CN113013593B

CN113013593B - Antenna assembly and electronic equipment

Info

Publication number: CN113013593B
Application number: CN202110206591.8A
Authority: CN
Inventors: 吴小浦
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2021-02-24
Filing date: 2021-02-24
Publication date: 2023-06-27
Anticipated expiration: 2041-02-24
Also published as: CN113013593A

Abstract

The application provides an antenna assembly and electronic equipment. The antenna assembly comprises a first antenna and a second antenna. The first antenna comprises a first radiator and a first signal source, wherein the first radiator is provided with a first feed point, and the first signal source is electrically connected to the first feed point. The second antenna comprises a second radiator, a second signal source and a third signal source, wherein a first gap is formed between the second radiator and the first radiator, and the second radiator is capacitively coupled with the first radiator through the first gap, so that the first signal source receives and transmits electromagnetic wave signals of a first frequency band through the first radiator and part of the second radiator, the second radiator is provided with a second feed point and a third feed point which are arranged at intervals, and the second signal source is electrically connected with the second feed point, so that the second antenna receives and transmits electromagnetic wave signals of a second frequency band; the third signal source is electrically connected with the third feed point so that the second antenna receives and transmits electromagnetic wave signals of a third frequency band. 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:

a first antenna comprising a first radiator having a first feed point and a first signal source electrically connected to the first feed point;

the second antenna comprises a second radiator, a second signal source and a third signal source, a first gap is formed between the second radiator and the first radiator, the second radiator and the first radiator are capacitively coupled through the first gap, so that the first signal source receives and transmits electromagnetic wave signals of a first frequency band through the first radiator and part of the second radiator, the second radiator is provided with a second feed point and a third feed point which are arranged at intervals, the second feed point is adjacent to the first radiator compared with the third feed point, and the second signal source is electrically connected with the second feed point, so that the second antenna receives and transmits electromagnetic wave signals of a second frequency band; the third signal source is electrically connected with the third feed point, so that the second antenna receives and transmits electromagnetic wave signals of a third frequency band.

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

According to the antenna assembly, the transmission and reception of the electromagnetic wave signals of the first frequency band, the electromagnetic wave signals of the second frequency band and the electromagnetic wave signals of the third frequency band can be achieved by using fewer antenna radiators, and the coverage of a wider frequency band is achieved, 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 an antenna assembly according to an embodiment of the present application.

Fig. 2 is a schematic diagram of components of the antenna assembly shown in fig. 1 corresponding to receiving and transmitting electromagnetic wave signals in a first frequency band.

Fig. 3 is a schematic diagram of a return loss curve of the antenna assembly shown in fig. 1 for transmitting and receiving electromagnetic wave signals in the first frequency band.

Fig. 4 is a schematic diagram of a component of the antenna assembly shown in fig. 1 corresponding to receiving and transmitting electromagnetic wave signals in a second frequency band.

Fig. 5 is a schematic diagram of a second matching circuit according to an embodiment of the present application.

Fig. 6 is a schematic diagram of a second matching circuit according to another embodiment of the present application.

Fig. 7 is a schematic diagram of a return loss curve of the antenna assembly shown in fig. 1 for transmitting and receiving electromagnetic wave signals in the second frequency band.

Fig. 8 is a schematic diagram of a component of the antenna assembly in fig. 1 corresponding to receiving and transmitting electromagnetic wave signals in a third frequency band.

Fig. 9 is a schematic diagram of a return loss curve of the antenna assembly shown in fig. 1 for transmitting and receiving electromagnetic wave signals in the third frequency band.

Fig. 10 is a schematic diagram of an antenna assembly according to another embodiment of the present application.

Fig. 11 is a schematic diagram of a component of the antenna assembly shown in fig. 10 corresponding to receiving and transmitting electromagnetic wave signals in the fourth frequency band.

Fig. 12 is a schematic view of an antenna assembly according to another embodiment of the present application.

Fig. 13 is a schematic diagram of a return loss curve of the antenna assembly shown in fig. 10 for transmitting and receiving electromagnetic wave signals in the fourth frequency band.

Fig. 14 is a schematic view of an antenna assembly according to another embodiment of the present application.

Fig. 15 is a schematic view of an antenna assembly according to another embodiment of the present application.

Fig. 16 is a schematic diagram of an antenna assembly according to another embodiment of the present application.

Fig. 17 is a perspective view of an electronic device according to an embodiment of the present application.

Fig. 18 is a cross-sectional view taken along line I-I of fig. 17, in accordance with an embodiment.

Fig. 19 is a top view of a metal frame according to an embodiment of the present disclosure.

Fig. 20 is a schematic view of an electronic device in a portrait state.

Fig. 21 is a schematic view of an electronic device in a landscape state.

Fig. 22 is a schematic diagram of an electronic device according to another 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 may be applied to an electronic device 1, and 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 and a second antenna 120. The first antenna 110 includes a first radiator 111 and a first signal source 112, the first radiator 111 has a first feeding point P1, and the first signal source 112 is electrically connected to the first feeding point P1. The second antenna 120 includes a second radiator 121, a second signal source 122, and a third signal source 123, a first slot 1211 is formed between the second radiator 121 and the first radiator 111, and the second signal source 122 is capacitively coupled to the first radiator 111 through the first slot 1211, so that the first signal source 112 receives and transmits electromagnetic wave signals of a first frequency band via the first radiator 111 and a portion of the second radiator 121, the second radiator 121 has a second feeding point P2 and a third feeding point P3 that are disposed at intervals, the second feeding point P2 is disposed adjacent to the first radiator 111 compared with the third feeding point P3, and the second signal source 122 is electrically connected to the second feeding point P2, so that the second antenna 120 receives and transmits electromagnetic wave signals of a second frequency band; the third signal source 123 is electrically connected to the third feeding point P3, so that the second antenna 120 receives and transmits electromagnetic wave signals in a third frequency band.

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 signal source 112 is configured to generate a first excitation signal, which is loaded on the first radiator 111, so that the first radiator 111 radiates an electromagnetic wave signal. The second signal source 122 is configured to generate a second excitation signal, which is loaded on the second radiator 121, so that the second radiator 121 radiates an electromagnetic wave signal. The third signal source 123 is configured to generate a third excitation signal, which is loaded on the third radiator 131, so that the third radiator 131 radiates an electromagnetic wave signal. When the antenna assembly 10 is applied in an electronic device 1 (see fig. 18), the first signal source 112 may be disposed on a circuit board 50 (see fig. 18) in the electronic device 1. The second signal source 122 may also be provided on the circuit board 50 in the electronic device 1. The third signal source 123 may also be provided on the circuit board of the electronic device 1.

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. In an embodiment, the second radiator 121 is of the same type as the first radiator 111. In another embodiment, the type of the second radiator 121 is different from the type of the first radiator 111.

The second radiator 121 has a first slit 1211 between the first radiator 111 and is capacitively coupled to the first radiator 111 through the first slit 1211, that is, the first radiator 111 and the second radiator 121 are co-caliber. In other words, the first radiator 111 and the second radiator 121 are spaced apart and coupled to each other.

The dimension d of the first gap 1211 between the first radiator 111 and the second radiator 121 ₁ The method comprises the following steps: d is less than or equal to 0.5mm ₁ Less than or equal to 2.0mm. Referring specifically to FIG. 1, the dimension d is illustrated in FIG. 1 ₁ . The dimension d of the first gap 1211 between the first radiator 111 and the second radiator 121 ₁ The above range is selected 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 ₁ And 1.5mm or less, so that the coupling effect between the first radiator 111 and the second radiator 121 is better.

When the antenna assembly 10 is in operation, the first excitation signal generated by the first signal source 112 may be coupled to the second radiator 121 via the first slot 1211, in other words, when the first antenna 110 is in operation, not only the first radiator 111 may be utilized, 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 operate in a wider frequency band. Likewise, when the antenna assembly 10 is operated, the second excitation signal generated by the second signal source 122 may be coupled to the first radiator 111 via the first slot 1211, in other words, when the second antenna 120 is operated, not only the second radiator 121 may be utilized, but also the first radiator 111 in the first antenna 110 may be utilized to transmit and receive electromagnetic wave signals, so that the second antenna 120 may operate in a wider frequency band. Since the first antenna 110 can use not only the first radiator 111 but also the second radiator 121 when operating, and the second antenna 120 can use not only the second radiator 121 but also the first radiator 111 when operating, multiplexing of the radiators is achieved, multiplexing of space is also achieved, and the size of the antenna assembly 10 is reduced. When the antenna assembly 10 is applied to the electronic device 1, a stacking space for stacking the antenna assembly 10 in the electronic device 1 can be saved.

In this embodiment, the first frequency Band is a Mid High Band (MHB) and an Ultra High Band (UHB), that is, an mhb+uhb frequency Band, the second frequency Band is a GPS-L5 frequency Band, and the third frequency Band is a Lower Band (LB) frequency Band. It should be noted that the frequency range of the MHB is 1000MHz-3000MHz, and the frequency range of the UHB is 3000MHz-6000MHz. The range of the LB frequency band is lower than 1000MHz. The LB frequency band is, for example, electromagnetic wave signals of all low frequency bands of 4G (also called Long Term Evolution, LTE) and 5G (also called New Radio, NR). GPS as referred to herein means positioning, including but not limited to Global positioning System (Global Positioning System, GPS) positioning, beidou positioning, GLONASS positioning, GALILEO positioning, and the like. The central resonance frequency point of the GPS-L5 frequency band is 1176MHz.

In combination with the foregoing description, the length of the first radiator 111 is smaller than that of the second radiator 121, and the first frequency band of the electromagnetic wave signal transmitted and received by the first antenna 110 is higher than that of the electromagnetic wave signal of the third frequency band transmitted and received by the second antenna 120.

In the related art, the second antenna 120 is only capable of receiving and transmitting electromagnetic wave signals in one frequency band, and if the antenna assembly 10 needs to support electromagnetic wave signals in the second frequency band, an additional antenna needs to be provided to support electromagnetic wave signals in the second frequency band; as can be seen, more antennas are required in the related art to support the electromagnetic wave signals in the first, second, and third frequency bands, which results in a larger size of the antenna assembly 10. In the antenna assembly 10 of the present embodiment, there is no need to provide an additional antenna to support the electromagnetic wave signal of the second frequency band, so the volume of the antenna assembly 10 is small. Providing additional antennas to support electromagnetic wave signals in the second frequency band may also result in higher cost of the antenna assembly 10; the difficulty of stacking the antenna assembly 10 with other devices increases when the antenna assembly 10 is applied in the electronic device 1. In this embodiment, the antenna assembly 10 does not need to be additionally provided with an antenna to support the electromagnetic wave signal of the second frequency band, so that the cost of the antenna assembly 10 is low; when the antenna module is applied to the electronic device 1, the stacking difficulty is low. In addition, providing an additional antenna to support electromagnetic wave signals in the second frequency band may also result in increased rf link insertion loss of the antenna assembly 10. In the antenna assembly 10 provided in the present application, the second antenna 120 can transmit and receive electromagnetic wave signals in the second frequency band and electromagnetic wave signals in the third frequency band, so as to reduce radio frequency link insertion loss.

In addition, in the antenna assembly 10 provided in this embodiment of the present application, the transmission and reception of the electromagnetic wave signals of the first frequency band, the electromagnetic wave signals of the second frequency band and the electromagnetic wave signals of the third frequency band can be implemented by using fewer antenna radiators, so that the coverage of a wider frequency band is implemented, and therefore, the antenna assembly 10 has a better communication effect.

With continued reference to fig. 1, in the present embodiment, the first antenna 110 further includes a first matching circuit M1 and a first adjusting circuit T1. The first signal source 112 electrically connects the first matching circuit M1 to the first feeding point P1. The first matching circuit M1 and the first adjusting circuit T1 are configured to adjust a resonant frequency of the electromagnetic wave signal of the first frequency band according to a preset frequency selection parameter, so as to implement carrier aggregation (Carrier Aggregation, CA) of the first frequency band and dual-connection (LTE NR Double Connect, ENDC) combination of the 4G radio access network and the 5G-NR.

In this embodiment, the resonant frequency of the electromagnetic wave signal in the first frequency band can be adjusted by setting the frequency selection parameters (including the capacitance value, the inductance value and the resistance value) of the first matching circuit M1 and the frequency selection parameters (including the capacitance value, the inductance value and the resistance value) of the first adjusting circuit T1, so as to realize the combination of CA and ENDC in the first frequency band.

In this embodiment, one end of the first adjusting circuit T1 is grounded, and the other end is electrically connected to the first matching circuit M1. The first adjusting circuit T1 may be connected in parallel with the first matching circuit M1, or connected in series. The first adjusting circuit T1 may be integrated with the first matching circuit M1 into one module, or may be a separate module from the first matching circuit M1. It will be appreciated that in other embodiments, the first adjusting circuit T1 is grounded at one end and electrically connected to the first radiator 111 at the other end (see fig. 14).

Referring to fig. 1 again, and referring to fig. 2 and fig. 3 together, fig. 2 is a schematic diagram of a component of the antenna assembly shown in fig. 1 corresponding to receiving and transmitting electromagnetic wave signals in a first frequency band; fig. 3 is a schematic diagram of a return loss curve of the antenna assembly shown in fig. 1 for transmitting and receiving electromagnetic wave signals in the first frequency band. In fig. 3, the horizontal axis is frequency in MHz; the vertical axis is Return Loss (RL) in dB. The second radiator 121 has a first connection O1, and the first connection O1 is located between the second feeding point P2 and the third feeding point P3. The second antenna 120 includes a second matching circuit M2 and a third matching circuit M3. In the schematic diagram of the present embodiment, the second matching circuit M2 is denoted by M2, and the third matching circuit M3 is denoted by M3. The second signal source 122 is electrically connected to the second matching circuit M2 to the second feeding point P2, and one end of the third matching circuit M3 is grounded, and the other end is electrically connected to the first connection O1; the first radiator 111 further has a first ground GND1 facing away from the first slit 1211, the first ground GND1 being grounded.

The eighth wavelength mode from the first ground GND1 to the first slot 1211 is used for supporting the transmission and reception of electromagnetic wave signals in the first sub-band, and is denoted as mode 1 in fig. 3 for convenience of illustration. The eighth wavelength mode of the first connection O1 to the first slot 1211 is used to support the transmission and reception of electromagnetic wave signals in the second sub-band, and is denoted as mode 2 in fig. 3 for convenience of illustration. The quarter wavelength mode from the first ground GND1 to the first slot 1211 is used for supporting the transmission and reception of electromagnetic wave signals in the third sub-band, and is denoted as mode 3 in fig. 3 for convenience of illustration. The quarter wavelength mode from the first feeding point P1 to the first slot 1211 is used for supporting the receiving and transmitting of electromagnetic wave signals in a fourth sub-band, wherein the first band includes the first sub-band, the second sub-band, the third sub-band and the fourth sub-band, and is labeled as mode 4 in fig. 3 for convenience of illustration. It should be noted that, the mode 1, the mode 2, the mode 3, and the mode 4 shown in fig. 3 are only one mode case of each sub-band included in the first frequency band, and the resonant frequency point of each sub-band can be adjusted by setting the frequency selection parameters of the first matching circuit M1 and the first adjusting circuit T1. In addition, the mode 3 and the mode 4 are adjusted by adjusting the frequency selection parameters of the first matching circuit M1 and the first adjusting circuit T1, so that the antenna assembly 10 can cover the WiFi-5G frequency band or a higher frequency band.

It should be noted that, the description of the mode 1 corresponding to the first sub-band included in the first frequency band, the mode 2 corresponding to the second sub-band, the mode 3 corresponding to the third sub-band, and the mode 4 corresponding to the fourth sub-band are descriptions of main features of the electromagnetic wave signal supporting the first frequency band, and when the modes of mode 1, mode 2, mode 3, and mode 4 are operated, the first radiator 111 and the second radiator 121 are not independent of each other, and since the first radiator 111 is coupled with the second radiator 121 through the first slit 1211, the current on the first radiator 111 is also coupled to the second radiator 121 through the coupling effect, and accordingly, the current on the second radiator 121 is also coupled to the first radiator 111 through the coupling effect.

As can be seen from fig. 3, the first frequency band is the mhb+uhb frequency band, and thus the antenna shown in fig. 2 is the first branch mhb+uhb antenna. As can be seen from fig. 3, the first branch mhb+uhb antenna can cover all mhb+uhb bands of long term evolution (Long Term Evolution, LTE) and all mhb+uhb bands of New Radio, NR) simultaneously. The MHB+UHB frequency band of the LTE comprises an LTE-1/2/3/4/7/32/40/41 frequency band, and the MHB+UHB frequency band of the NR comprises an NR-1/3/7/40/41/77/78/79 frequency band.

Referring to fig. 4, fig. 4 is a schematic diagram of a component of the antenna assembly shown in fig. 1 corresponding to receiving and transmitting electromagnetic wave signals in a second frequency band. In this embodiment, the eighth wavelength mode from the first connection O1 to the first slot 1211 is used to support the transmission and reception of the electromagnetic wave signal in the second frequency band.

In this embodiment, the second feeding point P2 is a capacitive coupling feeding, and the capacitive coupling feeding means that the second signal source 122 is electrically connected to a second matching circuit M2 in a feeding path formed by the second feeding point P2 via the second matching circuit M2, and the second matching circuit M2 is described in detail later. The impedance of the third matching circuit M3 is zero or greater than zero but relatively small. In other words, the second signal source 122 is capacitively coupled to the feed at the second feed point P2 and is grounded at a low impedance at the third matching circuit M3.

Referring to fig. 5, fig. 5 is a schematic diagram of a second matching circuit according to an embodiment of the present application. In this embodiment, the second matching circuit M2 includes a first capacitor C23, and the second signal source 122 is electrically connected to the second feeding point P2 via the first capacitor C23.

The second signal source 122 is electrically connected to the second feeding point P2 via the first capacitor C23, i.e. the second feeding point P2 is capacitively coupled fed. In other words, the first capacitor C23 is a capacitor of the capacitive coupling feed. The second matching circuit M2 includes a first capacitor C23 for exciting the electromagnetic wave signal in the second frequency band.

Further, in the present embodiment, the second matching circuit M2 further includes a band-pass filtering unit 1241 for band-pass filtering the electromagnetic wave signal of the second frequency band. One end of the band-pass filter unit 1241 is electrically connected to one end of the first capacitor C23 far away from the second feeding point P2, the other end of the band-pass filter unit 1241 is electrically connected to the second feeding point P2, and the band-pass filter unit 1241 includes a second capacitor C21 and an inductor L21 connected in series.

The band-pass filter 1241 performs band-pass filtering on the electromagnetic wave signals of the second frequency band, in other words, the band-pass filter 1241 may pass the electromagnetic wave signals of the second frequency band, and the electromagnetic wave signals of other frequency bands except the electromagnetic wave signals of the second frequency band are equivalent to a large inductance L21 or a small capacitance, and cannot pass the electromagnetic wave signals of other frequency bands. Therefore, the band-pass filter unit 1241 is configured to enable the electromagnetic wave signals of the second frequency band and the electromagnetic wave signals of other frequency bands to form a better isolation, so that the influence of the antenna for receiving and transmitting the electromagnetic wave signals of the second frequency band on other antennas is reduced to a greater extent.

The band-pass filter unit 1241 includes a second capacitor C21 and an inductor L21 connected in series, in this embodiment, one end of the second capacitor C21 is electrically connected to the first capacitor C23, and the other end of the second capacitor C21 is electrically connected to the first inductor L21 to the second feeding point P2.

Further, in this embodiment, the second matching circuit M2 further includes a third capacitor C22, one end of the third capacitor C22 is grounded, the other end of the third capacitor C22 is electrically connected to one end of the first capacitor C23 away from the second signal source 122, and the third capacitor C22 is used for adjusting a resonance frequency point of the second frequency band electromagnetic wave signal.

It should be understood that in fig. 5 and the related embodiments, the second matching circuit M2 includes the first capacitor C23, the band-pass filtering unit 1241, and the third capacitor C22 as an example, and in other embodiments, the second matching circuit M2 includes the first capacitor C23, and does not include the band-pass filtering unit 1241 and the third capacitor C22; alternatively, in other embodiments, the second matching circuit M2 includes the first capacitor C23 and the band-pass filtering unit 1241, but does not include the third capacitor C22.

Referring to fig. 6, fig. 6 is a schematic diagram of a second matching circuit according to another embodiment of the present application. In this embodiment, the second matching circuit M2 includes a first capacitor C23, and the second signal source 122 is electrically connected to the second feeding point P2 via the first capacitor C23.

Further, the second matching circuit M2 further includes a band-pass filtering unit 1241 for band-pass filtering the electromagnetic wave signal of the second frequency band. One end of the band-pass filter unit 1241 is electrically connected to one end of the first capacitor C23 far away from the second feeding point P2, the other end of the band-pass filter unit 1241 is electrically connected to the second feeding point P2, and the band-pass filter unit 1241 includes a second capacitor C21 and an inductor L21 connected in series.

The second matching circuit M2 in the present embodiment is different from the second matching circuit M2 in fig. 5 and the related description thereof in that, in the present embodiment, one end of the first inductor L21 is electrically connected to the first capacitor C23, and the other end of the first inductor L21 is electrically connected to the second capacitor C21 to the second feeding point P2.

Further, the second matching circuit M2 further includes a third capacitor C22, one end of the third capacitor C22 is grounded, the other end of the third capacitor C22 is electrically connected to one end of the first capacitor C23 away from the second signal source 122, and the third capacitor C22 is used for adjusting a resonance frequency point of the second frequency band electromagnetic wave signal.

Referring to fig. 7, fig. 7 is a schematic diagram of a return loss curve of the antenna assembly shown in fig. 1 for receiving and transmitting electromagnetic wave signals in the second frequency band. In fig. 7, the horizontal axis represents frequency in MHz; the vertical axis is Return Loss (RL) in dB. As can be seen from fig. 7, the second frequency band is a GPS-L5 frequency band, and the resonance frequency point of the second frequency band is 1176MHz.

Referring to fig. 1, fig. 8 and fig. 9 together, fig. 8 is a schematic diagram of a component of the antenna assembly in fig. 1 corresponding to receiving and transmitting electromagnetic wave signals in a third frequency band; fig. 9 is a schematic diagram of a return loss curve of the antenna assembly shown in fig. 1 for transmitting and receiving electromagnetic wave signals in the third frequency band. In fig. 9, the horizontal axis represents frequency in MHz; the vertical axis is Return Loss (RL) in dB. In this embodiment, the second radiator 121 further has a second connection O2, and the second connection O2 is located at an end of the third feeding point P3 facing away from the first feeding point P1. The second antenna 120 further has a fourth matching circuit M4 and a second adjusting circuit T2. The third signal source 123 of the second adjusting circuit T2 is electrically connected to the third feeding point P3 via the fourth matching circuit M4, and the fourth matching circuit M4 is used for impedance matching the second antenna 120; the second adjusting circuit T2 is electrically connected to the second connection O2, the second adjusting circuit T2 is configured to adjust a resonance frequency point of the third frequency band, and the second antenna 120 receives and transmits electromagnetic wave signals of the third frequency band from the first connection O1 to an end of the second radiator 121 facing away from the first slot 1211 through the second radiator 121.

In fig. 9, each mode (mode 5, mode 6, mode 7, mode 8) has only one mode at the same time. The second adjusting circuit T2 adjusts the resonance frequency point of the third frequency band, so that the resonance frequency points of the antenna assembly 10 when receiving and transmitting electromagnetic wave signals of the third frequency band are different, specifically referring to fig. 9, the resonance frequency points of the third frequency band corresponding to the mode 5, the mode 6, the mode 7 and the mode 8 are sequentially increased, in other words, the resonance frequency point of the third frequency band corresponding to the mode 5 is lowest, and the resonance frequency point of the third frequency band corresponding to the mode 8 is highest.

Referring to fig. 10 and 11, fig. 10 is a schematic diagram of an antenna assembly according to another embodiment of the present application; fig. 11 is a schematic diagram of a component of the antenna assembly shown in fig. 10 corresponding to receiving and transmitting electromagnetic wave signals in the fourth frequency band. In this embodiment, the antenna assembly 10 includes a first antenna 110 and a second antenna 120. The first antenna 110 and the second antenna 120 are described in the foregoing embodiments, and are not described herein. The antenna assembly 10 further includes a third antenna 130. The antenna assembly 10 of the present embodiment further includes a third antenna 130 that may be incorporated into any of the embodiments of the antenna assembly 10 including the first antenna 110 and the second antenna 120 described above. The third antenna 130 includes a third radiator 131 and a fourth signal source 132, the third radiator 131 has a fourth feeding point P4, a second gap 1212 is provided between the third radiator 131 and the second radiator 121, and the fourth signal source 132 is capacitively coupled to the second radiator 121 through the second gap 1212, so that the fourth signal source 132 transmits and receives electromagnetic wave signals of a fourth frequency band through the third radiator 131 and a part of the second radiator 121.

The third radiator 131 is an FPC antenna radiator, an LDS antenna radiator, a PDS antenna radiator, or a metal branch. In an embodiment, the third radiator 131 is of the same type as the first radiator 111. In another embodiment, the type of the second radiator 121 is different from the type of the first radiator 111.

In this embodiment, the third radiator 131 is disposed at an end of the second radiator 121 facing away from the first radiator 111. In other words, the third radiator 131 and the first radiator 111 are respectively disposed at opposite ends of the second radiator 121. The third radiator 131 and the second radiator 121 have a second gap 1212 therebetween, and are capacitively coupled to the second radiator 121 through the second gap 1212, and the third radiator 131 and the second radiator 121 are co-aperture. In other words, the third radiator 131 is spaced apart from the second radiator 121 and coupled to each other.

The dimension d of the second gap between the third radiator 131 and the second radiator 121 ₂ The method comprises the following steps: d is less than or equal to 0.5mm ₂ Less than or equal to 2.0mm. Referring specifically to FIG. 10, the dimension d is illustrated in FIG. 10 ₂ . The dimension d of the second gap 1212 between the third radiation and the second radiator 121 ₂ The above range is selected so that a good coupling effect between the third radiator 131 and the second radiator 121 can be ensured. Further alternatively, 0.5 mm.ltoreq.d ₂ And 1.5mm or less, so that the coupling effect between the third radiator 131 and the second radiator 121 is better.

The fourth signal source 132 is configured to generate a fourth excitation signal, which is loaded on the third radiator 131, so that the third radiator 131 radiates an electromagnetic wave signal. When the antenna assembly 10 is used in an electronic device 1 (see fig. 18), the fourth signal source 132 may be disposed on a circuit board 50 (see fig. 18) in the electronic device 1. When the antenna assembly 10 is in operation, the fourth excitation signal generated by the fourth signal source 132 may be coupled to the second radiator 121 via the second slot 1212, in other words, when the third antenna 130 is in operation, not only the third radiator 131 but also the second radiator 121 may be used to transmit and receive electromagnetic wave signals, so that the third antenna 130 may operate in a wider frequency band. Likewise, when the antenna assembly 10 is operated, the third excitation signal generated by the third signal source 123 may be coupled to the third radiator 131 via the second slot 1212, in other words, when the second antenna 120 is operated, not only the second radiator 121 may be utilized, but also the third radiator 131 may be utilized to transmit and receive electromagnetic wave signals, so that the second antenna 120 may operate in a wider frequency band. Since the second radiator 121 and the third radiator 131 may be used when the second antenna 120 is operated, the third antenna 130 may be operated by using not only the third radiator 131 but also the second radiator 121, thereby realizing multiplexing of radiators, realizing multiplexing of spaces, and being beneficial to reducing the size of the antenna assembly 10. When the antenna assembly 10 is applied to the electronic device 1, a stacking space for stacking the antenna assembly 10 in the electronic device 1 can be saved.

In the present embodiment, the fourth frequency Band is a Middle High Band (MHB) and an Ultra High Band (UHB) frequency Band, that is, a mhb+uhb frequency Band.

In combination with the foregoing description, the length of the third radiator 131 is smaller than that of the second radiator 121, and the fourth frequency band of the electromagnetic wave signal transmitted and received by the third antenna 130 is higher than that of the electromagnetic wave signal transmitted and received by the third antenna 120.

With continued reference to fig. 10, the third antenna 130 further includes a fifth matching circuit M5 and a third adjusting circuit T3. The fourth signal source 132 is electrically connected to the fifth matching circuit M5 to the fourth feeding point P4, and the fifth matching circuit M5 and the third adjusting circuit T3 are configured to adjust a resonant frequency of the electromagnetic wave signal of the fourth frequency band according to a preset frequency selection parameter, so as to implement CA and ENDC combination.

The third antenna 130 further has a second ground GND2 facing away from the second slot 1212, the second ground GND2 being grounded.

In this embodiment, the resonant frequency of the electromagnetic wave signal in the fourth frequency band can be adjusted by setting the frequency selection parameters (including the capacitance value, the inductance value, and the resistance value) of the fifth matching circuit M5 and the frequency selection parameters (including the capacitance value, the inductance value, and the resistance value) of the third adjusting circuit T3, so as to implement the combination of CA and ENDC in the fourth frequency band.

In this embodiment, one end of the third adjusting circuit T3 is grounded, and the other end is electrically connected to the fifth matching circuit M5. In an embodiment, the third adjusting circuit T3 may be connected in parallel with the first matching circuit M1 or connected in series. The third adjusting circuit T3 may be integrated with the fifth matching circuit M5 into a module, or may be a separate module from the first matching circuit M1. In an embodiment, the third adjusting circuit T3 is a switch or a variable capacitor.

Referring to fig. 12, fig. 12 is a schematic diagram of an antenna assembly according to another embodiment of the present application. The antenna assembly 10 provided in this embodiment is substantially the same as the antenna assembly 10 provided in fig. 10 and the related description thereof, except that in this embodiment, in fig. 10 and the related description thereof, one end of the third adjusting circuit T3 is grounded, and the other end is electrically connected to the fifth matching circuit M5; in the present embodiment, one end of the third adjusting circuit T3 is grounded, and the other end is electrically connected to the third radiator 131.

Referring to fig. 13, fig. 13 is a schematic diagram illustrating a return loss curve of the antenna assembly shown in fig. 10 for receiving and transmitting electromagnetic wave signals in the fourth frequency band. The eighth wavelength mode from the second ground GND2 to the second slot 1212 is used for supporting the transmission and reception of electromagnetic wave signals in the fifth sub-band, and is labeled as mode 9 in the figure for convenience of illustration. The quarter wavelength mode of the second connection O2 to the second slot 1212 is used to support the transmission and reception of electromagnetic wave signals in the sixth sub-band, and is denoted as mode 10 in the figure for convenience of illustration. The quarter wavelength mode from the second ground GND2 to the second slot 1212 is used for supporting the transmission and reception of electromagnetic wave signals in the seventh sub-band, and is denoted as mode 11 for convenience of description. The quarter wavelength mode from the fourth feeding point P4 to the second slot 1212 is used for supporting the transmission and reception of electromagnetic wave signals in the eighth sub-band, and is denoted as a mode 12 in the figure for convenience of description. Wherein the fourth frequency band includes the fifth frequency sub-band, the sixth frequency sub-band, the seventh frequency sub-band, and the eighth frequency sub-band.

It should be noted that, the mode 9, the mode 10, the mode 11, and the mode 12 illustrated in fig. 13 are only one mode case of each sub-band included in the fourth frequency band, and the resonance frequency point of each sub-band can be adjusted by setting the frequency selection parameters of the fifth matching circuit M5 and the third adjusting circuit T3. In addition, the antenna assembly 10 can cover the WiFi-5G frequency band or higher frequency band by adjusting the frequency selection parameters of the fifth matching circuit M5 and the third adjusting circuit T3 to adjust the

modes

11 and 12.

The fourth frequency band is the mhb+uhb frequency band, and therefore the antenna shown in fig. 11 is the second branch mhb+uhb antenna. As can be seen from fig. 13, the second branch mhb+uhb antenna can cover all mhb+uhb bands of long term evolution (Long Term Evolution, LTE) and all mhb+uhb bands of New Radio, NR. The MHB+UHB frequency band of the LTE comprises an LTE-1/2/3/4/7/32/40/41 frequency band, and the MHB+UHB frequency band of the NR comprises an NR-1/3/7/40/41/77/78/79 frequency band.

Referring to fig. 14, fig. 14 is a schematic diagram of an antenna assembly according to another embodiment of the present application. In this embodiment, the antenna assembly 10 includes a first antenna 110, a second antenna 120, and a third antenna 130. The first antenna 110 includes a first radiator 111, a first signal source 112, a first matching circuit M1, and a first adjusting circuit T1. The first radiator 111 has a first feeding point P1 and a first ground GND1, and the first signal source 112 is electrically connected to the first matching circuit M1 and the first radiator 111, and the first ground GND1 is grounded. The first adjusting circuit T1 is electrically connected to the first radiator 111. In the present embodiment, the connection point at which the first radiator 111 is electrically connected to the first adjusting circuit T1 is located between the first ground GND1 and the first feeding point P1. In other embodiments, the connection point at which the first radiator 111 is electrically connected to the first adjusting circuit T1 is located at an end of the first feeding point P1 facing away from the first ground GND 1. When the connection point of the first radiator 111 electrically connected to the first adjusting circuit T1 is located at one end of the first feeding point P1 away from the first ground GND1, the influence of the electromagnetic wave signal generated by the first radiator 111 on the electromagnetic wave signals of other frequency bands supported by the antenna assembly 10 can be reduced. It should be understood that, as shown in the schematic diagram of the present embodiment, the connection point where the first radiator 111 is electrically connected to the first adjusting circuit T1 may be located between the first ground GND1 and the first feeding point P1, as long as the first adjusting circuit T1 is electrically connected to the first radiator 111.

The second antenna 120 includes a second radiator 121, a second signal source 122, a third signal source 123, a second matching circuit M2, a third matching circuit M3, a fourth matching circuit M4, and a second adjusting circuit T2. The second radiator 121 has a first slit 1211 between the first radiator 111 and is capacitively coupled to the first radiator 111 through the first slit 1211. The second radiator 121 includes a second feeding point P2, a third feeding point P3, a first connection O1, and a second connection O2. The second feeding point P2 is disposed adjacent to the first radiator 111 compared to the third feeding point P3, the first connection O1 is located between the second feeding point P2 and the third feeding point P3, and the second connection O2 is located at an end of the third feeding point P3 away from the second feeding point P2. The second signal source 122 electrically connects the second matching circuit M2 to the first feeding point P1. The third matching circuit M3 is electrically connected to the first connection O1. The third signal source 123 electrically connects the fourth matching circuit M4 to the third feeding point P3. The second regulating circuit T2 is electrically connected to the second connection O2.

The third antenna 130 includes a third radiator 131, a fourth signal source 132, a fifth matching circuit M5, and a third adjusting circuit T3. The third radiator 131 has a second slit 1212 between the second radiator 121, and is capacitively coupled to the second radiator 121 through the second slit 1212. The third radiator 131 has a fourth feeding point P4 and a second ground GND2. The fourth signal source 132 is electrically connected to the fifth matching circuit M5 to the third feeding point P3, and the second ground GND2 is grounded. The third adjusting circuit T3 is electrically connected to the third radiator 131. In the present embodiment, the connection point at which the third radiator 131 is electrically connected to the third adjusting circuit T3 is located between the fourth feeding point P4 and the second ground GND2. It will be appreciated that, in other embodiments, the connection point at which the third radiator 131 is electrically connected to the third adjusting circuit T3 is located at an end of the fourth feeding point P4 facing away from the second ground GND2. When the connection point of the third radiator 131 electrically connected to the third adjusting circuit T3 is located at one end of the fourth feeding point P4 away from the second ground GND2, the influence of the electromagnetic wave signals of the fourth frequency band generated by the third radiator 131 on the electromagnetic wave signals of other frequency bands may be reduced. It should be understood that, as shown in the schematic diagram of the present embodiment, the connection point where the third radiator 131 is electrically connected to the third adjusting circuit T3 may be located between the fourth feeding point P4 and the second ground GND2, as long as the third adjusting circuit T3 is electrically connected to the fourth radiator.

Referring to fig. 15, fig. 15 is a schematic diagram of an antenna assembly according to another embodiment of the present application. In this embodiment, the second antenna 120 further includes a fourth adjusting circuit T4, where the fourth adjusting circuit T4 is electrically connected to the fourth matching circuit M4, and is configured to adjust a resonance frequency point of the third frequency band.

In the schematic diagram of the present embodiment, the second antenna 120 further includes a fourth adjusting circuit T4, which is coupled to the antenna assembly 10 provided in the foregoing embodiment.

Referring to fig. 16, fig. 16 is a schematic diagram of an antenna assembly according to another embodiment of the present application. The first frequency band is the same as the fourth frequency band, and the antenna assembly 10 further includes a controller 140, where the controller 140 is configured to control any one of the first antenna 110 and the third antenna 130 to operate according to a placement state of the electronic device 1 to which the antenna assembly 10 is applied.

The placement state of the electronic device 1 includes a landscape state of the electronic device 1 and a portrait state of the electronic device 1.

The control strategy of the controller 140 for controlling the first antenna 110 and the third antenna 130 in the antenna assembly 10 will be described in detail later with reference to the specific structure of the electronic device 1.

In the schematic diagram of the present embodiment, the antenna assembly 10 further includes the controller 140 incorporated into the antenna assembly 10 shown in one of the modes, and it should be understood that the antenna assembly 10 provided in the present application should not be construed as being limited.

In an embodiment, the first frequency band and the fourth frequency band are both mhb+uhb frequency bands, the second frequency band is a GPS-L5 frequency band, and the third frequency band is an LB frequency band.

Referring to fig. 17 and fig. 18 together, fig. 17 is a perspective view of an electronic device according to an embodiment of the present disclosure; fig. 18 is a cross-sectional view taken along line I-I of fig. 17, in accordance with an embodiment. The electronic device 1 comprises an antenna assembly 10 according to any of the previous embodiments. The antenna assembly 10 is described above, and will not be described in detail herein.

Referring to fig. 17 to 19 together, fig. 19 is a top view of a metal frame according to an embodiment of the present disclosure. The electronic device 1 further comprises a metal housing 20. The metal frame 20 includes a frame body 210, a first metal segment 220, a second metal segment 230, and a third metal segment 240. The first metal section 220, the second metal section 230 and the third metal section 240 are arranged at intervals, gaps are formed between the first metal section 220, the second metal section 230 and the third metal section 240 and the frame body 210 respectively, one end of the first metal section 220, which is away from the second metal section 230, is connected with the frame body 210, one end of the third metal section 240, which is away from the second metal section 220, is connected with the frame body 210, wherein the first radiator 111 comprises the first metal section 220, the second radiator 121 comprises the second metal section 230, and the third metal section 240 comprises the third radiator 131.

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 segment 220 facing away from the second metal segment 230 is connected to the frame body 210, so that the first metal segment 220 is grounded; one end of the third metal segment 240 facing away from the second metal segment 230 is connected to the frame body 210, so that the third metal segment 240 is grounded.

Referring to fig. 18 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 segment 220, the second metal segment 230 and the third metal segment 240 are formed on the frame 240.

In the present embodiment, the metal housing 20 is a middle frame 30 of the electronic device 1.

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 third signal source 123, the fourth signal source 132, the first matching circuit M1, the second matching circuit M2, the third matching circuit M3, the fourth matching circuit M4, the fifth matching circuit M5, the first adjusting circuit T1, the second adjusting circuit T2, the third adjusting circuit T3, and the fourth adjusting circuit T4 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 casing 20 is not a middle frame, but is a metal casing provided in 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 or an LDS antenna radiator or a PDS antenna radiator or a metal branch; the third radiator 131 is an FPC antenna radiator, an LDS antenna radiator, a PDS antenna radiator, or a metal branch. It will be appreciated that the first radiator 111 and the third radiator 131 are electrically connected to a 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 third radiator 131 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 third radiator 131.

In an embodiment, the first radiator 111, the second radiator 121 and the third radiator 131 are antenna radiators of the same type and are disposed on the same substrate. The first radiator 111, the second radiator 121, and the third radiator 131 are the same type and are disposed on the same substrate, so that the preparation of the first radiator 111, the second radiator 121, and the third radiator 131 and the assembly of the first radiator 111, the second radiator 121, and the third radiator 131 with other components in the electronic device 1 are facilitated.

When the first radiator 111 is electrically connected to the ground of the middle frame 30, the first radiator 111 may be connected to the ground of the middle frame 30 through a connection rib, or the first radiator 111 may be electrically connected to the ground of the middle frame 30 through a conductive spring. Similarly, when the third radiator 131 is electrically connected to the ground of the middle frame 30, the third radiator 131 may be connected to the ground of the middle frame 30 through a connection rib, or the third radiator 131 may be electrically connected to the ground of the middle frame 30 through a conductive spring.

Referring to fig. 20, fig. 20 is a schematic diagram of an electronic device in a portrait state. In this embodiment, the electronic device 1 has a first side 11, a second side 12, a third side 13, and a fourth side 14 connected end to end in order. The first side 11 is disposed opposite to the third side 13, the second side 12 is disposed opposite to the fourth side 14, the length of the first side 11 is smaller than that of the second side 12, the first radiator 111 and a part of the second radiator 121 are disposed corresponding to the first side 11, and the other part of the second radiator 121 and the third radiator 131 are disposed corresponding to the second side 12.

The length of the first side 11 is smaller than the length of the second side 12, in other words, the first side 11 is a short side and the second side 12 is a long side. 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. When the electronic device 1 is in the portrait state (i.e., the state in fig. 17), the controller 140 controls the first antenna 110 to support the electromagnetic wave signal of the first frequency band. In other words, the main mhb+uhb set is implemented by the first antenna 110 when the electronic device 1 is in the portrait state. When the electronic device 1 is in the portrait state, the third antenna 130 is relatively easy to be blocked by the user when the user holds the electronic device 1, so that the performance of transmitting and receiving electromagnetic wave signals by the third antenna 130 is weak. Therefore, when the electronic device 1 is in the portrait state, the controller 140 controls the mhb+uhb main set to be implemented by the first antenna 110, so that poor communication performance of the electronic device 1 caused by implementation of the mhb+uhb main set by the third antenna 130 can be avoided. The main mhb+uhb set is implemented by the first antenna 110, and means that the first antenna 110 transmits and receives electromagnetic wave signals in the mhb+uhb band.

When the electronic device 1 is in the landscape state, please refer to fig. 21, fig. 21 is a schematic diagram of the electronic device in the landscape state. The controller 140 controls the third antenna 130 to support electromagnetic wave signals of a fourth frequency band. In other words, the mhb+uhb main set is implemented by the third antenna 130 when the electronic device 1 is in the landscape state. When the electronic device 1 is in the landscape state, the first antenna 110 is easily shielded by the user when the user holds the electronic device 1, so that the performance of the first antenna 110 for transmitting and receiving electromagnetic wave signals is weak. Therefore, when the electronic device 1 is in the landscape state, the controller 140 controls the mhb+uhb main set to be implemented by the third antenna 130, so that poor communication performance of the electronic device 1 caused by implementation of the mhb+uhb main set by the first antenna 110 can be avoided.

In summary, the controller 140 controls the antenna supporting the mhb+uhb band according to the horizontal screen state and the vertical screen state of the electronic device 1, so that the electronic device 1 has better communication performance in the mhb+uhb band.

Furthermore, in an embodiment, the controller 140 controls the mhb+uhb main set to be implemented by the third antenna 130 when the electronic device 1 is in a talk state. In general, when the electronic device 1 is in a call state, the first antenna 110 is often closer to the user's head than the third antenna 130, so that the controller 140 controls the mhb+uhb main set to be implemented by the third antenna 130, so that the electromagnetic wave absorption ratio (also called specific absorption rate) (Specific Absorption Rate, SAR) of the antenna assembly 10 to the user can be reduced, and thus, the security of the electronic device 1 can be improved.

In another embodiment, when the user's head is close to the first antenna 110, the controller 140 controls the mhb+uhb main set to be implemented by the third antenna 130, so as to reduce SAR of the antenna assembly 10 for the user, thereby improving security of the electronic device 1. In another embodiment, when the user's head is close to the third antenna 130, the controller 140 controls the mhb+uhb main set to be implemented by the first antenna 110, so as to reduce SAR of the antenna assembly 10 for the user, thereby improving security of the electronic device 1.

Referring to fig. 22, fig. 22 is a schematic diagram of an electronic device according to another embodiment of the present application. The electronic device 1 has a first side 11, a second side 12, a third side 13 and a fourth side 14, which are connected end to end in sequence. The first side 11 is disposed opposite to the third side 13, the second side 12 is disposed opposite to the fourth side 14, the length of the first side 11 is smaller than that of the second side 12, the first radiator 111 and a part of the second radiator 121 are disposed corresponding to the first side 11, and the other part of the second radiator 121 and the third radiator 131 are disposed corresponding to the second side 12.

The length of the first side 11 is smaller than the length of the second side 12, in other words, the first side 11 is a short side and the second side 12 is a long side. 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. The first radiator 111, the second radiator 121, and the third radiator 131 are all disposed corresponding to the second side 12. It will be appreciated that in other embodiments, the first radiator 111, the second radiator 121, and the third radiator 131 are all disposed corresponding to the first side 11. That is, the first radiator 111, the second radiator 121, and the third radiator 131 are all disposed on the same side.

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, a first matching circuit and a first adjusting circuit, wherein the first radiator is provided with a first feed point, the first signal source is electrically connected with the first matching circuit to the first feed point, and the first matching circuit and the first adjusting circuit are used for adjusting the resonant frequency of electromagnetic wave signals of a first frequency band according to preset frequency selection parameters so as to realize CA and ENDC combination of the first frequency band;

the second antenna comprises a second radiator, a second signal source, a third signal source, a second matching circuit and a third matching circuit, wherein a first gap is formed between the second radiator and the first radiator, the second radiator and the first radiator are capacitively coupled through the first gap, so that the first signal source receives and transmits electromagnetic wave signals of a first frequency band through the first radiator and part of the second radiator, the second radiator is provided with a second feeding point, a third feeding point and a first connecting point which are arranged at intervals, the second feeding point is arranged adjacent to the first radiator compared with the third feeding point, the first connecting point is positioned between the first feeding point and the second feeding point, and the second signal source is electrically connected with the second matching circuit to the second feeding point, so that the second antenna receives and transmits electromagnetic wave signals of a second frequency band; the third signal source is electrically connected with the third feed point, so that the second antenna receives and transmits electromagnetic wave signals of a third frequency band; one end of the third matching circuit is grounded, and the other end of the third matching circuit is electrically connected with the first connecting point; the first radiator also has a first ground terminal facing away from the first slot, the first ground terminal being grounded;

The eighth wavelength mode from the first grounding end to the first gap is used for supporting the receiving and transmitting of electromagnetic wave signals of a first sub-frequency band;

the eighth wavelength mode from the first connection point to the first gap is used for supporting the receiving and transmitting of electromagnetic wave signals of a second sub-frequency band;

the quarter-wavelength mode from the first grounding end to the first gap is used for supporting the receiving and transmitting of electromagnetic wave signals of a third sub-frequency band;

the quarter-wavelength mode from the first feeding point to the first slot is used for supporting the receiving and transmitting of electromagnetic wave signals of a fourth sub-frequency band, wherein the first frequency band comprises the first sub-frequency band, the second sub-frequency band, the third sub-frequency band and the fourth sub-frequency band.

2. The antenna assembly of claim 1, wherein one end of the first adjusting circuit is grounded and the other end is electrically connected to the first matching circuit; alternatively, one end of the first adjusting circuit is grounded, and the other end of the first adjusting circuit is electrically connected to the first radiator.

3. The antenna assembly of claim 1, wherein an eighth wavelength mode of the first connection point to the first slot is used to support the transceiving of electromagnetic wave signals in the second frequency band.

4. The antenna assembly of claim 3 wherein the second matching circuit includes a first capacitor, the second signal source being electrically connected to the second feed point via the first capacitor.

5. The antenna assembly of claim 4, wherein the second matching circuit further comprises a bandpass filtering unit for bandpass filtering the electromagnetic wave signal in the second frequency band, one end of the bandpass filtering unit is electrically connected to one end of the first capacitor away from the second feeding point, the other end of the bandpass filtering unit is electrically connected to the second feeding point, and the bandpass filtering unit comprises a second capacitor and an inductor connected in series.

6. The antenna assembly of claim 5, wherein the second matching circuit further comprises a third capacitor, one end of the third capacitor is grounded, the other end of the third capacitor is electrically connected to one end of the first capacitor away from the second signal source, and the third capacitor is used for adjusting a resonance frequency point of the second frequency band electromagnetic wave signal.

7. The antenna assembly of claim 1, wherein the second radiator further has a second connection point, the second antenna further has a fourth matching circuit and a second adjusting circuit, the third signal source is electrically connected to the third feeding point via the fourth matching circuit, the fourth matching circuit is for impedance matching the second antenna; the second adjusting circuit is electrically connected to the second connection point, the second adjusting circuit is used for adjusting the resonance frequency point of the third frequency band, and the second antenna receives and transmits electromagnetic wave signals of the third frequency band from the first connection point to one end, deviating from the first gap, of the second radiator.

8. The antenna assembly of any one of claims 1-7, wherein the antenna assembly further comprises:

the third antenna comprises a third radiator and a fourth signal source, the third radiator is provided with a fourth feed point, a second gap is arranged between the third radiator and the second radiator, and the third radiator and the second radiator are capacitively coupled through the second gap, so that the fourth signal source receives and transmits electromagnetic wave signals of a fourth frequency band through the third radiator and part of the second radiator.

9. The antenna assembly of claim 8, wherein the third antenna further comprises a fifth matching circuit and a third adjusting circuit, the fourth signal source electrically connects the fifth matching circuit to the fourth feeding point, and the fifth matching circuit and the third adjusting circuit are configured to adjust a resonant frequency of the electromagnetic wave signal of the fourth frequency band according to a preset frequency selection parameter so as to implement CA and ENDC combination.

10. The antenna assembly of claim 9, wherein one end of the third adjusting circuit is grounded, and the other end is electrically connected to the fifth matching circuit; alternatively, one point of the third adjusting circuit is grounded, and the other end of the third adjusting circuit is electrically connected to the third radiator.

11. The antenna assembly of claim 9 wherein when the second radiator has a second connection point to a second adjusting circuit, the third antenna further has a second ground terminal facing away from the second slot, the second ground terminal being grounded,

the eighth wavelength mode from the second grounding end to the second gap is used for supporting the receiving and transmitting of electromagnetic wave signals of a fifth sub-frequency band;

the quarter wavelength mode from the second connection point to the second gap is used for supporting the receiving and transmitting of electromagnetic wave signals of a sixth sub-frequency band;

the quarter-wavelength mode from the second grounding end to the second gap is used for supporting the receiving and transmitting of electromagnetic wave signals of a seventh sub-frequency band;

and the fourth feeding point is used for supporting the receiving and transmitting of electromagnetic wave signals of an eighth sub-frequency band in a quarter-wavelength mode from the fourth feeding point to the second gap, wherein the fourth frequency band comprises the fifth sub-frequency band, the sixth sub-frequency band, the seventh sub-frequency band and the eighth sub-frequency band.

12. The antenna assembly of claim 7, wherein the second antenna further comprises a fourth adjusting circuit electrically connected to the fourth matching circuit for adjusting a resonance frequency point of the third frequency band.

13. The antenna assembly of claim 8, wherein the first frequency band is the same as the fourth frequency band, the antenna assembly further comprising a controller for controlling operation of any one of the first antenna and the third antenna according to a placement state of an electronic device to which the antenna assembly is applied.

14. The antenna assembly of claim 8 wherein the first frequency band and the fourth frequency band are both mhb+uhb frequency bands, the second frequency band is a GPS-L5 frequency band, and the third frequency band is an LB frequency band.

15. The antenna assembly of claim 1, wherein the first radiator is a PC antenna radiator, or an LDS antenna radiator, or a PDS antenna radiator, or a metal stub; the second radiator is an FPC antenna radiator, an LDS antenna radiator, a PDS antenna radiator or a metal branch.

16. An electronic device comprising an antenna assembly as claimed in any one of claims 1-15.

17. The electronic device of claim 16, wherein the electronic device has a first side, a second side, a third side, and a fourth side connected end to end in sequence, the first side being disposed opposite the third side, the second side being disposed opposite the fourth side, a length of the first side being less than a length of the second side, the first radiator and a portion of the second radiator being disposed corresponding to the first side and another portion of the second radiator and the third radiator being disposed corresponding to the second side when the antenna assembly further includes a third antenna and the third antenna includes a third radiator.

18. The electronic device of claim 17, wherein when the antenna assembly further comprises a third antenna and the third antenna comprises a third radiator, the first radiator, the second radiator, and the third radiator are each disposed corresponding to the first side or each disposed corresponding to the second side.