Antenna assembly and electronic equipment

Abstract

The embodiment of the invention provides an antenna assembly. The antenna assembly comprises a first radiation branch knot, a second radiation branch knot and a first feed source. The first radiation branch knot comprises a first feeding point; and the second radiation branch knot and the first radiation branch knot are arranged at an interval. And the first feed source is connected with the first feed point and is used for exciting the first radiation branch knot and coupling and exciting the second radiation branch knot through the first radiation branch knot. The first radiation branch generates a first radiation current under excitation of the first feed source, the second radiation branch generates a second radiation current under coupling excitation of the first feed source, and at least part of the direction of the second radiation current is the same as the direction of the first radiation current. The first radiation branch knot and the second radiation branch knot work together in a first resonance mode so as to support receiving and transmitting of electromagnetic wave signals of a first frequency band. The invention further provides electronic equipment. The radiation performance of the first frequency band can be effectively improved.

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 communication technology, people's communication experience is getting better and better, there are more and more antennas, and more and more antenna frequency bands need to be supported. The increase in antennas may affect the radiation performance of some antennas. Therefore, how to meet the radiation performance of antennas under the current multi-antenna architecture has become a problem that needs to be considered. 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, the antenna assembly comprising a first radiating branch, a second radiating branch and a first feed source. The first radiating branch comprises a first feeding point; the second radiating branch is spaced apart from the first radiating branch. The first feed source is connected to the first feeding point, and is used to excite the first radiating branch, and is used to couple and excite the second radiating branch through the first radiating branch. The first radiating branch generates a first radiation current under the excitation of the first feed source, and the second radiating branch generates a second radiation current under the coupling excitation of the first feed source, at least part of the direction of the second radiation current is the same as the direction of the first radiation current, and the first radiating branch and the second radiating branch work together in a first resonant mode to support the reception and transmission of electromagnetic wave signals in a first frequency band.

[0005] In a 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 and a first feed source. The first radiating branch comprises a first feeding point; the second radiating branch is spaced apart from the first radiating branch. The first feed source is connected to the first feeding point, and is used to excite the first radiating branch, and is used to couple and excite the second radiating branch through the first radiating branch. The first radiating branch generates a first radiation current under the excitation of the first feed source, and the second radiating branch generates a second radiation current under the coupling excitation of the first feed source, and at least part of the direction of the second radiation current is the same as the direction of the first radiation current, and the first radiating branch and the second radiating branch work together in a first resonant mode to support the reception and transmission of electromagnetic wave signals in a first frequency band.

[0006] The electronic device and antenna assembly of the present application, through coupling excitation, generates a radiation current in the same direction as the first radiation current in the second radiation branch, and due to the increase of the current in the same direction, the radiation energy can be effectively increased, and the radiation performance in the first frequency band can be effectively improved. In addition, since the first frequency band enables the two radiation branches to work together in the first resonant mode, compared with the existing single radiation branch, the size of the single radiation branch can be effectively reduced. 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 simple structure and current distribution of the antenna assembly in some embodiments of the present application.

[0010] Figure 3 Schematic diagram of another simple structure and current distribution of an antenna assembly in some embodiments of the present application.

[0011] Figure 4 A schematic diagram of the simple structure and current distribution of a reference antenna assembly.

[0012] Figure 5 This is another simple structural schematic diagram of the antenna assembly in some embodiments of the present application.

[0013] Figure 6 Schematic diagram of the structure of the band-stop filter matching unit in some embodiments of the present application.

[0014] Figure 7 Schematic diagram of another simple structure and current distribution of the antenna assembly in some embodiments of the present application.

[0015] Figure 8 Schematic diagram of a ground matching unit in some embodiments of the present application.

[0016] Fig. 9 This is a structural block diagram of an electronic device in some embodiments of the present application.

[0017] Fig.10 It is a schematic plan view of an electronic device in some embodiments of the present application.

[0018] Fig.11 Another schematic plan view of an electronic device in some embodiments of the present application.

[0019] Fig.12Schematic diagram of a return loss curve of an electronic device in some embodiments of the present application.

[0020] Fig.13 Schematic diagram of the total system efficiency curve of the electronic device in some embodiments of the present application.

[0021] Fig.14 This is a schematic diagram of the upper hemisphere ratio of an electronic device in some embodiments of the present application.

[0022] Fig.15 This is a schematic diagram of the upper hemisphere ratio of a reference electronic device.

[0023] Fig.16 A schematic diagram comparing directional parameters of electronic devices in some embodiments of the present application and reference electronic devices. DETAILED DESCRIPTION

[0024] 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.

[0025] 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 accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than implying or indicating 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 present invention. The term "connection" in this application includes relationships such as direct connection, indirect connection, and electrical connection. 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 in the specification, the objects with the same name referred to by the terms "first", "second", etc. may be the same objects.

[0026] 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 1As shown, the antenna assembly 1 includes a first radiation branch 11, a second radiation branch 12 and a first feed source 13. The first radiation branch 11 includes a first feed point F1, and the second radiation branch 12 is spaced apart from the first radiation branch 11. The first feed source 13 is connected to the first feed point F1, and is used to excite the first radiation branch 11, and is used to couple and excite the second radiation branch 12 through the first radiation branch 11. The first radiation branch 11 generates a first radiation current under the excitation of the first feed source 13, and the second radiation branch 12 generates a second radiation current under the coupling excitation of the first feed source 13, and at least part of the direction of the second radiation current is the same as the direction of the first radiation current, and the first radiation branch 11 and the second radiation branch 12 work together in the first resonant mode to support the reception and transmission of electromagnetic wave signals in the first frequency band.

[0027] In the present application, the first radiation branch 11 generates a first radiation current under the excitation of the first feed source 13, and the second radiation branch 12 generates a second radiation current under the coupling excitation of the first feed source 13, and at least part of the direction of the second radiation current is the same as the direction of the first radiation current, so that the second radiation branch 12 is coupled to excite the second radiation branch 12 to generate a radiation current in the same direction as the first radiation current. Due to the increase in current in the same direction, the radiation energy can be effectively improved, and the radiation performance in the first frequency band can be effectively improved. In addition, since the present application is achieved by two radiation branches 11 and 12 working together in the first resonant mode to support the first frequency band, compared with the existing single radiation branch, the size of the single radiation branch can be effectively reduced.

[0028] In some embodiments, the second radiation branch 12 is adjacent to and spaced from the first radiation branch 11, so that the second radiation branch 12 and the first radiation branch 11 can be coupled to each other. In the present application, A and B are adjacent to and spaced from each other, which means that the distance between A and B is less than a preset distance, such as 1 cm, and they are spaced from each other. Obviously, the distance between the second radiation branch 12 and the first radiation branch 11 can also be any distance that can meet the coupling requirements of the two.

[0029] In some embodiments, the first radiation branch 11 and the second radiation branch 12 work together in a 1 / 4 wavelength resonance mode, and the sum of the electrical lengths of the first radiation branch 11 and the second radiation branch 12 is λ1 / 4, wherein λ1 is the wavelength corresponding to the first frequency band.

[0030] That is, in some embodiments, the first resonance mode is a 1 / 4 wavelength resonance mode, the first radiation branch 11 and the second radiation branch 12 work together in the 1 / 4 wavelength resonance mode, and the sum of the electrical lengths of the first radiation branch 11 and the second radiation branch 12 is λ1 / 4, so that the whole can resonate in the first frequency band and support the reception and transmission of electromagnetic wave signals in the first frequency band, that is, work in the 1 / 4 wavelength resonance mode / resonate in the first frequency band.

[0031] The λ1 being the wavelength corresponding to the first frequency band specifically refers to the λ1 being the wavelength corresponding to the center frequency corresponding to the first frequency band.

[0032] In some embodiments, the antenna assembly 1 may also include other feed sources (e.g., Figure 5 The second feed source shown in the figure), the second radiating branch 12 of the present application is also connected to other feed sources, such as a second feed source, and under the excitation of the second feed source at least supports the reception and transmission of electromagnetic wave signals in a second frequency band, wherein the second frequency band is different from the first frequency band.

[0033] The second frequency band is different from the first frequency band, including the case where the frequency ranges of the first frequency band and the second frequency band do not overlap at all or only overlap partially.

[0034] That is, in one embodiment, the second radiation branch 12 can not only couple with the first radiation branch 11 to support the transmission and reception of electromagnetic wave signals in the first frequency band, that is, as a parasitic branch of the first frequency band, but also can be used as a radiation branch of other frequency bands. Thus, the demand for multiple antenna frequency bands under the current small clearance is met.

[0035] Obviously, in other embodiments, the second radiation branch 12 may also serve only as a parasitic branch of the first radiation branch 11, that is, it may support the transmission and reception of electromagnetic wave signals in the first frequency band together with the first radiation branch 11 only under the coupling excitation of the first feed source 13, without being connected to other feed sources.

[0036] Please also read Figure 2 , is a schematic diagram of the simple structure and current distribution of the antenna assembly 1 in some embodiments of the present application. Figure 1 and Figure 2As shown, the first radiation branch 11 includes a first open-circuit end P1 and a first ground end G1 opposite to each other, the second radiation branch 12 includes a second open-circuit end P2 and a second ground end G2 opposite to each other, the first open-circuit end P1 of the first radiation branch 11 and the second open-circuit end P2 of the second radiation branch 12 are adjacent to and spaced apart from each other, the first feeding point F1 is disposed between the first open-circuit end P1 and the first ground end G1 of the first radiation branch 11, and at least a portion of the second radiation branch 12 extends in the same direction as the first radiation branch 11. The first radiation branch 11 generates the first radiation current i1 from the first ground end G1 to the first open-circuit end P1 under the excitation of the first feed source 13, and the second radiation branch 12 generates the second radiation current i2 from the second open-circuit end P2 to the second ground end G2 under the coupling excitation of the first feed source 13.

[0037] That is, in some embodiments, the second radiation branch 12 is adjacent to and spaced from the first radiation branch 11, specifically, the first open-circuit end P1 of the first radiation branch 11 and the second open-circuit end P2 of the second radiation branch 12 are adjacent to and spaced from each other. In particular, since the first open-circuit end P1 of the first radiation branch 11 and the second open-circuit end P2 of the second radiation branch 12 are adjacent to and spaced from each other, and the first ground end G1 of the first radiation branch 11 and the second ground end G2 of the second radiation branch 12 are relatively far away, at least part of the second radiation branch 12 has the same extension direction as the first radiation branch 11, and therefore, the direction from the first ground end G1 of the first radiation branch 11 to the first open-circuit end P1 is substantially the same as the direction from the second open-circuit end P2 of the second radiation branch 12 to the second ground end G2. Thus, when the first radiation branch 11 generates the first radiation current i1 from the first ground terminal G1 to the first open-circuit terminal P1 under the excitation of the first feed source 13, and the second radiation branch 12 generates the second radiation current i2 from the second open-circuit terminal P2 to the second ground terminal G2 under the coupling excitation of the first feed source 13, at least part of the directions of the first radiation current i1 and the second radiation current i2 are substantially the same. Thus, under the excitation and coupling excitation of the first feed source 13, the second radiation current i2 with at least part of the same direction as the first radiation current i1 can be generated in the second radiation branch 12, and the radiation performance in the first frequency band can be effectively improved.

[0038] Among them, Figure 1 and Figure 2As shown, the first radiation branch 11 is a straight bar, and the second radiation branch 12 includes a first sub-branch 121 and a second sub-branch 122. The first sub-branch 121 and the second sub-branch 122 are both straight bars and vertically connected. The first sub-branch 121 and the first radiation branch 11 are adjacent, and the first sub-branch 121 is parallel to the first radiation branch 11 and is arranged at intervals along the length direction of the first sub-branch 121 and the first radiation branch 11. The direction of the current portion of the second radiation current i2 flowing through the first sub-branch 121 is the same as the direction of the first radiation current i1.

[0039] That is, in some embodiments, the second radiating branch 12 is bent, that is, roughly "L"-shaped, the first sub-branch 121 of the second radiating branch 12 is adjacent to the first radiating branch 11, and the first sub-branch 121 has the same extension direction as the first radiating branch 11, and is arranged at intervals along the extension direction of the first sub-branch 121 and the first radiating branch 11, the end of the first sub-branch 121 away from the second sub-branch 122 is the aforementioned second open-circuit end P2, and the end of the second sub-branch 122 away from the first sub-branch 121 is the aforementioned second ground end G2. Thus, when the first radiation branch 11 generates the first radiation current i1 from the first ground terminal G1 to the first open-circuit terminal P1 under the excitation of the first feed source 13, and the second radiation branch 12 generates the second radiation current i2 from the second open-circuit terminal P2 to the second ground terminal G2 under the coupling excitation of the first feed source 13, the direction of the partial current of the second radiation current i2 located in the second sub-branch 122 is from the end of the first sub-branch 121 away from the second sub-branch 122 to the end of the first sub-branch 121 connected to the second sub-branch 122, thereby, the direction of the partial current of the second radiation current i2 located in the second sub-branch 122 is the same as the direction of the first radiation current.

[0040] Therefore, in some embodiments, the direction of at least part of the second radiation current i2 flowing through the first sub-branch 121 is the same as the direction of the first radiation current, and the radiation current in the direction of the first radiation current can be increased, thereby improving the radiation performance of the electromagnetic wave signal in the first frequency band.

[0041] In the present application, the extension direction of the first sub-branch 121 and the first radiating branch 11 is the length direction of the first sub-branch 121 and the first radiating branch 11, that is, the extension direction of the longest side of the first sub-branch 121 and the first radiating branch 11.

[0042] In some embodiments, the second radiating branch 12 includes a first sub-branch 121 and a second sub-branch 122. When the first sub-branch 121 and the second sub-branch 122 are both straight bars and vertically connected, the first sub-branch 121 and the second sub-branch 122 can be integrally formed, that is, the second radiating branch 12 can be a bent long strip, or the first sub-branch 121 and the second sub-branch 122 can also be two branches fixed together by welding or other means to form the second radiating branch 12.

[0043] In the present application, the vertical connection between the first sub-branch 121 and the second sub-branch 122 is not a connection at 90° in a strict sense, but a roughly vertical connection.

[0044] Among them, in the present application, the extension directions of A and B are the same, which is not the same in a strict sense, but can be approximately the same. For example, the angle between the extension directions of A and B can be considered the same within a preset angle range (for example, -15° to 15°).

[0045] See also Figure 3 , is another simple structure and current distribution diagram of the antenna assembly 1 in some embodiments of the present application. Figure 3 As shown, in some embodiments, the first radiation branch 11 and the second radiation branch 12 are both straight strips, and the first radiation branch 11 is parallel to the second radiation branch 12 and is arranged at intervals along the length direction of the first radiation branch 11 and the second radiation branch 12, and the direction of the second radiation current i2 is the same as the direction of the first radiation current i1.

[0046] That is, in some embodiments, the first radiation branch 11 and the second radiation branch 12 are both straight strips, and the first radiation branch 11 and the second radiation branch 12 have the same extension direction, and are arranged at intervals along the extension direction of the first radiation branch 11 and the second radiation branch 12, so the direction of the second radiation current i2 is exactly the same as the direction of the first radiation current i1. Thus, by having all the second radiation currents i2 distributed on the second radiation branch 12 have the same direction as the first radiation current i1, the radiation performance of the first frequency band can be greatly improved.

[0047] The extension direction of the first radiation branch 11 and the second radiation branch 12 is the length direction of the first radiation branch 11 and the second radiation branch 12 , that is, the extension direction of the longest side of the first radiation branch 11 and the second radiation branch 12 .

[0048] in, Figure 3 The structure of the antenna assembly 1 shown is similar to Figure 1 and Figure 2The difference in the structure of the antenna assembly 1 shown is that the second radiation branch 12 is in the shape of a long strip, and the other structures are the same. For example, the second radiation branch 12 also includes a second open-circuit end P2 and a second ground end G2 opposite to each other, and the second open-circuit end P2 is adjacent to and spaced from the first open-circuit end P1 of the first radiation branch 11. For more specific structures, see the aforementioned Figure 1 and Figure 2 Related content.

[0049] See also Figure 4 , is a schematic diagram of a simple structure and current distribution of a reference antenna assembly 1'. Figure 4 As shown, the reference antenna assembly 1' includes a radiating branch 11' and a feed source 13', the radiating branch 11' includes an open end P1' and a ground end G1', and includes a feeding point F1' located between the open end P1' and the ground end G1', the feed source 13' is connected to the feeding point F1', and the radiating branch 11' supports the transmission and reception of electromagnetic wave signals in the first frequency band under the excitation of the feed source 13'.

[0050] Among them, Figure 4 As shown, the radiation branch 11' of the reference antenna assembly 1' is bent, and the radiation branch 11' includes two vertically connected sub-branches 111' and 112', thereby reducing the occupied space. Figure 4 As shown, since the radiation current i1' on the radiation branch 11' of the reference antenna component 1' is distributed on the two sub-branches 111' and 112', and since the two sub-branches 111' and 112' extend in different directions, only the direction of the radiation current on one of the sub-branches is the effective current direction, resulting in the radiation performance being limited.

[0051] Obviously, in the present application, the second radiation branch 12 is coupled to generate a radiation current in the same direction as the first radiation current. Since the current in the same direction increases, the radiation energy can be effectively increased, and the radiation performance in the first frequency band can be effectively improved. In addition, since the first frequency band enables the two radiation branches 11 to work together in the first resonant mode, compared with Figure 4 The implementation method of the single radiation branch shown can also effectively reduce the size of the single radiation branch.

[0052] See also Figure 5 , is another simple structural diagram of the antenna assembly 1 in some embodiments of the present application. In some embodiments, Figure 5As shown, the second radiating branch 12 also includes a second feeding point F2, and the antenna assembly 1 also includes a second feed source 14, which is connected to the second feeding point F2. The second radiating branch 12 operates in the second resonant mode under the excitation of the second feed source 14, and supports the reception and transmission of electromagnetic wave signals in the second frequency band. Thus, the second radiating branch 12 itself can support the reception and transmission of electromagnetic wave signals in the second frequency band. As mentioned above, the second frequency band is different from the first frequency band, so that the antenna assembly 1 can support more frequency bands to meet the requirements of multiple antenna frequency bands.

[0053] The aforementioned other feed sources include the second feed source 14, and the aforementioned other frequency bands include the second frequency band. As mentioned above, the second frequency band is different from the first frequency band, including the case where the frequency ranges corresponding to the first frequency band and the second frequency band do not overlap at all or only overlap partially.

[0054] Among them, Figure 5 As shown, the antenna assembly 1 also includes a band-stop filter matching unit M1, the second feed source 14 is connected to the second feeding point F2 through the band-stop filter matching unit M1, the band-stop filter matching unit M1 is used to filter out the electromagnetic wave signals in the first frequency band and allow the electromagnetic wave signals outside the first frequency band to pass through, and the band-stop filter matching unit M1 is used to make the second radiation current mainly distributed in the second radiation branch 12.

[0055] That is, in some embodiments, when the second radiation branch 12 is also connected to other feed sources such as the second feed source 14, and the excitation of the second feed source 14 supports the transmission and reception of electromagnetic wave signals of other frequency bands such as the second frequency band, a band-stop filter matching unit M1 is also connected between the second feed source 14 and other feed sources and the second feeding point F2, and the band-stop filter matching unit M1 is used to filter out the electromagnetic wave signals of the first frequency band and allow the electromagnetic wave signals outside the first frequency band to pass through, thereby effectively avoiding interference between the first frequency band and the second frequency band. In addition, since the band-stop filter matching unit M1 is used to filter out the electromagnetic wave signals of the first frequency band, that is, to prevent the electromagnetic wave signals of the first frequency band from passing through, the band-stop filter matching unit M1 makes it impossible for the second radiation current corresponding to the electromagnetic wave signals of the first frequency band to flow to the second feed source 14 through the second feeding point F2, but is mainly distributed on the second radiation branch 12. Thus, the second radiation current coupled and excited on the second radiation branch 12 can be concentrated on the second radiation branch 12, and the part of the second radiation current that is in the same direction as the first radiation current will not be dispersed, thereby effectively ensuring the radiation energy of the first frequency band and improving the radiation performance of the first frequency band.

[0056] In some embodiments, the first feed source 13 outputs a first feed signal to the first feed point F1 of the first radiation branch 11 to stimulate the first radiation branch 11 to generate the first radiation current. The first feed signal is an AC signal, and the frequency is the first frequency corresponding to the first frequency band. For example, the frequency of the first feed signal is the center frequency of the first frequency band. Thus, after the first feed signal is fed into the first radiation branch 11 through the first feed point F1 of the first radiation branch 11, the first radiation current having the first frequency is formed, and the frequency of the second radiation current generated by coupling and exciting the second radiation branch 12 is also the first frequency. The electromagnetic wave signal of the first frequency band is actually the radiation signal excited by the first radiation current and the second radiation current from the first radiation branch 11 and the second radiation branch 12 respectively, and can also be regarded as the radiation signal excited by the first feed signal fed into the first radiation branch 11 and the coupling fed into the second radiation branch 12. Therefore, the band-stop filter matching unit M1 is used to filter out the electromagnetic wave signal in the first frequency band, that is, to prevent the electromagnetic wave signal in the first frequency band from passing through, and actually prevents the second radiation current from passing through, so that the second radiation current can only be mainly distributed in the second radiation branch 12.

[0057] Among them, in the present application, the first radiation current and the second radiation current are actually the same current with the same frequency, but are respectively distributed in the first radiation branch 11 and the second radiation branch 12. For the convenience of distinction, the present application names them as the first radiation current and the second radiation current.

[0058] In some embodiments, the second feed source 14 outputs a second feed signal to the second radiation branch 12 to excite the second radiation branch 12 to work / resonate in a second frequency band, and the electromagnetic wave signal in the second frequency band can be regarded as a radiation signal excited out after the second feed signal is fed into the second radiation branch 12. Therefore, in some embodiments, the band-stop filter matching unit M1 allows electromagnetic wave signals outside the first frequency band to pass through, which may mean that the band-stop filter matching unit M1 allows the second feed signal output by the second feed source 14 to pass through.

[0059] Thus, in some embodiments of the present application, when the second radiation branch 12 is also connected to other feed sources such as the second feed source 14, and the excitation of the second feed source 14 supports the reception and transmission of electromagnetic wave signals in other frequency bands such as the second frequency band, a band-stop filter matching unit M1 is also connected between the second feed source 14 and other feed sources and the second feeding point F2, and the band-stop filter matching unit M1 is used to filter out the electromagnetic wave signals in the first frequency band and allow electromagnetic wave signals outside the first frequency band to pass through, thereby effectively avoiding interference between the first frequency band and the second frequency band, and ensuring that the second radiation current is concentrated on the second radiation branch 12, thereby effectively ensuring the radiation energy of the first frequency band and improving the radiation performance of the first frequency band.

[0060] In some embodiments, the band-stop filter matching unit M1 may include a plurality of capacitors and / or inductors, and the structures and capacitance values ​​and / or inductance values ​​of the plurality of capacitors and / or inductors are designed to prevent signals in the first frequency band from passing through while allowing signals in other frequency bands to pass through.

[0061] In some embodiments, the electrical length of the second radiation branch 12 is λ2 / 4, where λ2 is the wavelength corresponding to the second frequency band. Thus, the second radiation branch 12 itself can resonate in the second frequency band and support the transmission and reception of electromagnetic wave signals in the second frequency band.

[0062] Among them, the second feeding point F2 is located between the second open-circuit end P2 and the second ground end G2, and the second radiating branch 12 forms an inverted F antenna (IFA), wherein the second resonant mode can be an IFA mode, and the second radiating branch 12 itself can also operate in the IFA mode, and support the transmission and reception of electromagnetic wave signals in the second frequency band under the excitation of the second feed source 14.

[0063] See also Figure 6 , is a schematic diagram of the structure of the band-stop filter matching unit M1 in some embodiments of the present application. Figure 6 As shown, in some embodiments, the band-stop filter matching unit M1 includes a first capacitor C1, a second capacitor C2 and a first inductor L1, the first capacitor C1 and the first inductor are connected in parallel between the second feed source 14 and the second feeding point F2, the second capacitor C2 is connected between the second feed source 14 and the ground, and the second capacitor C2 is equivalent to being further connected in parallel with the first capacitor C1 and the first inductor L1 connected in parallel.

[0064] Thus, after the LC filter structure is formed by connecting the first capacitor C1 and the first inductor in parallel, and then connected in parallel with the second capacitor C2, a band-stop filter is formed that filters out the electromagnetic wave signals in the first frequency band and allows electromagnetic wave signals outside the first frequency band to pass.

[0065] In the present application, connected to the first feed source 13 or the second feed source 14 specifically refers to a feed output terminal connected to the first feed source 13 or the second feed source 14 for outputting a corresponding feed signal.

[0066] The band-stop filter matching unit M1 may further include any other structure capable of preventing the signal of the first frequency band from passing through and allowing the signals of other frequency bands to pass through.

[0067] The values ​​of the first capacitor C1, the second capacitor C2 and the first inductor L1 can be determined in advance through simulation tests. For example, Figure 6 In the band-stop filter matching unit M1 shown, the values ​​of the first capacitor C1, the second capacitor C2 and the first inductor L1 are obtained by determining the values ​​required by the first capacitor C1, the second capacitor C2 and the first inductor L1 when blocking the signal of the first frequency band from passing through.

[0068] Among them, in the present application, the electrical length of the first radiation branch 11 and the electrical length of the second radiation branch 12 may be the electrical length of the first radiation branch 11 itself and the electrical length of the second radiation branch 12 itself, respectively, for example, they may be approximately equal to the length of the first radiation branch 11 and the length of the second radiation branch 12, respectively. In some embodiments, when the first radiation branch 11 and / or the second radiation branch 12 are also connected to a matching unit, and the matching unit is also used to achieve matching adjustment, the electrical length of the first radiation branch 11 and / or the second radiation branch 12 may also be an equivalent electrical length under the cooperation of the connected matching unit. For example, the band-stop filter matching unit M1 may also be used to achieve matching adjustment, and the electrical length of the second radiation branch 12 is λ2 / 4, which may refer to the equivalent electrical length of the second radiation branch 12 under the cooperation of the band-stop filter matching unit M1 is λ2 / 4.

[0069] The lengths of the first radiating branches 11 and the second radiating branches 12 are the dimensions of the longest sides of the first radiating branches 11 and the second radiating branches 12. When the first radiating branches 11 and the second radiating branches 12 are both straight strips, the lengths of the first radiating branches 11 and the second radiating branches 12 are the dimensions corresponding to the longest straight side. In some embodiments, when the second radiating branches 12 are bent, the lengths of the second radiating branches 12 are the dimensions corresponding to the longest side of the bent extension.

[0070] See also Figure 7 , is another simple structure and current distribution diagram of the antenna component 1 in some embodiments of the present application.

[0071] In some embodiments, the second feed source 14 is also used to couple and excite the first radiating branch 11 through the second radiating branch 12, and the first branch portion Z1 between the first feeding point F1 of the first radiating branch 11 and the first open end P1 and the second branch portion Z2 between the second feeding point F2 of the second radiating branch 12 and the second open end P2 operate in the first resonant mode to support the transmission and reception of electromagnetic wave signals in the third frequency band.

[0072] That is, in some embodiments, the second branch portion Z2 of the second radiation branch 12 can also work together with the first branch portion Z1 of the first radiation branch 11 in the first resonance mode under the excitation of the second feed source 14 to support the reception and transmission of electromagnetic wave signals in the third frequency band. The second feed source 14 can excite the second branch portion Z2 of the second radiation branch 12, and excite the first branch portion Z1 of the first radiation branch 11 through the coupling of the second radiation branch 12, so that the second branch portion Z2 of the second radiation branch 12 and the first branch portion Z1 of the first radiation branch 11 work together in the first resonance mode to support the reception and transmission of electromagnetic wave signals in the third frequency band, that is, work / resonate in the third frequency band.

[0073] The third frequency band is different from both the first frequency band and the second frequency band, that is, the frequency range corresponding to the third frequency band does not overlap at all or only partially overlaps with the frequency range corresponding to the first frequency band and the second frequency band.

[0074] In some embodiments, the sum of the electrical lengths of the first branch portion Z1 and the second branch portion Z2 is λ3 / 4, wherein λ3 is a wavelength corresponding to the third frequency band.

[0075] That is, in some embodiments, the first resonance mode is a 1 / 4 wavelength resonance mode, the first branch portion Z1 and the second branch portion Z2 work together in the 1 / 4 wavelength resonance mode, and the sum of the electrical lengths of the first branch portion Z1 and the second branch portion Z2 is λ3 / 4, so that the entirety can resonate in the third frequency band and support the reception and transmission of electromagnetic wave signals in the third frequency band.

[0076] Therefore, in the present application, the first branch part Z1 and the second branch part Z2 work together in the 1 / 4 wavelength resonance mode, and the antenna component 1 can also support the reception and transmission of electromagnetic wave signals in the third frequency band through two radiating branches, further increasing the antenna frequency band within the current limited space, and further meeting the requirements of multiple antenna frequency bands without increasing the antenna structure.

[0077] In some embodiments, the ground matching unit M2 is used for matching adjustment so that the first branch portion Z1 and the second branch portion Z2 work better in the 1 / 4 wavelength resonance mode. The electrical length of the first branch portion Z1 may be the equivalent electrical length of the first branch portion Z1 under the cooperation of the ground matching unit M2, and the sum of the electrical lengths of the first branch portion Z1 and the second branch portion Z2 is λ3 / 4, which may mean that the sum of the electrical length of the first branch portion Z1 equivalent to the electrical length of the second branch portion Z2 under the cooperation of the ground matching unit M2 is λ3 / 4.

[0078] In some embodiments, Figure 7 As shown, the antenna assembly 1 also includes a ground matching unit M2, and the ground matching unit M2 is connected between the first feeding point F1 and the ground. The second feed source 14 excites the second branch part Z2 to generate a third radiation current i3 from the second feeding point F2 to the second open-circuit end P2, and couples to excite the first branch part Z1 to generate a fourth radiation current i4 from the first open-circuit end P1 to the first feeding point F1 and to the ground through the ground matching unit M2, so that the first branch part Z1 and the second branch part Z2 operate in the first resonant mode.

[0079] Among them, Figure 7 As shown, the third radiation current i3 from the second feeding point F2 to the second open-circuit end P2 has substantially the same direction as the fourth radiation current i4 from the first open-circuit end P1 to the first feeding point F1 and through the ground matching unit M2 to the ground. Among them, for two radiating branches arranged at intervals, when the directions of the currents generated by the two radiating branches after being excited are substantially the same, the radiation mode can be effectively excited, that is, the conditions for working in the radiation mode are met at this time. Therefore, in the present application, the first resonance mode in which the first radiating branch 11 and the second radiating branch 12 work together, and the first resonance mode in which the first branch part Z1 and the second branch part Z2 work, can also be referred to as a radiation mode.

[0080] In some embodiments, Figure 7As shown, the antenna assembly 1 further includes a bandpass filter matching unit M3, which is connected between the first feed source 13 and the first feeding point F1, and is used to filter out electromagnetic wave signals other than the electromagnetic wave signals in the first frequency band. That is, the bandpass filter matching unit M3 is used to allow electromagnetic wave signals in the first frequency band to pass through, while preventing electromagnetic wave signals in other frequency bands from passing through, thereby preventing electromagnetic wave signals in other frequency bands from interfering with the electromagnetic wave signals in the first frequency band.

[0081] In some embodiments, the bandpass filter matching unit M3 is also used for matching adjustment. When the antenna assembly 1 further includes a bandpass filter matching unit M3 and the bandpass filter matching unit M3 is also used for matching adjustment, the electrical length of the first radiation branch 11 may be the equivalent electrical length of the first radiation branch 11 in cooperation with the bandpass filter matching unit M3. The aforementioned sum of the electrical lengths of the first radiation branch 11 and the second radiation branch 12 is λ1 / 4, which may also mean that the sum of the electrical lengths of the first radiation branch 11 equivalent to the electrical length of the second radiation branch 12 in cooperation with the bandpass filter matching unit M3 is λ1 / 4.

[0082] The ground matching unit M2 may include a plurality of capacitors and / or inductors to achieve corresponding matching adjustment.

[0083] See also Figure 8 , is a schematic diagram of a ground matching unit M2 in some embodiments of the present application. Figure 8 As shown, the ground matching unit M2 may include an inductor L11, a capacitor C11, an inductor L12 and a capacitor C12, wherein the inductor L11 and the capacitor C11 are connected in parallel, the inductor L12 and the capacitor C12 are connected in parallel, and then the inductor L11 and the capacitor C11 connected in parallel and the inductor L12 and the capacitor C12 connected in parallel are connected in series between the first feeding point F1 and the ground.

[0084] in, Figure 8 This is just an example, and the ground matching unit M2 may also include other structures, such as inductors and capacitors connected in parallel, or inductors and capacitors 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 in parallel, and so on.

[0085] The bandpass filter matching unit M3 may also include a plurality of capacitors and / or inductors, and the structures of the plurality of capacitors and / or inductors, as well as the capacitance value and / or inductance value are designed to allow signals of the first frequency band to pass through while preventing signals of other frequency bands from passing through.

[0086] For example, the structure of the bandpass filter matching unit M3 may be the same as the structure of the aforementioned bandstop filter matching unit M1, except that the capacitance and inductance values ​​are different.

[0087] As mentioned above, the first feed source 13 can be used to output the first feed signal to the first feed point F1 of the first radiation branch 11 to excite the first radiation branch 11 and the second radiation branch 12 to resonate in the first frequency band as a whole, and the second feed source 14 is used to output the second feed signal to the second radiation branch 12 to excite the second radiation branch 12 to resonate in the second frequency band. The second feed source 14 is also used to output the third feed signal to the second radiation branch 12 to excite the second branch part Z2 of the second radiation branch 12 and the first branch part Z1 of the first radiation branch 11 to resonate in the third frequency band as a whole.

[0088] In some embodiments, the second feed source 14 is used to output a second feed signal and a third feed signal, wherein the second feed signal is a feed signal corresponding to the second frequency band, and the third feed signal is a feed signal corresponding to the third frequency band. The second feed signal and the third feed signal output by the second feed source 14 are fed into the second radiation branch 12 through the second feeding point F2. The second feed source 14 can be a feed signal source obtained by mixing the second feed signal and the third feed signal through a combiner (not shown) in a radio frequency front-end circuit (not shown in the figure), so that the second feed signal and the third feed signal can be output simultaneously.

[0089] In some embodiments, the first frequency band may be the GPS L1 frequency band (1575.42 MHz), and the second frequency band and the third frequency band are frequency bands other than the first frequency band. For example, the second frequency band may be the N41 frequency band (2.496-2.69 GHz) with a resonance frequency of approximately 2.6 GHz, and the third frequency band may be the N78 frequency band (3.4-3.6 GHz) with a resonance frequency of approximately 3.5 GHz. Obviously, in other embodiments, the first frequency band, the second frequency band and the third frequency band may also be any other three different frequency bands. For example, the first frequency band may also be other GPS frequency bands, or other satellite communication frequency bands, or other cellular communication system frequency bands.

[0090] See also Fig. 9 , is a structural block diagram of an electronic device in some embodiments of the present application. Fig. 9 As shown, the electronic device 100 may include the antenna assembly 1 in any of the aforementioned embodiments.

[0091] Thus, the electronic device 100 is provided with the antenna assembly 1 in any of the aforementioned embodiments, and generates a radiation current in the same direction as the first radiation current by coupling excitation of the second radiation branch 12. Since the current in the same direction increases, the radiation energy can be effectively increased, and the radiation performance in the first frequency band can be effectively improved. In addition, since the first frequency band enables the two radiation branches 11 to work together in the first resonant mode, compared with the existing single radiation branch, the size of the single radiation branch can be effectively reduced.

[0092] See also Fig.10 , is a schematic plan view of an electronic device 100 in some embodiments of the present application. Fig.10 As shown, the electronic device 100 includes the antenna assembly 1. Fig.10 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, from the side away from the display screen. Figure 1-Figure 3 as well as Figure 5 , Figure 7 The antenna assembly 1 shown in the above figures is also the antenna assembly 1 viewed from the back side of the electronic device 100. Figure 4 The reference antenna assembly 1 ′ shown may also be an antenna assembly viewed from the back side of the electronic device to which it is applied.

[0093] in, Fig.10 The electronic device 100 shown includes Figure 1-Figure 2 The antenna assembly 1 shown is used as an example. Fig.10 As shown, the electronic device 100 includes a top end D11, a bottom end D12, and two side ends D13 and D14. The first radiation branch 11 and the second radiation branch 12 of the antenna assembly 1 are arranged at the top end D11 and / or near the top end D11, and the direction of the first radiation current is substantially parallel to the end face of the top end D11.

[0094] That is, in some embodiments, the first radiation branch 11 and the second radiation branch 12 are arranged at the top D11 and / or close to the top D11, and the direction of the first radiation current in the first radiation branch 11 is substantially parallel to the end face of the top D11, that is, the first radiation branch 11 is arranged at the top D11 and substantially parallel to the end face of the top D11.

[0095] In some embodiments, the first frequency band may be the GPS L1 frequency band. Since GPS communication mainly relies on communication with GPS satellites in the sky, in order to facilitate users to ensure the quality of GPS communication in a normal holding posture, that is, the holding posture with the top D11 facing upward and the bottom D12 facing the ground, the antenna pattern needs to face upward. Therefore, the first radiation branch 11 and the second radiation branch 12 are arranged at the top D11 and / or near the top D11, so that the antenna pattern can be roughly facing upward. When the first radiation branch generates a first radiation current under the excitation of the first feed source, and the second radiation branch generates a second radiation current under the coupling excitation of the first feed source, the first radiation branch and the second radiation branch work together in the first resonance mode to support the reception and transmission of electromagnetic wave signals in the first frequency band, the more the first radiation current is roughly parallel to the end face of the top D11, the higher the upper hemisphere proportion of the antenna pattern will be, and the better the GPS communication quality will be. Therefore, in the present application, the first radiation branch 11 and the second radiation branch 12 of the antenna component 1 are arranged at the top D11 and / or near the top D11, and the direction of the first radiation current is roughly parallel to the end face of the top D11. As mentioned above, at least part of the direction of the second radiation current is the same as the direction of the first radiation current, and it will also be roughly parallel to the end face of the top D11. As mentioned above, the first radiation current and the second radiation current are actually the same current with the same frequency. Therefore, by increasing at least part of the second radiation current to be roughly parallel to the end face of the top D11, the first radiation current roughly parallel to the end face of the top D11 can be effectively improved, thereby effectively improving the upper hemisphere proportion of the antenna radiation pattern.

[0096] Among them, Fig.10 As shown, the first radiating branch 11 is in a straight strip shape, and the second radiating branch 12 is in a bent shape, including a first sub-branch 121 and a second sub-branch 122 connected vertically. Fig.10 The first radiation branch 11 and the first sub-branch 121 are arranged at the top D11, and the second sub-branch 122 is arranged at a position of the side end D13 close to the top D11. Therefore, the direction of the current portion of the second radiation current flowing through the first sub-branch 121 is the same as the direction of the first radiation current, and is substantially parallel to the end face of the top D11, so that the first radiation current substantially parallel to the end face of the top D11 can be effectively improved, and the upper hemisphere proportion of the antenna pattern can be effectively improved.

[0097] Obviously, in some embodiments, when the antenna assembly 1 is Figure 3In the antenna assembly 1 shown in , the first radiation branch 11 and the second radiation branch 12 are both in the shape of straight strips, and the first radiation branch 11 and the second radiation branch 12 are both arranged at the top D11. Therefore, the direction of the second radiation current will be the same as the direction of the first radiation current, and will be roughly parallel to the end face of the top D11, so that the first radiation current roughly parallel to the end face of the top D11 can be further effectively improved, and the upper hemisphere proportion of the antenna pattern can be effectively improved.

[0098] 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.

[0099] See also Fig.11 , is another plan view of the electronic device 100 in some embodiments of the present application. Fig.11 As shown, the electronic device 100 includes Figure 5 The antenna assembly 1 shown. That is, in some embodiments, the second radiation branch 12 also includes a second feeding point F2, and the antenna assembly 1 also includes a second feed source 14, which is connected to the second feeding point F2. The second radiation branch 12 is excited by the second feed source 14 to support the transmission and reception of electromagnetic wave signals in the second frequency band. The antenna assembly 1 also includes a band-stop filter matching unit M1, and the second feed source 14 is connected to the second feeding point F2 through the band-stop filter matching unit M1, and the band-stop filter matching unit M1 is used to filter out the electromagnetic wave signals in the first frequency band and allow the electromagnetic wave signals outside the first frequency band to pass through, and the band-stop filter matching unit M1 is used to make the second radiation current mainly distributed in the second radiation branch 12.

[0100] Among them, Fig.11 As shown, in some embodiments, the first radiating branch 11 is in a straight strip shape, and the second radiating branch 12 is in a bent shape, including a first sub-branch 121 and a second sub-branch 122 that are vertically connected. Fig.10The first radiating branch 11 and the first sub-branch 121 are arranged at the top end D11, and the second sub-branch 122 is arranged at a position of the side end D13 close to the top end D11.

[0101] in, Fig.11 and Fig.10 The difference is that the antenna assembly 1 also includes a second feed source 14 and a band-stop filter matching unit M1, and can also support the transmission and reception of electromagnetic wave signals in the second frequency band. For other specific structures, please refer to the aforementioned Fig.10 And the aforementioned Figure 5 Related content.

[0102] As mentioned above, the electronic device 100 may include the antenna assembly 1 in any of the above embodiments, for example, it may also include Figure 3 as well as Figure 7 The antenna assembly 1 shown in FIG. 1 is not illustrated one by one here.

[0103] See also Fig.12 , is a schematic diagram of a return loss curve of an electronic device 100 in some embodiments of the present application. The electronic device 100 may be Fig.11 The electronic device shown includes Figure 5 An electronic device 100 is shown with an antenna assembly 1 . Fig.12 The electronic device 100 includes Figure 5 The return loss curve diagram is a schematic diagram of a simulation test of the antenna assembly 1 working in the first frequency band. Obviously, the electronic device 100 can be an electronic device 100 including the antenna assembly 1 in any of the above embodiments. Figure 5 The electronic device 100 with the antenna assembly 1 shown is taken as an example for simulation testing.

[0104] in, Fig.12 The return loss curve S11 of the electronic device 100 is 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.

[0105] like Fig.12 As shown, at the resonant frequency of the first frequency band, the return loss of the antenna assembly 1 is approximately -10.5 dB, and the return loss is relatively low.

[0106] Wherein, in some embodiments, Fig.12 As shown, the preset frequency band may be the GPS L1 frequency band, and the resonant frequency is approximately located around 1.58 GHz.

[0107] Obviously, Fig.12This is just an example taking GPS L1 as an example. As mentioned above, the first frequency band can be any frequency band.

[0108] See also Fig.13 , is a schematic diagram of a total system efficiency curve of an electronic device 100 in some embodiments of the present application. The electronic device 100 may also be Fig.11 The electronic device shown includes Figure 5 An electronic device with an antenna assembly 1 is shown. Fig.12 The electronic device 100 includes Figure 5 The shown schematic diagram of a system total efficiency curve obtained by simulation test using the antenna assembly 1 operating in the first frequency band as an example.

[0109] in, Fig.13 The total system efficiency curve St1 of the electronic device 100 is shown. In a certain frequency band, the highest point of the total system efficiency curve, that is, the frequency corresponding to the peak, is the resonant frequency point. The higher the total system efficiency, the higher the antenna efficiency at the resonant frequency. Fig.13 As shown, at the resonant frequency of the first frequency band, the total system efficiency of the antenna assembly 1 is approximately -2.92 dB, and the total system efficiency is relatively high.

[0110] Wherein, in some embodiments, Fig.13 As shown, the preset frequency band may be the GPS L1 frequency band, and the resonant frequency is approximately around 1.58 GHz. Fig.13 This is just an example taking GPS L1 as an example. As mentioned above, the first frequency band can be any frequency band.

[0111] Therefore, from Fig.12 and Fig.13 It can be seen that the antenna assembly 1 included in the electronic device 100 in the present application has a low return loss when working in the first frequency band, a high system total efficiency, and generally good antenna radiation performance. Therefore, it can be seen that the electronic device 100 is provided with the antenna assembly 1 in any of the aforementioned embodiments, and generates a radiation current in the same direction as the first radiation current by coupling excitation of the second radiation branch 12. Due to the increase in the current in the same direction, the radiation energy can be effectively increased, and the radiation performance in the first frequency band can be effectively improved.

[0112] See also Fig.14 , is a schematic diagram of the upper hemisphere ratio of the electronic device 100 in some embodiments of the present application. Among them, the electronic device 100 may also be Fig.11 The electronic device shown includes Figure 5 An electronic device with an antenna assembly 1 is shown. Fig.12 The electronic device 100 includes Figure 5 The shown schematic diagram of the upper hemisphere occupancy ratio is obtained by simulation test using the antenna assembly 1 operating in the first frequency band as an example.

[0113] in, Fig.14 The figure shows the upper hemisphere proportion R1 when the antenna component 1 of the electronic device 100 works in the first frequency band. As can be seen from the figure, the upper hemisphere proportion of the electronic device 100 reaches 0.6, and the antenna radiation direction of the antenna component 1 of the electronic device 100 when working in the first frequency band is mostly directed upwards, so when the first frequency band is the GPSL1 frequency band, etc., the upper hemisphere proportion is high, which can improve the quality of communication with the GPS satellite above and improve the radiation performance.

[0114] See also Fig.15 , is a schematic diagram of the upper hemisphere ratio of a reference electronic device. The reference electronic device may include the aforementioned Figure 4 The reference antenna assembly 1' is shown, and the radiation branch 11' of the reference antenna assembly 1' is mainly arranged at the corner position of the top of the reference electronic device. For example, the sub-branch 111' included in the radiation branch 11' is located at the top of the reference electronic device, and the sub-branch 112' included in the radiation branch 11' is located at one side end close to the top. Fig.15 The reference electronic device includes Figure 4 The diagram shown is a schematic diagram of the upper hemisphere ratio obtained by simulation test with reference to the antenna assembly 1' operating in the first frequency band as an example.

[0115] in, Fig.15 The figure shows the upper hemisphere ratio R1' of the reference antenna assembly 1' included in the reference electronic device when working in the first frequency band. As can be seen from the figure, the upper hemisphere ratio of the reference electronic device is only 0.55. As mentioned above, the upper hemisphere ratio of the electronic device 100 of the present application reaches 0.6, which is an increase of 0.05.

[0116] It can be seen that the antenna assembly 1 included in the electronic device 100 of the present application can effectively increase the proportion of the upper hemisphere and improve the radiation performance.

[0117] See also Fig.16 , which is a schematic diagram comparing directional parameters of the electronic device 100 in some embodiments of the present application and a reference electronic device.

[0118] in, Fig.16 The electronic device 100 includes Figure 5 The directional parameter curve Sr1 obtained by simulation test of the antenna assembly 1 shown in the figure working in the first frequency band and the directional parameter curve Sr2 obtained by simulation test of the antenna assembly 1 shown in the figure using the directional parameter curve Sr1 obtained by simulation test of the antenna assembly 1 working in the first frequency band and the directional parameter curve Sr1 obtained by simulation test of the antenna assembly 1 using ... Figure 4The reference antenna assembly 1 ′ shown in the figure is used as an example to obtain a directivity parameter curve Sr1 ′ obtained by simulation test.

[0119] The directional parameter curve is a circular curve, which illustrates the directional parameters in the 360° direction. The directional parameter can be the upper hemisphere ratio, and the upper hemisphere ratio is presented from 0° to 180°. Fig.16 It can be seen that in the range of 120° to 150°, the antenna assembly 1 included in the electronic device 100 of the present application has a significantly improved upper hemisphere ratio compared to the reference antenna assembly 1' of the reference electronic device. In addition, from the perspective of the lower hemisphere ratio presentation from 180° to 360°, the antenna assembly 1 included in the electronic device 100 of the present application is also significantly narrowed compared to the reference antenna assembly 1' of the reference electronic device. Fig.16 It can be seen that the electronic device 100 of the present application can effectively improve the comprehensive performance of the antenna.

[0120] Please return to Fig.10 and Fig.11 , among which, Fig.10 as well as Fig.11 As shown in the figure, the electronic device 100 includes a frame B1, and the first radiation branch node 11 and the second radiation branch node 12 mentioned above can be metal segments arranged on the frame B1. For example, when the first radiation branch node 11 and the second radiation branch node 12 are arranged at the top D11 of the electronic device 100, the first radiation branch node 11 and the second radiation branch node 12 can be arranged at the portion of the frame B1 located at the top D11 of the electronic device 100.

[0121] In some embodiments, the frame B1 may be a metal frame, and the first radiation branch 11 and the second radiation branch 12 may be metal frame segments formed by opening gaps X1 in the metal frame.

[0122] In some embodiments, the frame B1 of the electronic device 100 may be a non-metal frame, and the first radiation branch 11 and the second radiation branch 12 may be metal segments arranged in the frame B1 of the electronic device 100, and are spaced apart from each other with a gap X1 therebetween.

[0123] That is, in some 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 and the second radiation branch 12 are metal segments arranged in the frame B1 of the electronic device 100, for example, metal segments attached to the inner wall of the frame B1 of the electronic device 100.

[0124] That is, in some embodiments of the present application, the first radiation branch 11 and the second radiation branch 12 can be directly formed by the frame B1, or supported and fixed on the frame B1.

[0125] In some embodiments, the first radiation branch 11 and the second radiation branch 12 are fixedly disposed on the antenna bracket formed of an insulating material, and then fixed in the electronic device 100 through the antenna bracket.

[0126] In some embodiments, the antenna bracket may be made of LCP (Liquid Crystal Polymer). In other embodiments, the antenna bracket may be made of other insulating materials, such as plastic, resin, rubber and the like.

[0127] In some embodiments, the first radiating branch 11 and the second radiating branch 12 are fixedly disposed on the antenna bracket formed of insulating material, and then fixed to corresponding positions in the electronic device 100 through the antenna bracket, for example, a position close to the top D11 of the electronic device 100 .

[0128] Among them, Fig.10 and Fig.11 As shown, the electronic device 100 further includes a middle frame 2 , and the middle frame 2 serves as the whole ground of the electronic device 100 and provides a ground potential.

[0129] The first ground terminal G1 and the second ground terminal G2 are specifically connected to the middle frame 2 and grounded.

[0130] like Fig.10 and Fig.11 As shown, the electronic device 100 also includes a mainboard 3 , wherein the aforementioned first feed source 13 , second feed source 14 , band-stop filter matching unit M1 , ground matching unit M2 , band-pass filter matching unit M3 , etc. may be specifically arranged on the mainboard 3 .

[0131] The electronic device 100 also includes a memory, a battery, etc., which are irrelevant to the improvement of the present application and will not be described in detail.

[0132] The electronic device 100 of the present application may be any electronic device having an antenna, such as a mobile phone, a tablet computer, a laptop computer, etc.

[0133] The electronic device 100 and the antenna assembly 1 thereof of the present application generate a first radiation current under the excitation of the first feed source 13 by the first radiation branch 11, and generate a second radiation current under the coupling excitation of the first feed source 13 by the second radiation branch 12, and at least part of the direction of the second radiation current is the same as the direction of the first radiation current, so that the second radiation branch 12 is coupled to excite the second radiation branch 12 to generate a radiation current in the same direction as the first radiation current, and the radiation energy can be effectively improved due to the increase of the current in the same direction, and the radiation performance in the first frequency band can be effectively improved. In addition, since the first frequency band is to make the two radiation branches 11 work together in the first resonant mode, compared with the existing single radiation branch, the size of the single radiation branch can be effectively reduced.

[0134] Among them, each embodiment of the present application has its own focus. In some embodiments, there is no structure that is described in detail. If there is no conflict, reference can be made to the contents of the corresponding structure in other embodiments.

[0135] 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: The antenna assembly comprises: A first radiating branch, comprising a first feeding point; A second radiation branch node is spaced apart from the first radiation branch node; a first feed source connected to the first feed point, used to excite the first radiation branch, and used to excite the second radiation branch through coupling with the first radiation branch; Among them, the first radiation branch generates a first radiation current under the excitation of the first feed source, and the second radiation branch generates a second radiation current under the coupling excitation of the first feed source, at least part of the direction of the second radiation current is the same as the direction of the first radiation current, and the first radiation branch and the second radiation branch work together in a first resonant mode to support the transmission and reception of electromagnetic wave signals in a first frequency band.

2. The antenna assembly according to claim 1, characterized in that: The first radiation branch and the second radiation branch work together in a 1 / 4 wavelength resonance mode, and the sum of the electrical lengths of the first radiation branch and the second radiation branch is λ1 / 4, wherein λ1 is a wavelength corresponding to the first frequency band.

3. The antenna assembly according to claim 1, characterized in that: The antenna assembly also includes a second feed source, and the second radiating branch is also connected to the second feed source, and is used to support the transmission and reception of electromagnetic wave signals in at least a second frequency band under the excitation of the second feed source, and the second frequency band is different from the first frequency band.

4. The antenna assembly according to claim 3, characterized in that: The first radiation branch includes a first open-circuit end and a first grounded end relative to each other, the second radiation branch includes a second open-circuit end and a second grounded end relative to each other, the first open-circuit end of the first radiation branch and the second open-circuit end of the second radiation branch are adjacent to and spaced apart from each other, the first feeding point is arranged between the first open-circuit end and the first grounded end of the first radiation branch, the first radiation branch generates the first radiation current from the first grounded end to the first open-circuit end under the excitation of the first feed source, and the second radiation branch generates the second radiation current from the second open-circuit end to the second grounded end under the coupling excitation of the first feed source.

5. The antenna assembly according to claim 4, characterized in that: The first radiation branch is in the shape of a straight bar, and the second radiation branch includes a first sub-branch and a second sub-branch. The first sub-branch and the second sub-branch are both in the shape of straight bars and are vertically connected. The first sub-branch is adjacent to the first radiation branch, and the first sub-branch has the same extension direction as the first radiation branch and is arranged at intervals along the extension direction of the first sub-branch and the first radiation branch. The direction of the current portion of the second radiation current flowing through the first sub-branch is the same as the direction of the first radiation current.

6. The antenna assembly according to claim 4, characterized in that: The first radiation branch and the second radiation branch are both straight strips, and the first radiation branch and the second radiation branch have the same extension direction and are arranged at intervals along the extension direction of the first radiation branch and the second radiation branch, and the direction of the second radiation current is the same as the direction of the first radiation current.

7. The antenna assembly according to any one of claims 3 to 6, characterized in that: The second radiating branch also includes a second feeding point, and the antenna assembly also includes a band-stop filter matching unit. The second feed source is connected to the second feeding point through the band-stop filter matching unit. The second radiating branch operates in a second resonant mode under the excitation of the second feed source, and supports the reception and transmission of electromagnetic wave signals in a second frequency band. The band-stop filter matching unit is used to filter out the electromagnetic wave signals in the first frequency band and allow electromagnetic wave signals outside the first frequency band to pass through, and the band-stop filter matching unit is used to make the second radiation current mainly distributed in the second radiating branch.

8. The antenna assembly according to claim 7, characterized in that: The band-stop filter matching unit includes a first capacitor, a second capacitor and a first inductor, the first capacitor and the first inductor are connected in parallel between the second feed source and the second feeding point, and the second capacitor is connected between the second feed source and ground.

9. The antenna assembly according to claim 7, characterized in that: The electrical length of the second radiation branch is λ2 / 4, wherein λ2 is the wavelength corresponding to the second frequency band.

10. The antenna assembly according to claim 7, characterized in that: The second feed source is also used to excite the first radiating branch through the coupling of the second radiating branch, so that the first branch part between the first feeding point of the first radiating branch and the first open end and the second branch part between the second feeding point of the second radiating branch and the second open end operate in the first resonant mode to support the transmission and reception of electromagnetic wave signals in the third frequency band.

11. The antenna assembly according to claim 10, characterized in that: The sum of the electrical lengths of the first branch portion and the second branch portion is λ3 / 4, wherein λ3 is a wavelength corresponding to the third frequency band.

12. The antenna assembly according to claim 10, characterized in that: The antenna assembly also includes a ground matching unit, which is connected between the first feeding point and the ground. The second feed source excites the second branch part to generate a third radiation current from the second feeding point to the second open end, and couples to excite the first branch part to generate a fourth radiation current from the first open end to the first feeding point and to the ground through the ground matching unit, so that the first branch part and the second branch part operate in a first resonant mode.

13. The antenna assembly according to claim 10, characterized in that: The antenna assembly also includes a bandpass filter matching unit, which is connected between the first feed source and the first feeding point and is used to filter out electromagnetic wave signals other than electromagnetic wave signals in the first frequency band.

14. The antenna assembly according to any one of claims 1 to 13, characterized in that: The first frequency band is the GPS L1 frequency band.

15. An electronic device, characterized in that: The electronic device comprises the antenna assembly as described in any one of claims 1-14.

16. The electronic device according to claim 15, characterized in that: The electronic device includes a frame, and the first radiation branch, the second radiation branch, and the third radiation branch are metal segments arranged on the frame.

17. The electronic device according to claim 16, 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.

18. The electronic device according to claim 16, characterized in that: The frame is a non-metal frame, and the first radiation branch nodes and the second radiation branch nodes are metal segments arranged in the frame.

19. The electronic device according to claim 15, characterized in that: The first radiation branch and the second radiation branch are arranged in the electronic device through an antenna bracket.

20. The antenna assembly according to any one of claims 15 to 19, characterized in that: The electronic device includes a relative top and bottom, the first radiation branch and the second radiation branch of the antenna assembly are arranged at the top and / or close to the top, and the direction of the first radiation current is parallel to the end face of the top.

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