Antenna assembly and electronic equipment

Abstract

The invention provides an antenna assembly which comprises a radiation branch knot, a first feed source, a second feed source, a first matched filtering unit and a second matched filtering unit. The radiation branch knot comprises a feeding point, the first matched filtering unit is connected between the first feed source and the feeding point, and the second matched filtering unit is connected between the second feed source and the feeding point. The first feed source excites the radiation branch knot through the first matched filtering unit to support a first group of frequency bands, the second feed source excites the radiation branch knot through the second matched filtering unit to support a second group of frequency bands, and the first group of frequency bands are different from the second group of frequency bands. The first matched filtering unit is used for realizing matched adjustment of the first group of frequency bands and filtering of the second group of frequency bands, and the second matched filtering unit is used for realizing matched adjustment of the second group of frequency bands and filtering of the first group of frequency bands. The invention further provides electronic equipment. The size of the radiation branch knot can be effectively reduced, and the radiation performance can be ensured and even 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. However, with the popularity of full-screen and curved screens, the clearance left for antennas is getting smaller and smaller. At present, in order to meet various communication needs, more and more antenna frequency bands and antennas are required. Therefore, how to set up antennas in the current limited space to meet current communication needs 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, the antenna assembly comprising a radiating branch, a first feed source, a first matching filter unit, a second feed source and a second matching filter unit. The radiating branch comprises a feeding point, the first matching filter unit is connected between the first feed source and the feeding point, and the second matching filter unit is connected between the second feed source and the feeding point. The first feed source excites the radiating branch to support the reception and transmission of electromagnetic wave signals of a first group of frequency bands through the first matching filter unit, and the second feed source excites the radiating branch to support the reception and transmission of electromagnetic wave signals of a second group of frequency bands through the second matching filter unit, wherein the first group of frequency bands and the second group of frequency bands each include at least one frequency band, and the first group of frequency bands and the second group of frequency bands include different frequency bands, the first matching filter unit is used to realize matching adjustment of the first group of frequency bands and filtering of the second group of frequency bands, and the second matching filter unit is used to realize matching adjustment of the second group of frequency bands and filtering of the first group of frequency bands.

[0005] In the second aspect, an electronic device is also provided, the electronic device comprising an antenna assembly. The antenna assembly comprises a radiating branch, a first feed source, a first matching filter unit, a second feed source and a second matching filter unit. The radiating branch comprises a feeding point, the first matching filter unit is connected between the first feed source and the feeding point, and the second matching filter unit is connected between the second feed source and the feeding point. The first feed source excites the radiating branch to support the reception and transmission of electromagnetic wave signals of a first group of frequency bands through the first matching filter unit, and the second feed source excites the radiating branch to support the reception and transmission of electromagnetic wave signals of a second group of frequency bands through the second matching filter unit, wherein the first group of frequency bands and the second group of frequency bands each include at least one frequency band, and the first group of frequency bands and the second group of frequency bands include different frequency bands, the first matching filter unit is used to realize matching adjustment of the first group of frequency bands and filtering of the second group of frequency bands, and the second matching filter unit is used to realize matching adjustment of the second group of frequency bands and filtering of the first group of frequency bands.

[0006] The antenna assembly and electronic device of the present application match and adjust the first group of frequency bands and filter the second group of frequency bands through the first matching filter unit, and match and adjust the second group of frequency bands and filter the first group of frequency bands through the second matching filter unit. In the case of a shared feeding point and a radiation branch, it is possible to support multiple different frequency bands and avoid interference between multiple frequency bands, and more frequency bands can be achieved with fewer radiation branches, and the requirements of multiple antenna frequency bands can be met within a limited space. 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 Schematic diagram of the structure of an antenna assembly in one embodiment of the present application.

[0009] Figure 2 A further structural schematic diagram of the antenna assembly in some embodiments of the present application.

[0010] Figure 3 A further detailed structural diagram of the antenna assembly in some embodiments of the present application.

[0011] Figure 4 This is a structural block diagram of an electronic device in some embodiments of the present application.

[0012] Figure 5 It is a schematic plan view of an electronic device in some embodiments of the present application.

[0013] Figure 6 The diagram is a return loss diagram obtained by simulation testing when the electronic device operates in the first group of frequency bands.

[0014] Figure 7 The diagram is a return loss diagram obtained by simulation testing when the electronic device operates in the second frequency band.

[0015] Figure 8 The figure is a schematic diagram of isolation obtained by performing a simulation test when the electronic device operates in the first group of frequency bands and the second group of frequency bands at the same time.

[0016] Fig. 9 A schematic diagram of total system efficiency obtained through simulation testing when the electronic device operates in the first frequency band group and the second frequency band group.

[0017] Fig.10 This is a schematic diagram of the upper hemisphere proportion when the electronic device in some embodiments of the present application operates in the second frequency band. DETAILED DESCRIPTION

[0018] 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.

[0019] In the description of the embodiments of the present invention, it should be understood that the terms "upper", "lower", "thickness", "width", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are 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 the meanings of physical structural connection, electrical connection, direct connection or indirect connection, and can be determined specifically 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 in the specification, the objects with the same name referred to by the terms "first", "second", etc. may be the same objects.

[0020] See also Figure 1 , is a schematic diagram of the structure of the antenna assembly 1 in an embodiment of the present application. Figure 1As shown, the antenna assembly 1 includes a radiating branch 11, a first feed source 12, a first matching filter unit 13, a second feed source 14 and a second matching filter unit 15. The radiating branch 11 includes a feeding point F1, the first matching filter unit 13 is connected between the first feed source 12 and the feeding point F1, and the second matching filter unit 15 is connected between the second feed source 14 and the feeding point F1. The first feed source 12 excites the radiating branch 11 to support the transmission and reception of electromagnetic wave signals of the first group of frequency bands through the first matching filter unit 13, and the second feed source 14 excites the radiating branch 11 to support the transmission and reception of electromagnetic wave signals of the second group of frequency bands through the second matching filter unit 15, wherein the first group of frequency bands and the second group of frequency bands each include at least one frequency band, and the first group of frequency bands and the second group of frequency bands include different frequency bands. The first matching filter unit 13 is used to realize the matching adjustment of the first group of frequency bands and the filtering of the second group of frequency bands, and the second matching filter unit 15 is used to realize the matching adjustment of the second group of frequency bands and the filtering of the first group of frequency bands.

[0021] Thus, the antenna component 1 in the present application matches and adjusts the first group of frequency bands and filters the second group of frequency bands through the first matching filter unit 13, and matches and adjusts the second group of frequency bands and filters the first group of frequency bands through the second matching filter unit 15, and can support multiple different frequency bands and avoid interference between multiple frequency bands under the condition of sharing the feeding point and the radiation branch 11. Compared with the existing method that requires different radiation branches to achieve different frequency bands, the present application can achieve more frequency bands with fewer radiation branches, and can meet the needs of multiple antenna frequency bands within a limited space.

[0022] Among them, in the present application, the first matched filter unit 13 implements matching adjustment of the first group of frequency bands, which means that the radiation branch 11 supports resonance in the first group of frequency bands under the matching adjustment of the first matched filter unit 13, and the first matched filter unit 13 implements filtering of the second group of frequency bands, which means that the first matched filter unit 13 filters the electromagnetic wave signals of the second group of frequency bands and filters out the electromagnetic wave signals of the second group of frequency bands. Among them, the second matched filter unit 15 implements matching adjustment of the second group of frequency bands, which means that the radiation branch 11 supports resonance in the second group of frequency bands under the matching adjustment of the second matched filter unit 15, and the second matched filter unit 15 implements filtering of the first group of frequency bands, which means that the second matched filter unit 15 filters the electromagnetic wave signals of the first group of frequency bands and filters out the electromagnetic wave signals of the first group of frequency bands.

[0023] Therefore, in the present application, since the radiation branch 11 supports resonance in the first group of frequency bands under the matching adjustment of the first matched filter unit 13, the first feed source 12 can excite the radiation branch 11 to support the transmission and reception of electromagnetic wave signals in the first group of frequency bands through the first matched filter unit 13. Since the radiation branch 11 supports resonance in the second group of frequency bands under the matching adjustment of the second matched filter unit 15, the second feed source 14 can also excite the radiation branch 11 to support the transmission and reception of electromagnetic wave signals in the second group of frequency bands through the second matched filter unit 15. Since the first matched filter unit 13 filters the electromagnetic wave signals in the second group of frequency bands, it is possible to avoid the electromagnetic wave signals in the second group of frequency bands interfering with the electromagnetic wave signals in the first group of frequency bands. Similarly, since the second matched filter unit 15 filters the electromagnetic wave signals in the first group of frequency bands, it is possible to avoid the electromagnetic wave signals in the first group of frequency bands interfering with the electromagnetic wave signals in the second group of frequency bands. Therefore, while the radiation branch 11 and the feeding point F1 are shared to support multiple groups of frequency bands, interference between multiple groups of frequency bands can also be avoided.

[0024] In some embodiments, the first group of frequency bands includes frequency bands higher than 3 GHz, and the second group of frequency bands includes frequency bands lower than 3 GHz.

[0025] That is, in some embodiments, the first group of frequency bands includes high frequency bands higher than 3 GHz, and the second group of frequency bands includes low frequency bands, medium frequency bands, etc., lower than 3 GHz. Thus, the present application can achieve high frequency + low frequency, and / or high frequency + medium frequency and other frequency band combinations by sharing the same radiation branch 11 and the same feeding point F1.

[0026] In some embodiments, a frequency band higher than 3 GHz means that the lower limit of the frequency range corresponding to the frequency band is greater than or equal to 3 GHz, and a frequency band lower than 3 GHz means that the upper limit of the frequency range corresponding to the frequency band is less than 3 GHz. In some embodiments, a frequency band higher than 3 GHz may also mean that the resonant frequency or center frequency corresponding to the frequency band is greater than or equal to 3 GHz, and a frequency band lower than 3 GHz may also mean that the upper limit of the resonant frequency or center frequency corresponding to the frequency band is less than 3 GHz.

[0027] In some embodiments, the first group of frequency bands includes a first frequency band and a second frequency band, and the second group of frequency bands includes a third frequency band.

[0028] That is, in some embodiments, the first group of frequency bands may include two frequency bands, namely, the first frequency band and the second frequency band, and the second group of frequency bands may include one frequency band, namely, the third frequency band. Obviously, in other embodiments, the first group of frequency bands may also include multiple frequency bands, such as one frequency band or three frequency bands, and the second group of frequency bands may also include two or more frequency bands.

[0029] The first frequency band and the second frequency band are different.

[0030] In some embodiments, when the first group of frequency bands includes two or more frequency bands, the two or more frequency bands are different, and when the second group of frequency bands includes two or more frequency bands, the two or more frequency bands are also different. Thus, since the first group of frequency bands and the second group of frequency bands include different frequency bands, and the frequency bands in each group of frequency bands are also different, the antenna assembly 1 of the present application can support two or more different frequency bands as a whole.

[0031] In the present application, two frequency bands are different, including the situation that the frequency ranges corresponding to the two frequency bands do not completely overlap, or do not overlap at all.

[0032] In some embodiments, the first frequency band and the second frequency band are respectively an N78 frequency band and a WiFi 5G frequency band, and the third frequency band is one of a satellite communication frequency band, a WiFi 2.4G frequency band, a low frequency band, and a medium frequency band.

[0033] That is, in some embodiments, the first frequency band and the second frequency band are respectively a 5G frequency band, namely the N78 frequency band, and a WiFi frequency band, namely the WiFi 5G frequency band, thereby being able to meet the needs of 5G communication and WiFi communication at the same time. In addition, the third frequency band included in the second group of frequency bands is one of a satellite communication frequency band, a WiFi 2.4G frequency band, and a low-frequency frequency band, and can further meet the communication needs of satellite communication, other frequency bands WiFi communication, and a low-frequency frequency band, thereby being able to meet the needs of multiple communications.

[0034] Obviously, in some embodiments, the first frequency band and the second frequency band included in the first group of frequency bands may also be other frequency bands higher than 3 GHz. For example, the first frequency band and the second frequency band may also be the N79 frequency band and the WiFi 5G frequency band, respectively, or may be the N78 frequency band and the N79 frequency band, respectively, and so on.

[0035] In some embodiments, the satellite communication frequency band includes a satellite positioning frequency band and a satellite call frequency band. For example, in some embodiments, the satellite communication frequency band may include one of a GPS L1 frequency band, a GPS L5 frequency band, and a Beidou satellite communication frequency band.

[0036] That is, in some embodiments, the satellite communication frequency band may include a satellite positioning frequency band and a satellite call frequency band, etc., and may include satellite communication frequency bands of different standards such as a GPS frequency band and a Beidou satellite communication frequency band.

[0037] In some embodiments, the low frequency band may include B5 band, B8 band, B20 band, B28 band and the like, and the medium frequency band may include B3 band, B1 band, B41 band and the like.

[0038] In some embodiments, the matching adjustment performed by the first matched filter unit 13 and the second matched filter unit 15 is impedance matching adjustment, so that the impedance matching of the radiation branch 11 in the first frequency band and the second frequency band is better under the impedance matching adjustment of the first matched filter unit 13 and the second matched filter unit 15, respectively, and supports resonance in the first frequency band and the second frequency band, respectively. Wherein, when the first frequency band includes the first frequency band and the second frequency band, the radiation branch 11 can simultaneously support resonance in the first frequency band and the second frequency band under the matching adjustment of the first matched filter unit 13. For example, the first matched filter unit 13 can adjust the frequency point corresponding to the best impedance matching to be located between the first frequency band and the second frequency band, so that the impedance matching of the first frequency band and the second frequency band is better, and the radiation branch 11 can simultaneously support resonance in the first frequency band and the second frequency band under the matching adjustment of the first matched filter unit 13, and the radiation efficiency in the first frequency band and the second frequency band is higher. In some embodiments, when the second group of frequency bands also includes two or more frequency bands, that is, including the third frequency band and other frequency bands, the radiation branch 11 can simultaneously support resonance in the third frequency band and other frequency bands under the matching adjustment of the second matched filtering unit 15.

[0039] See also Figure 2 , is a further structural diagram of the antenna assembly 1 in some embodiments of the present application. Among them, Figure 2 Schematically shows the further structure of the first matched filtering unit 13 and the second matched filtering unit 15.

[0040] like Figure 2 As shown, in some embodiments, the first matched filtering unit 13 includes a first matching circuit 131 and a first filtering circuit 132, the first matching circuit 131 is used to achieve matching adjustment of the first group of frequency bands, and the first filtering circuit 132 is used to filter out the electromagnetic wave signals of the second group of frequency bands; the second matched filtering unit 15 includes a second matching circuit 151 and a second filtering circuit 152, the second matching circuit 151 is used to achieve matching adjustment of the second group of frequency bands, and the second filtering circuit 152 is used to filter out the electromagnetic wave signals of the first group of frequency bands.

[0041] That is, in some embodiments, the first matched filtering unit 13 specifically includes a first matching circuit 131 and a first filtering circuit 132, and the first matching circuit 131 and the first filtering circuit 132 are respectively used to achieve matching adjustment of the first group of frequency bands and filtering of the second group of frequency bands, and the second matched filtering unit 15 includes a second matching circuit 151 and a second filtering circuit 152, and the second matching circuit 151 and the second filtering circuit 152 are respectively used to achieve matching adjustment of the second group of frequency bands and filtering of the first group of frequency bands.

[0042] In some embodiments, the first filter circuit 132 is a high-pass filter circuit, and the second filter circuit 152 is a medium-low pass filter circuit. That is, in some embodiments, the first filter circuit 132 is a high-pass filter for filtering out electromagnetic wave signals in medium and low frequency bands and only allowing electromagnetic wave signals in high frequency bands to pass through, and the second filter circuit 152 is a medium-low pass filter circuit for filtering out electromagnetic wave signals in high frequency bands and only allowing electromagnetic wave signals in medium and low frequency bands to pass through.

[0043] Thus, as mentioned above, since the first group of frequency bands includes high-frequency bands higher than 3 GHz, and the second group of frequency bands includes medium and low-frequency bands lower than 3 GHz, when the first filtering circuit 132 is a high-pass filtering circuit, it allows the electromagnetic wave signals of the first group of frequency bands including the high-frequency bands to pass through, while preventing the electromagnetic wave signals of the second group of frequency bands including the medium and low-frequency bands from passing through. Therefore, the first feed source 12 can normally excite the radiation branch 11 to support the transmission and reception of the electromagnetic wave signals of the first group of frequency bands through the first matching filtering unit 13, and can avoid the electromagnetic wave signals of the second group of frequency bands from interfering with the electromagnetic wave signals of the first group of frequency bands. Similarly, the second filter circuit 152 is a medium-low pass filter circuit, which allows electromagnetic wave signals of the second group of frequency bands including medium-low frequency bands to pass through, while preventing electromagnetic wave signals of the first group of frequency bands including high frequency bands from passing through, so that the second feed source 14 can normally excite the radiation branch 11 to support the transmission and reception of electromagnetic wave signals of the second group of frequency bands through the second matched filter unit 15, and can avoid the electromagnetic wave signals of the first group of frequency bands from interfering with the electromagnetic wave signals of the second group of frequency bands. Therefore, while the radiation branch 11 and the feeding point F1 can be shared to support multiple groups of frequency bands, interference between multiple groups of frequency bands can also be avoided.

[0044] In some embodiments, Figure 2 As shown, the first matching circuit 131 and the first filtering circuit 132 are connected in series between the first feed source 12 and the feeding point F1, and the second matching circuit 151 and the second filtering circuit 152 are connected in series between the second feed source 14 and the feeding point F1.

[0045] That is, in some embodiments, the first matching circuit 131 and the first filtering circuit 132 are connected in series between the first feed source 12 and the feeding point F1, and respectively implement matching adjustment of the first group of frequency bands and filtering of the second group of frequency bands; the second matching circuit 151 and the second filtering circuit 152 are connected in series between the second feed source 14 and the feeding point F1, and respectively implement matching adjustment of the second group of frequency bands and filtering of the first group of frequency bands.

[0046] in, Figure 2 In the example, the first matching circuit 131 and the first filter circuit 132 are sequentially connected in series between the first feed source 12 and the feed point F1, and the second matching circuit 151 and the second filter circuit 152 are sequentially connected in series between the second feed source 14 and the feed point F1. Obviously, in some embodiments, the first filter circuit 132 and the first matching circuit 131 may be sequentially connected in series between the first feed source 12 and the feed point F1, and the second filter circuit 152 and the second matching circuit 151 may be sequentially connected in series between the second feed source 14 and the feed point F1.

[0047] In some embodiments, Figure 1 and Figure 2 As shown, the first feed 12 includes an output terminal 121, and the second feed 14 includes an output terminal 141. In the present application, "A" is connected between the first feed 12 and / or "B", which may refer to "A" being connected between the output terminal 121 of the first feed 12 and / or "B"; "A" is connected between the second feed 14 and / or "B", which may refer to "A" being connected between the output terminal 141 of the second feed 14 and / or "B".

[0048] Wherein, in some embodiments, the first feed source 12 is used to output a feed signal of a first group of frequency bands, that is, the first feed source 12 outputs the feed signal of the first group of frequency bands through the output terminal 121, and the feed signal of the first group of frequency bands is applied to the radiation branch 11 through the first matching filter unit 13 and the feeding point F1, and the radiation branch 11 is stimulated to support the transmission and reception of electromagnetic wave signals of the first group of frequency bands. In some embodiments, the second feed source 14 is used to output a feed signal of a second group of frequency bands, that is, the second feed source 14 outputs the feed signal of the second group of frequency bands through the output terminal 141, and the feed signal of the second group of frequency bands is applied to the radiation branch 11 through the second matching filter unit 15 and the feeding point F1, and the radiation branch 11 is stimulated to support the transmission and reception of electromagnetic wave signals of the second group of frequency bands.

[0049] In some embodiments, when the first group of frequency bands includes the first frequency band and the second frequency band, the feed signal of the first group of frequency bands output by the first feed source 12 includes multiple feed signals including the feed signal of the first frequency band and the feed signal of the second frequency band. At this time, the first feed source 12 may be a feed signal source obtained by mixing the multiple feed signals by a RF front-end circuit (not shown) through a combiner (not shown). Thus, the radiation branch 11 can be stimulated to operate in the corresponding first frequency band and the second frequency band. In some embodiments, when the second group of frequency bands also includes multiple frequency bands, for example, when the second group of frequency bands includes the third frequency band and other frequency bands, the second feed source 14 may also be a feed signal source obtained by mixing the multiple feed signals by a RF front-end circuit (not shown) through a combiner (not shown), thereby, the radiation branch 11 can be stimulated to operate in the corresponding third frequency band and other frequency bands.

[0050] In some embodiments, the first matching circuit 131 and the second matching circuit 151 may include a plurality of capacitors and / or inductors to achieve corresponding matching adjustments, and the first filtering circuit 132 and the second filtering circuit 152 may include at least a capacitor to achieve corresponding filtering functions.

[0051] See also Figure 3 , is a further detailed structural diagram of the antenna assembly 1 in some embodiments of the present application. Figure 3 Schematically illustrates further specific structures of the first matched filtering unit 13 and the second matched filtering unit 15.

[0052] like Figure 3 As shown, in some embodiments, the first matching circuit 131 includes a first inductor L1, a first capacitor C1 and a second capacitor C2, and the first filter circuit 132 includes a second inductor L2 and a third capacitor C3; the first inductor L1 and the first capacitor C1 are connected in series between the first feed source 12 and the first filter circuit 132, the second capacitor C2 is connected between the first feed source 12 and the ground GND, the third capacitor C3 is connected between the first capacitor C1 and the feed point F1, the second inductor L2 is connected between the first connection node N1 and the ground GND, and the first connection node N1 is the connection node between the third capacitor C3 and the first capacitor C1. Figure 3 As shown, the second matching circuit 151 includes a fourth capacitor C4 and a fifth capacitor C5, the second filtering circuit 152 includes a third inductor L3, the fourth capacitor C4 is connected between the second feed source 14 and the second filtering circuit 152, the fifth capacitor C5 is connected between the second feed source 14 and the ground GND, and the third inductor L3 is connected between the feeding point F1 and the fourth capacitor C4.

[0053] Thus, in some instances, by Figure 3 The specific structures of the first matched filtering unit 13 and the second matched filtering unit 15 are shown in the figure. The first matched filtering unit 13 can realize matching adjustment of the first group of frequency bands and realize filtering of the second group of frequency bands, and the second matched filtering unit 15 can realize matching adjustment of the second group of frequency bands and realize filtering of the first group of frequency bands.

[0054] Obviously, Figure 3 This is just an example, and the first matching circuit 131 , the second matching circuit 151 , the first filtering circuit 132 , and the second filtering circuit 152 may also include other suitable circuit structures.

[0055] In some embodiments, the third inductor L3 is a large inductor, and the inductance value of the third inductor L3 is greater than the inductance values ​​of the first inductor and the second inductor. Therefore, since the large inductor has the effect of blocking high frequencies, the second filtering circuit 152 includes the third inductor L3, which can effectively filter out the electromagnetic wave signals of the first group of frequency bands including the high frequency band.

[0056] In some embodiments, the capacitance values ​​of the first capacitor C1 and the second capacitor C2 are both 0.7pF, the inductance value of the first inductor L1 is 1nH, the inductance value of the second inductor L2 is 2nH, the capacitance value of the third capacitor C3 is 1pF, the inductance value of the third inductor L3 is 22nH, the capacitance value of the fourth capacitor C4 is 1.5pF, and the capacitance value of the fifth capacitor C5 is 3pF.

[0057] Obviously, the values ​​of the above-mentioned capacitors and inductors can be obtained based on simulation experiments. The values ​​of the above-mentioned capacitors and inductors are just examples. Other values ​​can be obtained based on simulation experiments as long as matching and filtering of the corresponding frequency bands can be achieved.

[0058] Please return to Figure 1-Figure 3 In some embodiments, the radiation branch 11 includes a first end 11a and a second end 11b opposite to each other, the first end 11a is an open end, the second end 11b is grounded, and the feeding point F1 is located between the first end 11a and the second end 11b.

[0059] That is, in some embodiments, the radiation branch 11 substantially forms an inverted F antenna. Since the inverted F antenna is a quarter-wavelength resonance mode, the required size is smaller, which can effectively reduce the overall size and reduce the space occupied.

[0060] In some embodiments, the length of the radiation branch 11 may be less than 1 / 4 of the wavelength corresponding to the second group of frequency bands. For example, the length of the radiation branch 11 may be 20.1 mm (millimeter), which can effectively reduce the size compared to the original size of 50 mm required for the GPS L5 and other frequency bands. As mentioned above, the high-frequency band is filtered out by the third inductor L3, which is a large inductor, and in fact, the third inductor L3 can effectively increase the electrical length. Therefore, in fact, the matching adjustment for the second group of frequency bands can be understood as the third inductor L3 and the capacitor in the second filter circuit 152 are matched to make the radiation branch 11 meet the resonance in the second group of frequency bands.

[0061] Therefore, the antenna assembly 1 of the present application, through the above structure, can achieve more frequency bands with fewer radiation branches, and can meet the needs of multiple antenna frequency bands within a limited space.

[0062] See also Figure 4 , is a structural block diagram of an electronic device 100 in some embodiments of the present application. Figure 4 As shown, the electronic device 100 may include the antenna assembly 1 described in any of the aforementioned embodiments. Thus, the electronic device 100 is equipped with the antenna assembly 1 in any of the aforementioned embodiments, and the first matching filter unit 13 is used to match and adjust the first group of frequency bands and filter the second group of frequency bands, and the second matching filter unit 15 is used to match and adjust the second group of frequency bands and filter the first group of frequency bands, and can support multiple different frequency bands and avoid interference between multiple frequency bands in the case of a shared feeding point and a radiation branch 11. Compared with the existing method that requires different radiation branches to achieve different frequency bands, the present application can achieve more frequency bands with fewer radiation branches, and can meet the requirements of multiple antenna frequency bands in a limited space.

[0063] See also Figure 5 , is a schematic plan view of an electronic device 100 in some embodiments of the present application. Figure 5 The structure of the antenna assembly 1 is shown in a top view from the back side of the electronic device 100, that is, from the side away from the display screen. Figure 1-Figure 3 The antenna assembly 1 shown in the above figures may also be the antenna assembly 1 viewed from the back side of the electronic device 100 .

[0064] Among them, Figure 5 As shown, the electronic device 100 further includes a frame B1, and the radiation branch 11 is disposed at the frame B1 of the electronic device 100. That is, in some embodiments, the radiation branch 11 is at the frame B1.

[0065] In some embodiments, the frame B1 of the electronic device 100 is a metal frame, and the radiation branch 11 may be a metal frame segment formed by opening a gap X0 in the metal frame of the electronic device 100. That is, in some embodiments, when the frame B1 of the electronic device 100 is a metal frame, the radiation branch 11 may be a metal frame segment formed by opening a gap X0 in the frame B1.

[0066] In some embodiments, Figure 5 As shown, the radiation branch node 11 may also form an open end by only opening the gap X0 at the first end 11a, and the second end 11b of the radiation branch node 11 may be connected to other adjacent branches, and the second end 11b is grounded, and the radiation branch node 11 is isolated from other adjacent branches by grounding. Obviously, in some embodiments, the second end 11b of the radiation branch node 11 may also have the gap X0 between it and the adjacent branches, so as to increase the isolation between it and other adjacent branches.

[0067] In some other embodiments, the frame B1 of the electronic device 100 is a non-metal frame, and the radiation branches 11 are metal segments arranged in the frame of the electronic device 100 .

[0068] 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 radiation branch 11 is a metal segment arranged in the frame B1 of the electronic device 100. The radiation branch 11 may be embedded in the frame of the electronic device 100, or arranged on the inner side of the frame of the electronic device 100.

[0069] like Figure 5 As shown, the frame B1 includes two opposite long frames B11 and two opposite short frames B12, wherein the radiation branch 11 can be arranged in one of the short frames B12. Figure 5 The electronic device 100 includes Figure 1 The antenna assembly 1 shown is used as an example for illustration. The structure of the antenna assembly 1 may be the structure in any of the above embodiments.

[0070] In some embodiments, the surface of the radiation branch 11 with the largest area is a surface parallel to the frame surface of the frame B1 , wherein the frame surface of the frame B1 is substantially perpendicular to the plane of the display screen of the electronic device 100 .

[0071] Among them, Figure 5The electronic device 100 includes a top D11, a bottom D12, and two side edges D13 and D14. The two long frames B11 are frames located at the two side edges D13 and D14 of the electronic device 100, respectively, and the two short frames B12 are frames located at the top D11 and the bottom D12 of the electronic device 100, respectively.

[0072] In some embodiments, Figure 5 As shown, the radiation branch 11 may be in a straight strip shape, and the radiation branch 11 may be disposed at a short border B12 located at the top D11 of the electronic device 100. That is, in some embodiments, the radiation branch 11 may be disposed at the top D11 of the electronic device 100.

[0073] Thus, when the second group of frequency bands includes satellite communication frequency bands, since communication or positioning is required in a normal holding state, that is, in a holding state with the top D11 facing upward, the antenna for satellite communication often needs to be facing the sky to align with the satellite in the sky. Therefore, the radiation branch 11 can be set at the short border B12 of the top D11 of the electronic device 100 to meet the needs of satellite communication. And because the radiation branch 11 can also support the transmission and reception of electromagnetic wave signals of the first group of frequency bands with the cooperation of the first matched filter unit 13, the radiation branch 11 can be effectively reused as a radiator of other frequency bands, and a smaller-sized radiation branch can be used to achieve multiple frequency bands.

[0074] In some embodiments, the radiation branch 11 may also be bent, with a portion disposed at the top D11 and another portion disposed at one of the side ends.

[0075] In some embodiments, when the second group of frequency bands does not include a satellite communication frequency band, for example, when the second group of frequency bands includes a low frequency band, a WiFi 2.4G frequency band, or a medium frequency band such as B3, B41, the radiating branch 11 can also be set at any side end, or can also be set at the bottom end D12, and so on.

[0076] 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 D12 of the electronic device 100 is the end where the headphone jack and the USB port are provided, and the top end D11 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.

[0077] like Figure 5 As shown, in some embodiments, the electronic device further includes a ground plate 101 , and the aforementioned ground GND may be the ground plate 101 .

[0078] That is, in some embodiments, the aforementioned various elements may be grounded by being connected to the ground plate 101 to achieve grounding.

[0079] like Figure 5 As shown, the electronic device 100 further includes a mainboard 102, wherein the aforementioned first feed source 12, second feed source 14, first matched filter unit 13, second matched filter unit 15, etc. may be arranged on the mainboard 102. In some embodiments, the grounding plate 101 may be at least a partial area of ​​a grounding layer on the mainboard 102.

[0080] Among them, Figure 5 As shown, the electronic device 100 further includes a middle frame 103, which is used to support structures such as a display screen, and the middle frame 103 is used as the ground of the entire device. The grounding layer on the motherboard 102 is connected to the middle frame 103 to provide a ground potential. In some embodiments, the grounding plate 101 may be at least a portion of the middle frame 103, and the aforementioned ground GND may also be at least a portion of the middle frame 103. Figure 5 In the figure, the ground plate 101 is taken as the middle frame 103 as an example for illustration.

[0081] The frame B1 of the electronic device 100 may also be provided with other antenna radiation branches, which are spaced apart by gaps X0. Since they are not related to the improvement of the present application, these other antenna radiation branches are not illustrated.

[0082] Please also read Figure 6 as well as Figure 7 , Figure 6is a schematic diagram of return loss obtained by simulation test when the electronic device 100 operates in the first group of frequency bands, Figure 7 It is a schematic diagram of return loss obtained by simulation test when the electronic device 100 operates in the second frequency band.

[0083] in, Figure 6 and Figure 7 It may be a return loss schematic diagram of the first group of frequency bands and a return loss schematic diagram of the second group of frequency bands obtained when the electronic device 100 works in the first group of frequency bands and the second group of frequency bands simultaneously.

[0084] Among them, 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 radiation efficiency.

[0085] in, Figure 6 and Figure 7 In the figure, the first group of frequency bands includes the N78 band (the resonant frequency is approximately 3.5 GHz) and the WiFi 5G band (the resonant frequency is approximately 5.5 GHz), and the second group of frequency bands includes the GPS L5 band (the resonant frequency is approximately 1176.45 MHz).

[0086] like Figure 6 As shown in the figure, the return loss at the resonant frequency of 3.5GHz in the N78 band is about -9dB, which is low, while the return loss at the resonant frequency of 5.5GHz in the WiFi 5G band is even lower, about only -13.5dB, which is very low. Figure 7 As shown in the figure, the return loss in the GPS L5 band is even lower than that in the WiFi 5G band, at only about -17dB.

[0087] It can be seen that the antenna component 1 of the electronic device 100 of the present application can support the first group of frequency bands and the second group of frequency bands at the same time, and the return loss working in the first group of frequency bands and the second group of frequency bands is very low, the antenna radiation efficiency is relatively high, and the radiation performance can be effectively ensured.

[0088] See also Figure 8 , is a schematic diagram of isolation obtained through simulation testing when the electronic device 100 works in the first group of frequency bands and the second group of frequency bands at the same time.

[0089] Among them, the smaller the amplitude corresponding to the isolation at a certain frequency band is, the less interference this frequency band is subject to from other frequency bands, and the higher the isolation between them is.

[0090] in, Figure 8In the figure, the first group of frequency bands includes the N78 band (the resonant frequency is approximately 3.5 GHz) and the WiFi 5G band (the resonant frequency is approximately 5.5 GHz), and the second group of frequency bands includes the GPS L5 band (the resonant frequency is approximately 1176.45 MHz).

[0091] like Figure 8 It is shown that at the resonant frequency of the second frequency band, that is, the GPS L5 frequency band, the isolation is about -30 dB, which is already very low. It can be seen that the isolation between the first frequency band and the second frequency band is relatively high.

[0092] Therefore, from Figure 8 It can be seen that the electronic device 100 can support two groups of frequency bands at the same time by sharing the radiation branch 11, and the isolation between the two groups of frequency bands is high, and the mutual interference is small.

[0093] See also Fig. 9 , is a schematic diagram of total system efficiency obtained through simulation testing when the electronic device 100 operates in the first group of frequency bands and the second group of frequency bands.

[0094] in, Fig. 9 It may be a schematic diagram of total system efficiency of the first group of frequency bands and the second group of frequency bands obtained when the electronic device 100 operates in the first group of frequency bands and the second group of frequency bands simultaneously.

[0095] The peak value of the system total efficiency curve in the same frequency band generally corresponds to the trough value of the corresponding input echo curve.

[0096] like Fig. 9 As shown, at the resonant frequency of 3.5GHz of the N78 band, the total system efficiency of the N78 band is the largest, which is approximately -4dB. The total system efficiency is relatively high, and good antenna efficiency can be achieved. At the resonant frequency of 5.5GHz of the WiFi 5G band, the total system efficiency of the WiFi 5G band is the largest, which is also approximately -4dB. The total system efficiency is relatively high, and good antenna efficiency can be achieved. At the resonant frequency of 1176.45MHz of the GPS L5 band, the total system efficiency of the GPS L5 band is the largest, which is approximately -8.5dB. The total system efficiency is also relatively high, and good antenna efficiency can be achieved.

[0097] It can be seen that the electronic device 100 in the present application has a relatively high total system efficiency at both the first and second frequency groups, and can achieve good radiation performance.

[0098] See also Fig.10, is a schematic diagram of the upper hemisphere occupancy when the electronic device 100 in some embodiments of the present application operates in the second frequency band.

[0099] in, Fig.10 The second group of frequency bands includes the GPS L5 frequency band, and Figure 5 The electronic device 100 shown works in the GPS L5 frequency band as an example, and a simulation test is performed to obtain a schematic diagram of the upper hemisphere ratio.

[0100] Among them, the upper hemisphere ratio reflects the ratio of radiation energy toward the top D11 of the electronic device 100. The higher the upper hemisphere ratio, the higher the ratio of radiation energy toward the top D11 of the electronic device 100, which can improve the satellite communication performance of satellite communication frequency bands such as GPS L5.

[0101] The upper hemisphere proportion value when the electronic device 100 works in the GPS L5 frequency band is the difference between the bottom value and the top value, which is approximately -9.9dB-(-6.7dB)=-3.2dB, wherein the bottom value reflects the omnidirectional radiation energy, and the top value reflects the radiation energy toward the top D11 of the electronic device 100. The smaller the difference between the two, the higher the upper hemisphere proportion. Fig.10 It can be seen that the absolute value of the difference of -9.9dB-(-6.7dB)=-3.2dB is only 3.2dB, which is very small. The upper hemisphere accounts for a high proportion, which can effectively increase the radiation energy toward the top D11 of the electronic device 100 and improve the satellite communication performance of satellite communication frequency bands such as GPS L5.

[0102] The other structures of the antenna assembly 1 included in the electronic device 100 can be found in the aforementioned Figure 1 The description of other related drawings will not be repeated here.

[0103] 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.

[0104] The electronic device 100 of the present application may be any electronic device with a communication function, such as a mobile phone, a tablet computer, or a laptop computer.

[0105] Through the antenna assembly 1 and the electronic device 100 in the present application, the first matching filter unit 13 is used to match and adjust the first group of frequency bands and filter the second group of frequency bands, and the second matching filter unit 15 is used to match and adjust the second group of frequency bands and filter the first group of frequency bands. In the case of a shared feeding point and a radiating branch 11, multiple different frequency bands can be supported and interference between multiple frequency bands can be avoided. Compared with the existing method that requires different radiating branches to achieve different frequency bands, the present application can achieve more frequency bands with fewer radiating branches, and can meet the needs of multiple antenna frequency bands within a limited space.

[0106] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0107] 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: Radiating branches, including feed points; First feed source; A first matched filter unit, connected between the first feed source and the feeding point; Second feed source; as well as A second matched filter unit, connected between the second feed source and the feeding point; Among them, the first feed source excites the radiating branch to support the transmission and reception of electromagnetic wave signals of the first group of frequency bands through the first matched filtering unit, and the second feed source excites the radiating branch to support the transmission and reception of electromagnetic wave signals of the second group of frequency bands through the second matched filtering unit, wherein the first group of frequency bands and the second group of frequency bands each include at least one frequency band, and the first group of frequency bands and the second group of frequency bands include different frequency bands, the first matched filtering unit is used to realize matching adjustment of the first group of frequency bands and filtering of the second group of frequency bands, and the second matched filtering unit is used to realize matching adjustment of the second group of frequency bands and filtering of the first group of frequency bands.

2. The antenna assembly according to claim 1, characterized in that: The first group of frequency bands includes frequency bands higher than 3 GHz, and the second group of frequency bands includes frequency bands lower than 3 GHz.

3. The antenna assembly according to claim 2, characterized in that: The first group of frequency bands includes a first frequency band and a second frequency band, and the second group of frequency bands includes a third frequency band.

4. The antenna assembly according to claim 2, characterized in that: The first frequency band and the second frequency band are respectively an N78 frequency band and a WiFi 5G frequency band, and the third frequency band is one of a satellite communication frequency band, a WiFi 2.4G frequency band, a low frequency band and a medium frequency band.

5. The antenna assembly according to claim 4, characterized in that: The satellite communication frequency band includes one of the GPS L1 frequency band, the GPS L5 frequency band, and the Beidou satellite communication frequency band.

6. The antenna assembly according to any one of claims 1 to 5, characterized in that: The first matched filtering unit includes a first matching circuit and a first filtering circuit, the first matching circuit is used to achieve matching adjustment of the first group of frequency bands, and the first filtering circuit is used to filter out electromagnetic wave signals of the second group of frequency bands; the second matched filtering unit includes a second matching circuit and a second filtering circuit, the second matching circuit is used to achieve matching adjustment of the second group of frequency bands, and the second filtering circuit is used to filter out electromagnetic wave signals of the first group of frequency bands.

7. The antenna assembly according to claim 6, characterized in that: The first filter circuit is a high-pass filter circuit, and the second filter circuit is a medium- and low-pass filter circuit.

8. The antenna assembly according to claim 6, characterized in that: The first matching circuit and the first filtering circuit are connected in series between the first feed source and the feeding point, and the second matching circuit and the second filtering circuit are connected in series between the second feed source and the feeding point.

9. The antenna assembly according to claim 8, characterized in that: The first matching circuit includes a first inductor, a first capacitor and a second capacitor, and the first filtering circuit includes a second inductor and a third capacitor; the first inductor and the first capacitor are connected in series between the first feed source and the first filtering circuit, the second capacitor is connected between the first feed source and the ground, the third capacitor is connected between the first capacitor and the feeding point, the second inductor is connected between a first connection node and the ground, and the first connection node is a connection node between the third capacitor and the first capacitor; the second matching circuit includes a fourth capacitor and a fifth capacitor, the second filtering circuit includes a third inductor, the fourth capacitor is connected between the second feed source and the second filtering circuit, the fifth capacitor is connected between the second feed source and the ground, and the third inductor is connected between the feeding point and the fourth capacitor.

10. The antenna assembly according to claim 9, characterized in that: The third inductor is a large inductor, and the inductance value of the third inductor is greater than the inductance values ​​of the first inductor and the second inductor.

11. The antenna assembly according to claim 9, characterized in that: The capacitance values ​​of the first capacitor and the second capacitor are both 0.7pF, the inductance value of the first inductor is 1nH, the inductance value of the second inductor is 2nH, the capacitance value of the third capacitor is 1pF, the inductance value of the third inductor is 22nH, the capacitance value of the fourth capacitor is 1.5pF, and the capacitance value of the fifth capacitor is 3pF.

12. The antenna assembly according to any one of claims 1 to 5, characterized in that: The radiation branch includes a first end and a second end opposite to each other, the first end is an open-circuit end, the second end is grounded, and the feeding point is located between the first end and the second end.

13. An electronic device, characterized in that: The electronic device comprises the antenna assembly according to any one of claims 1-12.

14. The electronic device according to claim 13, characterized in that: The electronic device further comprises a frame, and the radiation branches are metal segments arranged on the frame.

15. The electronic device according to claim 13 or 14, characterized in that: The electronic device comprises a top end, a bottom end and two side ends, and the radiation branch is arranged at the top end of the electronic device.

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