflecting the advantage of dual feeding of the two radiation branches at the same time.

[0259] See also Fig.33 , is another schematic diagram of radiation energy of the electronic device 100 and a reference electronic device in some embodiments of the present application. The electronic device 100 may be Fig.23 The electronic device shown includes Figure 5 The antenna assembly 1 shown is a foldable electronic device, and the reference electronic device may include the aforementioned Figure 6 A second reference antenna assembly 2' is shown.

[0260] in, Fig.33 The figure shows the radiation energy of the electronic device 100 when it is held in the left hand. Fig.33 a and the radiation energy of the reference electronic device when held in the left hand Fig.33 b, where the darker the color, the greater the radiation energy, and the location with high radiation energy is also the SAR hotspot location. Fig.33 As shown, the radiation energy of the second reference antenna component 2' of the reference electronic device is more concentrated and mainly at the position of the radiation branch 11', while the radiation energy of the antenna component 1 of the electronic device 100 of the present application is dispersed in the first radiation branch 11 and the second radiation branch 12, which can effectively reduce the SAR value.

[0261] See also Fig.34 , is another schematic diagram of radiation energy of the electronic device 100 and a reference electronic device in some embodiments of the present application. The electronic device 100 may be Fig.23 The electronic device shown includes Figure 5 The antenna assembly 1 shown is a foldable electronic device, and the reference electronic device may include the aforementioned Figure 6 A second reference antenna assembly 2' is shown.

[0262] in, Fig.34 The figure shows the radiation energy of the electronic device 100 when it is held in the right hand. Fig.34 a and the radiation energy of the reference electronic device when held in the right hand Fig.34 b, where the darker the color, the greater the radiation energy, and the location with high radiation energy is also the SAR hotspot location. Fig.34 As shown, the radiation energy of the second reference antenna component 2' of the reference electronic device is more concentrated and mainly at the position of the radiation branch 11', while the radiation energy of the antenna component 1 of the electronic device 100 of the present application is dispersed in the first radiation branch 11 and the second radiation branch 12, which can effectively reduce the SAR value.

[0263] Among them, since the radiation energy of the antenna assembly 1 is dispersed in the first radiation branch 11 and the second radiation branch 12, the SAR hotspot is more uniform. Figure 6 For the second reference antenna assembly 2 ′, it is found through testing that the SAR value is reduced from the original 1.58 W / kg to 1.2 W / kg, and the SAR value is reduced by 25%.

[0264] See also Fig.35 , is another schematic plan view of the electronic device 100 in some embodiments of the present application. Fig.35 As shown, the electronic device 100 includes the antenna assembly 1. Fig.35 It is also a schematic top view showing the structure of the antenna assembly 1 viewed from the back side of the electronic device 100 , ie, the side away from the display screen.

[0265] in, Fig.35 The electronic device 100 shown specifically includes: Figure 8 The antenna assembly 1 is shown. Fig.35 As shown, the electronic device 100 includes a top end D11, a bottom end D12, and two side ends D13, D14. The radiation branch of the antenna assembly 1 is substantially disposed at the top end D11 of the electronic device 100.

[0266] That is, when the first radiating branch 11 and the second radiating branch 12 included in the antenna component 1 are an integral straight strip-shaped radiating branch divided into two radiating branches by the grounded connection point N1, and the first radiating branch 11 and the second radiating branch 12 roughly form a T-antenna structure, the first radiating branch 11 and the second radiating branch 12 of the antenna component 1 are both arranged at the top D11 of the electronic device 100.

[0267] Obviously, in some embodiments, the first radiation branch 11 and the second radiation branch 12 of the antenna assembly 1 may also be arranged at the bottom end D12 of the electronic device 100, or at one of the two side ends D13, D14 of the electronic device 100.

[0268] Among them, similarly, Fig.35 The electronic device 100 shown may be a tablet electronic device, and the first radiation branch 11 and the second radiation branch 12 of the antenna assembly 1 may be disposed at any end of the electronic device 100. In some embodiments, Fig.35 The electronic device 100 shown may be a foldable electronic device, and the first radiation branch 11 and the second radiation branch 12 of the antenna assembly 1 may be arranged at any suitable end on one of the main parts of the electronic device 100, for example, any end except the end close to the hinge.

[0269] See also Fig.36 , is another return loss comparison diagram of the electronic device 100 in some embodiments of the present application and a reference electronic device. The electronic device 100 may be Fig.35 The electronic device 100 shown includes Figure 8 The electronic device 100 of the antenna assembly 1 shown in the figure may include the aforementioned Fig. 9 The third reference antenna assembly 3' is shown. The reference electronic device comprises the aforementioned Fig. 9 When the third reference antenna assembly 3' is shown, the position of the third reference antenna assembly 3' in the reference electronic device can be the same as Fig.35 The position of the antenna assembly 1 shown in the electronic device 100 is substantially the same.

[0270] in, Fig.36 The return loss curve S11 - 13 of the electronic device 100 when it is in free space and the return loss curve S11 - 13 ′ of the reference electronic device when it is in free space are shown.

[0271] In some embodiments, as described above, Figure 8 The preset frequency bands supported by the antenna assembly 1 and the third reference antenna assembly 3' may be medium and high frequency bands. Fig.36 As shown, in some embodiments, the preset frequency band may be the B3 frequency band (1.71-1.88 GHz) in the mid-high frequency band, and the resonant frequency is approximately located around 1.8 GHz.

[0272] like Fig.36 As shown, at the resonant frequency of the preset frequency band, that is, 1.8 GHz, the return loss of the electronic device 100 when in free space is approximately -25 dB, and the return loss of the reference electronic device when in free space is approximately -10 dB.

[0273] It can be seen that for Figure 8 The electronic device 100 with the antenna assembly 1 shown has a greatly reduced return loss in free space compared with the return loss of the reference electronic device 100, which significantly reduces the loss and improves the antenna performance.

[0274] See also Fig.37 , is another schematic diagram of antenna efficiency comparison between the electronic device 100 in some embodiments of the present application and a reference electronic device. The electronic device 100 may be Fig.35 The electronic device 100 shown includes Figure 8 The electronic device 100 of the antenna assembly 1 shown in the figure may include the aforementioned Fig. 9 The third reference antenna assembly 3' is shown. The reference electronic device comprises the aforementioned Fig. 9 When the third reference antenna assembly 3' is shown, the position of the third reference antenna assembly 3' in the reference electronic device can be the same as Fig.35 The position of the antenna assembly 1 shown in the electronic device 100 is substantially the same.

[0275] in, Fig.37 The radiation efficiency curve Sr11 of the electronic device 100 in free space and the total system efficiency curve St11 in free space, as well as the radiation efficiency curve Sr11' and the total system efficiency curve St11' of the reference electronic device in free space are shown.

[0276] like Fig.37 As shown, at the resonant frequency of the preset frequency band, i.e., 1.8 GHz, the radiation efficiency of the electronic device 100 in free space is approximately -0.3 dB, and the total system efficiency in free space is approximately -0.32 dB, and the radiation efficiency of the reference electronic device in free space is approximately -1.69 dB, and the total system efficiency in free space is approximately 2.28 dB.

[0277] As can be seen from the above, the electronic device 100 includes Figure 8The antenna assembly 1 shown includes Fig. 9 The reference electronic device of the third reference antenna assembly 3' shown in the figure has a certain improvement in radiation efficiency and system overall efficiency in free space. As mentioned above, the antenna assembly 1 of the electronic device 100 of the present application can disperse the radiation energy to the two radiation branches because it feeds two radiation branches at the same time, thereby reducing the SAR value. Therefore, the electronic device 100 of the present application, including Figure 8 The antenna assembly 1 shown can also effectively reduce the SAR value while ensuring or even improving the antenna performance.

[0278] See also Fig.38 , which is another comparison diagram of return loss of the electronic device 100 in some embodiments of the present application and a reference electronic device in free space and left hand holding scenarios respectively. The electronic device 100 may be Fig.35 The electronic device 100 shown includes Figure 8 The electronic device 100 of the antenna assembly 1 shown in the figure may include the aforementioned Fig. 9 The third reference antenna assembly 3' is shown. The reference electronic device comprises the aforementioned Fig. 9 When the third reference antenna assembly 3' is shown, the position of the third reference antenna assembly 3' in the reference electronic device can be the same as Fig.35 The position of the antenna assembly 1 shown in the electronic device 100 is substantially the same.

[0279] in, Fig.38 The return loss curve S11-14 of the electronic device 100 when in free space and the return loss curve S11-15 when held in the left hand are shown, as well as the return loss curve S11-14' of the reference electronic device when in free space and the return loss curve S11-15' when held in the left hand.

[0280] In some embodiments, as described above, Figure 8 The preset frequency bands supported by the antenna assembly 1 and the third reference antenna assembly 3' may be medium and high frequency bands. Fig.38 As shown, in some embodiments, the preset frequency band may be the B3 frequency band (1.71-1.88 GHz) in the mid-high frequency band, and the resonant frequency is approximately located around 1.8 GHz.

[0281] like Fig.38 As shown, at the resonant frequency of the preset frequency band, i.e., 1.8 GHz, the return loss of the electronic device 100 when in free space is approximately -25 dB, and the return loss when held in the left hand is approximately -16 dB. Fig.38As shown in , the return loss of the reference electronic device when in free space is approximately -10dB, and the return loss when held in the left hand is approximately -9dB.

[0282] It can be seen that for Figure 8 The electronic device 100 with the antenna assembly 1 shown has a greatly reduced return loss in free space compared with the return loss of the reference electronic device 100, which significantly reduces the loss and improves the antenna performance.

[0283] See also Fig.39 , is another schematic diagram of antenna efficiency comparison between the electronic device 100 in some embodiments of the present application and a reference electronic device in free space and left hand holding scenarios respectively. The electronic device 100 may be Fig.35 The electronic device 100 shown includes Figure 8 The electronic device 100 of the antenna assembly 1 shown in the figure may include the aforementioned Fig. 9 The third reference antenna assembly 3' is shown. The reference electronic device comprises the aforementioned Fig. 9 When the third reference antenna assembly 3' is shown, the position of the third reference antenna assembly 3' in the reference electronic device can be the same as Fig.35 The position of the antenna assembly 1 shown in the electronic device 100 is substantially the same.

[0284] in, Fig.39 The diagram illustrates the radiation efficiency curve Sr12 of the electronic device 100 in free space, the radiation efficiency curve Sr13 in the left-hand holding scenario, the total system efficiency curve St12 in free space, and the total system efficiency curve St13 in the left-hand holding scenario, as well as the radiation efficiency curve Sr12' in free space, the radiation efficiency curve Sr13' in the left-hand holding scenario, the total system efficiency curve St12' in free space, and the total system efficiency curve St13' in the left-hand holding scenario of the reference electronic device.

[0285] like Fig.39 As shown, at the resonant frequency of the preset frequency band, that is, 1.8 GHz, the radiation efficiency of the electronic device 100 in free space is approximately -0.3dB, the radiation efficiency in the left-hand holding scenario is approximately -2.29dB, the total system efficiency in free space is approximately -0.32dB, and the total system efficiency in the left-hand holding scenario is approximately -2.4dB; the radiation efficiency of the reference electronic device in free space is approximately -1.69dB, the radiation efficiency in the left-hand holding scenario is approximately -3.59dB, the total system efficiency in free space is approximately 2.28dB, and the total system efficiency in the left-hand holding scenario is approximately -6.5dB.

[0286] As can be seen from the above, the electronic device 100 includes Figure 8 The antenna assembly 1 shown includes Fig. 9 The reference electronic device of the third reference antenna assembly 3' shown in the figure has a certain improvement in radiation efficiency and system overall efficiency in free space and in the left-hand holding scenario. As mentioned above, the antenna assembly 1 of the electronic device 100 of the present application can disperse the radiation energy to the two radiation branches because it feeds two radiation branches at the same time, thereby reducing the SAR value. Therefore, the electronic device 100 of the present application, including Figure 8 The antenna assembly 1 shown can also effectively reduce the SAR value while ensuring or even improving the antenna performance.

[0287] See also Fig.40 , is another schematic diagram of radiation energy of the electronic device 100 and a reference electronic device in some embodiments of the present application. The electronic device 100 may be Fig.35 The electronic device 100 shown includes Figure 8 The electronic device 100 of the antenna assembly 1 shown in the figure may include the aforementioned Fig. 9 A third reference antenna assembly 3' is shown.

[0288] in, Fig.40 The figure shows the radiation energy of the electronic device 100 when it is held in the right hand. Fig.40 a and the radiation energy of the reference electronic device when held in the right hand Fig.40 b, where the darker the color, the greater the radiation energy, and the location with high radiation energy is also the SAR hotspot location. Fig.40 As shown, the radiation energy of the third reference antenna component 3' of the reference electronic device is more concentrated and mainly at the position of the radiation branch 11', while the radiation energy of the antenna component 1 of the electronic device 100 of the present application is dispersed in the first radiation branch 11 and the second radiation branch 12. The overall radiation energy is balanced, and the SAR value can be effectively reduced.

[0289] Among them, since the radiation energy of the antenna assembly 1 is dispersed in the first radiation branch 11 and the second radiation branch 12, the SAR hotspot is more uniform. Fig. 9 For the third reference antenna assembly 3 ′ shown, it is found through testing that the SAR value is reduced from the original 2.64 W / kg to 1.65 W / kg, and the SAR value is reduced by 37.8%.

[0290] See also Fig.41 , is yet another schematic plan view of the electronic device 100 in some embodiments of the present application. Fig.41 As shown, the electronic device 100 includes the antenna assembly 1. Fig.41 It is also a schematic top view showing the structure of the antenna assembly 1 viewed from the back side of the electronic device 100 , ie, the side away from the display screen.

[0291] in, Fig.41 The electronic device 100 shown specifically includes: Fig.10 The antenna assembly 1 is shown. Fig.41 As shown, the electronic device 100 includes a top end D11 , a bottom end D12 and two side ends D13 , D14 . The radiation branches of the antenna assembly 1 are substantially arranged at the top corners of the electronic device 100 .

[0292] That is, when the first radiation branch 11 and the second radiation branch 12 of the antenna assembly 1 are straight strips and perpendicular to each other, the first radiation branch 11 and the second radiation branch 12 are connected to form a radiation branch that is bent as a whole, for example Fig.10 When the radiating branch is substantially "L" shaped, the first radiating branch 11 and the second radiating branch 12 of the antenna assembly 1 are arranged at the vertex position of the electronic device 100. For example, Fig.41 As shown, the first radiation branch 11 is disposed at the side end D14 of the electronic device 100 , and the second radiation branch 12 is disposed at the top end D11 of the electronic device 100 , and is approximately disposed at the top corner position of the upper right corner of the electronic device 100 .

[0293] Obviously, in some embodiments, the first radiation branch 11 and the second radiation branch 12 of the antenna assembly 1 can also be respectively set at the side end D14 and the bottom end D12 of the electronic device 100, and are roughly set at the top corner position of the lower right corner of the electronic device 100.

[0294] Among them, similarly, Fig.41 The electronic device 100 shown may be a tablet electronic device, and the first radiation branch 11 and the second radiation branch 12 of the antenna assembly 1 may be disposed at any two adjacent ends of the electronic device 100. In some embodiments, Fig.41 The electronic device 100 shown may be a foldable electronic device, and the first radiation branch 11 and the second radiation branch 12 of the antenna assembly 1 may be arranged at any two suitable and adjacent ends on one of the main bodies of the electronic device 100, for example, any two adjacent ends except those close to the hinge end.

[0295] See also Fig.42, is another return loss comparison diagram of the electronic device 100 in some embodiments of the present application and a reference electronic device. The electronic device 100 may be Fig.41 The electronic device 100 shown includes Fig.10 The electronic device 100 of the antenna assembly 1 shown in the figure may include the aforementioned Figure 6 The second reference antenna assembly 2' is shown. As mentioned above, Fig.10 The antenna assembly 1 shown may be Figure 6 The improvement based on the second reference antenna assembly 2' shown in FIG. Fig. 9 The improvement is based on the third reference antenna assembly 3' shown in the figure. Figure 6 The second reference antenna assembly 2' is shown as an example for comparison.

[0296] in, Fig.42 The return loss curve S11 - 16 of the electronic device 100 when it is in free space and the return loss curve S11 - 16 ′ of the reference electronic device when it is in free space are shown.

[0297] In some embodiments, as described above, Fig.10 The preset frequency bands supported by the antenna assembly 1 and the second reference antenna assembly 2' may be medium and high frequency bands. Fig.42 As shown, in some embodiments, the preset frequency band may be the B3 frequency band (1.71-1.88 GHz) in the mid-high frequency band, and the resonant frequency is approximately located around 1.8 GHz.

[0298] like Fig.42 As shown, at the resonant frequency of the preset frequency band, that is, 1.8 GHz, the return loss of the electronic device 100 when in free space is approximately -25 dB, and the return loss of the reference electronic device when in free space is approximately -10 dB.

[0299] It can be seen that for Fig.10 The electronic device 100 with the antenna assembly 1 shown has a significantly lower return loss in free space than the return loss of the reference electronic device 100, which significantly reduces the loss and improves the antenna performance. It can also be seen here that the antenna assembly 1 of the electronic device 100 of the present application has a higher efficiency because the balanced mode cannot be generated, and the current is more uniformly radiated at this time, which is significantly improved compared to the reference electronic device 100.

[0300] See also Fig.43, is a schematic diagram of another antenna efficiency comparison between the electronic device 100 in some embodiments of the present application and a reference electronic device. The electronic device 100 may be Fig.41 The electronic device 100 shown includes Fig.10 The electronic device 100 of the antenna assembly 1 shown in the figure may include the aforementioned Figure 6 A second reference antenna assembly 2' is shown.

[0301] in, Fig.43 The radiation efficiency curve Sr14 of the electronic device 100 in free space and the total system efficiency curve St14 in free space, as well as the radiation efficiency curve Sr14' and the total system efficiency curve St14' of the reference electronic device in free space are shown.

[0302] like Fig.43 As shown, at the resonant frequency of the preset frequency band, i.e., 1.8 GHz, the radiation efficiency of the electronic device 100 in free space is approximately -1.23 dB, and the total system efficiency in free space is approximately -1.24 dB; the radiation efficiency of the reference electronic device in free space is approximately -2.53 dB, and the total system efficiency in free space is approximately -2.93 dB.

[0303] As can be seen from the above, the electronic device 100 includes Fig.10 The antenna assembly 1 shown includes Figure 6 The reference electronic device of the second reference antenna assembly 2' shown in the figure has a certain improvement in radiation efficiency and system overall efficiency in free space. As mentioned above, the antenna assembly 1 of the electronic device 100 of the present application can disperse the radiation energy to the two radiation branches because it feeds two radiation branches at the same time, thereby reducing the SAR value. Therefore, the electronic device 100 of the present application, including Fig.10 The antenna assembly 1 shown can also effectively reduce the SAR value while ensuring or even improving the antenna performance.

[0304] See also Fig.44 , is another schematic diagram of radiation energy of the electronic device 100 and a reference electronic device in some embodiments of the present application. The electronic device 100 may be Fig.41 The electronic device 100 shown includes Fig.10 The electronic device 100 of the antenna assembly 1 shown in the figure may include the aforementioned Figure 6 A second reference antenna assembly 2' is shown.

[0305] in, Fig.44 The radiation energy of the electronic device 100 is shown in FIG. Fig.44a and the radiation energy of reference electronic equipment Fig.44 b, where the darker the color, the greater the radiation energy, and the location with high radiation energy is also the SAR hotspot location. Fig.40 As shown, the radiation energy of the second reference antenna component 2' of the reference electronic device is more concentrated and mainly at the position of the radiation branch 11' connected to the feed source 13', while the radiation energy of the antenna component 1 of the electronic device 100 of the present application is dispersed in the first radiation branch 11 and the second radiation branch 12. The overall radiation energy is balanced, and the SAR value can be effectively reduced.

[0306] Among them, since the radiation energy of the antenna assembly 1 is dispersed in the first radiation branch 11 and the second radiation branch 12, the SAR hotspot is more uniform. Fig.10 The two radiating branches of the antenna assembly 1 shown are perpendicular to each other, so the user will generally only approach one of the radiating branches, thereby effectively reducing the SAR value. Figure 6 For the second reference antenna assembly 2 ′ shown, it is found through testing that the SAR value is reduced from the original SAR of 1.54 W / kg to 1.41 W / kg, and the SAR value is reduced by 8.4%.

[0307] See also Fig.45 , are other plan views of the electronic device 100 in some embodiments of the present application. Fig.45 As shown, the electronic device 100 includes the antenna assembly 1. Fig.45 It is also a schematic top view showing the structure of the antenna assembly 1 viewed from the back side of the electronic device 100 , ie, the side away from the display screen.

[0308] in, Fig.45 The electronic device 100 shown may specifically include Fig.12 The antenna assembly 1 shown includes a first radiation branch 11, a second radiation branch 12 and two parasitic branches 102. Fig.45 As shown, the electronic device 100 includes a top end D11 , a bottom end D12 and two side ends D13 and D14 . The radiation branches and parasitic branches of the antenna assembly 1 are generally arranged at two adjacent ends of the electronic device 100 .

[0309] For example, Fig.45 As shown, the first radiation branch 11 and one parasitic branch 102 are arranged at the side end D14 of the electronic device 100 , and the second radiation branch 12 and another parasitic branch 102 are arranged at the top end D11 of the electronic device 100 .

[0310] Obviously, in some embodiments, the first radiation branch 11 and one parasitic branch 102 are disposed at the side end D14 of the electronic device 100 , and the second radiation branch 12 and another parasitic branch 102 can be disposed at the bottom end D12 of the electronic device 100 .

[0311] Among them, similarly, Fig.45 The electronic device 100 shown may be a tablet electronic device, and the first radiation branch 11, the second radiation branch 12 and the parasitic branch 102 of the antenna assembly 1 may be arranged at any two adjacent ends of the electronic device 100. In some embodiments, Fig.45 The electronic device 100 shown may be a foldable electronic device, and the first radiation branch 11, the second radiation branch 12 and the parasitic branch 102 of the antenna assembly 1 may be arranged at any two suitable and adjacent ends on one of the main bodies of the electronic device 100, for example, any two adjacent ends except those close to the hinge end.

[0312] As mentioned above, by adding at least one parasitic branch 102, the bandwidth of the antenna component 1 can be effectively widened. For example, the antenna component 1 can originally only work in a certain frequency band, but by adding at least one parasitic branch 102, the parasitic branch 102 can be coupled and excited to resonate in other frequency bands, such as adjacent or similar frequency bands, to widen the bandwidth. For another example, the antenna component 1 can originally only work in the B3 frequency band, but by adding at least one parasitic branch 102, the parasitic branch 102 can be coupled and excited to resonate in the B1 frequency band, the B40 frequency band, and other frequency bands, so as to cover multiple frequency bands.

[0313] See also Fig.46 , which is a schematic diagram comparing the return loss of the electronic device 100 in some embodiments of the present application and a reference electronic device in multiple frequency bands. Fig.45 The electronic device 100 shown includes Fig.46 The electronic device 100 of the antenna assembly 1 shown in the figure may include the aforementioned Figure 6 The second reference antenna assembly 2' is shown. As mentioned above, Fig.10 The antenna assembly 1 shown may be Figure 6 The improvement based on the second reference antenna assembly 2' shown in FIG. Fig. 9 The third reference antenna assembly 3' is improved based on the Fig.11 It can be Fig.10 The antenna assembly 1 shown in FIG. 1 is further provided with a parasitic branch 102, so that the antenna assembly 1 can also be provided with a parasitic branch 102. Figure 6 The second reference antenna assembly 2' is shown based on or Fig. 9 The improvement is based on the third reference antenna assembly 3' shown in the figure. Figure 6 A second reference antenna assembly 2' is shown for comparison.

[0314] in, Fig.46 The return loss curve S11 - 17 when the electronic device 100 is in free space and a plurality of return loss curves S11 - 17 ′ when the reference electronic device is in free space are shown.

[0315] In some embodiments, as described above, Fig.12 The preset frequency bands supported by the antenna assembly 1 and the second reference antenna assembly 2' may be medium and high frequency bands. Fig.46 As shown, in some embodiments, the preset frequency band may be the B3 frequency band (1.71-1.88 GHz) in the mid-high frequency band, and the resonant frequency is approximately located near 1.8 GHz. By adding at least one parasitic branch 102, the parasitic branch 102 can be coupled and excited to resonate in other frequency bands, such as adjacent or similar frequency bands, to broaden the bandwidth, for example, Fig.46 As shown, it can also couple excite the B40 frequency band ((2.3-2.4GHz) and other frequency bands. Among them, the multiple return loss curves S11-17' when the reference electronic device is in free space are the return loss curves corresponding to the various frequency bands in which the second reference antenna component' of the reference electronic device is adjusted by the switch matching element.

[0316] like Fig.46 As shown, at the resonant frequency of the B3 frequency band, i.e., 1.8 GHz, the return loss of the electronic device 100 in free space is approximately -25 dB, and the return loss of the reference electronic device in free space is approximately -10 dB. At the resonant frequency of the B40 frequency band, i.e., 2.35 GHz, the return loss of the electronic device 100 in free space is approximately -24 dB, and the return loss of the reference electronic device in free space is approximately -22 dB. Fig.46 In the figure, other frequency bands are also shown, which can be seen in Fig.46 , I will not elaborate on this here.

[0317] It can be seen that for Fig.12The electronic device 100 with the antenna assembly 1 shown, the return loss of the antenna assembly 1 of the electronic device 100 in multiple frequency bands in free space is greatly reduced compared with the return loss of each frequency band switched to by the reference electronic device 100 through the switch matching element, which significantly reduces the loss and improves the antenna performance. It can also be seen here that the antenna assembly 1 of the electronic device 100 of the present application has higher efficiency because the balanced mode cannot be generated, and the current is more uniform at this time. The efficiency is significantly improved compared to the reference electronic device 100.

[0318] See also Fig.47 , which is a schematic diagram comparing the antenna efficiency of the electronic device 100 in some embodiments of the present application and a reference electronic device in multiple frequency bands. Fig.45 The electronic device 100 shown includes Fig.46 The electronic device 100 of the antenna assembly 1 shown in the figure may include the aforementioned Figure 6 A second reference antenna assembly 2' is shown.

[0319] in, Fig.47 The radiation efficiency curve Sr15 of the electronic device 100 in free space, the total system efficiency curve St15 in free space, and the multiple radiation efficiency curves Sr15' and the multiple total system efficiency curves St15' of the reference electronic device in free space are shown. The multiple radiation efficiency curves Sr15' and the multiple total system efficiency curves St15' of the reference electronic device in free space are the radiation efficiency curves and the multiple total system efficiencies corresponding to each frequency band after the second reference antenna component 'of the reference electronic device is adjusted by the switch matching element. The multiple radiation efficiency curves Sr15' of the reference electronic device in free space include the radiation efficiency curve Sr15-1' corresponding to the B3 frequency band and the radiation efficiency curve Sr15-2' corresponding to the B40 frequency band, and the multiple total system efficiency curves St15' in free space include the total system efficiency curve St15-1' corresponding to the B3 frequency band and the total system efficiency curve St15-2' corresponding to the B40 frequency band.

[0320] like Fig.47As shown, at the resonant frequency of the B3 frequency band, that is, at 1.8 GHz, the radiation efficiency of the electronic device 100 in free space is approximately -1.34 dB, and the total system efficiency in free space is approximately -1.34 dB; from the radiation efficiency curve Sr15-1' and the total system efficiency curve St15-1' corresponding to the B3 frequency band, the radiation efficiency of the reference electronic device in free space is approximately -3 dB, and the total system efficiency in free space is approximately -4 dB. At the resonant frequency of the B40 frequency band, that is, at 2.35 GHz, the radiation efficiency of the electronic device 100 in free space is approximately -1.3 dB, and the total system efficiency in free space is approximately -1.34 dB; from the radiation efficiency curve Sr15-2' and the total system efficiency curve St15-2' corresponding to the B40 frequency band, the radiation efficiency of the reference electronic device in free space is approximately -4.8 dB, and the total system efficiency in free space is approximately -6.5 dB.

[0321] As can be seen from the above, the electronic device 100 includes Fig.12 The antenna assembly 1 shown includes Figure 6 The reference electronic device of the second reference antenna assembly 2' shown in the figure has a certain improvement in radiation efficiency and system overall efficiency in multiple frequency bands in free space. As mentioned above, the antenna assembly 1 of the electronic device 100 of the present application can disperse the radiation energy to the two radiation branches because it feeds two radiation branches at the same time, thereby reducing the SAR value. Therefore, the electronic device 100 of the present application, including Fig.12 The antenna assembly 1 shown can also effectively reduce the SAR value while ensuring or even improving the antenna performance.

[0322] Among them, Fig.17 As shown in the figure, the electronic device 100 further includes a frame B1, and the first radiation branch 11, the second radiation branch 12, etc. are arranged on the frame B1 of the electronic device 100 and are spaced apart by gaps X1.

[0323] In some embodiments, the frame B1 of the electronic device 100 is a metal frame, and the first radiation branch 11 and the second radiation branch 12 are metal frame segments formed by opening the gap X1 in the metal frame of the electronic device 100 .

[0324] In some other embodiments, the border B1 of the electronic device 100 is a non-metallic border, the first radiation branch 11, the second radiation branch 12, etc. are metal segments arranged in the border of the electronic device 100, and the first radiation branch 11 and the second radiation branch 12, etc. are arranged at intervals.

[0325] That is, in other embodiments, the frame B1 of the electronic device 100 may also be a non-metal frame with low conductivity such as plastic, ceramic, etc. The first radiation branch 11, the second radiation branch 12, etc. are metal segments arranged in the frame B1 of the electronic device 100.

[0326] The first radiation branch 11 , the second radiation branch 12 , etc. may be embedded in the frame of the electronic device 100 , or may be arranged on the inner side of the frame of the electronic device 100 .

[0327] Wherein, when the antenna assembly 1 further includes a parasitic branch 102, the parasitic branch 102 may also be arranged on the frame B1 of the electronic device 100 and spaced apart by the gap X1. For example, the frame B1 of the electronic device 100 is a metal frame, and the parasitic branch 102 may be an independent metal frame segment formed by the metal frame of the electronic device 100 by opening the gap X1, or the frame B1 of the electronic device 100 is a non-metal frame, and the parasitic branch 102 is a metal segment arranged in the frame of the electronic device 100.

[0328] In some embodiments, the first radiation branch 11, the second radiation branch 12 and the parasitic branch 102 are in the shape of long strips, and the largest surfaces of the first radiation branch 11, the second radiation branch 12 and the parasitic branch 102 are surfaces parallel to the frame surface of the frame B1, wherein the frame surface of the frame B1 is approximately perpendicular to the plane of the display screen of the electronic device 100.

[0329] like Fig.17 As shown in the figure, the electronic device 100 also includes a mainboard 201, wherein the feed source 13 and the like can be specifically arranged on the mainboard 201. The drawings of the present application are only schematic diagrams, and in some drawings, due to layout problems, the feed source 13 is not located on the mainboard 201. The aforementioned grounding can be electrically connected to the ground on the mainboard 201 to achieve grounding.

[0330] Among them, Fig.17 As shown in the figures, the electronic device 100 also includes a middle frame 202, which is used to support structures such as a display screen, and the middle frame 202 is used as a ground for the entire device. The ground on the mainboard 201 is connected to the middle frame 202 to provide a ground potential.

[0331] The aforementioned grounding may also be achieved by directly connecting to the middle frame 202 .

[0332] The electronic device 100 may also include an antenna bracket, which is made of insulating material. The first radiation branch 11, the second radiation branch 12 and the parasitic branch 102 may also be fixed on the corresponding antenna bracket and fixed to the corresponding position of the electronic device near the frame B1 through the antenna bracket.

[0333] In some embodiments, the first radiation branch 11, the second radiation branch 12 and the parasitic branch 102 can be a FPC (flexible printed circuit) fixedly arranged on the antenna bracket or a LDS (Laser-Direct-structuring) metal segment formed on the antenna bracket by laser technology, or a PDS metal segment formed on the antenna bracket by PDS (Printing Direct Structure) technology (for example, a metal segment is formed by printing conductive ink, conductive silver paste, etc. on the antenna bracket), and fixed to a corresponding position in the electronic device 100 through the antenna bracket, for example, a corresponding position close to the frame B1.

[0334] The electronic device 100 may be any device including an antenna, such as a mobile phone, a tablet computer, a smart watch, a laptop computer, etc. As mentioned above, the electronic device 100 may be a tablet electronic device or a foldable electronic device.

[0335] Thus, the antenna assembly 1 and the electronic device 100 of the present application, through the above structure, the first radiation branch 11 and the second radiation branch 12 respectively work in the radiation mode under the excitation of the first feed signal and the second feed signal, which can effectively ensure the radiation performance, and by feeding the two radiation branches at the same time, the radiation energy can be dispersed in the two radiation branches, thereby reducing the SAR value. And because the current directions of the first radiation branch 11 and the second radiation branch 12 respectively under the excitation of the first feed signal and the second feed signal meet the conditions required for the radiation mode, and can effectively destroy the conditions required for the balanced mode, and will not work in the balanced mode, that is, only work in the radiation mode, so that it can effectively ensure the radiation performance of the antenna while avoiding the SAR value from exceeding the standard.

[0336] The above description is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application; in the absence of conflict, the embodiments of the present application and the features in the embodiments can be combined with each other. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. An antenna assembly, characterized in that: include: A first radiating branch, comprising a first feeding point; A second radiating branch, comprising a second feeding point; A feed source, used for providing a feed signal; A signal processing unit is connected between the feed source, the first feeding point of the first radiating branch, and the second feeding point of the second radiating branch, and is used to convert the feed signal provided by the feed source into a first feeding signal and a second feeding signal, and output them to the first feeding point and the second feeding point, respectively, wherein the first feeding signal and the second feeding signal have the same frequency, and the first radiating branch and the second radiating branch respectively work in a radiation mode as a whole under the excitation of the first feeding signal and the second feeding signal to support the reception and transmission of electromagnetic wave signals in a preset frequency band.

2. The antenna assembly according to claim 1, characterized in that: The electrical lengths of the first radiation branch and the second radiation branch are both λ / 4, where λ is the wavelength corresponding to the preset frequency band.

3. The antenna assembly according to claim 2, characterized in that: The first radiation branch and the second radiation branch are adjacent to and spaced apart from each other. The first radiation branch includes a first end and a second end opposite to each other, and the second radiation branch includes a third end and a fourth end opposite to each other. The first end of the first radiation branch and the third end of the second radiation branch are open ends and are adjacent to and spaced apart from each other. The first feeding point is disposed at a position of the first radiation branch close to the first end, and the second feeding point is disposed at a position of the second radiation branch close to the third end. The first feeding signal and the second feeding signal have opposite phases to excite the first radiation branch and the second radiation branch to generate currents in the same direction, and the whole operates in the radiation mode.

4. The antenna assembly according to claim 3, characterized in that: The second end of the first radiation branch and the fourth end of the second radiation branch are grounded or open-circuited.

5. The antenna assembly according to claim 4, characterized in that: The first radiation branch and the second radiation branch are bent, and the first radiation branch and the second radiation branch form a semi-annular structure. The direction of the current generated by the first radiation branch and the second radiation branch is counterclockwise or clockwise around the semi-annular structure.

6. The antenna assembly according to claim 5, characterized in that: The first radiating branch includes a first radiating sub-branch and a second radiating sub-branch, the second radiating branch includes a third radiating sub-branch and a fourth radiating sub-branch, the first radiating sub-branch and the second radiating sub-branch are vertically connected, the third radiating sub-branch and the fourth radiating sub-branch are vertically connected, the end of the first radiating sub-branch away from the second radiating sub-branch is the first end, the end of the second radiating sub-branch away from the first radiating sub-branch is the second end, the end of the third radiating sub-branch away from the fourth radiating sub-branch is the third end, and the end of the fourth radiating sub-branch away from the third radiating sub-branch is the fourth end, the first radiating sub-branch is parallel to the third radiating sub-branch and is arranged at intervals, the second radiating sub-branch is parallel to the fourth radiating sub-branch, forming a semi-annular structure.

7. The antenna assembly according to claim 6, characterized in that: The preset frequency band is a low frequency band.

8. The antenna assembly according to claim 4, characterized in that: The first radiating branch is bent, the second radiating branch is straight, the first radiating branch and the second radiating branch form a bent structure as a whole, and the direction of the current generated by the first radiating branch and the second radiating branch is counterclockwise or clockwise around the bent structure.

9. The antenna assembly according to claim 8, characterized in that: The first radiating branch includes a first radiating sub-branch and a second radiating sub-branch, the first radiating sub-branch and the second radiating sub-branch are vertically connected, the end of the first radiating sub-branch away from the second radiating sub-branch is the first end, the end of the second radiating sub-branch away from the first radiating sub-branch is the second end, the first radiating sub-branch is parallel to the second radiating branch, and is adjacent to and spaced apart from the second radiating branch.

10. The antenna assembly according to claim 8, characterized in that: The preset frequency band is medium and high frequency.

11. The antenna assembly according to any one of claims 3 to 10, characterized in that: The signal processing unit includes a power divider and a phase shifter, the power divider includes a first input end, a first output end and a second output end, the first input end is connected to the feed source, the first output end is connected to a first feeding point of the first radiating branch and one of a second feeding point of the second radiating branch, the phase shifter is connected between the other of the first feeding point and the second feeding point and the second output end, the power divider is used to divide the feed signal output by the feed source into two feed signals with the same frequency and phase, and output them through the first output end and the second output end respectively, the phase shifter is used to phase shift one feed signal output by the second output end to obtain an inverted feed signal, so that the first feeding point and the second feeding point respectively receive the first feeding signal and the second feeding signal with the same frequency and opposite phase.

12. The antenna assembly according to claim 2, characterized in that: The first radiation branch and the second radiation branch are connected, and the connection point of the first radiation branch and the second radiation branch is grounded. The first feed signal and the second feed signal have the same phase to stimulate the first radiation branch and the second radiation branch to generate currents in opposite directions, and the whole works in the radiation mode.

13. The antenna assembly according to claim 12, characterized in that: The first radiation branch includes a first end and a second end relative to each other, the second radiation branch includes a third end and a fourth end relative to each other, the first end of the first radiation branch and the third end of the second radiation branch are connected and grounded, and the second end of the first radiation branch and the fourth end of the second radiation branch are open ends.

14. The antenna assembly according to claim 13, characterized in that: The first radiating branch and the second radiating branch are in a straight bar shape and are parallel. The first radiating branch and the second radiating branch are connected to form a radiating branch that is in a straight bar shape as a whole.

15. The antenna assembly according to claim 13, characterized in that: The first radiating branch and the second radiating branch are in a straight strip shape and are perpendicular to each other. The first radiating branch and the second radiating branch are connected to form a radiating branch that is bent as a whole.

16. The antenna assembly according to claim 13, characterized in that: The antenna assembly further includes at least one parasitic branch, which is adjacent to and spaced from the second end of the first radiation branch and / or the fourth end of the second radiation branch.

17. The antenna assembly according to claim 16, characterized in that: The at least one parasitic branch includes one parasitic branch, and the one parasitic branch is adjacent to and spaced from the second end of the first radiation branch or the fourth end of the second radiation branch.

18. The antenna assembly according to claim 16, characterized in that The at least one parasitic branch includes two parasitic branches, and the two parasitic branches are respectively adjacent to the second end of the first radiation branch and the fourth end of the second radiation branch and are spaced apart from each other.

19. The antenna assembly according to any one of claims 12 to 18, characterized in that: The signal processing unit includes a power divider, which includes a first input end, a first output end and a second output end. The first input end is connected to the feed source, and the first output end and the second output end are respectively connected to the first feeding point of the first radiation branch and the second feeding point of the second radiation branch. The power divider is used to divide the feed signal output by the feed source into two feed signals with the same frequency and phase, and output them through the first output end and the second output end respectively, so that the first feeding point and the second feeding point respectively receive the first feeding signal and the second feeding signal with the same frequency and phase.

20. The antenna assembly according to claim 1, wherein: The antenna assembly also includes a matching unit, which is connected between the feed source and the signal processing unit and is used to perform corresponding impedance matching adjustment.

21. An electronic device, characterized in that: The electronic device comprises the antenna assembly according to any one of claims 1-20.

22. The electronic device according to claim 21, characterized in that: The electronic device is a straight-type electronic device, and the first radiation branch and the second radiation branch are arranged at one end or at least two adjacent ends of the electronic device.

23. The electronic device according to claim 21, characterized in that: The electronic device is a foldable electronic device, including a hinge, a first main body portion and a second main body portion. The first main body portion and the second main body portion rotate around the hinge to place the electronic device in a folded state or an unfolded state. The first radiating branch and the second radiating branch are arranged on one of the first main body portion and the second main body portion, and are located at one end or at least two adjacent ends of one of the first main body portion and the second main body portion.

24. The electronic device according to any one of claims 21 to 23, characterized in that: The electronic device includes a frame, and the first radiation branch and the second radiation branch are metal segments arranged on the frame.

25. The electronic device according to claim 24, characterized in that: The frame is a metal frame, and the first radiation branch nodes and the second radiation branch nodes are metal frame segments formed by gaps in the metal frame.

26. The electronic device according to claim 24, characterized in that: The frame is a non-metal frame, and the first radiation branch and the second radiation branch are metal segments arranged in the frame.

27. The electronic device according to any one of claims 21 to 23, characterized in that: The first radiation branch and the second radiation branch are arranged in the electronic device through an antenna bracket.

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