Antenna assembly and electronic equipment

Abstract

The invention provides an antenna assembly and electronic equipment. The antenna assembly comprises a radiator, a first feed source, a second feed source, a band-stop circuit and a band-pass circuit. The radiator comprises a first radiation branch knot, the first radiation branch knot comprises a first free end, a first feeding point, a second feeding point and a first grounding end which are arranged in sequence, and the first grounding end is grounded; the first feed source is electrically connected to the first feed point to excite the first radiation branch knot to support a first frequency band and a second frequency band, and the frequency of the second frequency band is smaller than that of the first frequency band; the second feed source is electrically connected to the second feed point to excite the first radiation branch knot to support a third frequency band, and the frequency of the third frequency band is smaller than that of the second frequency band; the band elimination circuit is connected between the first feed source and the first feeding point and is used for blocking a third frequency band; one end of the band-pass circuit is electrically connected to the second feeding point, the other end of the band-pass circuit is grounded, and the band-pass circuit is used for passing through at least one of the first frequency band and the second frequency band.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of communication, and in particular to an antenna assembly and an electronic device. BACKGROUND

[0002] With the development of technology, the popularity of electronic devices with communication functions such as mobile phones is increasing, and the functions are becoming more and more powerful. An antenna assembly is usually included in an electronic device to realize the communication function of the electronic device. However, the size of the radiator of the antenna assembly in the related art is large, which is not conducive to the layout in the electronic device. SUMMARY

[0003] In a first aspect, an embodiment of the present application provides an antenna assembly, which comprises:

[0004] a radiator, the radiator comprising a first radiating branch, the first radiating branch comprising a first free end, a first feeding point, a second feeding point and a first grounding end arranged in sequence, and the first grounding end being grounded;

[0005] a first feed source electrically connected to the first feeding point to excite the first radiating branch to support a first frequency band and a second frequency band, wherein the frequency of the second frequency band is less than the frequency of the first frequency band;

[0006] a second feed source electrically connected to the second feeding point to excite the first radiating branch to support a third frequency band, and the frequency of the third frequency band is less than the frequency of the second frequency band;

[0007] a band-stop circuit connected between the first feed source and the first feeding point, the band-stop circuit being used to block the third frequency band; and

[0008] a band-pass circuit having one end electrically connected to the second feeding point and the other end grounded, the band-pass circuit being used to pass at least one of the first frequency band and the second frequency band.

[0009] In a second aspect, the present application provides an electronic device comprising the antenna assembly of the first aspect.

[0010] In summary, the antenna assembly provided by the embodiment of the present application has the following advantages. The first feed source is electrically connected to the first feeding point of the first radiating branch, and the second feeding point is arranged at intervals from the first feeding point. The antenna assembly further comprises a band-pass circuit, one end of the band-pass circuit being electrically connected to the second feeding point, and the other end being grounded. The band-pass circuit is used to pass at least one of the first frequency band and the second frequency band. Therefore, the second feeding point is used as a lower point of the first frequency band and the second frequency band by the band-pass circuit. Therefore, the first feed source can better excite the first radiating branch to support the first frequency band and the second frequency band, and the communication function of the first frequency band and the second frequency band is realized. In addition, the second feed source is electrically connected to the second feeding point, and the antenna assembly further comprises a band-stop circuit, the band-stop circuit being electrically connected between the first feed source and the first feeding point, and being used to block the third frequency band. Therefore, the first feeding point is an open point of the third frequency band, so that the first radiating branch can better support the third frequency band. Therefore, the first radiating branch can support the first frequency band, the second frequency band and the third frequency band. In other words, the first frequency band and the second frequency band excited by the first feed source and the third frequency band supported by the second feed source can multiplex the first radiating branch. Compared with the related art in which the first frequency band, the second frequency band and the third frequency band are separately used by one radiating branch, the antenna assembly provided by the embodiment of the present application can multiplex the first radiating branch for the first frequency band, the second frequency band and the third frequency band. Therefore, the length of the first radiating branch in the antenna assembly is shorter, and the size of the antenna assembly is miniaturized. When the antenna assembly is applied to the electronic device, the layout of the antenna assembly in the electronic device is facilitated. BRIEF DESCRIPTION OF DRAWINGS

[0011] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the embodiments will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort.

[0012] Figure 1 a schematic diagram of an antenna assembly provided by an embodiment of the present application;

[0013] Figure 2 a schematic diagram of a band-stop circuit in an embodiment; Figure 1

[0014] Figure 3 a schematic diagram of an antenna assembly provided by another embodiment of the present application;

[0015] Figure 4 a schematic diagram of an antenna assembly provided by another embodiment of the present application;​Figure 3 A schematic diagram of the first tuning circuit in the provided antenna assembly;

[0016] Figure 5 This is a schematic diagram of a bandpass circuit according to one embodiment;

[0017] Figure 6 A schematic diagram of an antenna assembly provided for another embodiment of this application;

[0018] Figure 7 for Figure 6 A schematic diagram of the second tuning circuit shown;

[0019] Figure 8 for Figure 1 A schematic diagram showing the flow direction of the first resonant current when the first radiating stub in the provided antenna assembly supports the first frequency band;

[0020] Figure 9 for Figure 1 A schematic diagram showing the flow direction of the second resonant current when the first radiating stub in the provided antenna assembly supports the second frequency band;

[0021] Figure 10 for Figure 1 A schematic diagram showing the flow direction of the third resonant current when the first radiating stub in the provided antenna assembly supports the third frequency band.

[0022] Figure 11 A schematic diagram of an antenna assembly provided in another embodiment of this application;

[0023] Figure 12 for Figure 11 A schematic diagram of the fourth resonant current corresponding to the fourth resonant mode shown in the figure;

[0024] Figure 13 for Figure 11 A schematic diagram of the fifth resonant current corresponding to the fifth resonant mode shown in the figure;

[0025] Figure 14 for Figure 11 A detailed schematic diagram of the antenna assembly shown;

[0026] Figure 15 A schematic diagram of an antenna assembly provided in another embodiment of this application;

[0027] Figure 16 One implementation method Figure 15 A schematic diagram of the circuit structure of the provided antenna assembly;

[0028] Figure 17 A schematic diagram showing the dimensions of the radiator in an antenna assembly provided in one embodiment of this application;

[0029] Figure 18 The antenna efficiency simulation curve when the first feed source in the antenna assembly provided by an embodiment of the present application excites the first frequency band and the second frequency band;

[0030] Figure 19 The antenna efficiency simulation curve when the second feed source in the antenna assembly provided by an embodiment of the present application excites the third frequency band;

[0031] Figure 20 The antenna efficiency simulation curve when the third feed source in the antenna assembly provided by an embodiment of the present application excites the first frequency band and the fourth frequency band;

[0032] Figure 21 The schematic diagram of an electronic device provided by an embodiment of the present application;

[0033] Figure 22 The partial structural schematic diagram of the electronic device shown in Figure 21 The partial structural schematic diagram of the electronic device shown in DETAILED DESCRIPTION

[0034] The technical solutions of the present application will be described clearly and completely below with reference to the drawings. Obviously, the embodiments described in the present application are only part of the embodiments, rather than all the embodiments. Based on the embodiments provided in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0035] In the present application, the phrase “embodiment” means that the specific features, structures or characteristics described in connection with the embodiment can be included in at least one embodiment of the present application. The appearance of this phrase at various places in the specification does not necessarily mean the same embodiment, nor is it an independent or alternative embodiment to other embodiments. Those skilled in the art can explicitly and implicitly understand that the embodiments described in the present application can be combined with other embodiments.

[0036] The terms “first”, “second”, and the like in the specification of the present application and the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order. In addition, the terms “include” and “have” and any variations thereof are intended to cover non-exclusive inclusion. For example: the assembly or device including one or more components is not limited to the listed one or more components, but can optionally include one or more components that are not listed but are inherent to the product exemplified, or one or more components that should be included based on the described function.

[0037] The antenna assembly 10 provided by the embodiment of the present application is described in detail as follows. In order to facilitate understanding, color drawing (a) and gray drawing (b) are used in some of the drawings for illustration when the antenna assembly 10 provided by the embodiment of the present application is described in combination with the drawings. In the same drawing, (a) is the color drawing, and (b) is the gray drawing corresponding to the drawing (a) in the same drawing.

[0038] Please refer to Figure 1 , Figure 1 The schematic diagram of the antenna assembly provided by the embodiment of the present application is shown. The antenna assembly 10 includes a radiator 100, a first feed source S1, a second feed source S2, a band-stop circuit 130 and a band-pass circuit 140. The radiator 100 includes a first radiating branch 110. The first radiating branch 110 includes a first free end 111, a first feed point P1, a second feed point P2 and a first grounding end 112 arranged in sequence, and the first grounding end 112 is grounded. The first feed source S1 is electrically connected to the first feed point P1 to excite the first radiating branch 110 to support a first frequency band and a second frequency band. The frequency of the second frequency band is less than the frequency of the first frequency band. The second feed source S2 is electrically connected to the second feed point P2 to excite the first radiating branch 110 to support a third frequency band, and the frequency of the third frequency band is less than the frequency of the second frequency band. The band-stop circuit 130 is connected between the first feed source S1 and the first feed point P1, and the band-stop circuit 130 is used to block the third frequency band. The band-pass circuit 140 is electrically connected to the second feed point P2 at one end and grounded at the other end, and the band-pass circuit 140 is used to pass at least one of the first frequency band and the second frequency band.

[0039] The first radiating branch 110 can be a Laser Direct Structuring (LDS) radiating branch, or a Flexible Printed Circuit (FPC) radiating branch, or a Print Direct Structuring (PDS) radiating branch, or a metal branch radiating branch. When the antenna assembly 10 is applied to an electronic device 1, the first radiating branch 110 can be a Mechanical Design Antenna (MDA) radiating branch designed by embedding the electronic device 1 (see Figure 21 and Figure 22 ) itself. For example, the first radiating branch 110 can be formed by the middle frame 30 (see Figure 21 and Figure 22The first radiating stub 110 can also be a frame radiating stub designed for the metal frame 30. When the first radiating stub 110 is a frame radiating stub, the frame 30 includes a frame body 310 and a frame portion 320. The frame body 310 is a ground electrode (also called a ground plane). In one embodiment, the first grounding terminal 112 is electrically connected to the frame body 310 for grounding. The frame portion 320 is bent and connected to the periphery of the frame body 310. The frame portion 320 has a gap (named the first gap) to form the first free end 111.

[0040] The first grounding terminal 112 of the first radiating branch 110 can be grounded in a manner that is not limited to, but can be, electrically connected to the ground electrode through a grounding element (such as a conductive spring, conductive adhesive, conductive screw, or connecting rib, etc.).

[0041] The first feed source S1 can be electrically connected to the first feed point P1 in a way that is not limited to, but can be, the first feed source S1 is electrically connected to the first feed point P1 through a feed component (such as a conductive spring, conductive adhesive, conductive screw, or connecting rib, etc.).

[0042] The first feed source S1 is electrically connected to the first feed point P1 to excite the first radiating stub 110 to support the first frequency band and the second frequency band. Therefore, the first radiating stub 110 can support more frequency bands, enabling the antenna assembly 10 to realize the communication functions of the first frequency band and the second frequency band.

[0043] In one embodiment, the first frequency band is the N78 band, and the second frequency band is the WiFi 2.4G band. It is understood that in other embodiments, the first and second frequency bands can be other frequency bands, as long as the frequency of the second frequency band is lower than the frequency of the first frequency band.

[0044] The second feed source S2 can be electrically connected to the second feed point P2 in a manner that is not limited to, but can be, the second feed source S2 being electrically connected to the second feed point P2 through a feed component (such as a conductive spring, conductive adhesive, conductive screw, or connecting rib, etc.).

[0045] The frequency of the third frequency band is lower than that of the second frequency band. For example, the second frequency band is the WiFi 2.4G frequency band, and the third frequency band is a low-frequency band (such as the B28 frequency band).

[0046] In this embodiment, the band-stop circuit 130 is connected between the first feed source S1 and the first feed point P1. In other words, the first feed source S1 is connected in series with the band-stop circuit 130 to the first feed point P1. The band-stop circuit 130 is used to block the third frequency band. Therefore, the first feed point P1 is an open circuit point for the third frequency band supported by the second feed source S2.

[0047] The bandpass circuit 140 is configured to pass through at least one of the first frequency band and the second frequency band. Specifically, in one embodiment, the bandpass circuit 140 is configured to pass through the first frequency band. When the bandpass circuit 140 is configured to pass through the first frequency band, it may pass through all or part of the first frequency band. In another embodiment, the bandpass circuit 140 is configured to pass through the second frequency band. When the bandpass circuit 140 is configured to pass through the second frequency band, it may pass through all or part of the second frequency band. In yet another embodiment, the bandpass circuit 140 is configured to pass through both the first frequency band and the second frequency band. It is understood that when the bandpass circuit 140 is configured to pass through both the first frequency band and the second frequency band, the bandpass circuit 140 may pass through all or part of the first frequency band; and the bandpass circuit 140 may pass through all or part of the second frequency band.

[0048] Since one end of the bandpass circuit 140 is connected to the second feed point P2 and the other end is grounded; and since the bandpass circuit 140 is used to transmit at least one of the first frequency band and the second frequency band, the resonant current of the first frequency band (i.e., the first resonant current) and the resonant current of the second frequency band (i.e., the second resonant current) can be transmitted to the ground electrode 200 via the bandpass circuit 140. Therefore, the second feed point P2 can serve as the lower ground point for the first frequency band and the second frequency band supported by the first feed source S1.

[0049] In summary, the antenna assembly 10 provided in this application has a first feed source S1 electrically connected to a first feed point P1 of the first radiating stub 110, and a second feed point P2 spaced apart from the first feed point P1. The antenna assembly 10 also includes a bandpass circuit 140, one end of which is electrically connected to the second feed point P2, and the other end is grounded. The bandpass circuit 140 is used to pass at least one of the first frequency band and the second frequency band. Therefore, the bandpass circuit 140 makes the second feed point P2 the lower ground point of the first frequency band and the second frequency band. Thus, the first feed source S1 can effectively excite the first radiating stub 110 to support the first frequency band and the second frequency band, thereby realizing the communication function of the first frequency band and the second frequency band. Furthermore, the second feed source S2 is electrically connected to the second feed point P2. The antenna assembly 10 also includes a band-stop circuit 130, which is electrically connected between the first feed source S1 and the first feed point P1 to block the third frequency band. Therefore, the first feed point P1 is an open-circuit point for the third frequency band, allowing the first radiating stub 110 to better support the third frequency band. Thus, the first radiating stub 110 can support the first frequency band, the second frequency band, and the third frequency band. In other words, the first and second frequency bands excited by the first feed source S1, and the third frequency band supported by the second feed source S2, can reuse the first radiating stub 110. Compared to related technologies where the first, second, and third frequency bands each utilize a single radiating stub, the antenna assembly 10 provided in this application allows the first, second, and third frequency bands to reuse the first radiating stub 110. This results in a shorter length of the first radiating stub 110, thereby miniaturizing the antenna assembly 10. When the antenna assembly 10 is applied to the electronic device 1, it facilitates the layout of the antenna assembly 10 within the electronic device 1.

[0050] Please refer to the following: Figure 1 and Figure 2 , Figure 2 One implementation method Figure 1 A schematic diagram of a band-stop circuit. In this embodiment, the band-stop circuit 130 includes a first filter inductor L11 and a first filter capacitor C11. One end of the first filter inductor L11 is electrically connected to the first feed source S1, and the other end of the first filter inductor L11 is electrically connected to the first feed point P1. The first filter capacitor C11 is connected in parallel with the first filter inductor L11.

[0051] It should be noted that one end of the first filter inductor L11 is electrically connected to the first feed source S1. This can be, but is not limited to, one end of the first filter inductor L11 being directly electrically connected to the first feed source S1, or the first filter inductor L11 being indirectly electrically connected to the first feed source S1.

[0052] The first filter capacitor C11 is connected in parallel with the first filter inductor L11. Therefore, the band-stop circuit 130 is also called an inductor-capacitor (LC) band-stop filter circuit.

[0053] The band-stop circuit 130 provided in this embodiment includes a first filter inductor L11 and a first filter capacitor C11. The first filter inductor L11 and the first filter capacitor C11 work together to effectively block the third frequency band, thereby making the first feed point P1 an open circuit point of the third frequency band, and thus enabling the first radiating stub 110 to better support the third frequency band. Furthermore, the band-stop circuit 130 provided in this embodiment includes the first filter inductor L11 and the first filter capacitor C11; therefore, the structure of the band-stop circuit 130 is simple and easy to implement.

[0054] Please see Figure 3 , Figure 3 This is a schematic diagram of an antenna assembly provided for another embodiment. The antenna assembly 10 further includes a first tuning circuit 150. The first tuning circuit 150 is electrically connected between the band-stop circuit 130 and the first feed source S1, and the first tuning circuit 150 is a tuning circuit for the first frequency band and the second frequency band.

[0055] In this embodiment, the antenna assembly 10 includes a band-stop circuit 130 and a first tuning circuit 150. The first tuning circuit 150 of the antenna assembly 10 can be, but is not limited to, a... Figure 2 The structure shown.

[0056] The first tuning circuit 150 is a tuning circuit for the first frequency band and the second frequency band. Therefore, the antenna assembly 10 can better support the first frequency band and the second frequency band, and the antenna assembly 10 can have better communication functions in the first frequency band and the second frequency band.

[0057] Please see Figure 4 , Figure 4 for Figure 3A schematic diagram of the first tuning circuit in the provided antenna assembly. In this embodiment, the schematic diagram uses the band-stop circuit 130 of the antenna assembly 10, including a first filter inductor L11 and a first filter capacitor C11, as an example. It should be understood that this should not be construed as a limitation of the embodiments of this application. The first tuning circuit 150 includes a first capacitor C21, a first inductor L21, a second capacitor C22, and a second inductor L22. One end of the first capacitor C21 is electrically connected to the first feed source S1, and the other end of the first capacitor C21 is grounded. One end of the first inductor L21 is connected to the first end of the first capacitor C21. One end of the second capacitor C22 is connected to the other end of the first inductor L21, and the other end of the second capacitor C22 is connected to the first filter inductor L11. One end of the second inductor L22 is connected to the first filter inductor L11, and the other end of the second inductor L22 is grounded.

[0058] In this embodiment, the first tuning circuit 150 includes a first capacitor C21, a first inductor L21, a second capacitor C22, and a second inductor L22, which can better tune the first frequency band and the second frequency band, so that the antenna assembly 10 has better communication function in the first frequency band and the second frequency band.

[0059] In addition, the first tuning circuit 150 includes a first capacitor C21, a first inductor L21, a second capacitor C22 and a second inductor L22, and its structure is simple and easy to implement.

[0060] Please refer to the following: Figure 3 , Figure 4 and Figure 5 , Figure 5 This is a schematic diagram of a bandpass circuit according to one embodiment. In this embodiment, the structure of the bandpass circuit 140 can be incorporated into the antenna assembly 10 provided in any of the preceding embodiments. The structure of the antenna assembly 10 shown in the schematic diagram of this embodiment should not be construed as a limitation on the antenna assembly 10 provided in the embodiments of this application. In this embodiment, the bandpass circuit 140 includes a second filter inductor L12 and a second filter capacitor C12. One end of the second filter capacitor C12 is electrically connected to the second feed point P2. One end of the second filter capacitor C12 is electrically connected to the other end of the second filter inductor L12, and the other end of the second filter capacitor C12 is grounded.

[0061] In other words, in this embodiment, the bandpass circuit 140 includes a second filter inductor L12 and a second filter capacitor C12 connected in series, and the second feed point P2 is grounded through the second filter inductor L12 and the second filter capacitor C12 connected in series.

[0062] The second filter inductor L12 and the second filter capacitor C12 can be effectively used to pass through at least one of the first frequency band and the second frequency band. The resonant current of the at least one of the first frequency band and the second frequency band is transmitted to the ground electrode through the second filter inductor L12 and the second filter capacitor C12. Therefore, the second feed point P2 can be used as the lower ground point of the first frequency band and the second frequency band supported by the first feed source S1.

[0063] The bandpass circuit 140 in the antenna assembly 10 provided in this application includes a second filter inductor L12 and a second filter capacitor C12, and the structure is simple and easy to implement.

[0064] Please see Figure 6 , Figure 6 This is a schematic diagram of an antenna assembly provided according to another embodiment of this application. In this embodiment, the antenna assembly 10 further includes a second tuning circuit 160. The second tuning circuit 160 is electrically connected between the bandpass circuit 140 and the second feed source S2, and the second tuning circuit 160 is a tuning circuit for the third frequency band.

[0065] It is understood that the antenna assembly 10 shown in the schematic diagrams of the embodiments of this application should not be construed as a limitation on the embodiments of this application.

[0066] The second tuning circuit 160 is the tuning circuit for the third frequency band, thus enabling the antenna assembly 10 to better support the third frequency band and thus enabling the antenna assembly 10 to have better communication performance in the third frequency band.

[0067] Please refer to the following: Figure 6 and Figure 7 , Figure 7 for Figure 6 The diagram shows a schematic of the second tuning circuit. The second tuning circuit 160 includes a third capacitor C23 and a fourth capacitor C24. One end of the third capacitor C23 is electrically connected to the second feed source S2, and the other end of the third capacitor C23 is electrically connected to the second feed point P2. One end of the fourth capacitor C24 is electrically connected to the second feed point P2, and the other end of the fourth capacitor C24 is grounded.

[0068] In this embodiment, the second tuning circuit 160 includes a third capacitor C23 and a third and fourth capacitor C24, which can better tune the third frequency band, so that the antenna assembly 10 has better communication performance in the third frequency band.

[0069] In addition, the second tuning circuit 160 includes a third capacitor C23 and a third and fourth capacitor C24, and its structure is simple and easy to implement.

[0070] The resonant current and resonant mode of the first radiating branch 110 in the antenna assembly 10 provided in the embodiments of this application when it supports the first frequency band, the second frequency band and the third frequency band will be described next.

[0071] Please refer to the following: Figure 1 and Figure 8 , Figure 8 for Figure 1 A schematic diagram showing the flow of the first resonant current when the first radiating stub in the provided antenna assembly supports the first frequency band. Please refer to... Figure 8 The first feed source S1 excites the first resonant mode of the first radiating stub 110 to support the first frequency band, wherein the first resonant mode is a quarter-wavelength mode from the first feed point P1 to the first free end 111.

[0072] When the first feed source S1 excites the first resonant mode of the first radiating stub 110, a first resonant current I1 is generated. In the current half-wavelength period shown in the schematic diagram of this embodiment: the first resonant current I1 flows from the first feed point P1 to the first free end 111. It can be understood that the first resonant current I1 is periodically changing. In the next half-wavelength period: the first resonant current I1 flows from the first free end 111 to the first feed point P1.

[0073] The first resonant mode is a quarter-wavelength mode from the first feed point P1 to the first free end 111. Therefore, when the first radiating stub 110 supports the first frequency band, it utilizes the portion of the first radiating stub 110 from the first feed point P1 to the first free end 111. Furthermore, the quarter-wavelength mode is also called the fundamental mode, which has good radiation efficiency. The first feed source S1 excites the first resonant mode of the first radiating stub 110 to support the first frequency band. The first resonant mode is a quarter-wavelength mode from the first feed point P1 to the first free end 111; in other words, the fundamental mode of the first radiating stub 110 from the first feed point P1 to the first free end 111 supports the first frequency band. Therefore, the antenna assembly 10 has good radiation efficiency in the first frequency band.

[0074] Please refer to the following: Figure 1 and Figure 9 , Figure 9 for Figure 1 A schematic diagram showing the flow of the second resonant current when the first radiating stub in the provided antenna assembly supports the second frequency band. The first feed S1 excites the second resonant mode of the first radiating stub 110 to support the second frequency band, wherein the second resonant mode is a quarter-wavelength mode from the second feed point P2 to the first free end 111.

[0075] When the first feed source S1 excites the second resonant mode of the first radiating stub 110, a second resonant current I2 is generated. In the current half-wavelength period shown in the schematic diagram of this embodiment: the second resonant current I2 flows from the second feed point P2 to the first free end 111. It can be understood that the second resonant current I2 is periodically changing. In the next half-wavelength period: the second resonant current I2 flows from the first free end 111 to the second feed point P2.

[0076] The second resonant mode is a quarter-wavelength mode from the second feed point P2 to the first free end 111. Therefore, when the first radiating stub 110 supports the second frequency band, it utilizes the portion of the first radiating stub 110 from the second feed point P2 to the first free end 111. Furthermore, the quarter-wavelength mode is also called the fundamental mode, which has good radiation efficiency. The first feed source S1 excites the second resonant mode of the first radiating stub 110 to support the second frequency band. The second resonant mode is a quarter-wavelength mode from the second feed point P2 to the first free end 111. In other words, the fundamental mode of the first radiating stub 110 from the second feed point P2 to the first free end 111 supports the second frequency band. Therefore, the antenna assembly 10 has good radiation efficiency in the second frequency band.

[0077] Please see Figure 10 , Figure 10 for Figure 1 A schematic diagram showing the flow of the third resonant current when the first radiating stub in the provided antenna assembly supports the third frequency band. The second feed S2 excites the third resonant mode of the first radiating stub 110 to support the third frequency band, wherein the third resonant mode is a quarter-wavelength mode from the first ground terminal 112 to the first free terminal 111.

[0078] When the second feed S2 excites the third resonant mode of the first radiating stub 110, a third resonant current I3 is generated. In the current half-wavelength period shown in the schematic diagram of this embodiment: the third resonant current I3 flows from the first ground terminal 112 to the first free terminal 111. It can be understood that the third resonant current I3 is periodically changing. In the next half-wavelength period: the third resonant current I3 flows from the first free terminal 111 to the first ground terminal 112.

[0079] The quarter-wavelength mode, also known as the fundamental mode, has good radiation efficiency. The third resonant mode is the quarter-wavelength mode from the first ground terminal 112 to the first free terminal 111. Therefore, when the first radiating stub 110 supports the third frequency band, it utilizes the fundamental mode of the first radiating stub 110. Since the third resonant mode is the fundamental mode of the first radiating stub 110, the antenna assembly 10 has good radiation efficiency in the third frequency band.

[0080] Furthermore, as can be seen in this simulation diagram, during the current half-wavelength period shown in the schematic diagram of this embodiment, the third resonant current I3 flows from the first ground terminal 112 to the first free terminal 111 (or can be considered as the third resonant current I3 flowing from the first ground terminal 112 to the first gap), which can significantly excite the current on the ground electrode 200, effectively increasing the antenna wavelength excited by the original frame portion 320 size, thus enabling the antenna assembly 10 to be miniaturized. In one embodiment, when the first radiating branch 110 is arranged corresponding to the long side of the ground electrode, the third resonant mode can significantly excite the current on the ground electrode, effectively increasing the antenna wavelength excited by the original frame portion 320 size, thus further miniaturizing the antenna assembly 10.

[0081] Please see Figure 11 , Figure 11 This is a schematic diagram of an antenna assembly provided in another embodiment of this application. In this embodiment, the radiator 100 further includes a second radiating stub 120 and a third feed source S3. The second radiating stub 120 is integrally formed with the first radiating stub 110, and the second radiating stub 120 has a second ground terminal 121, a third feed point P3, and a second free terminal 122 arranged sequentially. The second ground terminal 121 is connected to the first ground terminal 112 and is integrally formed with it, and the second ground terminal 121 is grounded. The third feed source S3 is electrically connected to the third feed point P3 to excite the second radiating stub 120 to support the first frequency band and the fourth frequency band, wherein the frequency of the fourth frequency band is lower than the frequency of the second frequency band, and the frequency of the fourth frequency band is higher than the frequency of the third frequency band.

[0082] In this embodiment, the radiator 100 further includes a second radiating stub 120 and a third feed source S3, which can be incorporated into the antenna assembly 10 provided in any of the preceding embodiments. The schematic diagram of this embodiment illustrates the example of the radiator 100 further including the second radiating stub 120 and the third feed source S3 incorporated into the antenna assembly 10 provided in any of the preceding embodiments; it should be understood that this should not be construed as a limitation on the embodiments of this application.

[0083] The second radiating branch 120 can be a laser direct forming (LDS) radiating branch, a flexible printed circuit (FPC) radiating branch, a printed direct forming (PDS) radiating branch, or a metal branch radiating branch. When the antenna assembly 10 is applied to the electronic device 1, the second radiating branch 120 can be a branch utilizing the electronic device 1 (see...). Figure 21 and Figure 22 The second radiating stub is a mechanical design antenna (MDA) with its own embedded metal design. For example, the second radiating stub 120 can utilize the plastic and metal mid-frame 30 of the electronic device 1 (see...). Figure 21 and Figure 22 The second radiating stub 120 can also be a frame radiating stub designed for the metal frame 30. When the second radiating stub 120 is a frame radiating stub, the frame 30 includes a frame body 310 and a frame portion 320. The frame body 310 is a ground electrode (also called a ground plane). In one embodiment, the second grounding terminal 121 is electrically connected to the frame body 310 for grounding. The frame portion 320 is bent and connected to the periphery of the frame body 310. The frame portion 320 has a gap (named the second gap) to form the second free end 122.

[0084] The second grounding terminal 121 of the second radiating branch 120 can be grounded by, but is not limited to, through a grounding element (such as a conductive spring, conductive adhesive, conductive screw, or connecting bar, etc.) electrically connected to the ground electrode.

[0085] The third feed source S3 can be electrically connected to the third feed point P3 in a manner that is not limited to, but can be, through a feed component (such as a conductive spring, conductive adhesive, conductive screw, or connecting rib, etc.) to the third feed point P3.

[0086] As described above, the first feed source S1 is electrically connected to the first feed point P1 to excite the first radiating stub 110 to support the first frequency band. In this embodiment, the third feed source S3 is electrically connected to the third feed point P3 to excite the second radiating stub 120 to support the first frequency band. Therefore, in the antenna assembly 10 provided in this embodiment, both the first radiating stub 110 and the second radiating stub 120 support the first frequency band, thus the antenna assembly 10 has good communication performance in the first frequency band. Furthermore, since the positions of the first radiating stub 110 and the second radiating stub 120 are different, the radiation pattern when the first radiating stub 110 supports the first frequency band is different from that when the second radiating stub 120 supports the first frequency band (also referred to as the directivity of the first radiating stub 110 supporting the first frequency band being different from the directivity of the second radiating stub 120 supporting the first frequency band). Therefore, the antenna assembly 10 provided in this embodiment has good communication performance in multiple directions of the radiation pattern in the first frequency band.

[0087] Furthermore, the third feed source S3 is electrically connected to the third feed point P3 to excite the second radiating stub 120 to support the first frequency band and the fourth frequency band. Therefore, the second radiating stub 120 can support more frequency bands, enabling the antenna assembly 10 to realize the communication functions of the first frequency band and the fourth frequency band.

[0088] In one embodiment, the first frequency band is the N78 band, and the fourth frequency band is the GPS L1 band. It is understood that in other embodiments, the first frequency band and the fourth frequency band can also be other frequency bands, as long as the frequency of the fourth frequency band is greater than the frequency of the third frequency band.

[0089] Please refer to the following: Figure 11 and Figure 12 , Figure 12 for Figure 11 The diagram shows the fourth resonant current corresponding to the fourth resonant mode. In this embodiment, the third feed S3 excites the fourth resonant mode to support the fourth frequency band. The fourth resonant mode is a quarter-wavelength mode from the second ground terminal 121 to the second free terminal 122.

[0090] When the third feed S3 excites the fourth resonant mode of the second radiating stub 120, a fourth resonant current I4 is generated. In the current half-wavelength period shown in the schematic diagram of this embodiment: the fourth resonant current I4 flows from the second ground terminal 121 to the second free terminal 122. It can be understood that the fourth resonant current I4 is periodically changing. In the next half-wavelength period: the fourth resonant current I4 flows from the second free terminal 122 to the second ground terminal 121.

[0091] The quarter-wavelength mode, also known as the fundamental mode, has good radiation efficiency. The fourth resonant mode is the quarter-wavelength mode from the second ground terminal 121 to the second free terminal 122; in other words, the fundamental mode of the second radiating stub 120 supports the fourth frequency band. Therefore, the antenna assembly 10 has good radiation efficiency in the fourth frequency band.

[0092] Please refer to the following: Figure 11 and Figure 13 , Figure 13 for Figure 11 The diagram shows the fifth resonant current corresponding to the fifth resonant mode. The third feed source S3 excites the fifth resonant mode to support the first frequency band, wherein the fifth resonant mode is a quarter-wavelength mode from the third feed point P3 to the second free end 122.

[0093] When the third feed source S3 excites the fifth resonant mode of the second radiating stub 120, a fifth resonant current I5 is generated. In the current half-wavelength period shown in the schematic diagram of this embodiment: the fifth resonant current I5 flows from the third feed point P3 to the second free end 122. It can be understood that the fifth resonant current I5 is periodically changing. In the next half-wavelength period: the fifth resonant current I5 flows from the second free end 122 to the third feed point P3.

[0094] The fifth resonant mode is a quarter-wavelength mode from the third feed point P3 to the second free end 122. Therefore, when the second radiating stub 120 supports the first frequency band, it utilizes the portion of the second radiating stub 120 from the third feed point P3 to the second free end 122. Furthermore, the quarter-wavelength mode is also called the fundamental mode, which has good radiation efficiency. The third feed source S3 excites the fifth resonant mode to support the first frequency band. The fifth resonant mode is a quarter-wavelength mode from the third feed point P3 to the second free end 122. In other words, the fundamental mode of the portion of the second radiating stub 120 from the third feed point P3 to the second free end 122 supports the first frequency band. Therefore, the antenna assembly 10 has good radiation efficiency in the first frequency band.

[0095] Please see Figure 11 The second grounding terminal 121 is connected to the first grounding terminal 112 and is an integral structure, and the second grounding terminal 121 and the first grounding terminal 112 are grounded through the same grounding component 190.

[0096] As described above, the first grounding terminal 112 is grounded. In this embodiment, the second grounding terminal 121 is connected to the first grounding terminal 112 and is an integral structure, and the second grounding terminal 121 is grounded. In one embodiment, the first grounding terminal 112 and the second grounding terminal 121 share the same grounding component 190 for grounding.

[0097] The antenna assembly 10 provided in this application embodiment has a second grounding terminal 121 connected to the first grounding terminal 112 and forming an integral structure. The second grounding terminal 121 and the first grounding terminal 112 are grounded through the same connector. On the one hand, this can provide better isolation between the first frequency band supported by the first radiating stub 110 and the first frequency band supported by the second radiating stub 120. On the other hand, it can also reduce the number of grounding components 190 used in the antenna assembly 10, which is beneficial to the layout of the grounding components 190 and other devices in the antenna assembly 10.

[0098] The grounding component 190 can be, but is not limited to, a conductive spring, conductive adhesive, conductive screw, or connecting rib, etc.

[0099] In this embodiment, the grounding component 190 is a connecting rib (e.g., a metal connecting rib, also known as a ground return metal connecting rib). When the grounding component 190 is a connecting rib, the connection between the grounding component 190 and the ground electrode is more secure, improving the reliability of the connection between the grounding component 190 and the ground electrode, thereby ensuring better isolation between the first frequency band supported by the first radiating stub 110 and the first frequency band supported by the second radiating stub 120.

[0100] Please see Figure 14 , Figure 14 for Figure 11 The diagram shows a detailed illustration of the antenna assembly. The first radiating stub 110 extends along a first direction D1. The second radiating stub 120 includes a first radiating portion 120a and a second radiating portion 120b. The first radiating portion 120a is connected to the first radiating stub 110 and extends along the first direction D1. The second radiating portion 120b is bent and connected to the first radiating portion 120a, and extends along a second direction D2, wherein the second direction D2 is different from the first direction D1.

[0101] In this embodiment, the first direction D1 is longitudinal, and the second direction D2 is transverse. When the antenna assembly 10 is applied to the electronic device 1, the first direction D1 is the extension direction of the long side of the electronic device 1, and the second direction D2 is the extension direction of the short side of the electronic device 1.

[0102] As can be seen from the foregoing description, in the antenna assembly 10 provided in this embodiment, the first radiating stub 110 supports the first frequency band, and the second radiating stub 120 also supports the first frequency band. Therefore, the antenna assembly 10 has good communication performance in the first frequency band. Furthermore, the first radiating stub 110 extends along a first direction D1. The second radiating stub 120 includes a first radiating portion 120a and a second radiating portion 120b. The first radiating portion 120a is connected to the first radiating stub 110, and the first radiating portion 120a extends along the first direction D1. The second radiating part 120b is bent and connected to the first radiating part 120a, and the second radiating part 120b extends along the second direction D2, wherein the second direction D2 is different from the first direction D1; therefore, the positions of the first radiating stub 110 and the second radiating stub 120 are different. Thus, the radiation pattern of the first radiating stub 110 supporting the first frequency band is different from the radiation pattern of the second radiating stub 120 supporting the first frequency band. Therefore, the antenna assembly 10 provided in this embodiment has good communication performance in multiple directions of the radiation pattern in the first frequency band.

[0103] Furthermore, when the antenna assembly 10 is applied in the electronic device 1, and the radiators 100 are all formed on the edge radiating branches of the metal frame 30, the radiators 100 can be set at the position of the junction of the long side and the short side of the frame body 310 of the frame 30 (also known as the R-corner position).

[0104] Please refer to the following: Figure 15 and Figure 16 , Figure 15 A schematic diagram of an antenna assembly provided in another embodiment of this application; Figure 16 One implementation method Figure 15 A schematic diagram of the circuit structure of the provided antenna assembly is shown. The antenna assembly 10 also includes a third tuning circuit 170. The third feed source S3 is connected in series with the third tuning circuit 170 to the third feed point P3, and the third tuning circuit 170 is a tuning circuit for the first frequency band and the fourth frequency band.

[0105] The antenna assembly 10 further includes a third tuning circuit 170, which is used to tune the first frequency band and the fourth frequency band, so that the first frequency band and the fourth frequency band of the antenna assembly 10 operate in the required frequency band.

[0106] Furthermore, the third tuning circuit 170 is also used to match the output impedance of the third feed S3 and the input impedance of the second radiating stub 120, thereby enabling the second radiating stub 120 to have better antenna performance when supporting the first frequency band. Correspondingly, the third tuning circuit 170 is also used to match the output impedance of the third feed S3 and the input impedance of the second radiating stub 120, thereby enabling the second radiating stub 120 to have better antenna performance when supporting the fourth frequency band.

[0107] Please see Figure 16 The third tuning circuit 170 includes a fifth capacitor C25 and a sixth capacitor C26. One end of the fifth capacitor C25 is electrically connected to the third feed source. One end of the sixth capacitor C26 is electrically connected to the other end of the fifth capacitor C25, and the other end of the sixth capacitor C26 is electrically connected to the third feed point P3.

[0108] The third tuning circuit 170 provided in this application includes a fifth capacitor C25 and a sixth capacitor C26, which can better tune the first frequency band and the fourth frequency band, so that the first frequency band and the fourth frequency band of the antenna assembly 10 operate in the required frequency band.

[0109] Furthermore, the third tuning circuit 170, including the fifth capacitor C25 and the sixth capacitor C26, can effectively match the output impedance of the third feed S3 and the input impedance of the second radiating stub 120, thereby enabling the second radiating stub 120 to have better antenna performance when supporting the first frequency band. Correspondingly, the third tuning circuit 170, including the fifth capacitor C25 and the sixth capacitor C26, can also effectively match the output impedance of the third feed S3 and the input impedance of the second radiating stub 120, thereby enabling the second radiating stub 120 to have better antenna performance when supporting the fourth frequency band.

[0110] It should be noted that the third tuning circuit 170 of this application includes a fifth capacitor C25 and a sixth capacitor C26, and appropriate capacitance values ​​for the fifth capacitor C25 and the sixth capacitor C26 can be easily selected. It is understood that in other embodiments, the third tuning circuit 170 may include a single capacitor, the capacitance of which is equivalent to the sum of the capacitance values ​​of the fifth capacitor C25 and the sixth capacitor C26.

[0111] Further, please refer to Figure 15The antenna assembly 10 further includes a filter circuit 180. One end of the filter circuit 180 is electrically connected to the third feed point P3, and the other end of the filter circuit 180 is grounded, used to filter out other frequency bands supported by other antennas around the antenna assembly 10.

[0112] The antenna assembly 10 further includes a filter circuit 180, which filters out other frequency bands supported by other antennas around the antenna assembly 10, thereby reducing or even avoiding interference from other frequency bands supported by other antennas around the antenna assembly 10 to the frequency bands supported by the antenna assembly 10.

[0113] Please refer to further information. Figure 16 The filter circuit 180 includes a third filter inductor L13 and a third filter capacitor C13. One end of the third filter inductor L13 is electrically connected to the third feed point P3. One end of the third filter capacitor C13 is electrically connected to the other end of the third filter inductor L13, and the other end of the third filter capacitor C13 is grounded.

[0114] The antenna assembly 10 provided in this application includes a filtering circuit 180 comprising a third filtering inductor L13 and a third filtering capacitor C13. The third filtering inductor L13 and the third filtering capacitor C13 work together to filter out other frequency bands supported by other antennas around the antenna assembly 10, thereby reducing or even avoiding interference from other frequency bands supported by other antennas around the antenna assembly 10 to the frequency bands supported by the antenna assembly 10.

[0115] Furthermore, the filtering circuit 180 of the antenna assembly 10 provided in this application includes a third filtering inductor L13 and a third filtering capacitor C13, and its structure is simple and easy to implement.

[0116] The performance of the antenna assembly 10 provided in the embodiments of this application will be simulated and explained next.

[0117] Please refer to the following: Figure 15 And see Figure 17 , Figure 17 This is a schematic diagram showing the dimensions of the radiator in an antenna assembly according to one embodiment of this application. It should be understood that the dimensions of various parts of the radiator 100 shown in this schematic diagram are merely dimensional illustrations for one embodiment and should not be construed as limiting the antenna assembly 10 provided in this application. The total length of the radiator 100 in the antenna assembly 10 provided in this application is approximately 40 mm (specifically 39.1 mm), which is relatively small. Therefore, the antenna assembly 10 provided in this application has a smaller size; that is, this application achieves miniaturization of the antenna assembly 10.

[0118] Please refer to the following:Figure 18 , Figure 19 and Figure 20 , Figure 18 Simulation curves of antenna efficiency when the first feed source in the antenna assembly provided in an embodiment of this application excites the first frequency band and the second frequency band; Figure 19 Simulation curve of antenna efficiency in the third frequency band when the second feed source in the antenna assembly provided in an embodiment of this application is excited; Figure 20 Simulation curves of antenna efficiency when the third feed source in the antenna assembly provided in one embodiment of this application excites the first and fourth frequency bands. For ease of illustration, in Figure 18 to Figure 20 Each image includes (a) and (b), where (a) is a color image and (b) is a grayscale version of (a) from the same image. Figure 18 to Figure 20 In the figure, the horizontal axis represents frequency in GHz, and the vertical axis represents efficiency in dB. The simulation uses the N78 band as the first frequency band, the WiFi 2.4G band as the second frequency band, the B28 RX band (a low-frequency band, often referred to as the LB) receiver band, and the GPS L1 band as the fourth frequency band. The N78 band has a frequency of 3300MHz–3800MHz, the WiFi 2.4G band has a frequency of 2400MHz–2480MHz, the B28 RX band has a frequency of 758MHz–803MHz, and the GPS L1 band has a center frequency of 1575MHz. Figure 18 In the middle, curve ① ( Figure 18 (a) The light green curve in the figure represents the radiation efficiency curves when the first feed S1 excites the first and second frequency bands; Curve ② ( Figure 18 (a) The dark green curve in the figure represents the system radiation efficiency curves when the first feed S1 excites the first and second frequency bands; curve ③ ( Figure 18 The blue curve in (a) is the system total efficiency curve when the first feed S1 excites the first and second frequency bands.

[0119] exist Figure 19 In the middle, curve ① ( Figure 19 The black curve in (a) is the radiation efficiency curve of the third frequency band when the second feed S2 in antenna assembly 10 is excited; curve ② ( Figure 19 The red curve in (a) represents the system radiation efficiency curve in the third frequency band when the second feed S2 in antenna assembly 10 is excited; curve ③ ( Figure 19The blue curve in (a) is the system total efficiency curve when the second feed S2 in the antenna assembly 10 is excited in the third frequency band.

[0120] exist Figure 20 In the middle, curve ① ( Figure 20 The brown curve in (a) is the system radiation efficiency curve for the third frequency band excited by the second feed S2 in antenna assembly 10; curve ② ( Figure 20 The black curve in (a) is the system total efficiency curve when the second feed S2 in the antenna assembly 10 is excited in the third frequency band.

[0121] Taking the first frequency band as N78, the second frequency band as WiFi 2.4G, the third frequency band as the receiving band (RX) of the B28 frequency band in the low frequency band (LB), and the fourth frequency band as GPS L1 as an example: From Figure 18 to Figure 20 It can be seen that the peak radiation efficiency of the third frequency band is -12dBm, the peak radiation efficiency of the second frequency band is -5dBm; the peak radiation efficiency of the first frequency band excited by the first feed S1 is -4.2dBm; the peak efficiency of the fourth frequency band is -3dBm; and the peak efficiency of the first frequency band excited by the third feed S3 is -3.7dBm. Therefore, it is evident that the antenna assembly 10 meets the performance specifications in the first, second, third, and fourth frequency bands.

[0122] In summary, the antenna assembly 10 provided in one embodiment of this application includes a bandpass circuit 140. One end of the bandpass circuit 140 is electrically connected to the second feed point P2, and the other end is grounded. The bandpass circuit 140 is used to transmit at least one of the first frequency band and the second frequency band. Therefore, the antenna assembly 10 provided in this embodiment of the application includes a bandpass circuit 140. Due to the function of the bandpass circuit 140, the second feed point P2 is multiplexed as the return point for both the first and second frequency bands. Therefore, the first feed source S1 can effectively excite the first radiating stub 110 to support both the first and second frequency bands, thereby realizing the communication functions of the first and second frequency bands.

[0123] The antenna assembly 10 further includes a band-stop circuit 130 connected between the first feed source S1 and the first feed point P1. The band-stop circuit 130 is used to block the third frequency band. Therefore, the antenna assembly 10 provided in this application includes a band-stop circuit 130. Due to the function of the band-stop circuit 130, the first feed point P1 is multiplexed as the open-circuit point of the third frequency band, thereby enabling the first radiating stub 110 to better support the third frequency band.

[0124] When the first frequency band is the N78 band and the second frequency band is the WiFi 2.4G band, when searching for the receiving band (RX) of the B28 band in the LB band, it can also be said that the feed point of the LB B28RX band (i.e., the second feed point P2) is reused as the return point of at least one of the WiFi 2.4G band and the N78 band through the action of the bandpass circuit 140. The feed point of the N78 band + WiFi 2.4G band (i.e., the first feed point P1) is reused as the open point of the LB B28RX band. It can be seen that the antenna assembly 10 provided in this application embodiment allows the first frequency band, the second frequency band and the third frequency band to share the same first radiating stub 110. Compared with the related technology where one frequency band uses one radiating stub, the antenna assembly 10 provided in this application embodiment has a smaller size in which the first frequency band, the second frequency band and the third frequency band share the same first radiating stub 110.

[0125] In addition, in one embodiment, the second grounding terminal 121 is connected to the first grounding terminal 112 and is an integral structure, and the second grounding terminal 121 and the first grounding terminal 112 are grounded through the same grounding component 190, thereby enabling the first frequency band supported by the first radiating stub 110 and the first frequency band supported by the second radiating stub 120 to have a better degree of isolation.

[0126] The antenna assembly 10 provided in this application supports the first frequency band (such as the N78 band) through a first radiating stub 110 and a second radiating stub 120, thereby enhancing the directivity of the first frequency band. In one embodiment, when the antenna assembly 10 is applied to an electronic device 1, the first radiating stub 110 is disposed at the waist of the long side of the electronic device 1, and the second radiating stub 120 is disposed at the short top side of the electronic device 1. Therefore, it is also referred to as disposing the stubs supporting the first frequency band at the top and waist.

[0127] In one embodiment, the frequency bands supported by the antenna assembly 10, from low to high, are a third frequency band (e.g., B28 band), a fourth frequency band (e.g., GPS L1 band), a second frequency band (e.g., WiFi 2.4G band), and a first frequency band (e.g., N78 band). The fourth frequency band is placed together with one of the first frequency bands, that is, the third feed S3 excites the second radiating stub 120 to support both the first and fourth frequency bands. Since the frequencies supported by the antenna assembly 10, from low to high, are the third frequency band (e.g., B28 band), the fourth frequency band (e.g., GPS L1 band), the second frequency band (e.g., WiFi 2.4G band), and the first frequency band (e.g., N78 band), the fourth frequency band and the first frequency band are two adjacent frequency bands, and the frequency difference between the fourth frequency band and the first frequency band is relatively large (also referred to as the frequency bands being far apart), the second radiating stub 120 can provide good isolation between the fourth frequency band and the first frequency band when supporting the fourth frequency band and the first frequency band. Furthermore, the frequency difference between the third frequency band and the second frequency band is large, and the frequency difference between the third frequency band and the first frequency band is also large. Therefore, by using the first radiating stub 110 to support the third frequency band, and also to support the first and second frequency bands, the isolation between the third frequency band and the second frequency band is good, and the isolation between the third frequency band and the first frequency band is also good. In this embodiment, also known as the frequency band cross-layout approach, the isolation problem between different frequency bands can be effectively solved by arranging the frequency bands differently, resulting in better isolation between them. In other words, the antenna assembly 10 provided in this application improves the isolation between different frequency bands through frequency cross-layout, so that the antenna assembly 10 can maintain good antenna performance for each supported frequency band while being miniaturized. That is, it achieves miniaturized design of multi-band antennas.

[0128] In summary, the antenna assembly 10 provided in one embodiment of this application, through reasonable design of each feed point (first feed point P1, second feed point P2, and third feed point P3) and grounding terminal (first grounding terminal 112 and second grounding terminal 121), combined with various tuning circuits (first tuning circuit 150, second tuning circuit 160, and third tuning circuit 170), band-stop circuit 130, band-pass circuit 140, filter circuit 180, etc., enables the design of an antenna scheme integrating dual first frequency bands (e.g., N78 band), second frequency bands (e.g., WiFi 2.4G band), third frequency bands (e.g., RX band of B28 band of LB band), and fourth frequency bands (GPS L1 band) on a relatively short (e.g., 39.1mm) radiator 100. Thus, without the need to add a combiner, four different communication standard antenna operating frequency bands are integrated on a frame portion with a total length of only about 40mm at the R-corner position of the same frame radiator.

[0129] When the antenna assembly 10 in related technologies supports the LB band, it originally required a relatively long size (e.g., 70mm). Therefore, compared to the prior art, the size of the radiator 100 of the antenna assembly 10 provided in this application embodiment is reduced by 57%. The antenna assembly 10 provided in this application embodiment achieves miniaturization of the radiator 100, thereby achieving miniaturization of the antenna assembly 10. This provides more options for integrating the radiator 100 of the antenna assembly 10 into the frame portion 320 of the mid-frame 30 of the electronic device 1 when the antenna assembly 10 is applied to the electronic device 1 (e.g., a mobile phone).

[0130] In the antenna assembly 10 provided in the above embodiments, the first frequency band supported by the antenna assembly 10 is the N78 band, the second frequency band is the WiFi 2.4G band, the third frequency band is the B28 band, and the fourth frequency band is the GPS L1 band. This is merely an example. It is understood that in other embodiments, the first frequency band supported by the antenna assembly 10 is the N78 band, the second frequency band is the WiFi 2.4G band, the third frequency band is the B28 band, and the fourth frequency band is the GPS L5 band. In other words, compared to the previous embodiments, in other embodiments, the GPS L1 band in the antenna assembly 10 provided in the previous embodiments is replaced with the GPS L5 band. It is understood that in another embodiment, the B28 band can be replaced with the GPS L5 band, that is, the first frequency band supported by the antenna assembly 10 is the N78 band, the second frequency band is the WiFi 2.4G band, the third frequency band is the GPS L5 band, and the fourth frequency band is the GPS L1 band.

[0131] Understandably, in other embodiments, either the B28 band or the GPS L1 band can be replaced with a lower frequency band of another cellular band. The antenna assembly 10 supports a variety of frequency band combinations, and the problem of isolation between the various frequency bands can be effectively solved as long as the frequency band cross-layout is followed during layout.

[0132] This application also provides an electronic device 1 according to one embodiment. The electronic device 1 includes, but is not limited to, devices capable of transmitting and receiving electromagnetic wave signals such as mobile phones, telephones, televisions, tablets, personal computers, laptops (PCs), in-vehicle devices, headphones, watches, and wearable devices. In the schematic diagrams of this application embodiment, a mobile phone is used as an example for illustration; it should be understood that this should not be construed as a limitation on the electronic device 1 provided in this application embodiment. Please refer to... Figure 21 and Figure 22 , Figure 21 A schematic diagram of an electronic device provided according to one embodiment of this application; Figure 22 for Figure 21 The diagram shows a partial structural schematic of the electronic device 1. The electronic device 1 includes an antenna assembly 10. The antenna assembly 10 has been described previously and will not be repeated here.

[0133] Furthermore, in one embodiment, the electronic device 1 further includes a mid-frame 30. The mid-frame 30 includes a frame body 310 and a side frame portion 320. The frame body 310 serves as the ground electrode in the electronic device 1. The side frame portion 320 is bent and connected to the periphery of the frame body 310. The first radiating branch 110 and the second radiating branch 120 of the antenna assembly 10 are formed in the side frame portion 320.

[0134] Furthermore, in one embodiment, the electronic device 1 further includes a display screen 50 and a battery cover 70. The screen and the battery cover 70 are respectively disposed on opposite sides of the mid-frame 30. It is understood that the electronic device 1 described in this application embodiment is merely a description of one application environment of the antenna assembly 10 and should not be construed as a limitation on the antenna assembly 10 provided in this application embodiment.

[0135] Furthermore, in one embodiment, the electronic device 1 has a first side 1a and a second side 1b that are bent and connected together. The length of the second side 1b is less than the length of the first side 1a. The first radiating branch 110 of the radiator 100 is disposed corresponding to the first side 1a.

[0136] The first side 1a is the long side of the electronic device 1, and the second side 1b is the short side of the electronic device 1. The first radiating branch 110 of the radiator 100 is disposed corresponding to the first side 1a; in other words, the first radiating branch 110 is disposed corresponding to the long side of the electronic device 1. When the first radiating branch 110 is disposed corresponding to the long side of the ground electrode, the third resonant mode can excite the current on the ground electrode to a greater extent, which is equivalent to increasing the antenna wavelength excited by the original frame portion 320 size, thereby enabling the antenna assembly 10 to be further miniaturized.

[0137] Furthermore, the electronic device 1 also has a third side 1c, which is bent and connected to the first side 1a. The third side 1c is disposed opposite to the second side 1b, and both the third side 1c and the second side 1b are located on the same side of the first side 1a. When the electronic device 1 is in portrait mode, the first side 1a is located on the side of the electronic device 1, the second side 1b is located on the top of the electronic device 1, and the third side 1c is located on the bottom of the electronic device 1. The first radiating branch 110 is disposed at the end of the first side 1a opposite to the third side 1c.

[0138] In this embodiment, the first side 1a is the long side of the electronic device 1, the second side 1b is the short side of the electronic device 1, and the third side 1c is the short side of the electronic device 1. When the electronic device 1 is in portrait mode, the first side 1a is located on the side of the electronic device 1, the second side 1b is located on the top of the electronic device 1, and the third side 1c is located on the bottom of the electronic device 1. The first radiating branch 110 is disposed on the side of the first side 1a away from the third side 1c. That is, the first radiating branch 110 is disposed on the long side of the electronic device 1 near the top. Therefore, when the electronic device 1 is in portrait mode, the first radiating branch 110 is not easily blocked, thereby enabling the antenna assembly 10 to have better communication performance using the various frequency bands supported by the first radiating branch 110.

[0139] Furthermore, in one embodiment, the antenna assembly 10 further includes a second radiating stub 120, which is disposed corresponding to the second side 1b; or, a portion of the second radiating stub 120 is disposed corresponding to the first side 1a and the remaining portion of the second radiating stub 120 is disposed corresponding to the second side 1b. Thus, when the electronic device 1 is in portrait mode, the second radiating stub 120 is positioned at the top of the electronic device 1, thereby enabling the antenna assembly 10 to have better communication performance when communicating using the first frequency band and the fourth frequency band supported by the second radiating stub 120.

[0140] In one embodiment, the first radiating branch 110 is disposed at the end of the first side 1a away from the third side 1c. When the second radiating branch 120 includes a first radiating part 120a and a second radiating part 120b, the first radiating part 120a is disposed corresponding to the first side 1a, and the second radiating part 120b is disposed corresponding to the second side 1b. Thus, when the electronic device 1 is in portrait mode, both the first radiating branch 110 and the second radiating branch 120 are disposed at the top of the electronic device 1, making it less likely to be blocked by the user's hand when holding the electronic device 1 in portrait mode, thereby enabling the antenna assembly 10 to have better antenna performance in the supported frequency bands.

[0141] The above description represents some embodiments of this application. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this application, and these improvements and modifications are also considered to be within the scope of protection of this application.

Claims

1. An antenna assembly, characterized in that, The antenna assembly includes: The radiator includes a first radiating branch, which includes a first free end, a first feed point, a second feed point, and a first grounding end arranged sequentially, and the first grounding end is grounded. A first feed source is electrically connected to the first feed point to excite the first radiating stub to support a first frequency band and a second frequency band, wherein the frequency of the second frequency band is lower than the frequency of the first frequency band. A second feed source is electrically connected to a second feed point to excite the first radiating stub to support a third frequency band, the frequency of which is less than the frequency of the second frequency band. A band-stop circuit is connected between the first feed source and the first feed point, the band-stop circuit being used to block the third frequency band; and A bandpass circuit, one end of which is electrically connected to the second feed point and the other end is grounded, is used to pass through at least one of the first frequency band and the second frequency band.

2. The antenna assembly as claimed in claim 1, characterized in that, The band-stop circuit includes: A first filter inductor, one end of which is electrically connected to the first feed source, and the other end of which is electrically connected to the first feed point; and The first filter capacitor is connected in parallel with the first filter inductor.

3. The antenna assembly as described in claim 2, characterized in that, The antenna assembly also includes: A first tuning circuit is electrically connected between the band-stop circuit and the first feed source. The first tuning circuit is a tuning circuit for the first frequency band and the second frequency band.

4. The antenna assembly as described in claim 3, characterized in that, The first tuning circuit includes: A first capacitor, one end of which is electrically connected to the first feed source, and the other end of which is grounded; A first inductor, one end of which is connected to one end of the first capacitor; A second capacitor, one end of which is connected to the other end of the first inductor, and the other end of which is connected to the first end of the first filter inductor; and The second inductor has one end connected to the first end of the filter inductor and the other end grounded.

5. The antenna assembly as described in any one of claims 1-4, characterized in that, The bandpass circuit includes: The second filter inductor, and one end of the second filter capacitor is electrically connected to the second feed point; and The second filter capacitor has one end electrically connected to the other end of the second filter inductor, and the other end of the second filter capacitor is grounded.

6. The antenna assembly as claimed in claim 5, characterized in that, The antenna assembly also includes: The second tuning circuit is electrically connected between the bandpass circuit and the second feed source, and the second tuning circuit is the tuning circuit for the third frequency band.

7. The antenna assembly as claimed in claim 6, characterized in that, The second tuning circuit includes: A third capacitor, one end of which is electrically connected to a second feed source, and the other end of which is electrically connected to the second feed point; and The fourth capacitor has one end electrically connected to the second feed point and the other end grounded.

8. The antenna assembly as claimed in claim 1, characterized in that, The first feed source excites the first resonant mode of the first radiating stub to support the first frequency band, wherein the first resonant mode is a quarter-wavelength mode from the first feed point to the first free end. The first feed source excites the second resonant mode of the first radiating stub to support the second frequency band, wherein the second resonant mode is a quarter-wavelength mode from the second feed point to the first free end.

9. The antenna assembly as claimed in claim 1, characterized in that, The second feed excites the third resonant mode of the first radiating stub to support the third frequency band, wherein the third resonant mode is a quarter-wavelength mode from the first ground terminal to the first free terminal.

10. The antenna assembly as claimed in claim 1, characterized in that, The radiator also includes: The second radiating branch is an integral structure with the first radiating branch. The second radiating branch has a second grounding terminal, a third feed point and a second free terminal arranged in sequence. The second grounding terminal is connected to the first grounding terminal and is an integral structure. The second grounding terminal is grounded. A third feed source is electrically connected to the third feed point to excite the second radiating stub to support the first frequency band and the fourth frequency band, wherein the frequency of the fourth frequency band is lower than the frequency of the second frequency band and the frequency of the fourth frequency band is higher than the frequency of the third frequency band.

11. The antenna assembly as claimed in claim 10, characterized in that, The third feed source excites the fourth resonant mode to support the fourth frequency band, wherein the fourth resonant mode is a quarter-wavelength mode from the second ground terminal to the second free terminal; The third feed source excites the fifth resonant mode to support the first frequency band, wherein the fifth resonant mode is a quarter-wavelength mode from the third feed point to the second free end.

12. The antenna assembly as claimed in claim 10, characterized in that, The second grounding terminal is connected to the first grounding terminal and is an integral structure, and the second grounding terminal and the first grounding terminal are grounded through the same grounding component.

13. The antenna assembly as claimed in claim 10, characterized in that, The first radiating branch extends along the first direction; The second radiating branch includes: A first radiating portion, the first radiating portion being connected to the first radiating branch, and the first radiating portion extending along the first direction; and The second radiating part is bent and connected to the first radiating part, and the second radiating part extends along a second direction, wherein the second direction is different from the first direction.

14. The antenna assembly as claimed in claim 10, characterized in that, The antenna assembly also includes: The third tuning circuit is connected in series with the third feed source to the third feed point. The third tuning circuit is the tuning circuit for the first frequency band and the fourth frequency band.

15. The antenna assembly as claimed in claim 14, characterized in that, The third tuning circuit includes: A fifth capacitor, one end of which is electrically connected to the third feed source; and A sixth capacitor, one end of which is electrically connected to the other end of the fifth capacitor, and the other end of which is electrically connected to the third feed point.

16. The antenna assembly as claimed in claim 10, characterized in that, The antenna assembly also includes: A filtering circuit, one end of which is electrically connected to the third feed point and the other end of which is grounded, is used to filter out other frequency bands supported by other antennas around the antenna assembly.

17. The antenna assembly as claimed in claim 16, characterized in that, The filtering circuit includes: A third filter inductor, one end of which is electrically connected to the third feed point; and The third filter capacitor has one end electrically connected to the other end of the third filter inductor, and the other end of the third filter capacitor is grounded.

18. An electronic device, characterized in that, The electronic device includes an antenna assembly as described in any one of claims 1-17.

19. The electronic device as claimed in claim 18, characterized in that, The electronic device has a first side and a second side that are bent and connected together, wherein the length of the second side is less than the length of the first side; The first radiating branch of the radiator is provided corresponding to the first side.

20. The electronic device as claimed in claim 19, characterized in that, The electronic device also has a third side, which is bent and connected to the first side. The third side is arranged opposite to the second side, and both the third side and the second side are located on the same side of the first side. When the electronic device is in portrait mode, the first side is located at the top of the electronic device, and the second side is located at the bottom of the electronic device. The first radiating branch is located at the end of the first side that is away from the third side.

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