CN112838370B

CN112838370B - Antenna assembly and electronic equipment

Info

Publication number: CN112838370B
Application number: CN202110223348.7A
Authority: CN
Inventors: 吴小浦
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2020-09-30
Filing date: 2021-02-26
Publication date: 2024-02-09
Anticipated expiration: 2041-02-26
Also published as: CN112838370A; CN112086752A; WO2022068827A1

Abstract

The application provides an antenna assembly and electronic equipment. The antenna assembly includes a first antenna. The first radiator comprises a first grounding end and a first free end. A first feed point and a connection point are arranged between the first grounding end and the first free end. The first radiator is electrically connected to the first signal source at a first feed point, and the first radiator is also electrically connected to the bandpass filter circuit to ground at a connection point. The first signal source is used for providing an excitation signal of a first frequency band, the excitation signal of the first frequency band is used for exciting the first radiator to generate a first resonance mode, and resonance current of the first resonance mode is distributed between the first grounding end and the first free end. The first signal source is also used for providing an excitation signal of a second frequency band, and the excitation signal of the second frequency band is used for exciting the first radiator to generate a second resonance mode, and the resonance current of the second resonance mode is distributed between the band-pass filter circuit and the first free end. The antenna assembly has a good communication effect.

Description

Antenna assembly and electronic equipment

Technical Field

The present application relates to the field of communications technologies, and in particular, to an antenna assembly and an electronic device.

Background

With the development of technology, electronic devices such as mobile phones with communication functions have become more and more popular and more powerful. An antenna assembly is typically included in an electronic device to enable communication functions of the electronic device. However, the communication performance of the antenna assembly in the electronic device in the related art is not good enough, and there is room for improvement.

Disclosure of Invention

In a first aspect, the present application provides an antenna assembly. The antenna assembly includes:

the first antenna comprises a first radiator, a first signal source and a band-pass filter circuit, wherein the first radiator comprises a first grounding end and a first free end, a first feed point and a connection point are arranged between the first grounding end and the first free end, the first radiator is electrically connected with the first signal source at the first feed point, and the first radiator is further electrically connected with the band-pass filter circuit to the ground at the connection point;

the first signal source is used for providing an excitation signal of a first frequency band, the excitation signal of the first frequency band is used for exciting the first radiator to generate a first resonance mode, and resonance current of the first resonance mode is distributed between the first grounding end and the first free end;

The first signal source is also used for providing an excitation signal of a second frequency band, the excitation signal of the second frequency band is used for exciting the first radiator to generate a second resonance mode, and the resonance current of the second resonance mode is distributed between the band-pass filter circuit and the first free end.

In a second aspect, the present application also provides an electronic device comprising an antenna assembly according to the first aspect.

The first antenna in the antenna assembly can not only transmit and receive electromagnetic wave signals of the first frequency band, but also transmit and receive electromagnetic wave signals of the second frequency band, so that the antenna assembly has a good communication effect.

Drawings

In order to more clearly illustrate the technical solutions of the examples of the present application, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic diagram of a first antenna assembly according to an embodiment of the present disclosure;

fig. 2 is a schematic diagram of a second antenna assembly according to an embodiment of the present disclosure;

Fig. 3 is a graph of a partial callback loss of the antenna assembly of fig. 1 or 2;

fig. 4 is a schematic structural diagram of an electronic device provided in the present application;

FIG. 5 is a cross-sectional view of the electronic device shown in FIG. 4 along line I-I;

fig. 6 is a schematic structural diagram of a first band-pass filter circuit of the antenna assembly provided in the present application;

fig. 7 is a schematic structural diagram of a second band-pass filter circuit of the antenna assembly provided in the present application;

fig. 8 is a schematic structural diagram of a third band-pass filter circuit of the antenna assembly provided in the present application;

fig. 9 is a schematic structural diagram of a fourth band-pass filter circuit of the antenna assembly provided in the present application;

fig. 10 is a callback loss curve of the antenna assembly of fig. 1 or 2;

fig. 11a is a schematic diagram of a current distribution of the antenna assembly shown in fig. 2 in a first resonant mode;

FIG. 11b is a schematic diagram of the current distribution of the antenna assembly of FIG. 2 in a second resonant mode;

FIG. 11c is a schematic view of the current distribution of the antenna assembly of FIG. 2 in a third resonant mode;

FIG. 11d is a schematic diagram of a current distribution of the antenna assembly shown in FIG. 2 in a fourth resonant mode;

fig. 12 is a schematic structural diagram of a third antenna assembly according to an embodiment of the present disclosure;

fig. 13 is a callback loss curve of the antenna assembly shown in fig. 12;

Fig. 14a is a schematic view of a current distribution of the antenna assembly of fig. 13 in a first resonant mode;

fig. 14b is a schematic view of the current distribution of the antenna assembly of fig. 13 in a second resonant mode;

fig. 14c is a schematic view of the current distribution of the antenna assembly of fig. 13 in a third resonant mode;

fig. 14d is a schematic view of a current distribution of the antenna assembly shown in fig. 13 in a seventh resonant mode;

fig. 14e is a schematic view of a current distribution of the antenna assembly shown in fig. 13 in a fifth resonant mode;

fig. 14f is a schematic view of a current distribution of the antenna assembly of fig. 13 in a sixth resonant mode;

fig. 15 is a schematic view of a third antenna assembly according to an embodiment of the present disclosure;

fig. 16 is a schematic diagram of a fourth antenna assembly according to an embodiment of the present disclosure;

fig. 17 is a schematic diagram of a fifth antenna assembly according to an embodiment of the present disclosure;

fig. 18 is a schematic diagram of a sixth antenna assembly according to an embodiment of the present disclosure;

fig. 19 is a schematic view of a seventh antenna assembly according to an embodiment of the present disclosure;

FIG. 20a is a schematic diagram of a first seed isolation circuit provided in an embodiment of the present application;

FIG. 20b is a schematic diagram of a second seed isolation circuit provided in an embodiment of the present application;

FIG. 20c is a schematic diagram of a third seed isolation circuit provided in an embodiment of the present application;

FIG. 20d is a schematic diagram of a fourth seed isolation circuit provided in an embodiment of the present application;

FIG. 20e is a schematic diagram of a fifth seed isolation circuit provided in an embodiment of the present application;

FIG. 20f is a schematic diagram of a sixth seed isolation circuit provided in an embodiment of the present application;

FIG. 20g is a schematic diagram of a seventh seed isolation circuit provided in an embodiment of the present application;

FIG. 20h is a schematic diagram of an eighth seed isolation circuit provided in an embodiment of the present application;

FIG. 21 is a schematic diagram of a first isolation circuit provided in an embodiment of the present application;

FIG. 22 is a schematic diagram of a second isolation circuit provided in an embodiment of the present application;

fig. 23 is a schematic view of an eighth antenna assembly provided in an embodiment of the present application;

fig. 24 is a schematic diagram of feeding points of a first radiator and a second radiator in an antenna assembly according to an embodiment of the present disclosure;

fig. 25 is a schematic view illustrating a gap between a first radiator and a second radiator in an antenna assembly according to an embodiment of the present disclosure;

FIG. 26 is a schematic diagram of a RL curve of the first antenna and the second antenna of the antenna assembly shown in FIG. 1;

fig. 27 is a schematic diagram of main current distribution corresponding to a first resonant mode in the antenna assembly shown in fig. 1;

fig. 28 is a schematic diagram of main current distribution corresponding to a second resonance mode in the antenna assembly shown in fig. 1;

Fig. 29 is a schematic diagram of main current distribution corresponding to a third resonance mode in the antenna assembly shown in fig. 1;

fig. 30 is a schematic diagram of main current distribution corresponding to a fifth resonant mode in the antenna assembly shown in fig. 1;

fig. 31 is a schematic diagram of main current distribution corresponding to a sixth resonant mode in the antenna assembly shown in fig. 1;

FIG. 32 is a schematic diagram of RL curves of the first antenna and the second antenna in the antenna assembly shown in FIG. 18;

fig. 33 is a schematic diagram of main current distribution corresponding to a first resonant mode in the antenna assembly shown in fig. 18;

fig. 34 is a schematic diagram of main current distribution corresponding to a second resonance mode in the antenna assembly shown in fig. 18;

fig. 35 is a schematic diagram of main current distribution corresponding to a third resonance mode in the antenna assembly shown in fig. 18;

fig. 36 is a schematic diagram of a main current distribution corresponding to a seventh resonant mode in the antenna assembly shown in fig. 18;

fig. 37 is a schematic diagram of main current distribution corresponding to an eighth resonance mode in the antenna assembly shown in fig. 18;

fig. 38 is a schematic diagram of main current distribution corresponding to a sixth resonant mode in the antenna assembly shown in fig. 18;

fig. 39 is a schematic structural diagram of a ninth antenna assembly according to an embodiment of the present disclosure;

fig. 40 is a schematic structural diagram of a tenth antenna assembly according to an embodiment of the present disclosure;

Fig. 41 is a schematic structural diagram of an eleventh antenna assembly according to an embodiment of the present disclosure;

fig. 42 is a schematic structural diagram of an antenna assembly connection ground provided in an embodiment of the present application;

fig. 43 is a schematic structural diagram of another antenna assembly connection ground provided in an embodiment of the present application;

fig. 44 is a schematic diagram of a position of a first metal branch and a second metal branch in an electronic device according to an embodiment of the present application;

fig. 45 is a schematic diagram of positions of a first radiator and a second radiator in an electronic device according to an embodiment of the present application.

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without undue burden, are within the scope of the present application.

Reference herein to "an embodiment" or "an implementation" means that a particular feature, structure, or characteristic described in connection with the embodiment or implementation may be included in at least one embodiment of the present application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

The present application provides an antenna assembly 10. The antenna assembly 10 is applicable in an electronic device 1. The electronic device 1 includes, but is not limited to, an electronic device 1 having a communication function such as a mobile phone, an internet device (mobile internet device, MID), an electronic book, a portable player station (Play Station Portable, PSP), or a personal digital assistant (Personal Digital Assistant, PDA).

Referring to fig. 1, fig. 1 is a schematic diagram of an antenna assembly according to an embodiment of the present application. The antenna assembly 10 includes a first antenna 110. The first antenna 110 includes a first radiator 111, a first signal source 112, and a Band Pass Filter (BPF) 114. The first radiator 111 includes a first ground terminal G1 and a first free terminal F1, and a first feeding point P1 and a connection point P3 are disposed between the first ground terminal G1 and the first free terminal F1. The first ground terminal G1 is connected to the ground GND2, the first radiator 111 is electrically connected to the first signal source 112 at the first feeding point P1, and the first radiator 111 is further electrically connected to the band-pass filter circuit 114 to the ground GND1 at the connection point P3. The first signal source 112 is configured to provide an excitation signal in a first frequency band, where the excitation signal in the first frequency band is configured to excite the first radiator 111 to generate a first resonant mode, and a resonant current of the first resonant mode is distributed between the first ground terminal G1 and the first free terminal F1. The first signal source 112 is further configured to provide an excitation signal in a second frequency band, where the excitation signal in the second frequency band is used to excite the first radiator 111 to generate a second resonant mode, and a resonant current of the second resonant mode is distributed between the band-pass filter circuit 114 and the first free end F1.

In this application, the band-pass filter circuit 114 is used to tune the electrical length of the first radiator 111 when applied to the antenna assembly 10, so that the first radiator 111 generates at least a first resonant mode and a second resonant mode. The position where the band-pass filter circuit 114 is connected to the first radiator 111 is not particularly limited in this application.

Optionally, referring to fig. 1, the first ground G1 is spaced from the connection point P3. The connection point P3 is remote from the first free end F1 compared to the first feed point P1.

Optionally, referring to fig. 2, the first ground G1 and the connection point P3 are located at the same position. In the present embodiment, the band-pass filter circuit 114 is electrically connected to the first ground terminal G1, which corresponds to the band-pass filter circuit 114 directly connected to the antenna aperture by adding ground, and the length of the section P3 to G1 is reduced to 0, so that the length of the entire first radiator 111 is reduced, and the size of the entire antenna assembly 10 is smaller; in addition, in this embodiment, since the connection point P3 has no radiator for transmitting radio frequency signals on the side away from the first feeding point P1, the influence on the second frequency band transceiver is smaller, and the efficiency of the antenna assembly 10 in the second frequency band is improved; further, since the first ground G1 and the connection point P3 are combined in one position, the number of connectors, such as conductive spring plates, for connecting the radiator to other structures (such as the ground pole and the band-pass filter circuit) is reduced, and the mounting process of the antenna assembly 10 is simplified.

Furthermore, it should be noted that the terms "first," "second," and the like in the description and in the claims of the present application and in the foregoing figures are used for distinguishing between different objects and not for describing a particular sequential order. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion.

The first radiator 111 is a flexible circuit board (Flexible Printed Circuit, FPC) antenna radiator or a laser direct structuring (Laser Direct Structuring, LDS) antenna radiator or a printed direct structuring (Print Direct Structuring, PDS) antenna radiator or a metal stub; the second radiator 121 is an FPC antenna radiator, an LDS antenna radiator, a PDS antenna radiator, or a metal branch.

When the first radiator 111 is electrically connected to the band-pass filter circuit 114, the first antenna 110 may transmit and receive electromagnetic wave signals of a first frequency band, and may also transmit and receive electromagnetic wave signals of a second frequency band, wherein the first frequency band is different from the second frequency band. When the first radiator 111 is disconnected from the band-pass filter circuit 114, the first antenna 110 may transmit and receive electromagnetic wave signals of a first frequency band, but may not transmit and receive electromagnetic wave signals of a second frequency band. Therefore, due to the addition of the band-pass filter circuit 114, the first antenna 110 can transmit and receive the second frequency band which cannot be transmitted and received originally, so that the antenna assembly 10 can transmit and receive electromagnetic wave signals with more frequency bands, and further, the communication performance of the antenna assembly 10 is improved.

In one embodiment, referring to fig. 3, the first frequency band includes a GPS-L5 frequency band (the resonance frequency point is 1176 MHz), and the second frequency band includes a GPS-L1 frequency band (the resonance frequency point is 1575 MHz). It is understood that in other embodiments, the first frequency band and the second frequency band may be different from the GPS-L5 frequency band and the GPS-L1 frequency band. It should be noted that, the GPS in the GPS-L1 band and the GPS-L5 band mentioned herein means positioning, including but not limited to global positioning system (Global Positioning System, GPS) positioning, beidou positioning, global satellite navigation system (GLOBAL NAVIGATION SATELLITE SYSTEM, GLONASS), GALILEO satellite navigation system (Galileo satellite navigation system, GALILEO) positioning, and the like.

In the following embodiments, the first frequency band is exemplified as the GPS-L5 frequency band, and the second frequency band is exemplified as the GPS-L1 frequency band.

Referring to fig. 4 and 5, when the antenna assembly 10 is applied to the electronic device 1, the first signal source 112 may be disposed on the circuit board 50 of the electronic device 1. The second signal source 122 may also be provided on the circuit board 50 in the electronic device 1. The band-pass filter circuit 114 may be provided on the circuit board 50 in the electronic device 1.

The first signal source 112 is configured to generate an excitation signal in a first frequency band and an excitation signal in a second frequency band, where the excitation signal is loaded on the first radiator 111 to excite the first radiator 111 to generate a first resonant mode a; the excitation signal is loaded on the first radiator 111 to excite the first radiator 111 to generate a second resonant mode b, that is, to enable the first antenna 110 to transmit and receive electromagnetic wave signals of a first frequency band and a second frequency band.

In the related art, since the length of the antenna radiator corresponds to the frequency band supported by the antenna, the first antenna 110 can only transmit and receive electromagnetic wave signals of the first frequency band but not of the second frequency band, or the first antenna 110 can only transmit and receive electromagnetic wave signals of the second frequency band but not of the first frequency band, due to the limitation of the length of the antenna radiator. For example, when the first frequency band is the GPS-L5 frequency band and the second frequency band is the GPS-L1 frequency band, it is assumed that the physical length of the first radiator 111 is a product supporting the GPS-L1 frequency band, and the physical length of the radiator that resonates in the GPS-L5 frequency band is greater than the physical length of the first radiator 111, in other words, the physical length of the first radiator 111 is insufficient to support the GPS-L1 frequency band.

If the electromagnetic wave signals of the first frequency band and the second frequency band are required to be supported simultaneously, an antenna is required to be additionally arranged to support the electromagnetic wave signals of the second frequency band or the first frequency band. As can be seen, the related art needs to support the electromagnetic wave signals of the first frequency band and the electromagnetic wave signals of the second frequency band, so that the antenna assembly 10 has a larger size and occupies a larger space. Since the antenna assembly 10 of the related art has a large size, a large space is occupied, and stacking with other devices in the electronic apparatus 1 is difficult when the antenna assembly 10 of the related art is applied to the electronic apparatus 1. In addition, in the related art, the first antenna 110 can only transmit and receive electromagnetic wave signals in the first frequency band, and an additional antenna is required to support electromagnetic wave signals in the second frequency band, which may cause an increase in the radio frequency link insertion loss in the antenna assembly 10. In addition, in the related art, the antenna supporting the electromagnetic wave signal of the first frequency band is provided, and the additional antenna supporting the electromagnetic wave signal of the second frequency band is provided, which may result in high cost of the antenna assembly 10.

By adding the band-pass filter circuit 114 in the antenna assembly 10 of this embodiment, the first antenna 110 can support the electromagnetic wave signals of the first frequency band and the electromagnetic wave signals of the second frequency band, and no additional antenna is required to support the electromagnetic wave signals of the second frequency band, so that the volume of the antenna assembly 10 is smaller and the occupied space is not large. When the antenna assembly 10 in the present embodiment is applied to stacking with other devices in the electronic apparatus 1, the stacking difficulty is low. In addition, the first antenna 110 of the antenna assembly 10 in the present embodiment can support the electromagnetic wave signal in the first frequency band and the electromagnetic wave signal in the second frequency band, so that the radio frequency link in the antenna assembly 10 is less in insertion loss. In addition, the first antenna 110 of the antenna assembly 10 in the present embodiment can support the electromagnetic wave signal of the first frequency band and the electromagnetic wave signal of the second frequency band, so as to reduce the cost of the antenna assembly 10.

In summary, in the antenna assembly 10 of the present application, the band-pass filter circuit 114 is disposed in the first antenna 110, so that the first antenna 110 can not only transmit and receive electromagnetic wave signals of the first frequency band, but also transmit and receive electromagnetic wave signals of the second frequency band, thereby improving the communication effect of the antenna assembly 10. The band-pass filter circuit 114 can adjust an equivalent electrical length from the first ground terminal G1 to the ground GND1, so that the first radiator 111 generates a first resonant mode a covering the first frequency band and a second resonant mode b covering the second frequency band.

Optionally, the band-pass filter circuit 114 is inductive in the first frequency band to adjust (e.g. increase) the equivalent electrical length between the first ground G1 and the ground GND1, thereby generating a first resonant mode a covering the first frequency band. The band-pass filter circuit 114 is capacitive in the second frequency band to adjust an equivalent electrical length between the first ground G1 and the ground GND1, thereby generating a second resonant mode b covering the second frequency band.

The structure of the band-pass filter circuit 114 is not specifically limited in this application, and the band-pass filter circuit 114 is exemplified by the following embodiments, but of course, the structure of the band-pass filter circuit 114 includes, but is not limited to, the following embodiments.

Referring to fig. 6, fig. 6 is a schematic diagram of a bandpass filter circuit according to a first embodiment of the present application. The band-pass filter circuit 114 includes a first capacitance unit C0 and a first inductance unit L1. One end of the first capacitor unit C0 and one end of the first inductor unit L1 are electrically connected to the first ground terminal G1. The other end of the first capacitance unit C0 and the other end of the first inductance unit L1 are electrically connected to the ground GND1. The first capacitor unit C0 may adjust the band-pass frequency band of the band-pass filter circuit 114, and the first capacitor unit C0 and the first inductor unit L1 disposed in parallel may adjust the band-stop frequency band of the band-pass filter circuit 114. The equivalent electric length between the first ground end G1 and the ground electrode GND1 is adjusted by adjusting the capacitance unit value of the first capacitance unit C0 and the inductance unit value of the first inductance unit L1, so that a first resonance mode a covering the first frequency band and a second resonance mode b covering the second frequency band are generated.

Referring to fig. 7, fig. 7 is a schematic diagram of a band-pass filter circuit 114 according to a second embodiment of the present application. On the basis of the band-pass filter circuit 114 shown in fig. 5, the band-pass filter circuit 114 further comprises a second inductance unit L0. One end of the second inductance unit L0 is electrically connected to a connection node between the other end of the first capacitance unit C0 and the other end of the first inductance unit L1. The other end of the second inductance unit L0 is grounded to the ground electrode GND1. The equivalent electrical length between the first ground terminal G1 and the ground electrode GND1 is adjusted by adjusting the capacitance unit value of the first capacitance unit C0, the inductance unit value of the first inductance unit L1 and the inductance unit value of the second inductance unit L0, so as to generate a first resonance mode a covering the first frequency band and a second resonance mode b covering the second frequency band.

Referring to fig. 8, fig. 8 is a schematic diagram of a bandpass filter circuit 114 according to a third embodiment of the present application. On the basis of the band-pass filter circuit 114 shown in fig. 5, the band-pass filter circuit 114 further comprises a second inductance unit L0. One end of the second inductance unit L0 is electrically connected to the first ground terminal G1. The other end of the second inductance unit L0 is electrically connected to one end of the first capacitance unit C0. The first capacitor unit C0 and the second inductor unit L0 adjust the band-pass frequency band, and the first capacitor unit C0, the first inductor unit L1 and the second inductor unit L0 adjust the band-stop frequency band. The equivalent electrical length between the first ground terminal G1 and the ground electrode GND1 is adjusted by adjusting the capacitance unit value of the first capacitance unit C0, the inductance unit value of the first inductance unit L1 and the inductance unit value of the second inductance unit L0, so as to generate a first resonance mode a covering the first frequency band and a second resonance mode b covering the second frequency band.

For example, the radiator 111 is grounded through the band-pass filter circuit 114, and the capacitance unit value of the first capacitance unit C0, the inductance unit value of the first inductance unit L1, and the inductance unit value of the second inductance unit L0 can be determined according to actual tuning requirements.

The above-mentioned band-pass filter circuit 114 generates two resonances, when the frequency is lower than the first resonance frequency point, the band-pass filter circuit 114 presents an inductance, when the frequency is between the first resonance frequency point and the second resonance frequency point, the band-pass filter circuit 114 presents a capacitance, and when the frequency is higher than the second resonance frequency point, the band-pass filter circuit 114 presents an inductance. The capacitance unit value of the first capacitance unit C0, the inductance unit value of the first inductance unit L1, and the inductance unit value of the second inductance unit L0 are adjusted, so that the band-pass filter circuit 114 is inductive in the first frequency band, and the band-pass filter circuit 114 is equivalent to the inductance unit in the first frequency band, so that the band-pass filter circuit 114 is capacitive in the second frequency band, and the band-pass filter circuit 114 is equivalent to the capacitance unit in the second frequency band. The bandpass filter circuit 114 is equivalent to a 7.6nH inductor unit in the first frequency band (center frequency 1176 MHz). The band-pass filter circuit 114 is equivalent to a 24.7pF capacitor unit in the second frequency band (the center frequency is 1575 MHz), so that the band-pass filter circuit 114 causes the first radiator 111, the band-pass filter circuit 114 to the ground pole GND1 to have different electrical lengths, for example, the band-pass filter circuit 114 causes the first radiator 111, the band-pass filter circuit 114 to the ground to have an electrical length capable of exciting a resonance mode with the center frequency of 1176MHz, and the band-pass filter circuit 114 causes the first radiator 111, the band-pass filter circuit 114 to the ground pole GND1 to have an electrical length capable of exciting a resonance mode with the center frequency of 1575MHz to excite a resonance mode with different frequency bands to generate a first resonance mode a covering the first frequency band and a second resonance mode b covering the second frequency band.

Referring to fig. 9, the band-pass filter circuit 114 includes a series circuit of a second inductance unit L0 and a first capacitance unit C0. In this embodiment, the band-pass filter circuit 114 includes a second inductance unit L0 and a first capacitance unit C0 connected in series as an example, and in other embodiments, the number of the inductances in the band-pass filter circuit 114 may be two or more, and correspondingly, the number of the capacitances in the band-pass filter circuit 114 may be two or more.

Referring to fig. 10, in an embodiment, the first signal source 112 is further configured to provide an excitation signal to excite the first radiator 111 to generate a third resonant mode c. The current of the third resonant mode c is distributed between the first feeding point P1 and the first free end F1, and the third resonant mode c is used for receiving and transmitting electromagnetic wave signals covering a third frequency band, a fourth frequency band and a fifth frequency band.

In this embodiment, the third frequency band includes a WIFI 2.4G frequency band, the fourth frequency band includes at least a portion of an LTE MHB frequency band, and the fifth frequency band includes at least a portion of an NR-5G MHB frequency band. In other words, the first antenna 110 is further configured to receive and transmit electromagnetic wave signals in WIFI 2.4G band, electromagnetic wave signals in LTE MHB band, and electromagnetic wave signals in NR-5G MHB band. The second and third resonant modes b and c may together cover the LTE MHB band and the NR-5G MHB band.

The WIFI 2.4G frequency band comprises 2.4 GHz-2.5 GHz; the LTE MHB Band is a medium-High frequency (Middle High Band), and its Band range is: 1000 MHz-3000 MHz. The NR-5G MHB Band is a medium-High frequency (Middle High Band) and has the following frequency range: 1000 MHz-3000 MHz. For example, the NR-5G MHB band includes the N41 band. The N41 frequency band refers to electromagnetic wave signals with the frequency band range of 2496MHz-2690 MHz.

When the first antenna 110 transmits and receives the electromagnetic wave signals of the first frequency band and the electromagnetic wave signals of the second frequency band, and is also used for transmitting and receiving the electromagnetic wave signals of the WIFI 2.4G frequency band, the electromagnetic wave signals of the LTE MHB frequency band, and the electromagnetic wave signals of the NR-5G MHB frequency band (e.g., N41), it means that the first antenna 110 can transmit and receive the electromagnetic wave signals of the first frequency band, the electromagnetic wave signals of the second frequency band, the electromagnetic wave signals of the WIFI 2.4G frequency band, the electromagnetic wave signals of the LTE MHB frequency band, and the electromagnetic wave signals of the NR-5G MHB frequency band at the same time. The first antenna 110 of the present application can transmit and receive electromagnetic wave signals with more frequency bands, so that the communication performance of the antenna assembly 10 is better.

The bandpass filter circuit 114 is inductive in the third frequency band. In the present embodiment, the configuration of the band-pass filter circuit 114 is shown in fig. 8. The capacitance value of the first capacitor C0, the inductance value of the first inductor L1, and the inductance value of the second inductor L0 are adjusted to make the band-pass filter circuit 114 inductive in the third frequency band, so that the band-pass filter circuit 114 is equivalent to an inductor in the third frequency band, for example, the band-pass filter circuit 114 is equivalent to a 1.2nH inductor in the third frequency band (the center frequency is 2450 MHz). In this way, the band-pass filter circuit 114 makes the first radiator 111, the band-pass filter circuit 114 and the ground GND1 have an electrical length capable of exciting a resonant mode with a center frequency of 2450MHz, so as to excite the resonant mode with the center frequency of 2450MHz, namely the third resonant mode c.

For the antenna structure in which the first ground G1 and the connection point P3 are located at the same position, the first signal source 112 is further configured to provide an excitation signal to excite the first radiator 111 to generate a fourth resonant mode f. The current of the fourth resonance mode F is distributed between the first ground terminal G1 and the first feeding point P1 and between the first free terminal F1 and the first feeding point P1. The fourth resonance mode f is used for receiving and transmitting electromagnetic wave signals covering the sixth frequency band. The sixth frequency band includes the WIF-5G frequency band. The band pass filter circuit 114 is inductive in the sixth frequency band.

In the present embodiment, the configuration of the band-pass filter circuit 114 is shown in fig. 8. The band-pass filter circuit 114 generates two resonances, and when the frequency is lower than the first resonance frequency point, the band-pass filter circuit 114 presents an inductance, and when the frequency is between the first resonance frequency point and the second resonance frequency point, the band-pass filter circuit 114 presents a capacitance, and when the frequency is higher than the second resonance frequency point, the band-pass filter circuit 114 presents an inductance. The capacitance value of the first capacitor C0, the inductance value of the first inductor L1 and the inductance value of the second inductor L0 are adjusted so that the first frequency band is smaller than the first resonance frequency point, the second frequency band is located between the first resonance frequency point and the second resonance frequency point, and the third frequency band to the sixth frequency band are larger than the second resonance frequency point. This causes the bandpass filter circuit 114 to be inductive in the first frequency band, capacitive in the second frequency band, and inductive in all of the third through sixth frequency bands. In other words, the band-pass filter circuit 114 is equivalent to an inductance in the first frequency band, and further, the band-pass filter circuit 114 is equivalent to a 7.6nH inductance in the first frequency band (the center frequency is 1176 MHz). In this way, the first radiator 111, the band-pass filter circuit 114 and the ground GND1 have an electrical length capable of exciting a resonance mode with a center frequency of 1176MHz, thereby generating a first resonance mode a. The band-pass filter circuit 114 is equivalent to a capacitor in the second frequency band, and further, the band-pass filter circuit 114 is equivalent to a capacitor of 24.7pF in the second frequency band (the center frequency is 1575 MHz). In this way, the first radiator 111, the band-pass filter circuit 114 and the ground GND1 have an electrical length capable of exciting a resonance mode with a center frequency of 1575MHz, thereby generating a second resonance mode b. The bandpass filter circuit 114 is equivalent to a 7.6nH inductor in the third frequency band (center frequency 1176 MHz). In this way, the first radiator 111, the band-pass filter circuit 114 and the ground GND1 have an electrical length capable of exciting a resonance mode with a center frequency of 1176MHz, thereby generating a first resonance mode a.

The band-pass filter circuit 114 is inductive in the third frequency band, so that the band-pass filter circuit 114 is equivalent to an inductance in the third frequency band, for example, the band-pass filter circuit 114 is equivalent to a 1.2nH inductance in the third frequency band (the center frequency is 2450 MHz). In this way, the band-pass filter circuit 114 makes the first radiator 111, the band-pass filter circuit 114 and the ground GND1 have an electrical length capable of exciting a resonant mode with a center frequency of 2450MHz, so as to excite the resonant mode with the center frequency of 2450MHz, namely the third resonant mode c. Of course, the third resonance mode c is also capable of supporting at least part of the electromagnetic wave signal of the LTE MHB band, as well as the NR-5G MHB band.

The band-pass filter circuit 114 is inductive in the third frequency band, so that the band-pass filter circuit 114 is equivalent to an inductance in the third frequency band, for example, the band-pass filter circuit 114 is equivalent to a 1.2nH inductance in the third frequency band (the center frequency is 2450 MHz). In this way, the band-pass filter circuit 114 makes the first radiator 111 and the band-pass filter circuit 114 have an electrical length to ground that can excite the resonant mode with the center frequency of 2450MHz, so as to excite the resonant mode with the center frequency of 2450MHz, namely, the third resonant mode c. Of course, the third resonant mode c can also support at least part of the fourth frequency band and the fifth frequency band.

The band-pass filter circuit 114 is inductive in the sixth frequency band, so that the band-pass filter circuit 114 is equivalent to an inductor in the sixth frequency band, for example, the band-pass filter circuit 114 is equivalent to 1.5nH inductor in the sixth frequency band (the center frequency is 5500 MHz). In this way, the band-pass filter circuit 114 makes the first radiator 111, the band-pass filter circuit 114 and the ground GND1 have an electrical length capable of exciting a resonant mode with a center frequency of 5500MHz, so as to excite the resonant mode with the center frequency of 5500MHz, namely, the fourth resonant mode g. Of course, the fourth resonance mode g can also support at least part of the sixth frequency band.

Referring to fig. 11a to 11d, fig. 11a to 11d are current distribution diagrams of the first antenna 110 corresponding to the first resonance mode a to the fourth resonance mode g, respectively. Referring to fig. 11a, a current of a first resonant mode a flows from the ground GND1 to the first free end F1, wherein the first resonant mode a is a 1/4 wavelength mode (1/4 wavelength mode is also called a fundamental mode, and has a higher efficiency at the resonant frequency) from the ground GND1 to the first free end F1, and the equivalent inductance is 7.6 nH. Referring to fig. 11b, the current of the second resonant mode b flows from the ground GND1 to the first free end F1, wherein the second resonant mode b is a 1/4 wavelength mode from the ground GND1 to the first free end F1, and passes through the equivalent capacitor 24.7pF of the lower ground GND1. Referring to fig. 11c, the current of the third resonant mode c is from the first feeding point P1 to the first free end F1, and the third resonant mode c is a 1/4 wavelength mode from the first feeding point P1 to the first free end F1, and passes through the equivalent inductance 1.2nH and the lower ground GND1. Referring to fig. 11d, the current of the fourth resonant mode F flows from the ground GND1 to the first feeding point P1 and from the first free end F1 to the first feeding point P1, and the fourth resonant mode F is a 3/4 wavelength mode from the ground GND1 to the first free end F1, and passes through the equivalent inductance 1.5nH of the ground GND1. The current distribution is not limited to a main distribution position of the current, and all the current is not limited to be distributed only at the above position.

Referring to fig. 12, the antenna assembly 10 further includes a second antenna 120. The second antenna 120 includes a second radiator 121 and a second signal source 122. The second radiator 121 includes a second ground terminal G2 and a second free terminal F2. The second ground terminal G2 is grounded to the electrode CND3. The second free end F2 is disposed opposite the first free end F1. The second free end F2 and the first free end F1 form a coupling gap therebetween, in other words, the first radiator 111 and the second radiator 121 are capacitively coupled through the coupling gap.

A second feeding point P2 is disposed between the second ground terminal G2 and the second free terminal F2. The second radiator 121 is electrically connected to the second signal source 122 at the second feeding point P2.

Referring to fig. 13, the second signal source 122 is configured to provide an excitation signal to excite the second radiator 121 to generate a fifth resonant mode e and a sixth resonant mode f1. The fifth resonance mode e and the sixth resonance mode f1 are used for transmitting and receiving electromagnetic wave signals covering the seventh frequency band. The seventh frequency band comprises a WIFI-5G frequency band. It can be appreciated that the sixth resonant mode f1 and the fourth resonant mode f are substantially the same resonant mode, and are resonant modes covering the WIFI-5G frequency band.

Referring to fig. 12, the first antenna 110 further includes a first isolation circuit 113, and the first feeding point P1 on the first radiator 111 electrically connects the first isolation circuit 113 to the first signal source 112. The second antenna 120 further includes a second isolation circuit 123, the second feeding point P2 on the second radiator 121 is electrically connected to the second isolation circuit 123 to the second signal source 122, and the first isolation circuit 113 and the second isolation circuit 123 are used for isolating the first antenna 110 and the second antenna 120.

Referring to fig. 13, the first isolation circuit 113 and the second isolation circuit 123 are configured to adjust the resonant frequency of the second antenna 120 according to a preset frequency selection parameter, so that the second antenna 120 resonates in a seventh resonant mode d and an eighth resonant mode. The eighth resonant mode may refer to the location of the fifth resonant mode e in fig. 13. The seventh resonance mode d is used for covering the transmission and the reception of electromagnetic wave signals of an eighth frequency band and a ninth frequency band, and the eighth resonance mode d is used for covering the transmission and the reception of electromagnetic wave signals of a tenth frequency band. In this embodiment, the eighth frequency band includes an N78 frequency band (3.3 GHz to 3.8 GHz), the ninth frequency band includes an N77 frequency band (3.3 GHz to 4.2 GHz), and the tenth frequency band includes an N79 frequency band (4.4 GHz to 5.0 GHz). It will be appreciated that in other embodiments, the eighth frequency band, the ninth frequency band, and the tenth frequency band may be other frequency bands.

Referring to fig. 14a to 14f, fig. 14a to 14f are current distribution diagrams of the antenna assembly 10 shown in fig. 12, respectively, for generating the resonant modes a to f1 in fig. 13. Referring to fig. 14a, a current of a first resonant mode a flows from the ground GND1 to the first free end F1, wherein the first resonant mode a is a 1/4 wavelength mode (1/4 wavelength mode is also called a fundamental mode, and has a higher efficiency at the resonant frequency) from the ground GND1 to the first free end F1, and the equivalent inductance is 7.6 nH. Referring to fig. 14b, the current of the second resonant mode b flows from the ground GND1 to the first free end F1, wherein the second resonant mode b is a 1/4 wavelength mode from the ground GND1 to the first free end F1, and passes through the equivalent capacitor 24.7pF of the lower ground GND1. Referring to fig. 14c, the current of the third resonant mode c flows from the first feeding point P1 to the first free end F1 and is coupled to the second radiator 121, so that the current flows from the second free end F1 to the second ground end G2. The third resonance mode c is a 1/4 wavelength mode from the first feeding point P1 to the first free end F1, and passes through the equivalent inductance 1.2nH and the lower ground electrode GND1. Referring to fig. 14d, the current of the seventh resonant mode d flows from the second feeding point P2 to the second ground F2. Referring to fig. 14e, a current in the fifth resonant mode e (i.e., the eighth resonant mode) flows from the second ground terminal F2 to the second feeding point P2. Referring to fig. 14F, a current of the sixth resonant mode F1 (i.e., the fourth resonant mode F in fig. 11 d) flows from the second feeding point P2 to the second free end F2, then flows from the first free end F1 to the first feeding point P1, and further flows from the first ground end G1 to the first feeding point P1. The sixth resonant mode F1 is a 3/4 wavelength mode from the ground GND1 to the first free end F1, and passes through the equivalent inductance 1.5nH and the ground GND1. The current distribution is not limited to a main distribution position of the current, and all the current is not limited to be distributed only at the above position.

The above connection point P3 and the first ground G1 are located at the same position, and the dual antenna structure formed by the first antenna 110 and the second antenna 120, and the resonant mode and the current distribution generated by the dual antenna structure are described. The following describes a dual antenna structure formed by the first antenna 110 and the second antenna 120, in which the connection point P3 is spaced from the first ground G1.

Referring to fig. 15, fig. 15 is a schematic diagram of an antenna assembly according to another embodiment of the present application. The first radiator 111 includes a first sub-radiator 1111, a second sub-radiator 1112, and a third sub-radiator 1113. One end of the first sub-radiator 1111 is the first ground connection end G1, the other end of the first sub-radiator 1111 is connected with the second sub-radiator 1112 in a bending manner, the second sub-radiator 1112 is provided with the connection point P3 and the first feeding point P1, the other end of the second sub-radiator 1112 is connected with the third sub-radiator 1113 in a bending manner, the third sub-radiator 1113 and the first sub-radiator 1111 are both located on the same side of the second sub-radiator 1112, and one end of the third sub-radiator 1113 away from the second sub-radiator 1112 is the first free end F1.

The antenna assembly 10 further includes a second antenna 120. The second antenna 120 includes a second radiator 121 and a second signal source 122. The first radiator 111 and the second radiator 121 are disposed at a distance from each other and coupled to each other. The second radiator 121 has a second ground end G2 and a second free end F2, and a second feeding point P2 is further disposed between the second ground end G2 and the second free end F2. The second radiator 121 is electrically connected to the second signal source 122 at the second feeding point P2. The second ground terminal G2 is grounded, and the second free terminal F2 is opposite to and spaced from the first free terminal F1.

The second signal source 122 is configured to generate an excitation signal, which is applied to the second radiator 121, so that the second radiator 121 radiates an electromagnetic wave signal. The first radiator 111 and the second radiator 121 are disposed at intervals and are coupled to each other, that is, the first radiator 111 and the second radiator 121 are co-aperture, when the antenna assembly 10 works, an excitation signal generated by the first signal source 112 may be coupled to the second radiator 121 via the first radiator 111, in other words, when the first antenna 110 transmits and receives electromagnetic wave signals, not only the first radiator 111 but also the second radiator 121 in the second antenna 120 may be utilized to transmit and receive electromagnetic wave signals, so that the first antenna 110 may work in a wider frequency band. Similarly, the first radiator 111 and the second radiator 121 are disposed at intervals and are coupled to each other, when the antenna assembly 10 works, the excitation signal generated by the second signal source 122 can be coupled to the first radiator 111 via the second radiator 121, in other words, when the second antenna 120 works, not only the second radiator 121 but also the first radiator 111 in the first antenna 110 can be used to transmit and receive electromagnetic wave signals, so that the second antenna 120 can also work in a wider frequency band. Since the first antenna 110 may use not only the first radiator 111 but also the second radiator 121 when operating, and the second antenna 120 may use not only the second radiator 121 but also the first radiator 111 when operating, the radiators are shared, that is, space multiplexing is realized, which is beneficial to reducing the size of the antenna assembly 10.

With continued reference to fig. 15, the second radiator 121 includes a fourth sub-radiator 1211 and a fifth sub-radiator 1212. One end of the fourth sub-radiator 1211 is opposite to the first free end F1 and is disposed at an interval, the other end of the fourth sub-radiator 1211 is connected to the fifth sub-radiator 1212 in a bending manner, and one end of the fifth sub-radiator 1212 facing away from the fourth sub-radiator 1211 is grounded. In other words, one end of the fourth sub-radiator 1211 serves as the second free end F2, and one end of the fifth sub-radiator 1212 facing away from the fourth sub-radiator 1211 serves as the second ground end G2.

Such a structural arrangement of the first radiator 111 and the second radiator 121 may facilitate the angular arrangement of the antenna assembly 10 with respect to the electronic device 1. When the antenna assembly 10 is disposed corresponding to the corner of the electronic device 1, the antenna assembly 10 is difficult to be held by a user when the user uses the electronic device 1, so that the electronic device 1 to which the antenna assembly 10 is applied has a good communication effect.

In the schematic diagram of the present embodiment, the first radiator 111 is illustrated as being located on the left side of the second radiator 121. In the present embodiment, the first sub-radiator 1111, the second sub-radiator 1112, and the third sub-radiator 1113 are each illustrated as rectangular, and in other embodiments, the first sub-radiator 1111, the second sub-radiator 1112, and the third sub-radiator 1113 may have other shapes. Accordingly, in the present embodiment, the shapes of the fourth sub-radiator 1211 and the fifth sub-radiator 1212 are each exemplified by a rectangle, and in other embodiments, the shapes of the fourth sub-radiator 1211 and the fifth sub-radiator 1212 may be other shapes.

In the present embodiment, the first sub-radiator 1111 and the third sub-radiator 1113 each extend along a first direction D1, the second sub-radiator 1112 extends along a second direction D2, and the first direction D1 is perpendicular to the second direction D2. In the present embodiment, the fourth sub-radiator 1211 is disposed opposite to the third sub-radiator 1113, and the fourth sub-radiator 1211 extends along the first direction D1. The fifth sub-radiator 1212 extends along the second direction D2. It will be appreciated that in other embodiments, the first direction D1 and the second direction D2 may not be perpendicular, and the first sub-radiator 1111 may not be parallel to the third sub-radiator 1113. The shape and extension direction of the first sub-radiator 1111, the second sub-radiator 1112, and the third sub-radiator 1113 may be adjusted according to the environment in which the antenna assembly 10 is used. Accordingly, in other embodiments, the shape and the extending direction of the fourth sub-radiator 1211 and the fifth sub-radiator 1212 can be adjusted according to the environment in which the antenna assembly 10 is used.

Referring to fig. 16, fig. 16 is a schematic diagram of an antenna assembly according to another embodiment of the present application. In this embodiment, the first radiator 111 includes a first sub-radiator 1111 and a second sub-radiator 1112 connected in a bent manner. The end of the first sub-radiator 1111 facing away from the second sub-radiator 1112 is the first ground end G1, and the second sub-radiator 1112 has the connection point P3 and the first feeding point P1. The end of the second sub-radiator 1112 facing away from the first sub-radiator 1111 is the first free end F1. The second radiator 121 includes a third sub-radiator 1113, a fourth sub-radiator 1211, and a fifth sub-radiator 1212, which are sequentially bent and connected. The third sub-radiator 1113 and the fifth sub-radiator 1212 are both located at the same side of the fourth sub-radiator 1211, one end of the third sub-radiator 1113 is opposite to the first free end F1 and is disposed at a distance from the first free end F1, and one end of the fifth sub-radiator 1212 facing away from the fourth sub-radiator 1211 is grounded. In other words, the end of the third sub-radiator 1113 opposite to the first free end F1 is the second free end F2, and the end of the fifth sub-radiator 1212 facing away from the fourth sub-radiator 1211 is the second ground end G2.

In the schematic diagram of the present embodiment, the first radiator 111 is illustrated as being located on the right side of the second radiator 121. In the present embodiment, the first sub-radiator 1111, the second sub-radiator 1112, and the third sub-radiator 1113 are each illustrated as rectangular, and in other embodiments, the first sub-radiator 1111, the second sub-radiator 1112, and the third sub-radiator 1113 may have other shapes. Accordingly, in the present embodiment, the shapes of the fourth sub-radiator 1211 and the fifth sub-radiator 1212 are each exemplified by a rectangle, and in other embodiments, the shapes of the fourth sub-radiator 1211 and the fifth sub-radiator 1212 may be other shapes.

In the present embodiment, the first sub-radiator 1111 extends along the second direction D2, the second sub-radiator 1112 extends along the first direction D1, and the first direction D1 is perpendicular to the second direction D2. In this embodiment, the third sub-radiator 1113 is disposed opposite to the second sub-radiator 1112, and the third sub-radiator 1113 and the fifth sub-radiator 1212 extend along the first direction D1, and the fourth sub-radiator 1211 extends along the first direction D1. It is to be understood that in other embodiments, the first direction D1 and the second direction D2 may not be perpendicular, the first sub-radiator 1111 and the fourth sub-radiator 1211 may not be parallel, and the second sub-radiator 1112 and the third sub-radiator 1113 may not be on the same line. The shape and extension direction of the first and second sub-radiators 1111 and 1112 can be adjusted according to the environment in which the antenna assembly 10 is used. Accordingly, in other embodiments, the shape and extension direction of the third sub-radiator 1113, the fourth sub-radiator 1211, and the fifth sub-radiator 1212 can be adjusted according to the environment in which the antenna assembly 10 is used.

Referring to fig. 17, fig. 17 is a schematic diagram of an antenna assembly according to another embodiment of the present application. In this embodiment, the first radiator 111 includes a first sub-radiator 1111 and a second sub-radiator 1112 connected in a bent manner. One end of the first sub-radiator 1111 facing away from the second sub-radiator 1112 is the first ground G1. The second sub-radiator 1112 has the connection point P3 and the first feeding point P1, and one end of the second sub-radiator 1112 facing away from the first sub-radiator 1111 is the first free end F1. The second radiator 121 includes a third sub-radiator 1113 and a fourth sub-radiator 1211 connected in a bent manner. One end of the third sub-radiator 1113 facing away from the fourth sub-radiator 1211 is spaced from the first free end F1, and one end of the fourth sub-radiator 1211 facing away from the third sub-radiator 1113 is grounded. In other words, the end of the third sub-radiator 1113 facing away from the fourth sub-radiator 1211 is the second free end F2, and the end of the fourth sub-radiator facing away from the third sub-radiator 1113 is the second ground end G2.

This structural arrangement of the first radiator 111 and the second radiator 121 in this embodiment may facilitate the arrangement of the antenna assembly 10 corresponding to the side of the electronic device 1. When the antenna assembly 10 is disposed corresponding to a side (e.g., a top side) of the electronic device 1, the antenna assembly 10 is more difficult to be held by a user when the user holds the side of the electronic device 1 while using the electronic device 1, so that the electronic device 1 to which the antenna assembly 10 is applied has a better communication effect.

In the present embodiment, the first and second sub-radiators 1111 and 1112 are each illustrated as a rectangle, and in other embodiments, the first and second sub-radiators 1111 and 1112 may have other shapes. Accordingly, in the present embodiment, the shapes of the third sub-radiator 1113 and the fourth sub-radiator 1211 are each illustrated as a rectangle, and in other embodiments, the shapes of the third sub-radiator 1113 and the fourth sub-radiator 1211 may be other shapes.

In the present embodiment, the first sub-radiator 1111 extends along the second direction D2, the second sub-radiator 1112 extends along the first direction D1, and the first direction D1 is perpendicular to the second direction D2. In this embodiment, the third sub-radiator 1113 and the second sub-radiator 1112 are opposite to each other, and the third sub-radiator 1113 and the second sub-radiator 1112 both extend along the first direction D1, and the fourth sub-radiator 1211 extends along the second direction D2. It will be appreciated that in other embodiments, the first direction D1 and the second direction D2 may not be perpendicular, the first sub-radiator 1111 and the fourth sub-radiator 1211 may not be parallel, and the second sub-radiator 1112 and the third sub-radiator 1113 may be aligned.

In an embodiment, the second feeding point P2 of the second sub-radiator 1112 connected to the second signal source 122 is located away from the first sub-radiator 1111 compared to the connection point P3.

In combination with the antenna assembly 10 provided in the foregoing embodiments, the connection point P3 of the band-pass filter circuit 114 to the first radiator 111 is disposed away from the gap between the first radiator 111 and the second radiator 121 compared to the second feeding point P2 of the first signal source 112 to the first radiator 111. In other words, the connection point P3 is directed away from the first free end F1 compared to the second feeding point P2.

The location of the connection point P3 is beneficial to reducing the influence of the electromagnetic wave signal of the second frequency band on the performance of other frequency bands transmitted and received by the first antenna 10.

It will be appreciated that in other embodiments, the connection point P3 of the band-pass filter circuit 114 to the first radiator 111 is disposed adjacent to the first free end F1 compared to the second feeding point P2 of the first radiator 111 to which the first signal source 112 is connected. At this time, the electromagnetic wave signals of the second frequency band have an influence on the performance of the first antenna 10 in other frequency bands including the first frequency band, but the electromagnetic wave signals of the first frequency band may be transmitted and received by the first antenna 110, or the electromagnetic wave signals of the second frequency band may be transmitted and received. The first isolation circuit 113 and the second isolation circuit 123 of the first antenna 110 and the second antenna 120 can be combined with the antenna assembly 10 provided in any of the above embodiments, and in the schematic diagram of the present embodiment, the first isolation circuit 113 and the second isolation circuit 123 of the first antenna 110 and the second antenna 120 are combined with the antenna assembly 10 provided in fig. 1 for illustration.

Referring to fig. 18, the first feeding point P1 on the first radiator 111 is electrically connected to the first isolation circuit 113 and the first signal source 112, that is, the first signal source 112 is electrically connected to the first isolation circuit 113 and the first feeding point P1 on the first radiator 111. The first signal source 112 is electrically connected to the first isolation circuit 113 to the first signal source 112, which means that the first signal source 112 is electrically connected to an input end of the first isolation circuit 113, and an output end of the first isolation circuit 113 is electrically connected to the first feeding point P1 on the first radiator 111. The second feeding point P2 on the second radiator 121 electrically connects the second isolation circuit 123 to the second signal source 122, that is, the second signal source 122 electrically connects the second isolation circuit 123 to the second feeding point P2 on the second radiator 121. The second signal source 122 is electrically connected to the second isolation circuit 123, which means that the second signal source 122 is electrically connected to the input end of the second isolation circuit 123, and the output end of the second isolation circuit 123 is electrically connected to the second feeding point P2 on the second radiator 121.

The first signal source 112 is configured to generate an excitation signal, which is applied to the first radiator 111 via the first isolation circuit 113, so that the first antenna 110 radiates an electromagnetic wave signal. The second signal source 122 is configured to generate an excitation signal, which is applied to the second radiator 121 via the second isolation circuit 123, so that the second antenna 120 radiates an electromagnetic wave signal.

The first isolation circuit 113 and the second isolation circuit 123 are configured to isolate the first antenna 110 and the second antenna 120, which means that the first isolation circuit 113 and the second isolation circuit 123 isolate electromagnetic wave signals received by the first antenna 110 and electromagnetic wave signals received by the second antenna 120 from each other.

The first isolation circuit 113 is also called a matching circuit or a frequency-selective filter circuit. The second isolation circuit 123 may also be referred to as a matching circuit and a frequency selective filter circuit. The second antenna 120 is configured to receive and transmit electromagnetic wave signals in a third frequency band, and the first isolation circuit 113 and the second isolation circuit 123 are further configured to enable the second antenna 120 to receive and transmit electromagnetic wave signals in at least one of a fourth frequency band and a fifth frequency band. The specific structure of the first isolation circuit 113 and the second isolation circuit 123 will be described in detail later.

Referring to fig. 19, fig. 19 is a schematic view of an antenna assembly according to another embodiment of the present application. The first isolation circuit 113 includes one or more sub-isolation circuits 113a. The second isolation circuit 123 includes one or more sub-isolation circuits 113a. The sub-isolation circuit 113a in the first isolation circuit 113 may be the same as or different from the sub-isolation circuit 113a in the second isolation circuit 123. When the first isolation circuit 113 includes a plurality of sub isolation circuits 113a, the plurality of sub isolation circuits 113a may be connected in series, in parallel, or the like. When the second isolation circuit 123 includes a plurality of sub-isolation circuits 113a, the plurality of sub-isolation circuits 113a may be connected in series, in parallel, or the like. In this embodiment, the first isolation circuit 113 includes 2 parallel sub-isolation circuits 113a, and the second isolation circuit 123 includes 2 series sub-isolation circuits 113a is illustrated as an example. Each sub-isolation circuit 113a is described in detail below.

Referring to fig. 20 a-20 h, fig. 20 a-20 h are schematic diagrams of sub-isolation circuits provided in various embodiments of the present application. The sub-isolation circuit 113a includes one or more of the following circuits.

Referring to fig. 20a, the sub-isolation circuit 113a in fig. 20a includes a band-pass circuit formed by serially connecting an inductor L0 'and a capacitor C0'.

Referring to fig. 20b, the sub-isolation circuit 113a in fig. 20b includes a band-stop circuit formed by connecting an inductance L0 'and a capacitance C0' in parallel.

Referring to fig. 20C, the sub-isolation circuit 113a in fig. 20C includes an inductor L0 ', a first capacitor C1 ', and a second capacitor C2 '. The inductance L0 ' is connected in parallel with the first capacitor C1 ', and the second capacitor C2 ' is electrically connected to a node where the inductance L0 ' is electrically connected to the first capacitor C1 '.

Referring to fig. 20d, the sub-isolation circuit 113a in fig. 20d includes a capacitor C0 ', a first inductor L1 ', and a second inductor L2 '. The capacitor C0 ' is connected in parallel with the first inductor L1 ', and the second inductor L2 ' is electrically connected to a node where the capacitor C0 ' is electrically connected to the first inductor L1 '.

Referring to fig. 20e, the sub-isolation circuit 113a in fig. 20e includes an inductor L0 ', a first capacitor C1 ', and a second capacitor C2 '. The inductor L0 'is connected in series with the first capacitor C1', one end of the second capacitor C2 'is electrically connected to the first end of the inductor L0' which is not connected to the first capacitor C1 ', and the other end of the second capacitor C2' is electrically connected to the first end of the first capacitor C1 'which is not connected to the inductor L0'.

Referring to fig. 20f, the sub-isolation circuit 113a in fig. 20f includes a capacitor C0 ', a first inductor L1 ', and a second inductor L2 '. The capacitor C0 'is connected in series with the first inductor L1', one end of the second inductor L2 'is electrically connected with one end of the capacitor C0' which is not connected with the first inductor L1 ', and the other end of the second inductor L2' is electrically connected with one end of the first inductor L1 'which is not connected with the capacitor C0'.

Referring to fig. 20g, the sub-isolation circuit 113a in fig. 20g includes a first capacitor C1 ', a second capacitor C2', a first inductor L1 ', and a second inductor L2'. The first capacitor C1 'is connected in parallel with the first inductor L1', the second capacitor C2 'is connected in parallel with the second inductor L2', and one end of the whole formed by connecting the second capacitor C2 'and the second inductor L2' in parallel is electrically connected with one end of the whole formed by connecting the first capacitor C1 'and the first inductor L1' in parallel. In other words, the first capacitor C1 'is connected in parallel with the first inductor L1' to form a first unit 113b, the second capacitor C2 'is connected in parallel with the second inductor L2' to form a second unit 113C, and the first unit 113b is connected in series with the second unit 113C.

Referring to fig. 20h, in fig. 20h, the sub-isolation circuit 113a includes a first capacitor C1 ', a second capacitor C2', a first inductor L1 ', and a second inductor L2', wherein the first capacitor C1 'is connected in series with the first inductor L1' to form a first unit 113b, the second capacitor C2 'is connected in series with the second inductor L2' to form a second unit 113C, and the first unit 113b is connected in parallel with the second unit 113C.

Referring to fig. 21, optionally, the first isolation circuit 113 includes a first impedance tuning circuit, a first band-stop circuit, and a first filter circuit. One end of the first impedance tuning circuit is electrically connected to the first signal source 112. The other end of the first impedance tuning circuit is electrically connected with one end of the first band-stop circuit. The first impedance tuning circuit is used to tune the impedance matching of the first radiator 111. The other end of the first band-stop circuit is electrically connected with one end of the first filter circuit. The other end of the first filter circuit is electrically connected to the first feeding point P1 of the first radiator 111. The first band-stop circuit is used for forming band-stop characteristics in a first preset frequency band. The first preset frequency band is a frequency band supported by the second antenna 120, so as to increase isolation between the first signal source 112 of the first antenna 110 and the second signal source 122 of the second antenna 120. For example, the first preset frequency band is a frequency band greater than or equal to 3GHz, including but not limited to N78, etc. The first filter circuit is used for filtering the radio frequency signals of the first preset frequency band. For example, the first filtering circuit is used for filtering radio frequency signals with the frequency band greater than or equal to 3 GHz.

Referring to fig. 21, optionally, the first filter circuit includes a first sub-capacitor C11. One end of the first sub-capacitor C11 is electrically connected to the first feeding point P1 of the first radiator 111. The other end of the first sub-capacitor C11 is grounded; the first band-stop circuit comprises a second sub-capacitor C12 and a first sub-inductor which are connected in parallel. The first impedance tuning circuit comprises a third sub-capacitor C13, a fourth sub-capacitor C14 and a second sub-inductor L12. One end of the second sub-inductor L12 is electrically connected to one end of the first band-stop circuit, which is far away from the first filter circuit. The other end of the second sub-inductor L12 is grounded. One end of the third sub-capacitor C13 is electrically connected to one end of the second sub-inductor L12. The other end of the third sub-capacitor C13 is grounded. One end of the fourth sub-capacitor C14 is electrically connected to one end of the second sub-inductor L12. The other end of the fourth sub-capacitor C14 is electrically connected to the first signal source 112.

Referring to fig. 22, the second isolation circuit 123 includes a second impedance tuning circuit, a second band-stop circuit, and a second filter circuit. One end of the second impedance tuning circuit is electrically connected to the second signal source 122. The other end of the second impedance tuning circuit is electrically connected with one end of the second band-stop circuit. The other end of the second band-stop circuit is electrically connected with one end of the second filter circuit. The other end of the second filter circuit is electrically connected to the second feeding point P2 of the second radiator 121. The second impedance tuning circuit is configured to tune an impedance match of the second radiator 121. The second band-stop circuit is used for forming band-stop characteristics in a second preset frequency band. The second preset frequency band is a frequency band supported by the first antenna 110 to increase isolation between the first signal source 112 of the first antenna 110 and the second signal source 122 of the second antenna 120. For example, the second preset frequency band is a frequency band less than 3GHz, including but not limited to WiFi-2.4G and the like. The second filter circuit is used for filtering the radio frequency signals of the second preset frequency band.

Referring to fig. 22, optionally, the second filter circuit includes a third sub-inductor L21. One end of the third sub-inductor L21 is electrically connected to the second feeding point P2 of the second radiator 121. The other end of the third sub-inductor L21 is grounded; the second bandstop circuit comprises a fifth sub-capacitor C21 and a fourth sub-inductor L22 connected in parallel. The second impedance tuning circuit comprises a sixth sub-capacitor C22 and a fifth sub-inductor L23. One end of the sixth sub-capacitor C22 is electrically connected to one end of the second band-stop circuit, which is far away from the second filter circuit. The other end of the sixth sub-capacitor C22 is grounded. One end of the fifth sub-inductor L23 is electrically connected to one end of the sixth sub-capacitor C22. The other end of the fifth sub-inductor L23 is electrically connected to the second signal source 122.

Referring to fig. 23, fig. 23 is a schematic diagram of an antenna assembly according to another embodiment of the present application. In this embodiment, after the excitation signal generated by the second signal source 122 passes through the second isolation circuit 123, the excitation signal is capacitively coupled to the second radiator 121.

In an embodiment, the output end of the second isolation circuit 123 is electrically connected to one end of the coupling capacitor C3, and one end of the coupling capacitor C3 is electrically connected to the second radiator 121. After the excitation signal generated by the second signal source 122 passes through the second isolation circuit 123, the excitation signal is fed to the second radiator 121 through the coupling capacitor C3. The output end of the second isolation circuit 123 is connected to one end of the coupling capacitor C3, and one end of the coupling capacitor C3 is electrically connected to the second radiator 121, which may be incorporated into the antenna assembly according to any of the foregoing embodiments, and in this embodiment, an example of the coupling capacitor C3 is illustrated as being incorporated into the antenna assembly shown in fig. 1.

In another embodiment, a coupling capacitor C3 is formed between the output end of the second isolation circuit 123 and the second radiator 121, and the excitation signal generated by the second signal source 122 is fed to the second radiator 121 through the coupling capacitor C3 after passing through the second isolation circuit 123.

After the excitation signal generated by the second signal source 122 passes through the second isolation circuit 123, the capacitive coupling feed to the second radiator 121 may enable the electromagnetic wave signal received and transmitted by the second antenna 120 to have a higher efficiency bandwidth.

It will be appreciated that in other embodiments, the excitation signal generated by the second signal source 122 is directly coupled to the second radiator 121 after passing through the second isolation circuit 123. Specifically, the second signal source 122 is electrically connected to the input end of the second isolation circuit 123, and the output end of the second isolation circuit 123 is directly electrically connected to the second radiator 121.

Referring to fig. 24, fig. 24 is a schematic diagram of feeding points of a first radiator and a second radiator in an antenna assembly according to an embodiment of the present application. The first feeding point P1 of the first radiator 111 is located at the second sub-radiator 1112 or the third sub-radiator 1113, and when the first feeding point P1 on the first radiator 111 is located at a different position, the distribution of the current in the first antenna 110 is different.

The first feeding point P1 and the second feeding point P2 may be incorporated into the antenna assembly 10 according to any of the foregoing embodiments, and are illustrated in the schematic diagram of the present embodiment as being incorporated into the antenna assembly 10 shown in fig. 1.

In combination with the above embodiments, the length of the first radiator 111 is greater than the length of the second radiator 121, and the frequency band of the electromagnetic wave signal transmitted and received by the first antenna 110 is lower than the frequency band of the electromagnetic wave signal transmitted and received by the second antenna 120.

When the first radiator 111 includes a plurality of sub-radiators and the second radiator 121 includes a plurality of sub-radiators, the length of the first radiator 111 is greater than the length of the second radiator 121, meaning that the sum of the lengths of the plurality of sub-radiators in the first radiator 111 is greater than the sum of the lengths of the plurality of sub-radiators in the second radiator 121. The first radiator 111 in the antenna module 10 shown in fig. 3 includes a first sub-radiator 1111, a second sub-radiator 1112, and a third sub-radiator 1113; the second radiator 121 includes a fourth sub-radiator 1211 and a fifth sub-radiator 1212, as illustrated. For convenience of description, the length of the first radiator 111 is denoted by L ₁ The length of the second radiator 121 is denoted by L ₂ The length of the first sub-radiator 1111 is denoted by L ₁₁ The length of the second sub-radiator 1112 is denoted by L ₁₂ The length of the third sub-radiator 1113 is denoted by L ₁₃ The length of the fourth sub-radiator 1211 is denoted by L ₂₁ The length of the fifth sub-radiator 1212 is denoted as L ₂₂ . Then there is L ₁ ＝L ₁₁ +L ₁₂ +L ₁₃ ；L ₂ ＝L ₂₁ +L ₂₂ . The length of the first radiator 111 is greater than the length of the second radiator 121, i.e. L ₁ ＞L ₂ . In this embodiment, the length of the first radiator 111 is greater than that of the second radiator 121, and the frequency band of the electromagnetic wave signal received by the first antenna 110 is lower than that of the electromagnetic wave signal received by the second antenna 120, so that the antenna assembly 10 can cover more frequency bands when in operation, and the communication effect of the antenna assembly 10 is improved.

Referring to fig. 25, fig. 25 is a schematic diagram illustrating a gap between a first radiator and a second radiator in an antenna assembly according to an embodiment of the present disclosure. The size d of the gap between the first radiator 111 and the second radiator 121 is: d is more than or equal to 0.5mm and less than or equal to 2.0mm. It will be appreciated that in this embodiment, only one form of the antenna assembly 10 shown in fig. 1 is illustrated as an example and should not be construed as limiting the application. The gap dimension d between the first radiator 111 and the second radiator 121 is selected to be within the above range, so that a good coupling effect between the first radiator 111 and the second radiator 121 can be ensured. Further alternatively, 0.5 mm.ltoreq.d.ltoreq.1.5 mm, so that the coupling effect between the first radiator 111 and the second radiator 121 is better.

The first antenna 110 is used for receiving and transmitting electromagnetic wave signals in a first frequency band of GPS-L5, electromagnetic wave signals in a second frequency band of GPS-L1, electromagnetic wave signals in a third frequency band of WIFI-2.4G, electromagnetic wave signals in a fourth frequency band of LTE-4G MHB, and electromagnetic wave signals in a fifth frequency band of NR-5G MHB; the second antenna 120 is used for receiving and transmitting electromagnetic wave signals with a seventh frequency band of WIFI-5G, an eighth frequency band of N78, a ninth frequency band of N77, and a tenth frequency band of N79.

Referring to fig. 26, fig. 26 is a schematic RL curve diagram of a first antenna and a second antenna in the antenna assembly shown in fig. 1. The antenna module shown in fig. 1, the first antenna 110 is configured to receive and transmit electromagnetic wave signals in a GPS-L1 frequency band, electromagnetic wave signals in a GPS-L5 frequency band, electromagnetic wave signals in a WIFI 2.4G frequency band, electromagnetic wave signals in an LTE MHB frequency band, and electromagnetic wave signals in an N41 frequency band; the second antenna 120 is configured to receive and transmit electromagnetic wave signals in the WIFI 5G frequency band. The RL curve is a Return Loss curve, and english is called Return Loss, abbreviated as RL. In the present schematic, the abscissa is frequency, and the unit is MHz; the ordinate is RL in dB. In the present illustration, curve (1) (i.e., the curve of the solid line in the figure) is the RL curve of the first antenna 110, and curve (2) (i.e., the curve of the broken line in the figure) is the RL curve of the second antenna 120. As can be seen from the curve (1), the first antenna 110 has a first resonant mode a, a second resonant mode b, and a third resonant mode c, and the working frequency band of the first antenna 110 covers 1000MHz to 3000MHz; namely, the GPS-L1 band electromagnetic wave signal, the GPS-L5 band electromagnetic wave signal, the LTE MHB band electromagnetic wave signal, the WIFI 2.4G band electromagnetic wave signal, and the N41 band electromagnetic wave signal are supported. The first resonance mode a supports a GPS-L5 frequency band, the second resonance mode b supports a GPS-L1 frequency band, the third resonance mode c supports an LTE MHB frequency band and an N41 frequency band, and the second resonance mode b and the third resonance mode c support a WIFI 2.4G frequency band together. As can be seen from the curve (2), the second antenna 120 has a fifth resonant mode e and a sixth resonant mode f1, and the working frequency band of the second antenna 120 covers 4500MHz to 6500MHz; namely, electromagnetic wave signals supporting WIIFI 5.2G frequency bands and WIFI 5.8G frequency bands. The fifth resonance mode e supports an N79 frequency band, a WIFI 5.2G frequency band and the sixth resonance mode f1 supports a WIFI 5.8G frequency band. As can be seen from the present schematic diagram, the first resonant mode a to the sixth resonant mode f1 have higher efficiency bandwidths. As can be seen from the present schematic diagram, the antenna assembly 10 can cover Sub 6G frequency band, MHB frequency band and UHB frequency band, and the space utilization of the electronic device 1 to which the antenna assembly 10 is applied can be improved due to the small size of the antenna assembly 10.

In order to facilitate understanding of the aforementioned modes, the main current distribution on the first radiator 111 and the second radiator 121 in each mode is described in detail below in connection with each mode. Referring to fig. 27 and 28 together, fig. 27 is a schematic diagram of main current distribution corresponding to the first resonant mode. The first signal source 112 is configured to provide an excitation signal in a first frequency band, where the excitation signal in the first frequency band is used to excite the first radiator 111 to generate a first resonant mode a, and a resonant current of the first resonant mode a is distributed between the first ground terminal G1 and the first free terminal F1.

Specifically, in the present embodiment, the resonance current of the first resonance mode a flows from the first ground terminal G1 to the first free terminal F1.

Referring to fig. 28, fig. 28 is a schematic diagram of main current distribution corresponding to the second resonance mode. The first signal source 112 is further configured to provide an excitation signal for exciting the first radiator 111 to generate a second resonant mode b, and a resonant current of the second resonant mode b is distributed between the band-pass filter circuit 114 and the first free end F1. In an embodiment, the resonant current of the second resonant mode b flows from ground to the band-pass filter circuit 114 and is transmitted to the first free end F1 via the connection point P3.

Referring to fig. 29, the first signal source 112 is configured to provide an excitation signal to excite the first radiator 111 to generate a third resonant mode. The current of the third resonance mode is distributed between the first feeding point P1 and the first free end F1, and the third resonance mode is used for receiving and transmitting electromagnetic wave signals covering a third frequency band, a fourth frequency band and a fifth frequency band.

In this embodiment, the third frequency band includes a WIFI 2.4G frequency band, the fourth frequency band includes an LTE MHB frequency band, and the fifth frequency band includes an N41 frequency band. In other words, the first antenna 110 is further configured to transmit and receive electromagnetic wave signals in WIFI 2.4G band, electromagnetic wave signals in LTE MHB band, and electromagnetic wave signals in N41 band.

The WIFI 2.4G frequency band comprises 2.4 GHz-2.5 GHz; the LTE MHB Band is a medium-High frequency (Middle High Band), and its Band range is: 1000 MHz-3000 MHz. The N41 frequency band refers to electromagnetic wave signals with the frequency band range of 2496MHz-2690 MHz.

It should be noted that, when the first antenna 110 receives and transmits the electromagnetic wave signal of the first frequency band, the electromagnetic wave signal of the second frequency band, and is further used for receiving and transmitting the electromagnetic wave signal of the WIFI 2.4G frequency band, the electromagnetic wave signal of the LTE MHB frequency band, and the electromagnetic wave signal of the N41 frequency band, it means that the first antenna 110 can receive and transmit the electromagnetic wave signal of the first frequency band, the electromagnetic wave signal of the second frequency band, the electromagnetic wave signal of the WIFI 2.4G frequency band, the electromagnetic wave signal of the LTE MHB frequency band, and the electromagnetic wave signal of the N41 frequency band at the same time. The first antenna 110 of the present application can transmit and receive electromagnetic wave signals with more frequency bands, so that the communication performance of the antenna assembly 10 is better.

In an embodiment, referring to fig. 30, the second signal source 122 is configured to provide an excitation signal to excite the second radiator 121 to generate a fourth resonant mode and a fifth resonant mode, where the fourth resonant mode and the fifth resonant mode are used for receiving and transmitting electromagnetic wave signals covering the sixth frequency band.

Referring to fig. 30, the resonant current of the fourth resonant mode is distributed between the second ground terminal G2 and the second free terminal F2. Referring to fig. 31, the resonant current of the fifth resonant mode is distributed between the second feeding point P2 and the second free end F2.

In this embodiment, the sixth frequency band is a WIFI 5G frequency band. In other words, the second antenna 120 is configured to transmit and receive electromagnetic wave signals in the WIFI 5G frequency band. Specifically, in the present embodiment, the WIFI 5G band includes electromagnetic wave signals of WIFI 5.2G (corresponding to the fourth resonance mode d) and WIFI 5.8G (corresponding to the fifth resonance mode e) bands.

In an embodiment, the first isolation circuit 113 and the second isolation circuit 123 are configured to adjust a resonant frequency of the second antenna 120 according to a preset frequency selection parameter, so that the second antenna 120 resonates in a seventh resonant mode and an eighth resonant mode, where the seventh resonant mode is configured to cover transmission and reception of electromagnetic wave signals in an eighth frequency band and a ninth frequency band, and the eighth resonant mode is configured to cover transmission and reception of electromagnetic wave signals in a tenth frequency band.

Referring to fig. 26, the resonance current of the seventh resonance mode includes a first sub-current Ix and a second sub-current Iy, wherein the first sub-current Ix is distributed between the second free end F2 and the second ground end G2, and the second sub-current Iy is distributed between the second signal source 122 and the second feeding point P2; the resonance current of the eighth resonance mode is distributed between the second ground terminal G2 and the second free terminal F2.

In this embodiment, the seventh frequency band is an N78 frequency band (3.3 GHz to 3.8 GHz), the eighth frequency band is an N77 frequency band (3.3 GHz to 4.2 GHz), and the ninth frequency band is an N79 frequency band (4.4 GHz to 5.0 GHz). It will be appreciated that in other embodiments, the seventh frequency band, the eighth frequency band, and the ninth frequency band may be other frequency bands.

In order to enable the first antenna 110 and the second antenna 120 to support the modes described above, the first feeding point P1 on the first radiator 111 is disposed adjacent to a portion of the midpoint of the first radiator 111 near the second radiator 121, and the second feeding point P2 on the second radiator 121 is disposed adjacent to a gap between the second radiator 121 and the first radiator 111. Note that fig. 27 to 31 are main current distributions corresponding to each mode, and do not represent all current distributions in each mode. For example, in the first resonance mode a, the main current is distributed between the first ground G1 and the first free end F1. Due to the coupling of the first radiator 111 to said second radiator 121, there is also a galvanic coupling to the second radiator 121. For example, in the second resonance mode b and the third resonance mode c, the current distribution is also present on the second radiator 121, but in the second resonance mode b and the third resonance mode c, the main current is distributed on the first radiator 111, but not on the second radiator 121, and thus the current distribution on the second radiator 121 is not illustrated. Similarly, in the fifth to sixth resonance modes e to f1, a main current is distributed to the second radiator 121, and a current is distributed to the first radiator 111 due to the coupling action between the first radiator 111 and the second radiator 121.

Referring to fig. 32, fig. 32 is a schematic RL curve diagram of a first antenna and a second antenna in the antenna assembly shown in fig. 18. The first antenna 110 is used for receiving and transmitting electromagnetic wave signals in a first frequency band of GPS-L5 frequency band, electromagnetic wave signals in a second frequency band of GPS-L1 frequency band, electromagnetic wave signals in a third frequency band of WIFI 2.4G frequency band, electromagnetic wave signals in a fourth frequency band of LTE MHB frequency band, and electromagnetic wave signals in a fifth frequency band of NR MHB frequency band; the second antenna 120 is used for receiving and transmitting electromagnetic wave signals of the seventh frequency band of WIFI 5G, electromagnetic wave signals of the eighth frequency band of N78, electromagnetic wave signals of the ninth frequency band of N77, and electromagnetic wave signals of the tenth frequency band of N79. The RL curve is a Return Loss curve, and english is called Return Loss, abbreviated as RL. In the present schematic, the abscissa is frequency, and the unit is MHz; the ordinate is RL in dB. In the present schematic diagram, curve (1) (i.e., the curve of the solid line in the figure) is the RL curve of the first antenna 110, and curve (2) (i.e., the curve of the broken line in the figure) is the RL curve of the second antenna 120. As can be seen from the curve (1), the first antenna 110 has three modes of a, b and c, and the working frequency band of the first antenna 110 covers 1000MHz to 3000MHz; namely, the GPS-L5 band electromagnetic wave signal, the GPS-L1 band electromagnetic wave signal, the LTE MHB band electromagnetic wave signal, the WIFI 2.4G band electromagnetic wave signal, and the N41 band electromagnetic wave signal are supported. The first resonance mode a supports a GPS-L5 frequency band, the second resonance mode b supports a GPS-L1 frequency band, the third resonance mode c supports an LTE MHB frequency band and an N41 frequency band, and the second resonance mode b and the third resonance mode c support a WIFI 2.4G frequency band together. As can be seen from the curve (2), the second antenna 120 has three modes of a seventh resonance mode d, an eighth resonance mode e and a sixth resonance mode f1, and the working frequency band of the second antenna 120 covers 3000 MHz-6500 MHz; namely, electromagnetic wave signals supporting the WIFI 5G frequency band, the N78 frequency band, the N77 frequency band and the N79 frequency band. The seventh resonance mode d supports an N78 frequency band, the eighth resonance mode e supports an N77 frequency band and an N79 frequency band, and the fifth resonance mode f supports a WIFI 5G frequency band. As can be seen from the present schematic diagram, the modes a to f all have higher efficiency bandwidths, the positions of the feeding points P of the first radiators 111 of the first antenna 110 are different, and the distribution of the resonant currents on the first radiators 111 is different. In addition, as can be seen from the present schematic diagram, the antenna assembly 10 can cover Sub 6G frequency band, MHB frequency band and UHB frequency band, and the space utilization of the electronic device 1 to which the antenna assembly 10 is applied can be improved due to the small volume of the antenna assembly 10.

In order to facilitate understanding of the aforementioned modes, the main current distribution on the first radiator 111 and the second radiator 121 in each mode is described in detail below in connection with each mode. Referring to fig. 32 and fig. 33 to fig. 38, fig. 32 is a schematic diagram of main current distribution corresponding to the first resonance mode. The resonant current of the first resonant mode a is distributed between the first ground terminal G1 and the first free terminal F1.

Referring to fig. 34, fig. 34 is a schematic diagram of main current distribution corresponding to the second resonance mode. The first signal source 112 is further configured to provide an excitation signal for exciting the first radiator 111 to generate a second resonant mode b, and a resonant current of the second resonant mode b is distributed between the band-pass filter circuit 114 and the first free end F1. The third resonance mode is used for receiving and transmitting electromagnetic wave signals covering the third frequency band, the fourth frequency band and the fifth frequency band.

In an embodiment, the resonant current of the second resonant mode b flows from ground to the band-pass filter circuit 114 and is transmitted to the first free end F1 via the connection point P3.

Referring to fig. 35, fig. 35 is a schematic diagram of main current distribution corresponding to the third resonance mode. The current of the third resonance mode is distributed between the first feeding point P1 and the first free end F1, and the third resonance mode is used for receiving and transmitting electromagnetic wave signals covering a third frequency band, a fourth frequency band and a fifth frequency band. The resonance current of the fifth resonance mode is distributed between the second ground terminal G2 and the second free terminal F2.

In this embodiment, the resonant current of the third resonant mode flows from the first signal source 112 to the first feeding point P1, and is transmitted to the first free end F1 via the first feeding point P1.

Referring to fig. 36, fig. 36 is a schematic diagram of main current distribution corresponding to a seventh resonance mode. The seventh resonance mode is used for covering the receiving and transmitting of the electromagnetic wave signals in the eighth frequency band. The resonance current of the seventh resonance mode includes a first sub-current Ix and a second sub-current Iy, the first sub-current Ix is distributed between the second free end F2 and the second ground end G2, and the second sub-current Iy is distributed between the second signal source 122 and the second feeding point P2; the resonance current of the eighth resonance mode is distributed between the second ground terminal G2 and the second free terminal F2.

Specifically, the first sub-current Ix flows from the second free end F2 through the second feeding point P2, and flows to the second ground end G2 via the second feeding point P2. The second sub-current Iy flows from the second signal source 122 to the second feeding point P2.

Referring to fig. 37 together, fig. 37 is a schematic diagram of main current distribution corresponding to the eighth resonance mode. The eighth resonance mode is used for covering the receiving and transmitting of electromagnetic wave signals in the ninth frequency band and the tenth frequency band. The resonance current of the eighth resonance mode is distributed between the second ground terminal G2 and the second free terminal F2.

In this embodiment, the resonance current of the eighth resonance mode flows to the second free end F2 via the second ground end G2.

Referring to fig. 38 together, fig. 38 is a schematic diagram of main current distribution corresponding to the sixth resonant mode. The sixth resonance mode is used for receiving and transmitting electromagnetic wave signals covering the seventh frequency band. The resonance current of the sixth resonance mode is distributed between the second feeding point P2 and the second free end F2.

Specifically, in the present embodiment, the resonance current of the sixth resonance mode flows from the second signal source 122 to the second feeding point P2, and then flows to the second free end F2 via the second feeding point P2.

Note that the main current distribution shown in fig. 33 to 38 for each mode does not represent the entire current distribution in each mode. For example, the resonant current of the first resonant mode a is distributed between the first ground terminal G1 and the first free terminal F1; due to the coupling of the first radiator 111 to said second radiator 121, there is also a galvanic coupling to the second radiator 121. For example, in the second resonance mode b and the third resonance mode c, the current distribution is also present on the second radiator 121, but in the second resonance mode b and the third resonance mode c, the main current is distributed on the first radiator 111, but not on the second radiator 121, and thus the current distribution on the second radiator 121 is not illustrated. Similarly, in modes d to f1, the main current is distributed to the second radiator 121, and the current is distributed to the first radiator 111 due to the coupling action between the first radiator 111 and the second radiator 121.

Referring to fig. 39, the antenna assembly 10 further includes a first filter 31, a second filter 32, a third filter 33, and a detection device 40. The first filter 31 is electrically connected between the first ground G1 and the ground GND 1. The second filter 32 is electrically connected between the first feeding point P1 and the first signal source 112. The first filter 31 and the second filter 32 are used for blocking the induction signal generated by the first radiator 111 when the main body to be measured approaches and for conducting the radio frequency signal transmitted and received by the first radiator 111. One end of the third filter 33 is electrically connected to the first radiator 111. The other end of the third filter 33 is electrically connected to the detecting device 40. The third filter 33 is configured to block radio frequency signals transmitted and received by the radiator and sense signals generated by turning on the first radiator 111. The detection device 40 is configured to detect the magnitude of the induction signal generated by the first radiator 111.

Specifically, the first filter 31 and the second filter 32 are both capacitive devices. For example, the first filter 31 and the second filter 32 each include a capacitor. Further, the first filter 31 and the second filter 32 are both capacitors. The first filter 31 and the second filter 32 both have an isolating effect on the induction signal. In other words, the first filter 31 and the second filter 32 make the first radiator 111 in a "floating" state with respect to the sensing signal, so that when the human body approaches, the first radiator 111 can sense the change of the electric charge amount brought by the human body. The above-mentioned change of the charge amount forms an induction signal, which is transmitted to the detecting device 40 through the third filter 33, and the detecting device 40 determines whether the human body is close to the first radiator 111 of the antenna assembly 10 by detecting whether the above-mentioned induction signal is greater than or equal to a preset intensity value. The third filter 33 is configured to block the radio frequency signal received and transmitted by the first radiator 111 and conduct the induction signal, so that the radio frequency signal received and transmitted by the first radiator 111 does not affect the detection accuracy of the detection device 40 for detecting the induction signal.

It should be noted that, in the present application, the human body approaches the antenna assembly 10 when the distance between the skin surface of the human body and the antenna assembly 10 is less than or equal to x. When the distance between the skin surface of the human body and the antenna assembly 10 is equal to x, the intensity value of the sensing signal detected by the detecting device 40 is N, where N is a preset intensity value. When the detection device 40 detects that the intensity value of the induction signal is greater than or equal to N, the detection device 40 detects that the human body approaches the first radiator 111 of the antenna assembly 10.

By positioning one or more antenna assemblies 10 to determine the location of the first radiator 111 on the electronic device 100, the detection device 40 may detect the location of the human body near the electronic device 100 to reduce the power of the antenna assemblies 10 when the human head is near the electronic device 100 to reduce the specific absorption rate of electromagnetic waves by the human body. In addition, by arranging the antenna assembly 10 at the top, bottom and side of the display screen of the electronic device 100, the handheld state of the electronic device 100 can be intelligently detected, and the power of the antenna assembly 10 can be intelligently adjusted.

The first radiator 111, the first filter 31, the second filter 32, the third filter 33, and the detecting device 40 form a body proximity sensing structure to be measured. The main body to be tested comprises, but is not limited to, body parts such as the head, the hands and the like of a human body. Since the first radiator 111 can be used not only as a receiving/transmitting port for electromagnetic wave signals but also as a sensing electrode for proximity sensing signals, the antenna assembly 10 provided by the present application integrates dual functions of receiving/transmitting electromagnetic wave signals and proximity sensing, and the antenna assembly 10 has multiple functions and small volume. When the antenna assembly 10 is applied to the electronic device 100, the electronic device 100 is ensured to have a communication function and a proximity detection function, and the whole volume of the electronic device 100 is small.

Referring to fig. 40, the antenna assembly 10 further includes a fourth filter 34, a fifth filter 35, and a sixth filter 36. The fourth filter 34 is electrically connected between the second feeding point P2 and the second signal source 122. The fifth filter 35 is electrically connected between the second ground G2 and the ground GND 3. The fourth filter 34 and the fifth filter 35 are used for blocking the induction signal generated by the second radiator 121 when the main body to be measured approaches and conducting the radio frequency signal received by the second radiator 121. One end of the sixth filter 36 is electrically connected to the second radiator 121. The other end of the sixth filter 36 is electrically connected to the detecting device 40. The sixth filter 36 is used for blocking the radio frequency signals transmitted and received by the second radiator 121 and the induction signals generated by the second radiator 121.

In the present embodiment, the first radiator 111 and the second radiator 121 are both used as sensing electrodes, and the sensing range is increased. The specific principle can refer to the principle of the embodiment shown in fig. 39, and will not be described herein.

Referring to fig. 41, on the basis of the embodiment shown in fig. 40, only one filter for blocking the rf signal and conducting the induction signal may be provided, and the filter may be electrically connected to the first radiator 111 and/or the second radiator 121.

Referring to fig. 4 and fig. 5 together, fig. 4 is a perspective view of an electronic device according to an embodiment of the present disclosure; fig. 5 is a cross-sectional view taken along line I-I of fig. 4, in accordance with an embodiment. The electronic device 1 comprises an antenna assembly 10 according to any of the previous embodiments.

Referring to fig. 42 and 43 together, fig. 42 is a top view of a metal frame according to an embodiment of the present application; fig. 43 is a top view of a metal frame in another embodiment of the present application. The electronic device 1 includes a metal housing 20, a first signal source 112, a second signal source 122, and a band-pass filter circuit 114. The metal frame 20 includes a frame body 210, a first metal branch 220, and a second metal branch 230. The first metal branch 220 is spaced from the second metal branch 230 and is coupled to each other, one end of the first metal branch 220, which deviates from the second metal branch 230, is connected to the frame body 210, a gap is formed between the rest of the first metal branch 220 and the frame body 210, one end of the second metal branch 230, which deviates from the first metal branch 220, is connected to the frame body 210, a gap is formed between the rest of the second metal branch 230 and the frame body 210, the first metal branch 220 is electrically connected to the band-pass filter circuit 114 and is electrically connected to the ground, and the first metal branch 220 is electrically connected to the first signal source 112 to form the first antenna 110, and the second metal branch 230 is electrically connected to the second signal source 122 to form the second antenna 120.

In this embodiment, the first metal branch 220 is the first radiator 111, and the second metal branch 230 is the second radiator 121. In fig. 42, the corners of the first metal branch 220 and the second metal branch 230 corresponding to the frame body 210 are taken as an example; in fig. 43, the sides of the first metal branch 220 and the second metal branch 230 corresponding to the frame body 210 are illustrated as an example.

Since the larger piece of metal may form a ground electrode, the frame body 210 may form the ground electrode, and an end of the first metal branch 220 facing away from the second metal branch 230 is connected to the frame body 210, so that the first metal branch 220 is grounded; one end of the second metal branch 230 facing away from the first metal branch 220 is connected to the frame body 210, so that the second metal branch 230 is grounded.

The above is a structure of the antenna assembly 10 of the dual antenna unit, the antenna assembly 10 of the single antenna unit (for example, the antenna structure in fig. 2), and the antenna assembly 10 of other dual antenna units (for example, fig. 12) can also be integrated with the metal center in the manner described above.

Referring to fig. 41 again, the metal frame 20 includes a frame 240, the frame 240 is bent and connected to the periphery of the frame body 210, and the first metal branch 220 and the second metal branch 230 are formed on the frame 240.

In the present embodiment, the metal housing 20 is a middle frame 30 of the electronic device 1. When the first radiator 111 is electrically connected to the ground of the middle frame 30, the first radiator 111 may also be connected to the ground of the middle frame 30 through a connecting rib, or the first radiator 111 may also be electrically connected to the ground of the middle frame 30 through a conductive spring. Similarly, when the second radiator 121 is electrically connected to the ground of the middle frame 30, the second radiator 121 may also be connected to the ground of the middle frame 30 through a connecting rib, or the second radiator 121 may also be electrically connected to the ground of the middle frame 30 through a conductive spring.

The middle frame 30 is made of metal, such as aluminum magnesium alloy. The middle frame 30 generally forms a ground for the electronic device 1, and when the electronic components in the electronic device 1 need to be grounded, the middle frame 30 may be connected to ground. In addition, the ground system in the electronic device 1 includes, in addition to the middle frame 30, the ground on the circuit board 50 and the ground in the screen 40.

In this embodiment, the electronic device 1 further includes a screen 40, a circuit board 50, and a battery cover 60. The screen 40 may be a display screen with display function, or may be a screen 40 integrated with display and touch functions. The screen 40 is used for displaying text, images, video, etc. The screen 40 is carried on the middle frame 30 and is located at one side of the middle frame 30. The circuit board 50 is also typically carried by the center frame 30, and the circuit board 50 and the screen 40 are carried by opposite sides of the center frame 30. At least one or more of the first signal source 112, the second signal source 122, the first isolation circuit 113, and the second isolation circuit 123 of the antenna assembly 10 described above may be disposed on the circuit board 50. The battery cover 60 is disposed on a side of the circuit board 50 facing away from the middle frame 30, and the battery cover 60, the middle frame 30, the circuit board 50, and the screen 40 cooperate with each other to assemble a complete electronic device 1. It should be understood that the structural description of the electronic device 1 is merely a description of one form of the structure of the electronic device 1, and should not be construed as a limitation of the electronic device 1 or of the antenna assembly 10.

In other embodiments, the metal frame 20 may not be the middle frame 30, and only one metal frame 20 may be disposed inside the electronic device 1.

In other embodiments, the first radiator 111 is an FPC antenna radiator or an LDS antenna radiator, or a PDS antenna radiator, or a metal stub; the second radiator 121 is an FPC antenna radiator, an LDS antenna radiator, a PDS antenna radiator, or a metal branch. The first radiator 111 may be disposed at an edge of the middle frame 30 and electrically connected to the middle frame 30. It will be appreciated that in other embodiments, the first radiator 111 and the second radiator 121 may be arranged in other positions and electrically connected to the ground system in the electronic device 1. The ground system in the electronic device 1 includes a middle frame 30, a screen 40, and a circuit board 50, the first radiator 111 and the second radiator 121 are electrically connected to the ground system of the electronic device 1, and any one or more of the middle frame 30, the screen 40, and the circuit board 50 is electrically connected to the first radiator 111 and the second radiator 121.

In the present embodiment, the length L of the first metal branch 220 ₁ The method meets the following conditions: l1 is 20mm or more and 30mm or less, and the length L of the second metal branch 230 is ₂ The method meets the following conditions: l (L) ₂ ＜L ₁ The method comprises the steps of carrying out a first treatment on the surface of the The size d of the gap between the first metal dendrite 220 and the second metal dendrite 230 satisfies: d is more than or equal to 0.5mm and less than or equal to 2.0mm, and further optionally, d satisfies the following: d is more than or equal to 0.5mm and less than or equal to 1.5mm.

Since the first metal branch 220 is the first radiator 111, and the second metal branch 230 is the second radiator 121, in this embodiment, the length of the first metal branch 220 is defined by referring to the length of the first radiator 111, and the length of the second metal branch 230 is defined by referring to the length of the second radiator 121, which will not be described herein.

The length of the first metal branch 220 may be in a range such that the first antenna 110 supports electromagnetic signals of the GPS-L1 band, the GPS-L5 band, the WIFI 2.4G band, the LTE MHB band, and the N41 band. The second metal branch 230 is smaller than the length of the second metal branch 230, and the frequency band of the electromagnetic wave signal received by the first antenna 110 is lower than the frequency band of the electromagnetic wave signal received by the second antenna 120, so that the antenna assembly 10 can cover more frequency bands when in operation, in this embodiment, the antenna assembly 10 can cover Sub 6G frequency bands, MHB frequency bands and UHB frequency bands, thereby improving the communication effect of the antenna assembly 10.

Referring to fig. 44, fig. 44 is a schematic diagram illustrating a position of a first metal branch and a second metal branch in an electronic device according to an embodiment. In this embodiment, the electronic device 1 includes a top 1a and a bottom 1b, and the first metal branch 220 and the second metal branch 230 are both disposed on the top 1a. The top 1a is a portion of the electronic device 1 that is located above when in use, and the bottom 1b is a region located below the electronic device 1 opposite to the top 1a.

The electronic device 1 in this embodiment includes a first side 11, a second side 12, a third side 13, and a fourth side 14 that are connected end to end in order. The first side 11 and the third side 13 are short sides of the electronic device 1, and the second side 12 and the fourth side 14 are long sides of the electronic device 1. The first edge 11 is opposite to the third edge 13 and is arranged at intervals, the second edge 12 is opposite to the fourth edge 14 and is arranged at intervals, the second edge 12 is respectively connected with the first edge 11 and the third edge 13 in a bending manner, and the fourth edge 14 is respectively connected with the first edge 11 and the third edge 13 in a bending manner. The connection between the first edge 11 and the second edge 12, the connection between the second edge 12 and the third edge 13, the connection between the third edge 13 and the fourth edge 14, and the connection between the fourth edge 14 and the first edge 11 all form the corners of the electronic device 1. The first side 11 is a top side, the second side 12 is a right side, the third side 13 is a lower side, and the fourth side 14 is a left side. The angle formed by the first edge 11 and the second edge 12 is an upper right angle, and the angle formed by the first edge 11 and the fourth edge 14 is an upper left angle.

The top 1a includes three cases: the first radiator 111 and the second radiator 121 are disposed at the upper left corner of the electronic device 1; alternatively, the first radiator 111 and the second radiator 121 are disposed on the top side of the electronic device 1; or the first radiator 111 and the second radiator 121 are disposed at an upper right corner of the electronic device 1.

When the first radiator 111 and the second radiator 121 are disposed at the upper left corner of the electronic device 1, the following cases are included: a portion of the first radiator 111 is located on the left side, another portion of the first radiator 111 is located on the top side, and the second radiators 121 are all located on the top side; alternatively, the second radiator 121 is partially located at the top edge, the other part of the second radiator 121 is located at the left, and the first radiator 111 is located at the left.

When the first radiator 111 and the second radiator 121 are disposed at the upper right corner of the electronic device 1, the following cases are included: the first radiator 111 is partially located at the top edge, the other part of the first radiator 111 is located at the right side, and the second radiator 121 is located at the right side; alternatively, the second radiator 121 is partially located on the right, the second radiator 121 is partially located on the top side, and the first radiator 111 is partially located on the top side.

When the electronic device 1 is placed in a three-dimensional position, the top 1a of the electronic device 1 is generally facing away from the ground, while the bottom 1b of the electronic device 1 is generally close to the ground. When the first radiator 111 and the second radiator 121 are disposed on the top 1a, the upper hemispheres of the first antenna 110 and the second antenna 120 have better radiation efficiency, so that the first antenna 110 and the second antenna 120 have better communication efficiency. Of course, in other embodiments, the first radiator 111 and the second radiator 121 may be disposed corresponding to the bottom 1b of the electronic device 1, and when the first radiator 111 and the second radiator 121 are disposed corresponding to the bottom 1b of the electronic device 1, the upper hemispherical radiation efficiency of the first antenna 110 and the second antenna 120 is not so good, but may have a better communication effect as long as the upper hemispherical radiation efficiency is equal to or higher than a predetermined efficiency.

Referring to fig. 45, fig. 45 is a schematic diagram illustrating a position of the first radiator and the second radiator in the electronic device according to another embodiment. The electronic device 1 in this embodiment includes a first side 11, a second side 12, a third side 13, and a fourth side 14 that are connected end to end in order. The first side 11 and the third side 13 are short sides of the electronic device 1, and the second side 12 and the fourth side 14 are long sides of the electronic device 1. The first edge 11 is opposite to the third edge 13 and is arranged at intervals, the second edge 12 is opposite to the fourth edge 14 and is arranged at intervals, the second edge 12 is respectively connected with the first edge 11 and the third edge 13 in a bending manner, and the fourth edge 14 is respectively connected with the first edge 11 and the third edge 13 in a bending manner. The connection between the first edge 11 and the second edge 12, the connection between the second edge 12 and the third edge 13, the connection between the third edge 13 and the fourth edge 14, and the connection between the fourth edge 14 and the first edge 11 all form the corners of the electronic device 1. The first radiator 111 and the second radiator 121 may be disposed corresponding to any one corner of the electronic device 1, and it should be noted that the first radiator 111 and the second radiator 121 are disposed corresponding to the same corner of the electronic device 1. When the first radiator 111 and the second radiator 121 are disposed corresponding to the corners of the electronic device 1, the efficiency of the first antenna 110 and the second antenna 120 is high. It should be understood that, in the present embodiment, the first side 11 and the third side 13 are short sides of the electronic device 1, and the second side 12 and the fourth side 14 are long sides of the electronic device 1, and in other embodiments, the lengths of the first side 11, the second side 12, the third side 13, and the fourth side 14 are equal.

Of course, in other embodiments, the number of antenna assemblies 10 is multiple. For example, the number of the antenna assemblies 10 is two, and the metal stubs of the two antenna assemblies 10 can also be provided at two diagonal corners disposed along the diagonal corners. The approach of the human body is detected on more sides and in a larger range of the electronic device 100 by a smaller number, and in addition, the corners are difficult to be shielded, so that the signal quality of the electronic device 100 in the use process is improved.

While embodiments of the present application have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the present application, and that variations, modifications, alternatives and alterations of the above embodiments may be made by those skilled in the art within the scope of the present application, which are also to be regarded as being within the scope of the protection of the present application.

Claims

1. An antenna assembly, the antenna assembly comprising:

the first antenna comprises a first radiator, a first signal source and a band-pass filter circuit, wherein the first radiator comprises a first grounding end and a first free end, a first feed point and a connecting point are arranged between the first grounding end and the first free end, the first radiator is electrically connected with the first signal source at the first feed point, the first radiator is also electrically connected with the band-pass filter circuit to the ground at the connecting point, the band-pass filter circuit is equivalent to an inductance unit at a first frequency band, the band-pass filter circuit is equivalent to a capacitance unit at a second frequency band,

The first signal source is used for providing an excitation signal of the first frequency band, the excitation signal of the first frequency band is used for exciting the first radiator to generate a first resonance mode, and resonance current of the first resonance mode is distributed between the first grounding end and the first free end; the first signal source is further used for providing an excitation signal to excite the first radiator to generate a third resonance mode, and the current of the third resonance mode is distributed between the first feed point and the first free end; the third resonance mode is used for covering a third frequency band, and the band-pass filter circuit is equivalent to an inductance element in the third frequency band;

the first signal source is further used for providing an excitation signal of the second frequency band, the excitation signal of the second frequency band is used for exciting the first radiator to generate a second resonance mode, and resonance current of the second resonance mode is distributed between the band-pass filter circuit and the first free end.

2. The antenna assembly of claim 1, wherein the band pass filter circuit comprises a series circuit of an inductance and a capacitance.

3. The antenna assembly of claim 1, wherein the first frequency band comprises a GPS-L5 frequency band and the second frequency band comprises a GPS-L1 frequency band.

4. The antenna assembly of claim 3, wherein the band-pass filter circuit comprises a first capacitor unit and a first inductor unit, one end of the first capacitor unit and one end of the first inductor unit are electrically connected to the first ground terminal, and the other end of the first capacitor unit and the other end of the first inductor unit are electrically connected to ground.

5. The antenna assembly of claim 4, wherein the band-pass filter circuit further comprises a second inductance unit, one end of the second inductance unit is electrically connected to a connection node between the other end of the first capacitance unit and the other end of the first inductance unit, and the other end of the second inductance unit is grounded.

6. The antenna assembly of claim 4, wherein the band-pass filter circuit further comprises a second inductive element, one end of the second inductive element being electrically connected to the first ground terminal, and the other end of the second inductive element being electrically connected to one end of the first capacitive element.

7. The antenna assembly of claim 1, wherein the second resonant mode and the third resonant mode are configured to cover transmission and reception of electromagnetic wave signals in a third frequency band, a fourth frequency band and a fifth frequency band, the third frequency band including a WIFI-2.4G frequency band, the fourth frequency band including an LTE-4G MHB frequency band, and the fifth frequency band including an NR-5G MHB frequency band.

8. The antenna assembly of claim 1, wherein the first ground is co-located with the connection point.

9. The antenna assembly of claim 8 wherein the first signal source is further configured to provide an excitation signal to excite the first radiator to generate a fourth resonant mode, a current of the fourth resonant mode being distributed between the first ground terminal and the first feed point and between the first free terminal and the first feed point, the fourth resonant mode being configured to cover transmission and reception of electromagnetic wave signals in a sixth frequency band, the sixth frequency band including a WIF-5G frequency band, the band pass filter circuit being inductive in the sixth frequency band.

10. The antenna assembly of claim 1, wherein the first ground terminal is spaced apart from the connection point, the connection point being away from the first free end as compared to the first feed point.

11. The antenna assembly according to any one of claims 1-10, further comprising a second antenna, wherein the second antenna comprises a second radiator and a second signal source, the second radiator comprises a second ground end and a second free end, the second ground end is grounded, the second free end is opposite to the first free end, a second feed point is arranged between the second ground end and the second free end, the second radiator is electrically connected with the second signal source at the second feed point, the second signal source is used for providing an excitation signal to excite the second radiator to generate a fifth resonance mode and a sixth resonance mode, the fifth resonance mode and the sixth resonance mode are used for covering the transceiving of electromagnetic wave signals of a seventh frequency band, and the seventh frequency band is a WIFI-5G frequency band.

12. The antenna assembly of claim 11, wherein a resonant current of the fifth resonant mode is distributed between a second ground terminal and the second free terminal; the resonance current of the sixth resonance mode is distributed between the second feeding point and the second free end, between the first free end and the first feeding point, and between the first grounding end and the first feeding point.

13. The antenna assembly of claim 11, wherein the first antenna further comprises a first isolation circuit, the first feed point electrically connects the first isolation circuit to the first signal source, the second antenna further comprises a second isolation circuit, the second feed point electrically connects the second isolation circuit to the second signal source, the first isolation circuit and the second isolation circuit are configured to isolate the first antenna and the second antenna.

14. The antenna assembly of claim 13, wherein the first isolation circuit and the second isolation circuit are configured to adjust a resonant frequency of the second antenna according to a preset frequency selection parameter, so that the second antenna resonates in a seventh resonant mode and an eighth resonant mode, wherein the seventh resonant mode is configured to cover transmission and reception of electromagnetic wave signals in an eighth frequency band and a ninth frequency band, the eighth resonant mode is configured to cover transmission and reception of electromagnetic wave signals in a tenth frequency band, the eighth frequency band is an N78 frequency band, the ninth frequency band is an N77 frequency band, and the tenth frequency band is an N79 frequency band.

15. The antenna assembly of claim 14, wherein the resonant current of the seventh resonant mode comprises a first sub-current and a second sub-current, the first sub-current being distributed between the second free end and the second ground end, the second sub-current being distributed between the second signal source and the second feed point; the resonance current of the eighth resonance mode is distributed between the second grounding end and the second free end.

16. The antenna assembly of claim 13, wherein the first isolation circuit comprises a first impedance tuning circuit, a first band-stop circuit, and a first filter circuit, wherein one end of the first impedance tuning circuit is electrically connected to the first signal source, the other end of the first impedance tuning circuit is electrically connected to one end of the first band-stop circuit, the other end of the first band-stop circuit is electrically connected to one end of the first filter circuit, the other end of the first filter circuit is electrically connected to a first feed point of the first radiator, the first impedance tuning circuit is used for tuning impedance matching of the first radiator, the first band-stop circuit is used for forming a band-stop characteristic in a first preset frequency band, and the first filter circuit is used for filtering radio frequency signals in the first preset frequency band.

17. The antenna assembly of claim 16, wherein the first filter circuit comprises a first sub-capacitor having one end electrically connected to a first feed point of the first radiator and the other end grounded; the first band-stop circuit comprises a second sub-capacitor and a first sub-inductor which are connected in parallel; the first impedance tuning circuit comprises a third sub-capacitor, a fourth sub-capacitor and a second sub-inductor, one end of the second sub-inductor is electrically connected with one end of the first band-stop circuit, which is far away from the first filter circuit, the other end of the second sub-inductor is grounded, one end of the third sub-capacitor is electrically connected with one end of the second sub-inductor, the other end of the third sub-capacitor is grounded, one end of the fourth sub-capacitor is electrically connected with one end of the second sub-inductor, and the other end of the fourth sub-capacitor is electrically connected with the second signal source.

18. The antenna assembly of claim 13, wherein the second isolation circuit includes a second impedance tuning circuit, a second band-stop circuit, and a second filter circuit, one end of the second impedance tuning circuit is electrically connected to the second signal source, the other end of the second impedance tuning circuit is electrically connected to one end of the second band-stop circuit, the other end of the second band-stop circuit is electrically connected to one end of the second filter circuit, the other end of the second filter circuit is electrically connected to a second feed point of the second radiator, the second impedance tuning circuit is used for tuning impedance matching of the second radiator, the second band-stop circuit is used for forming a band-stop characteristic in a second preset frequency band, and the second filter circuit is used for filtering radio frequency signals in the second preset frequency band.

19. The antenna assembly of claim 18, wherein the second filter circuit comprises a third sub-inductance, one end of the third sub-inductance being electrically connected to the second feed point of the second radiator, the other end of the third sub-inductance being grounded; the second band-stop circuit comprises a fifth sub-capacitor and a fourth sub-inductor which are connected in parallel; the second impedance tuning circuit comprises a sixth sub-capacitor and a fifth sub-inductor, one end of the sixth sub-capacitor is electrically connected with one end of the second band-stop circuit, which is far away from the second filter circuit, the other end of the sixth sub-capacitor is grounded, one end of the fifth sub-inductor is electrically connected with one end of the sixth sub-capacitor, and the other end of the fifth sub-inductor is electrically connected with the first signal source.

20. The antenna assembly of claim 13, wherein the first isolation circuit comprises one or more sub-isolation circuits, the second isolation circuit comprises one or more sub-isolation circuits comprising one or more of the following circuits;

a band-pass circuit formed by serially connecting an inductor and a capacitor;

the band-stop circuit is formed by connecting the inductor and the capacitor in parallel;

the inductor is connected with the first capacitor in parallel, and the second capacitor is electrically connected with a node where the inductor is electrically connected with the first capacitor;

The capacitor is connected with the first inductor in parallel, and the second inductor is electrically connected with a node where the capacitor is electrically connected with the first inductor;

the inductor is connected with the first capacitor in series, one end of the second capacitor is electrically connected with the first end of the inductor, which is not connected with the first capacitor, and the other end of the second capacitor is electrically connected with the end of the first capacitor, which is not connected with the inductor;

the capacitor is connected in series with the first inductor, one end of the second inductor is electrically connected with one end of the capacitor, which is not connected with the first inductor, and the other end of the second inductor is electrically connected with one end of the first inductor, which is not connected with the capacitor;

the capacitor comprises a first capacitor, a second capacitor, a first inductor and a second inductor, wherein the first capacitor is connected with the first inductor in parallel, the second capacitor is connected with the second inductor in parallel, and one end of an integral formed by connecting the second capacitor with the second inductor in parallel is electrically connected with one end of an integral formed by connecting the first capacitor with the first inductor in parallel;

the first capacitor is connected with the first inductor in series to form a first unit, the second capacitor is connected with the second inductor in series to form a second unit, and the first unit is connected with the second unit in parallel.

21. The antenna assembly of claim 1, wherein the first radiator comprises a first sub-radiator, a second sub-radiator, and a third sub-radiator, one end of the first sub-radiator is the first ground end, the other end of the first sub-radiator is connected with the second sub-radiator in a bending manner, the second sub-radiator is provided with the connection point and the first feeding point, the other end of the second sub-radiator is connected with the third sub-radiator in a bending manner, the third sub-radiator and the first sub-radiator are both located on the same side of the second sub-radiator, one end of the third sub-radiator, which is away from the second sub-radiator, is the first free end, the antenna assembly further comprises a second antenna, the second antenna comprises a second radiator, the second radiator comprises a fourth sub-radiator, and a fifth sub-radiator, one end of the fourth sub-radiator is arranged opposite to the first free end and is away from the fourth sub-radiator, the other end of the fourth sub-radiator is connected with the fifth sub-radiator in a bending manner, and the other end of the fourth sub-radiator is connected with the fifth radiator.

22. The antenna assembly of claim 1, wherein the first radiator comprises a first sub-radiator and a second sub-radiator which are connected in a bending manner, one end of the first sub-radiator, which faces away from the second sub-radiator, is the first grounding end, the second sub-radiator is provided with the connecting point and the first feeding point, one end of the second sub-radiator, which faces away from the first sub-radiator, is the first free end, the antenna assembly further comprises a second antenna, the second antenna comprises a second radiator, the second radiator comprises a third sub-radiator, a fourth sub-radiator and a fifth sub-radiator which are connected in a bending manner in sequence, the third sub-radiator and the fifth sub-radiator are all located on the same side of the fourth sub-radiator, one end of the third sub-radiator is opposite to the first free end and is arranged at intervals, and one end of the fifth sub-radiator, which faces away from the fourth sub-radiator, is grounded.

23. The antenna assembly of claim 1, wherein the first radiator comprises a first sub-radiator and a second sub-radiator which are connected in a bending manner, one end of the first sub-radiator, which is away from the second sub-radiator, is the first grounding end, the second sub-radiator is provided with the connecting point and the first feeding point, one end of the second sub-radiator, which is away from the first sub-radiator, is the first free end, the antenna assembly further comprises a second antenna, the second antenna comprises a second radiator, the second radiator comprises a third sub-radiator and a fourth sub-radiator which are connected in a bending manner, one end of the third sub-radiator, which is away from the fourth sub-radiator, is arranged at intervals with the first free end, and one end of the fourth sub-radiator, which is away from the third sub-radiator, is grounded.

24. The antenna assembly of claim 11, further comprising a first filter, a second filter, a third filter, and a detection device, wherein the first filter is electrically connected between the first ground terminal and the ground electrode, the second filter is electrically connected between the first feeding point and the first signal source, and the first filter and the second filter are both used for blocking an induction signal generated by the first radiator when the main body to be measured approaches and conducting a radio frequency signal transmitted and received by the first radiator; one end of the third filter is electrically connected with the first radiator, the other end of the third filter is electrically connected with the detection device, the third filter is used for blocking radio frequency signals transmitted and received by the radiator and conducting induction signals generated by the first radiator, and the detection device is used for detecting the magnitude of the induction signals generated by the first radiator.

25. The antenna assembly of claim 24 further comprising a fourth filter, a fifth filter and a sixth filter, wherein the fourth filter is electrically connected between the second feeding point and the second signal source, the fifth filter is electrically connected between the second ground and the ground, and the fourth filter and the fifth filter are both used for blocking an induction signal generated by the second radiator when the main body to be measured approaches and conducting a radio frequency signal transmitted and received by the second radiator; one end of the sixth filter is electrically connected with the second radiator, the other end of the sixth filter is electrically connected with the detection device, and the sixth filter is used for blocking radio frequency signals transmitted and received by the second radiator and conducting induction signals generated by the second radiator.

26. An electronic device comprising an antenna assembly according to any of claims 1-25.

27. The electronic device of claim 26, wherein the antenna assembly further comprises a second antenna, the second antenna comprising a second radiator, the electronic device comprising a metal frame, the metal frame further comprising a metal frame and a rim, the rim being crimped to connect to a perimeter of the metal frame, the first radiator and the second radiator being formed on the rim.

28. The electronic device of claim 26, wherein the antenna assembly further comprises a second antenna comprising a second radiator, the electronic device comprising a top and a bottom, the first radiator and the second radiator both disposed on the top.