CN114944548A

CN114944548A - Antenna assembly and electronic equipment

Info

Publication number: CN114944548A
Application number: CN202210592601.0A
Authority: CN
Inventors: 吴小浦
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2022-05-27
Filing date: 2022-05-27
Publication date: 2022-08-26
Also published as: WO2023226392A1

Abstract

The application discloses antenna module and electronic equipment, the antenna module that this application embodiment provided has realized many antennas and has united, has improved communication quality, is favorable to electronic equipment's whole miniaturization. Further, the detection of the SAR is conveniently realized to achieve reasonable control of the antenna power.

Description

Antenna assembly and electronic equipment

Technical Field

The present application relates to, but not limited to, communication technologies, and more particularly, to an antenna assembly and an electronic device.

Background

With the development of technology, electronic devices such as mobile phones and the like with communication functions have higher popularity and higher functions. Antenna systems are often included in electronic devices to implement communication functions of the electronic devices. How to promote miniaturization of electronic equipment while improving communication quality of the electronic equipment becomes a technical problem to be solved.

Disclosure of Invention

The application provides an antenna module and electronic equipment, can improve communication quality, is favorable to the complete machine miniaturization.

An embodiment of the present application provides an antenna assembly, includes: the antenna comprises a first antenna unit, a second antenna unit and a third antenna unit; wherein,

the first antenna unit comprises a first radiator and a first feed source, the first feed source is electrically connected with the first radiator and is used for exciting the first radiator to resonate in a first frequency band, and the first frequency band comprises a medium-high frequency MHB frequency band and an ultrahigh frequency UHB frequency band;

the second antenna unit comprises a second radiator and a third feed source, a first gap is formed between one end of the second radiator and the first radiator, the third feed source is electrically connected with the second radiator and used for exciting the second radiator to resonate in a third frequency band, and the third frequency band comprises an MHB frequency band; the second radiator is multiplexed as a proximity sensor electrode and used for sensing and representing the proximity degree of the body to be detected to the antenna assembly;

the third antenna unit comprises a third radiator and a fifth feed source, a second gap is formed between the third radiator and the second radiator, the fifth feed source is electrically connected with the third radiator and used for exciting the third radiator to resonate in a fifth frequency band, and the fifth frequency band comprises a low-frequency LB frequency band.

According to the antenna assembly provided by the embodiment of the application, the electromagnetic wave signals transmitted and/or received under the coupling effect at least cover an LTE-MHB frequency band, an NR-MHB frequency band, an LTE-LB frequency band, an NR-LB frequency band and an NR-UHB frequency band, so that a plurality of antennas are integrated, the communication quality is improved, and the integral miniaturization of electronic equipment is facilitated. On the other hand, the detection of the SAR can be conveniently realized to achieve reasonable control of the antenna power.

According to the other antenna assembly provided by the embodiment of the application, the electromagnetic wave signals transmitted and/or received under the coupling action at least cover an LTE-MHB frequency band, an NR-MHB frequency band, an LTE-LB frequency band, an NR-UHB frequency band and a GPS-L5 frequency band, at least 5 antenna common apertures are realized, the communication quality is improved, and the integral miniaturization of electronic equipment is facilitated. Furthermore, the detection of the SAR is conveniently realized to achieve reasonable control of the antenna power.

An electronic device, characterized by comprising an antenna assembly according to any one of the embodiments of the present application.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

Drawings

The accompanying drawings are included to provide a further understanding of the claimed subject matter and are incorporated in and constitute a part of this specification, illustrate embodiments of the subject matter and together with the description serve to explain the principles of the subject matter and not to limit the subject matter.

FIG. 1 is a schematic constituent diagram of a first embodiment of an antenna assembly of the present application;

FIG. 2 is a schematic diagram of a second embodiment of an antenna assembly of the present application;

FIG. 3 is a schematic diagram of a third embodiment of an antenna assembly of the present application;

FIG. 4 is a schematic diagram illustrating a fourth exemplary embodiment of an antenna assembly of the present application;

FIG. 5 is a schematic diagram illustrating a fifth exemplary embodiment of an antenna assembly of the present application;

FIG. 6 is a schematic constituent diagram of a sixth embodiment of an antenna assembly of the present application;

FIG. 7 is a schematic constituent diagram of a seventh embodiment of an antenna assembly of the present application;

fig. 8(a) is a schematic diagram of mode 1 in which the first antenna element in the seventh embodiment of the present application is excited;

fig. 8(b) is a schematic diagram of mode 2 of the first antenna element being excited in the seventh embodiment of the present application;

fig. 8(c) is a schematic diagram of mode 3 in which the first antenna element in the seventh embodiment of the present application is excited;

fig. 8(d) is a schematic diagram of mode 4 of the first antenna element being excited in the seventh embodiment of the present application;

fig. 9 is a schematic diagram of a return loss curve of an electromagnetic wave signal in a first frequency band transmitted and/or received by a first antenna unit according to a seventh embodiment of the present application;

fig. 10 is a schematic diagram of mode 5 with a second antenna element excited according to a seventh embodiment of the present application;

fig. 11 is a schematic diagram of a return loss curve of an electromagnetic wave signal of a second frequency band transmitted and/or received by a second antenna unit according to a seventh embodiment of the present application;

fig. 12(a) is a schematic diagram of mode 6 excited by the third antenna element in the seventh embodiment of the present application;

fig. 12(b) is a schematic diagram of mode 7 in which the third antenna element excites in the seventh embodiment of the present application;

fig. 13 is a schematic diagram of a return loss curve of an electromagnetic wave signal in a third frequency band transmitted and/or received by a third antenna unit according to a seventh embodiment of the present application;

fig. 14 is a schematic structural diagram of an eighth embodiment of an antenna assembly of the present application;

fig. 15(a) is a schematic diagram of mode 8 in which a fourth antenna excites in the eighth embodiment of the present application;

fig. 15(b) is a schematic diagram of mode 9 in which the fourth antenna excites in the eighth embodiment of the present application;

fig. 16 is a schematic diagram of a return loss curve of an electromagnetic wave signal of a fourth frequency band transmitted and/or received by a fourth antenna according to an eighth embodiment of the present application;

fig. 17 is a schematic diagram of a pattern 8' of the fourth antenna excitation in the seventh embodiment of the present application;

fig. 18 is a schematic diagram of a mode 10 of fifth antenna excitation according to a seventh embodiment of the present application;

fig. 19 is a schematic diagram of a return loss curve of an electromagnetic wave signal in a fifth frequency band transmitted and/or received by a fifth antenna according to a seventh embodiment of the present application;

fig. 20 is a schematic structural diagram of a ninth embodiment of an antenna assembly of the present application;

fig. 21 is a schematic structural diagram of a tenth embodiment of an antenna assembly of the present application;

fig. 22 is a schematic diagram illustrating distribution of electric field lines when the target object is not close to the antenna assembly in the embodiment of the present application;

FIG. 23 is a schematic diagram of the distribution of electric field lines when a target object is in proximity to an antenna assembly in an embodiment of the present application;

fig. 24 is a schematic structural diagram of an eleventh embodiment of an antenna assembly in an embodiment of the present application;

fig. 25 is a schematic layout diagram of an antenna assembly in an electronic device according to an embodiment of the present application.

Detailed Description

To make the objects, technical solutions and advantages of the present application more apparent, embodiments of the present application will be described in detail below with reference to the accompanying drawings. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.

To facilitate an understanding of the present application, the present application will now be described more fully with reference to the accompanying drawings. Embodiments of the present application are set forth in the accompanying drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

It is to be understood that the terms "first", "second", and the like, as used herein, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to a number of technical features being indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

It is to be understood that "connection" in the following embodiments is to be understood as "electrical connection", "communication connection", and the like if the connected circuits, modules, units, and the like have communication of electrical signals or data with each other.

As used herein, the singular forms "a", "an" and "the" may include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises/comprising," "includes" or "including," etc., specify the presence of stated features, integers, steps, operations, components, parts, or combinations thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof. Also, as used in this specification, the term "and/or" includes any and all combinations of the associated listed items.

The present application provides an antenna assembly 10. The antenna assembly 10 may be applied to an electronic device 1, where the electronic device 1 includes, but is not limited to, an electronic device having a communication function, such as a mobile phone, a Mobile Internet Device (MID), an electronic book, a Portable Player Station (PSP), or a Personal Digital Assistant (PDA).

Fig. 1 is a schematic structural diagram of a first embodiment of an antenna assembly in the embodiment of the present application, and as shown in fig. 1, an antenna assembly 10 in the first embodiment may include: a first antenna element 110, a second antenna element 120, and a third antenna element 130; wherein,

the first antenna unit 110 includes a first radiator 111 and a first feed 11, where the first feed 11 is electrically connected to the first radiator 111 and is configured to excite the first radiator 111 to resonate in a first frequency band, and in an embodiment, the first frequency band includes a medium-high frequency (MHB) frequency band and an ultra-high frequency (UHB) frequency band;

the second antenna unit 120 includes a second radiator 121, a first gap 1112 is formed between one end of the second radiator 121 and the first radiator 111, and a second gap 1213 is formed between the other end of the second radiator 121 and the third radiator 131;

the third antenna unit 130 includes a third radiator 131 and a fifth feed 15, where the fifth feed 15 is electrically connected to the third radiator 131 and is used to excite the third radiator 131 to resonate in a fifth frequency band, which in one embodiment includes a low frequency (LB) band.

In the antenna assembly shown in fig. 1, the second antenna unit 120 is a floating radiator, and the coupling between the first radiator 111 and the third radiator 131 is achieved through the second antenna unit 120, that is, the first radiator 111 and the third radiator 131 have a common caliber. As shown in fig. 1, when the antenna assembly 10 is in operation, the first excitation signal generated by the first feed 11 may be coupled to the third radiator 131 via the first radiator 11 and the second antenna unit 120. In other words, the first antenna unit 110 may transmit the electromagnetic wave signal by using not only the first radiator 111 but also the third radiator 131 in the third antenna unit 130, so that the first antenna unit 110 may operate in a wider frequency band. Likewise, the third antenna unit 130 may operate to transmit an electromagnetic wave signal using not only the third radiator 131 but also the first radiator 111 of the first antenna unit 110, so that the third antenna unit 130 may operate in a wider frequency band. Meanwhile, the second antenna unit 120 serves as a suspension radiator, and generates n/2 wavelength mode resonance through coupling, thereby increasing the bandwidth of the MHB band. Therefore, on one hand, because the radiators between the first antenna unit 110 and the third antenna unit 130 realize the mutual multiplexing, thereby realizing the multi-antenna integration, and on the other hand, the bandwidth of the first antenna unit 110 is increased through the second antenna unit 120, the antenna assembly 10 provided by the embodiment of the present application also reduces the overall volume of the antenna assembly 10 while increasing the bandwidth, which is beneficial to the overall miniaturization of the electronic device.

In an exemplary example, fig. 2 is a schematic structural diagram of a second embodiment of an antenna assembly in the embodiment of the present application, and as shown in fig. 2, based on the embodiment shown in fig. 1, the third antenna unit 130 further includes a fourth feed 14, where the fourth feed 14 is electrically connected to the third radiator 131, and is used to excite the third radiator 131 to resonate in a fourth frequency band, where in an embodiment, the fourth frequency band includes a UHB frequency band.

In an exemplary example, the first Band is a medium High frequency (MHB) and Ultra High frequency (UHB) Band, the fourth Band is an MHB Band, and the fifth Band is a low frequency (LB) Band. It should be noted that the frequency range of MHB is 1000MHz to 3000MHz, the frequency range of UHB is 3000MHz to 6000MHz, and the frequency range of LB is less than 1000 MHz. The LB band may include all low-band electromagnetic wave signals such as 4G (also referred to as LTE-LB) and 5G (also referred to as NR-LB). The MHB band may include electromagnetic wave signals of all medium and high frequency bands such as LTE-MHB and NR-MHB.

The electromagnetic wave signals transmitted and/or received by the antenna assembly shown in fig. 1 or fig. 2 under the coupling action at least cover an LTE-MHB frequency band, an NR-MHB frequency band, an LTE-LB frequency band, an NR-LB frequency band and an NR-UHB frequency band, so that a multi-antenna is integrated, the communication quality is improved, and the whole miniaturization of electronic equipment is facilitated. On the other hand, the suspended metal sheet 120 can be used for conveniently realizing the detection of the SAR so as to achieve reasonable control of the antenna power.

In an exemplary embodiment, fig. 3 is a schematic structural diagram of a third embodiment of an antenna assembly in an embodiment of the present application, as shown in fig. 3, based on the embodiment shown in fig. 1 or fig. 2, the second antenna unit may further include a first frequency modulation circuit T1, as shown in fig. 3, the second radiator 121 is provided with a second ground terminal C, one end of the first frequency modulation circuit T1 is electrically connected to the second ground terminal C, and the other end of the first frequency modulation circuit T1 is connected to a second ground reference GND 2. In the embodiment of the present application, a large capacitor may be connected to ground at the second ground terminal C, which is not described in detail herein. By means of the antenna assembly shown in fig. 3, a quarter-wavelength mode of the first slot 1112 to the second ground reference GND2 is generated for increasing the bandwidth of the MHB and/or UHB frequency band transmitted and/or received by the first antenna unit 110, while a 1/4 wavelength mode of the second slot 1213 to the second ground reference GND2 is generated for increasing the LB frequency band transmitted and/or received by the third antenna unit 130. Meanwhile, the second antenna unit 120 is used as a suspension radiator, and n/2 wavelength mode resonance generated by coupling still exists, so that the bandwidth of the MHB frequency band is increased.

In an exemplary embodiment, fig. 4 is a schematic structural diagram of a fourth embodiment of an antenna assembly in the embodiment of the present application, and as shown in fig. 4, based on the embodiment shown in fig. 3, the second antenna unit 120 further includes a third feed 13, where the third feed 13 is electrically connected to the second radiator 121, and is used to excite the second radiator 121 to resonate in a third frequency band, where the third frequency band in one embodiment includes an MHB frequency band or an MHB + UHB frequency band. As shown in fig. 4, the second radiator 121 has a third feeding point E, and the third feed 13 is electrically connected to the third feeding point E to excite the second radiator 121 to resonate in the third frequency band. In one embodiment, the third feeding point E may be disposed at one end of the second radiator 121 near the second slot 1213. In one embodiment, the second antenna unit 120 further includes: and a third matching circuit M3. As shown in fig. 4, a third matching circuit M3 is provided between the third feeding point E and the third feed 13. In one embodiment, the output terminal of the third feed 13 is electrically connected to the input terminal of the third matching circuit M3, and the output terminal of the third matching circuit M3 is electrically connected to the third feeding point E of the third radiator 131. The third feed 13 is configured to generate an excitation signal (also referred to as a radio frequency signal), and the third matching circuit M3 is configured to filter noise of the excitation signal transmitted by the third feed 13, form a third radio frequency signal of a third frequency band, and transmit the third radio frequency signal to the second radiator 121, so as to excite the second radiator 121 to resonate in the third frequency band. In the antenna assembly shown in fig. 4, since the second radiator 121 is provided with the second ground terminal C, there is a ground return, and therefore, the isolation between the second radiator 121 and the MHB band signal transmitted and/or received by the first radiator 111 is satisfactory.

In an exemplary embodiment, fig. 5 is a schematic structural diagram of a fifth embodiment of an antenna assembly in the present application, and as shown in fig. 5, on the basis of the embodiment shown in fig. 4, the second antenna unit 120 further includes a second feed 12, where the second feed 12 is electrically connected to the second radiator 121, and is used to excite the second radiator 121 to resonate in a second frequency band, where in an embodiment, the second frequency band includes a GPS-L5 frequency band. As shown in fig. 5, the second radiator 121 has a second feeding point B, and the second feed 12 is electrically connected to the second feeding point B to excite the second radiator 121 to resonate in the second frequency band. In one embodiment, the second feeding point B may be disposed at one end of the second radiator 121 near the first slot 1112. In one embodiment, the second antenna unit 120 further includes: and a second matching circuit M2. As shown in fig. 5, the second matching circuit M2 is disposed between the second feeding point B and the second feed 12. In one embodiment, the output terminal of the second feed 12 is electrically connected to the input terminal of the second matching circuit M2, and the output terminal of the second matching circuit M2 is electrically connected to the second feeding point B of the second radiator 121. The second feed 12 is configured to generate an excitation signal (also referred to as a radio frequency signal), and the second matching circuit M2 is configured to filter noise of the excitation signal transmitted by the second feed 12, form a second radio frequency signal of a second frequency band, and transmit the second radio frequency signal to the second radiator 121, so as to excite the second radiator 121 to resonate in the second frequency band. It should be noted that, in the embodiment shown in fig. 5, the second frequency band may also be a GPS-L1 frequency band, and in this case, it is only required that the first radiator does not operate in the MHB frequency band which is the same as the GPS-L1 frequency band.

In an exemplary example, fig. 6 is a schematic structural diagram of a sixth embodiment of an antenna assembly in the embodiment of the present application, and as shown in fig. 6, based on the embodiment shown in fig. 5, the third antenna unit 130 further includes a fourth feed 14, where the fourth feed 14 is electrically connected to the third radiator 131, and is used to excite the third radiator 131 to resonate in a fourth frequency band, where in an embodiment, the fourth frequency band includes a UHB frequency band. As shown in fig. 6, the fourth feed 14 and the fifth feed 15 may share a line connected to the third antenna unit 130, the third radiator 131 has a fourth feeding point F, the fourth feed 14 is electrically connected to the fourth feeding point F to excite the third radiator 131 to resonate in the fourth frequency band, and the fifth feed 15 is electrically connected to the fourth feeding point F to excite the third radiator 131 to resonate in the fifth frequency band. In one embodiment, the third antenna unit 130 further includes: a fourth matching circuit M4, a fifth matching circuit M5. As shown in fig. 6, a fourth matching circuit M4 is provided between the fourth feeding point F and the fourth feed 14. In one embodiment, the output terminal of the fourth feed 14 is electrically connected to the input terminal of the fourth matching circuit M4, and the output terminal of the fourth matching circuit M4 is electrically connected to the fourth feeding point F of the third radiator 131. The fourth feed 14 is configured to generate an excitation signal (also referred to as a radio frequency signal), and the fourth matching circuit M4 is configured to filter noise of the excitation signal transmitted by the fourth feed 14, form a fourth radio frequency signal of a fourth frequency band, and transmit the fourth radio frequency signal to the third radiator 131, so as to excite the third radiator 131 to resonate in the fourth frequency band. As shown in fig. 5, a fifth matching circuit M5 is provided between the fourth feeding point F and the fifth feed 15. In one embodiment, the output terminal of the fifth feed 15 is electrically connected to the input terminal of the fifth matching circuit M5, and the output terminal of the fifth matching circuit M5 is electrically connected to the fourth feeding point F of the third radiator 131. The fifth feed 15 is configured to generate an excitation signal (also referred to as a radio frequency signal), and the fifth matching circuit M5 is configured to filter noise of the excitation signal transmitted by the fifth feed 15, form a fifth radio frequency signal in a fifth frequency band, and transmit the fifth radio frequency signal to the third radiator 131, so as to excite the third radiator 131 to resonate in the fifth frequency band.

In an exemplary example, as shown in fig. 1 or fig. 2, the first radiator 111 has a first feeding point a, and the first feed 11 is electrically connected to the first feeding point a, so that the first radiator 111 resonates at a first frequency band. In one embodiment, the first antenna element 110 further comprises: the first matching circuit M1. As shown in fig. 1 or fig. 2, the first matching circuit M1 is provided between the first feeding point a and the first feed 11. In one embodiment, the output terminal of the first feed 11 is electrically connected to the input terminal of the first matching circuit M1, and the output terminal of the first matching circuit M1 is electrically connected to the first feeding point a of the first radiator 111. The first feed 11 is configured to generate an excitation signal (also referred to as a radio frequency signal), and the first matching circuit M1 is configured to filter noise of the excitation signal transmitted by the first feed 11, form a first radio frequency signal of a first frequency band, and transmit the first radio frequency signal to the first radiator 111, so as to excite the first radiator 111 to resonate in the first frequency band. In one embodiment, an end of the first radiator 111 away from the first slot 1112 is a first ground G1, and the first ground G1 is electrically connected to the first ground reference GND 1.

In an exemplary embodiment, as shown in fig. 2, the fourth feed 14 and the fifth feed 15 share a line connected to the third antenna unit 130, the third radiator 131 has a fourth feeding point F, the fourth feed 14 is electrically connected to the fourth feeding point F to excite the third radiator 131 to resonate in the fourth frequency band, and the fifth feed 15 is electrically connected to the fourth feeding point F to excite the third radiator 131 to resonate in the fifth frequency band. In one embodiment, the third antenna unit 130 further includes: a fourth matching circuit M4 and a fifth matching circuit M5. As shown in fig. 2, a fourth matching circuit M4 is provided between the fourth feeding point F and the fourth feed 14. In one embodiment, the output terminal of the fourth feed 14 is electrically connected to the input terminal of the fourth matching circuit M4, and the output terminal of the fourth matching circuit M4 is electrically connected to the fourth feeding point F of the third radiator 131. The fourth feed 14 is configured to generate an excitation signal (also referred to as a radio frequency signal), and the fourth matching circuit M4 is configured to filter noise of the excitation signal transmitted by the fourth feed 14, form a fourth radio frequency signal of a fourth frequency band, and transmit the fourth radio frequency signal to the third radiator 131, so as to excite the third radiator 131 to resonate in the fourth frequency band. As shown in fig. 2, a fifth matching circuit M5 is provided between the fourth feeding point F and the fifth feed 15. In one embodiment, the output terminal of the fifth feed 15 is electrically connected to the input terminal of the fifth matching circuit M5, and the output terminal of the fifth matching circuit M5 is electrically connected to the fourth feeding point F of the third radiator 131. The fifth feed 15 is configured to generate an excitation signal (also referred to as a radio frequency signal), and the fifth matching circuit M5 is configured to filter noise of the excitation signal transmitted by the fifth feed 15, form a fifth radio frequency signal in a fifth frequency band, and transmit the fifth radio frequency signal to the third radiator 131, so as to excite the third radiator 131 to resonate in the fifth frequency band. In one embodiment, an end of the third radiator 131 away from the second slot 1213 is a fourth ground G4, and the fourth ground G4 is electrically connected to the fourth ground reference GND 4.

In an exemplary example, the fourth feed 14 and the fifth feed 15 may be separately disposed, that is, the fourth feed 14 is electrically connected to the third radiator 131 through one feeding point, and the fifth feed 15 is electrically connected to the third radiator 131 through another feeding point. In one embodiment, a feeding point electrically connected to the fourth feed 14 may be disposed on the radiator closer to the second slot 1213, and another feeding point electrically connected to the fifth feed 15 may be disposed on the radiator farther from the second slot 1213, as shown in fig. 2, for example, if one feeding point electrically connected to the fourth feed 14 is the fourth feeding point 14, then another feeding point electrically connected to the fifth feed 15 may be disposed between the fourth feeding point 14 and the fourth ground G4.

Fig. 7 is a schematic diagram of a composition structure of a seventh embodiment of an antenna assembly according to the embodiment of the present invention, in an exemplary embodiment, as shown in fig. 7, the second antenna unit 120 further includes at least two feed sources, such as a second feed source 12 and a third feed source 13, where the second feed source 12 is electrically connected to the second radiator 121 and is configured to excite the second radiator 121 to resonate in a second frequency band, and the third feed source 13 is electrically connected to the second radiator 121 and is configured to excite the second radiator 121 to resonate in a third frequency band, in an embodiment, the second frequency band is a GPS-L5 frequency band, and the third frequency band is an MHB frequency band.

In the antenna assembly of fig. 7, the first radiator 111 and the second radiator 121 are disposed at intervals and coupled to each other, that is, the first radiator 111 and the second radiator 121 have a common aperture. The third radiator 131 and the second radiator 121 are disposed at intervals and coupled to each other, that is, the third radiator 131 and the second radiator 121 have a common aperture. When the antenna assembly 10 is in operation, the first excitation signal generated by the first feed 11 may be coupled to the second radiator 121 via the first radiator 111. In other words, the first antenna unit 110 may transmit the electromagnetic wave signal by using not only the first radiator 111 but also the second radiator 121 of the second antenna unit 120, so that the first antenna unit 110 may operate in a wider frequency band. Likewise, the second antenna unit 120 may operate not only by using the second radiator 121 but also by using the first radiator 111 in the first antenna unit 110 and the third radiator 131 in the third antenna unit 130 to transmit electromagnetic wave signals, so that the second antenna unit 120 may operate in a wider frequency band. Likewise, the third antenna unit 130 may operate to transmit electromagnetic wave signals using not only the third radiator 131 but also the second radiator 121 of the second antenna unit 120, so that the third antenna unit 130 may operate in a wider frequency band. Therefore, the radiators between the first antenna unit 110 and the second antenna unit 120 are multiplexed with each other, and the radiators between the second antenna unit 120 and the third antenna unit 130 are multiplexed with each other, so that a multi-antenna unit is realized, the overall size of the antenna assembly 10 is reduced while the bandwidth of the antenna assembly 10 is increased, and the overall miniaturization of the electronic device is facilitated.

In one illustrative example, the second frequency band is the GPS-L5 frequency band and the third frequency band is the MHB frequency band. It should be noted that the frequency band of the MHB ranges from 1000MHz to 3000MHz, and the MHB frequency band may include all the electromagnetic wave signals of the medium-high frequency band such as LTE-MHB and NR-MHB. The GPS mentioned herein denotes Positioning, including but not limited to Global Positioning System (GPS), beidou, GLONASS, GALILEO, etc. The central resonance frequency point of the GPS-L5 frequency band is 1176 MHz.

The electromagnetic wave signals transmitted and/or received by the antenna assembly shown in fig. 7 under the coupling action at least cover an LTE-MHB frequency band, an NR-MHB frequency band, an LTE-LB frequency band, an NR-UHB frequency band and a GPS-L5 frequency band, so that at least 5 antenna common apertures are realized, the communication quality is improved, and the integral miniaturization of electronic equipment is facilitated.

In one illustrative example, the second antenna element 120 includes two feeds, a second feed 12 and a third feed 13. As shown in fig. 7, the second radiator 121 has a second feeding point B, and the second feed 12 is electrically connected to the second feeding point B to excite the second radiator 121 to resonate in the second frequency band. In one embodiment, the second feeding point B may be disposed at one end of the second radiator 121 near the first slot 1112. In one embodiment, the second antenna unit 120 further includes: and a second matching circuit M2. As shown in fig. 7, the second matching circuit M2 is disposed between the second feeding point B and the second feed 12. In one embodiment, the output terminal of the second feed 12 is electrically connected to the input terminal of the second matching circuit M2, and the output terminal of the second matching circuit M2 is electrically connected to the second feeding point B of the second radiator 121. The second feed 12 is configured to generate an excitation signal (also referred to as a radio frequency signal), and the second matching circuit M2 is configured to filter noise of the excitation signal transmitted by the second feed 12, form a second radio frequency signal of a second frequency band, and transmit the second radio frequency signal to the second radiator 121, so as to excite the second radiator 121 to resonate in the second frequency band. As shown in fig. 7, the second radiator 121 has a third feeding point E, and the third feed 13 is electrically connected to the third feeding point E to excite the second radiator 121 to resonate in the third frequency band. In one embodiment, the third feeding point E may be disposed at one end of the second radiator 121 near the second slot 1213. In one embodiment, the second antenna unit 120 further includes: and a third matching circuit M3. As shown in fig. 7, a third matching circuit M3 is provided between the third feeding point E and the third feed 13. In one embodiment, the output terminal of the third feed 13 is electrically connected to the input terminal of the third matching circuit M3, and the output terminal of the third matching circuit M3 is electrically connected to the third feeding point E of the third radiator 131. The third feed 13 is configured to generate an excitation signal (also referred to as a radio frequency signal), and the third matching circuit M3 is configured to filter noise of the excitation signal transmitted by the third feed 13, form a third radio frequency signal of a third frequency band, and transmit the third radio frequency signal to the second radiator 121, so as to excite the second radiator 121 to resonate in the third frequency band.

In an exemplary embodiment, as shown in fig. 7, at least one ground terminal may be further provided between the second feeding point B and the third feeding point E. In one embodiment, the second radiator 121 is provided with a second ground C and a third ground D, the second ground C is electrically connected to the second ground GND2, and the third ground D is electrically connected to the third ground GND 3. In an embodiment, a plurality of matching to ground may be further added between the second ground C and the third ground D to improve the isolation between the second electromagnetic wave signal and the third electromagnetic wave signal, that is, the isolation between Ant2 corresponding to the second feed 12 and Ant3 corresponding to the third feed 13.

The matching circuits (e.g., the first matching circuit M1, the second matching circuit M2, the third matching circuit M3, the fourth matching circuit M4, and the fifth matching circuit M5) in the embodiments of the present application include, but are not limited to, frequency-selective filter networks such as capacitors, inductors, and resistors arranged in series and/or in parallel, and the matching circuits may include a plurality of branches formed by capacitors, inductors, and resistors connected in series and/or in parallel, and switches for controlling on and off of the plurality of branches. By controlling the on-off of different switches, frequency selection parameters (such as a resistance value, an inductance value and a capacitance value) of the matching circuit can be adjusted, and then the filtering range of the matching circuit is adjusted, so that the matching circuit can obtain a radio frequency signal from an excitation signal transmitted by a feed source connected with the matching circuit, and the antenna transmits an electromagnetic wave signal of the radio frequency signal. Different matching circuits may be different, and the specific circuit implementation thereof is not used to limit the scope of protection of the present application. The matching circuit is used for adjusting the impedance of the radiator electrically connected with the matching circuit, so that the impedance of the radiator electrically connected with the matching circuit is matched with the frequency of the resonance generated by the radiator, and the receiving and transmitting power of the radiator is larger. By setting the frequency modulation circuit and adjusting the parameters of the frequency modulation circuit, the resonant frequency of each antenna can move along low frequency or high frequency, the ultra wide band of the antenna assembly 10 is realized, and the coverage and the communication quality of the antenna signal of the antenna assembly 10 are increased.

In an exemplary example, the second antenna unit 120 further includes a first frequency modulation circuit T1 and/or a second frequency modulation circuit T2, as shown in fig. 7, one end of the first frequency modulation circuit T1 is electrically connected to the second ground terminal C, and the other end of the first frequency modulation circuit T1 is connected to the second ground reference GND 2. One end of the second frequency modulation circuit T2 is electrically connected to the third ground terminal D, and the other end of the second frequency modulation circuit T2 is connected to the third ground reference GND 3. In the embodiment shown in fig. 7, the first tuning circuit T1 is directly electrically connected to the second radiator 121 to adjust the impedance matching characteristic of the second radiator 121, thereby implementing aperture adjustment. In other embodiments, the first tuning circuit T1 may also be electrically connected to the second matching circuit M2, and the first tuning circuit T1 and the second matching circuit M2 form a new matching circuit to adjust the impedance matching characteristic of the second radiator 121 to achieve matching adjustment. In the embodiment shown in fig. 7, the second tuning circuit T2 is directly electrically connected to the second radiator 121 to adjust the impedance matching characteristic of the second radiator 121, thereby implementing aperture adjustment. In other embodiments, the second fm circuit T2 may be further electrically connected to the third matching circuit M3, and the second fm circuit T2 and the third matching circuit M3 form a new matching circuit to adjust the impedance matching characteristic of the second radiator 121 to achieve matching adjustment.

In an illustrative example, the frequency modulation circuit (e.g., the first frequency modulation circuit T1, the second frequency modulation circuit T2) may include a combination of a switch and at least one of a capacitor and an inductor; and/or the frequency modulation circuit may include a variable capacitance. In one embodiment, the frequency modulation circuit may include, but is not limited to, a capacitor, an inductor, a resistor, and the like arranged in series and/or in parallel, and the frequency modulation circuit may include a plurality of branches formed by the capacitor, the inductor, and the resistor connected in series and/or in parallel, and a switch for controlling on/off of the plurality of branches. By controlling the on/off of the different switches, the frequency selection parameters (including resistance, inductance and capacitance) of the frequency modulation circuit can be adjusted, and then the impedance of the second radiator 121 is adjusted, and further the resonant frequency point of the second radiator 21 is adjusted. The specific circuit implementation of the frequency modulation circuit in the embodiment of the present application is not used to limit the protection scope of the present application. In one embodiment, the frequency modulation circuit may include, but is not limited to, a variable capacitor. The capacitance value of the variable capacitor is adjusted to adjust the frequency modulation parameter of the frequency modulation circuit, so as to adjust the impedance of the second radiator 121, and further adjust the resonant frequency point of the second radiator 121. By setting the frequency modulation circuit, the frequency modulation parameters (such as a resistance value, a capacitance value, and an inductance value) of the frequency modulation circuit are adjusted to perform impedance adjustment on the second radiator 121, so that the resonant frequency point of the second radiator 121 shifts towards a high frequency band or a low frequency band in a small range, thereby improving the frequency coverage of the second antenna unit 120 in a wider frequency band.

Taking the antenna assembly according to the seventh embodiment of the present application as an example, the operating principle of the first antenna (Ant1) (corresponding to the first feed 11) is as shown in fig. 8(a) to 8(d), which respectively show four main modes excited by Ant 1. With reference to fig. 9, fig. 9 is a graph illustrating a return loss curve of an Ant1 transmitting and/or receiving electromagnetic wave signals of a first frequency band in the antenna assembly shown in fig. 7, wherein in fig. 9, the horizontal axis represents frequency and the unit represents MHz; the vertical axis is Return Loss (RL) in dB. As shown in fig. 8(a), the first ground reference GND1 is an eighth to a quarter wavelength mode of the first slot 1112 for supporting transmission and/or reception of electromagnetic wave signals of the first sub-band, which is labeled as mode 1 in fig. 9 for convenience of illustration; as shown in fig. 8(b), the quarter-wavelength mode from the second ground reference GND2 to the first slot 1112 is used to support transmission and/or reception of electromagnetic wave signals of the second sub-band, and is labeled as mode 2 in fig. 9 for convenience of illustration; as shown in fig. 8(c), a quarter-wavelength mode from the first feeding point a to the first slot 1112 is used for supporting transmission and/or reception of electromagnetic wave signals of the third sub-band, and is labeled as mode 3 in fig. 9 for convenience of illustration; as shown in fig. 8(d), the quarter-wavelength mode from the second feeding point B to the first slot 1112 is used for supporting the transmission and/or reception of electromagnetic wave signals of the fourth sub-band, and is labeled as mode 4 in fig. 9 for convenience of illustration. In one embodiment, mode 1-mode 4 may cover bands such as B1/2/3/4/7/32/39/40/41, N41/77/78/79, etc.

Taking the antenna assembly of the seventh embodiment of the present application as an example, the operating principle of the second antenna (Ant2) (corresponding to the second feed 12) is shown in fig. 10, which shows that Ant2 excites mode 5. Referring to fig. 11, fig. 11 is a graph illustrating a return loss curve of the antenna assembly shown in fig. 7 when Ant2 transmits and/or receives electromagnetic wave signals in a second frequency band, where in fig. 11, the horizontal axis represents frequency and the unit represents MHz; the vertical axis is RL in dB. As shown in fig. 10, Ant2 is excited by capacitive coupling feed to cover the GPS-L5 band, labeled as mode 5 in fig. 11 for ease of illustration.

Taking the antenna assembly of the seventh embodiment of the present application as an example, the operating principle of the third antenna (Ant3) (corresponding to the third feed 13) is as shown in fig. 12(a) to 12(b), and two main modes from the excitation of Ant3 are shown respectively. With reference to fig. 13, fig. 13 is a graph illustrating a return loss curve of an Ant3 transmitting and/or receiving electromagnetic wave signals in a third frequency band in the antenna assembly shown in fig. 7, wherein in fig. 13, the horizontal axis represents frequency and the unit represents MHz; the vertical axis is RL in dB. As shown in fig. 12(a), the quarter-wavelength mode from the third ground reference GND3 to the second slot 1213 is used to support the transmission and/or reception of electromagnetic wave signals of the fifth sub-band, which is labeled as mode 6 in fig. 13 for convenience of illustration, and as shown in fig. 12(b), the quarter-wavelength mode from the third feeding point E to the second slot 1213 is used to support the transmission and/or reception of electromagnetic wave signals of the sixth sub-band, which is labeled as mode 7 in fig. 13 for convenience of illustration, and in one embodiment, modes 6 and 7 may cover the MHB band.

Fig. 14 is a schematic structural diagram of an eighth embodiment of an antenna assembly according to the present invention, and as shown in fig. 14, compared to the seventh embodiment shown in fig. 7, the eighth embodiment has a fifth ground G disposed on the second radiator 121, and the fifth ground G is electrically connected to a fifth reference ground GND 5. In one embodiment, the second antenna unit 120 further includes a third fm circuit T3, as shown in fig. 14, one end of the third fm circuit T2 is electrically connected to the fifth ground G, and the other end of the third fm circuit T3 is connected to the fifth ground GND 5.

Taking the antenna assembly according to the eighth embodiment of the present invention as an example, the operating principle of the fourth antenna (Ant4) (corresponding to the fourth feed 14) is shown in fig. 15(a) to 15(b), which respectively show two main modes from the excitation of Ant 4. With reference to fig. 16, fig. 16 is a graph illustrating a return loss curve of an Ant4 transmitting and/or receiving electromagnetic wave signals of a fourth frequency band in the antenna assembly shown in fig. 14, wherein in fig. 16, the horizontal axis represents frequency and the unit represents MHz; the vertical axis is RL in dB. As shown in fig. 15(a), the quarter-wavelength mode from the fourth feeding point F to the second slot 1213 is used to support the transmission and/or reception of electromagnetic wave signals of the seventh sub-band, and for convenience of illustration, is labeled as mode 8 in fig. 16, and as shown in fig. 15(b), the quarter-wavelength mode from the fifth reference GND5 to the second slot 1213 is used to support the transmission and/or reception of electromagnetic wave signals of the eighth sub-band, and for convenience of illustration, is labeled as mode 9 in fig. 16, and in one embodiment, the modes 8 and 9 may cover N77/78/79 and other frequency bands.

Taking the antenna assembly of the seventh embodiment of the present application as an example, the operating principle of Ant4 (corresponding to the fourth feed 14) is shown in fig. 17, which shows a main mode, i.e., mode 8', excited by Ant 4. In the antenna assembly of the seventh embodiment, the fifth ground G is not provided on the second radiator 121, so that the ground returning mode 9 shown in fig. 16 disappears, and the mode 8 shown in fig. 16 is converted into the mode 8' shown in fig. 12. In one embodiment, mode 8' may cover the N77/78 equivalent frequency band. Ant4 in the two operating principles of the antenna assembly shown in fig. 7 and the antenna assembly shown in fig. 14, the performance of N77/78 can be improved by about 2dB by providing the fifth ground terminal G on the second radiator 121.

Taking the antenna assembly of the seventh embodiment of the present application as an example, the operating principle of the fifth antenna (Ant5) (corresponding to the fifth feed 15) is shown in fig. 18, which shows mode 10, which is the main mode of the Ant5 excitation. With reference to fig. 19, fig. 16 is a graph illustrating a return loss curve of an Ant5 transmitting and/or receiving electromagnetic wave signals in a fifth frequency band in the antenna assembly shown in fig. 7, wherein in fig. 19, the horizontal axis represents frequency and the unit represents MHz; the vertical axis is RL in dB. As shown in fig. 18, the eighth to quarter wavelength modes of the fourth ground reference GND4 to the second slot 1213 are used to support the transmission and/or reception of electromagnetic wave signals of the ninth sub-band, labeled as mode 10 in fig. 19 for convenience of illustration, and may be excited with a capacitive coupling feed. In one embodiment, mode 10 may cover the LB band.

In an exemplary embodiment, the antenna assembly shown in fig. 1 or fig. 2 may further include: a proximity sensor and an inductance L, wherein the suspended metal piece 121 is electrically connected to the proximity sensor through the inductance L; wherein the suspended metal sheet 121 serves as a proximity sensor electrode for outputting an induced capacitance, which in one embodiment represents the proximity of a subject to be detected, such as a human body, to the antenna assembly; the proximity sensor is used to acquire the induced capacitance to determine whether to reduce the power of the antenna assembly.

In one embodiment, the proximity Sensor may be a specific absorption rate Sensor (SAR Sensor). As shown in fig. 20, the antenna assembly according to the first embodiment of the present application further conveniently achieves detection of whether the subject to be detected is close to the antenna assembly, and improves detection of the electronic device where the antenna assembly is located to close the subject to be detected, thereby achieving the purpose of intelligently reducing SAR.

In an exemplary example, based on the antenna assembly shown in fig. 7 and 14 of the present application, the antenna assembly may further include: an isolation device 16, a proximity sensor and an inductance L; wherein,

the isolation devices 16 may include a plurality of devices, and are connected between a ground terminal disposed on the second radiator 121 and the ground or between a feed point disposed on the second radiator 121 and a feed source, and the isolation devices 16 are used for isolating an induction signal generated when the body to be detected approaches the second radiator 121 and conducting an electromagnetic wave signal transmitted and/or received by the second radiator 121;

the second radiator 121 is electrically connected to the proximity sensor through an inductor L, one end of the inductor L is connected to the proximity sensor, and the other end of the inductor L is connected to one end of an isolation device 16 connected to the second radiator 121; wherein the second radiator 121 is multiplexed as a proximity sensor electrode for outputting a sensing capacitance, which in one embodiment represents the proximity of a subject to be sensed, such as a human body, to the antenna assembly; the proximity sensor is used to acquire the induced capacitance to determine whether to reduce the power of the antenna assembly.

In this embodiment, the judgment of the approaching state of the human body is realized by detecting the human body on the second radiator 121.

In one embodiment, the isolation device 16 may be disposed between the second radiator 121 and the second matching circuit M2, between the second radiator 121 and the first fm circuit T1, between the second radiator 121 and the third matching circuit M3, and between the second radiator 121 and the second fm circuit T2. In one embodiment, the isolation device 16 may be disposed between the second radiator 121 and the second matching circuit M2, between the second radiator 121 and the first fm circuit T1, between the second radiator 121 and the third matching circuit M3, between the second radiator 121 and the second fm circuit T2, and between the second radiator 121 and the third fm circuit T3.

In one embodiment, the isolation device 16 may include at least a dc blocking capacitance. The subject to be detected includes, but is not limited to, a human body.

As shown in fig. 21, in an embodiment, dc blocking capacitors (for example, a capacitance value of 22pF, which has substantially no effect on the antenna) are connected to the second feeding point B, the second grounding end C, the third grounding end D, and the third feeding point E, at this time, the second radiator 121 is suspended for the proximity sensor, because the proximity sensor needs to have a suspended metal body to sense a capacitance change Cuser caused by the approach of a human body, so as to achieve the purpose of detection, as shown in fig. 22. In the embodiment shown in fig. 21, taking the example of connecting the detection circuit at the second ground terminal C, in one embodiment, the inductance L (for example, the inductance L is 82nH) in the detection circuit is used for isolating the higher frequency so that the antenna is not substantially affected. It should be noted that the detection circuit may also be disposed at the second feeding point B, the third ground end D, or the third feeding point E, and may also be at any position of the second radiator 121.

FIG. 22 is a schematic diagram of the distribution of electric field lines when the target object is not near the antenna assembly; fig. 23 is a diagram illustrating the distribution of electric field lines when the object is close to the antenna assembly, and in conjunction with fig. 22 and 23, the suspended conductive plate enables the proximity sensor to detect a change in capacitance caused by the object approaching the antenna assembly 10. In fig. 23, the target object is illustrated as a finger of the user, and it is understood that in other embodiments, the target object may be, but is not limited to, other parts on the user, such as the head. The capacitance value Csensor in fig. 22 is Cenv, and the capacitance value Csensor in fig. 23 is Cenv + Cuser. Where CEnv is the original capacitance value and Cuser is the change in capacitance when the target object is close to the antenna assembly 10. Therefore, the antenna assembly 10 provided by the embodiment of the application achieves the technical effect of detecting whether the target object is close to the antenna assembly 10.

In one embodiment, the proximity sensor is a SAR sensor. As shown in fig. 21, the antenna assembly of the seventh embodiment and the antenna assembly of the eighth embodiment of the present application further conveniently achieve detection of whether a subject to be detected is close to the antenna assembly, and improve detection of the electronic device where the antenna assembly is located to close to the subject to be detected, thereby achieving the purpose of intelligently reducing SAR.

In an illustrative example, the antenna assembly 10 in the embodiments of the present application may further include a controller (not shown in the figures). The controller is electrically connected with one end of the proximity sensor far away from the inductor L. The controller is configured to determine whether the body to be detected is close to the second radiator 121 according to the magnitude of the inductive capacitance, and reduce the operating power of the second antenna unit 120 when the body to be detected is close to the second radiator 121.

Fig. 24 is a schematic structural diagram illustrating an eleventh embodiment of an antenna assembly according to the embodiment of the present application, and as shown in fig. 24, in an embodiment, the antenna assembly 10 may further include: the fourth radiator 141, electrically connected to the first matching circuit M1, operating in the MHB band or UHB band, for expanding the bandwidth; and/or, the fifth radiator 151 is electrically connected to the fourth matching circuit M4, operates in the UHB frequency band, and is configured to expand a bandwidth. In the embodiment of the application, the antenna branches are additionally arranged in the matching circuit, so that the bandwidth is expanded.

An embodiment of the present application further provides an electronic device including the antenna assembly of any one of the above. Exemplary, electronic devices may include, but are not limited to: a Mobile phone, a tablet Computer, a notebook Computer, a palm Computer, a vehicle-mounted electronic device, a wearable device, a super Mobile Personal Computer (UMPC), a netbook or a Personal Digital Assistant (PDA), a Network Attached Storage (NAS Network Attached Storage), a Personal Computer (PC), a television, a teller machine, a self-service machine, or the like, and the embodiments of the present application are not particularly limited. Taking an electronic device as an example of a mobile phone, fig. 25 is a layout diagram of an antenna assembly in the electronic device according to an embodiment of the present disclosure, as shown in fig. 25, a first antenna unit 110 is disposed on a top, a second antenna unit 120 is disposed on an upper corner, and a third antenna unit 130 is disposed on a side. In fig. 25, Ant1 corresponds to the first feed 11, Ant2 corresponds to the second feed 12, Ant3 corresponds to the first feed 13, Ant4 corresponds to the first feed 14, and Ant5 corresponds to the first feed 15. For simplicity, a schematic of the matching circuit is not shown in fig. 25. It should be noted that fig. 25 is only an example, the layout of the antenna assembly 10 on the electronic device may be adjusted according to actual situations, and fig. 25 is not intended to limit the protection scope of the present application.

The electronic equipment that this application embodiment provided with the antenna module 10 that this application any embodiment provided for electronic equipment has realized many antennas and has integrateed, has improved communication quality, is favorable to electronic equipment's whole miniaturization moreover. Furthermore, the detection of the SAR is conveniently realized to achieve reasonable control of the antenna power.

Although the embodiments disclosed in the present application are described above, the descriptions are only for the purpose of facilitating understanding of the present application, and are not intended to limit the present application. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the disclosure as defined by the appended claims.

Claims

1. An antenna assembly, comprising: the antenna comprises a first antenna unit, a second antenna unit and a third antenna unit; wherein,

the second antenna unit comprises a second radiator and a third feed source, a first gap is formed between the second radiator and the first radiator, the third feed source is electrically connected with the second radiator and used for exciting the second radiator to resonate in a third frequency band, and the third frequency band comprises an MHB frequency band; the second radiator is multiplexed as a proximity sensor electrode and used for sensing and representing the proximity degree of the body to be detected to the antenna assembly;

2. The antenna assembly of claim 1, the third antenna unit further comprising a fourth feed electrically connected to the third radiator for exciting the third radiator to resonate in a fourth frequency band, the fourth frequency band comprising the UHB band.

3. The antenna assembly of claim 1 or 2, wherein the second radiator has at least one ground disposed thereon;

the second antenna unit further comprises a first frequency modulation circuit, one end of the first frequency modulation circuit is electrically connected with the grounding end, and the other end of the first frequency modulation circuit is grounded.

4. The antenna assembly of claim 3, the second antenna unit further comprising: a third matching circuit; the third matching circuit is arranged between the third feed point and the third feed source, and is used for filtering clutter of an excitation signal transmitted by the third feed source, forming a third radio frequency signal of a third frequency band and transmitting the third radio frequency signal to the second radiator so as to excite the second radiator to resonate in the third frequency band.

5. The antenna assembly of claim 4, the second antenna unit further comprising: the second feed source is electrically connected with the second radiating body and used for exciting the second radiating body to resonate in a second frequency band, and the second frequency band comprises a GPS-L5 frequency band;

the second antenna unit further includes: a second matching circuit; the second radiator is provided with a second feed point, and the second matching circuit is arranged between the second feed point and the second feed source and used for filtering clutter of an excitation signal transmitted by the second feed source to form a second radio frequency signal of a second frequency band and transmit the second radio frequency signal to the second radiator so as to excite the second radiator to resonate in the second frequency band.

6. The antenna assembly of claim 2, further comprising: a proximity sensor and an inductance L;

the second radiator is electrically connected with the proximity sensor through the inductor L; the second radiator is used for outputting induction capacity which represents the proximity degree of the main body to be detected to the antenna assembly; the proximity sensor is used to acquire the induced capacitance to determine whether to reduce the power of the antenna assembly.

7. The antenna assembly of claim 5, further comprising: an isolation device, a proximity sensor and an inductance L;

the isolation devices are connected between a grounding end arranged on the second radiating body and the ground or between a feed point and a feed source arranged on the second radiating body, and are used for isolating induction signals generated when the body to be detected is close to the second radiating body and conducting the second radiating body;

the second radiator is electrically connected with the proximity sensor through the inductor L, one end of the inductor L is connected with the proximity sensor, and the other end of the inductor L is connected with one end of the isolation device, which is connected with the second radiator; the second radiator is used as a proximity sensor electrode and used for outputting induction capacitance representing the proximity degree of the body to be detected to the antenna assembly; the proximity sensor is used to acquire the induced capacitance to determine whether to reduce the power of the antenna assembly.

8. The antenna assembly of claim 7, wherein the isolation device is a dc blocking capacitance.

9. The antenna assembly of claim 6 or 7, wherein the proximity sensor is an electromagnetic wave absorption ratio (SAR) sensor.

10. The antenna assembly of claim 6 or 7, further comprising a controller electrically connecting an end of the proximity sensor distal from the inductance L;

the controller is used for judging whether the body to be detected is close to the second radiator according to the size of the induction capacitance and reducing the working power of the body to be detected when the body to be detected is close to the second radiator.

11. The antenna assembly of claim 1, 2, 6, or 7, wherein the first radiator has a first feed point;

the first antenna element further comprises: a first matching circuit; the first matching circuit is arranged between the first feed point and the first feed source and used for filtering clutter of an excitation signal transmitted by the first feed source to form a first radio-frequency signal of the first frequency band and transmitting the first radio-frequency signal to the first radiator so as to excite the first radiator to resonate in the first frequency band.

12. The antenna assembly of claim 11, wherein an end of the first radiator distal from the first slot is a first ground, the first ground electrically connected to a first reference ground.

13. The antenna assembly of claim 11, further comprising a fourth radiator for extending bandwidth; and the fourth radiator is electrically connected with the first matching circuit and works in an MHB frequency band or an UHB frequency band.

14. The antenna assembly of claim 2, 6, or 7, wherein the fourth feed and the fifth feed share a line connecting the third radiator;

the third radiator is provided with a fourth feed point, the fourth feed source is electrically connected with the fourth feed point to excite the third radiator to resonate in the fourth frequency band, and the fifth feed source is electrically connected with the fourth feed point to excite the third radiator to resonate in the fifth frequency band.

15. The antenna assembly of claim 14, the third antenna unit further comprising: a fourth matching circuit and a fifth matching circuit;

the fourth matching circuit is arranged between the fourth feed point and the fourth feed source, and is used for filtering clutter of an excitation signal transmitted by the fourth feed source to form a fourth radio frequency signal of the fourth frequency band and transmitting the fourth radio frequency signal to the third radiator so as to excite the third radiator to resonate in the fourth frequency band;

the fifth matching circuit is arranged between the fourth feed point and the fifth feed source, and is configured to filter clutter of an excitation signal transmitted by the fifth feed source, form a fifth radio frequency signal of the fifth frequency band, and transmit the fifth radio frequency signal to the third radiator, so as to excite the third radiator to resonate in the fifth frequency band.

16. The antenna assembly of claim 15, wherein an end of the third radiator distal from the second slot is a fourth ground, the fourth ground electrically connected to a fourth reference ground.

17. The antenna assembly of claim 15, further comprising: a fifth radiator for expanding bandwidth; and the fifth radiator is electrically connected with the fourth matching circuit and works in a UHB frequency band.

18. The antenna assembly of claim 2, 6 or 7, wherein the fourth feed and the fifth feed are separately provided, the fourth feed electrically connecting the third radiator through one feed point, the fifth feed electrically connecting the third radiator through another feed point.

19. The antenna assembly of claim 5 or 7, wherein the second radiator has a second feed point, the second feed being electrically connected to the second feed point for exciting the second radiator to resonate in the second frequency band;

the second radiator is provided with a third feeding point, and the third feed source is electrically connected to the third feeding point so as to excite the second radiator to resonate in the third frequency band.

20. The antenna assembly of claim 19, the second antenna unit further comprising: a second matching circuit and a third matching circuit;

the second matching circuit is arranged between the second feed point and the second feed source and used for filtering clutter of an excitation signal transmitted by the second feed source to form a second radio-frequency signal of the second frequency band and transmitting the second radio-frequency signal to the second radiator so as to excite the second radiator to resonate in the second frequency band;

the third matching circuit is arranged between the third feed point and the third feed source, and is used for filtering clutter of an excitation signal transmitted by the third feed source, forming a third radio frequency signal of a third frequency band and transmitting the third radio frequency signal to the second radiator so as to excite the second radiator to resonate in the third frequency band.

21. The antenna assembly as claimed in claim 20, further providing at least one ground between the second feed point and the third feed point for electrically connecting a reference ground.

22. The antenna assembly of claim 21, wherein the grounds include a second ground and a third ground; the second ground terminal is electrically connected to a second reference ground, and the third ground terminal is electrically connected to a third reference ground.

23. The antenna assembly of claim 22, the second antenna unit further comprising first and/or second frequency modulation circuitry to adjust an impedance matching characteristic of the second radiator;

one end of the first frequency modulation circuit is electrically connected with the second grounding end, and the other end of the first frequency modulation circuit is connected with the second reference ground; one end of the second frequency modulation circuit is electrically connected with the third grounding end, and the other end of the second frequency modulation circuit is connected with the third reference ground.

24. The antenna assembly of claim 5 or 7, wherein the first radiator has a first feed point, the first feed being electrically connected to the first feed point; one end of the first radiator, which is far away from the first gap, is a first grounding end, and the first grounding end is electrically connected with a first reference ground;

the second radiator is provided with a second feeding point, and the second feed source is electrically connected to the second feeding point so as to excite the second radiator to resonate in the second frequency band; the second radiator is provided with a third feeding point, and the third feed source is electrically connected to the third feeding point so as to excite the second radiator to resonate in the third frequency band; the ground terminals include a second ground terminal and a third ground terminal; the second grounding end is electrically connected with a second reference ground, and the third grounding end is electrically connected with a third reference ground;

the third radiator is provided with a fourth feed point, the fourth feed source is electrically connected with the fourth feed point so as to excite the third radiator to resonate in the fourth frequency band, and the fifth feed source is electrically connected with the fourth feed point so as to excite the third radiator to resonate in the fifth frequency band; and one end of the third radiator, which is far away from the second gap, is a fourth grounding end, and the fourth grounding end is electrically connected with a fourth reference ground.

25. The antenna assembly of claim 24, wherein a first antenna corresponding to the first feed is to generate:

an eighth to quarter wavelength mode of the first reference ground to the first slot for supporting transmission and/or reception of electromagnetic wave signals of a first sub-band;

a quarter-wavelength mode of the second reference ground to the first slot for supporting transmission and/or reception of electromagnetic wave signals of a second sub-band;

a quarter-wavelength mode from the first feed point to the first slot for supporting transmission and/or reception of electromagnetic wave signals of a third sub-band;

and the quarter-wavelength mode from the second feeding point to the first slot is used for supporting the transmission and/or the reception of electromagnetic wave signals of a fourth sub-band.

26. The antenna assembly of claim 25, wherein the pattern covers B1/B2/B3/B4/B7/B32/B39/B40/B41, N41/N77/N78/N79 frequency bands.

27. The antenna assembly of claim 25, wherein a second antenna corresponding to the second feed is excited by a capacitively coupled feed covering a GPS-L5 frequency band.

28. The antenna assembly of claim 25, wherein a third antenna corresponding to the third feed is to produce:

a quarter-wavelength mode of the third reference ground to the second slot for supporting transmission and/or reception of electromagnetic wave signals of a fifth sub-band;

and the quarter-wavelength mode from the third feeding point to the second slot is used for supporting the transmission and/or the reception of electromagnetic wave signals of a sixth sub-frequency band.

29. The antenna assembly of claim 28, wherein the modes cover MHB bands.

30. The antenna assembly of claim 25, further having a fifth ground disposed on the second radiator, the fifth ground electrically connected to a fifth reference ground; a fourth antenna corresponding to the fourth feed is configured to generate:

a quarter-wavelength mode from the fourth feeding point to the second slot, for supporting transmission and/or reception of electromagnetic wave signals of a seventh sub-band;

a quarter-wavelength mode of said fifth reference ground to said second slot for supporting transmission and/or reception of electromagnetic wave signals of an eighth sub-band.

31. The antenna assembly of claim 30, wherein the pattern covers an N77/N78/N79 frequency band.

32. The antenna assembly of claim 25, wherein the electromagnetic wave signals generated by the fourth antenna corresponding to the fourth feed cover an N77/N78 frequency band.

33. The antenna assembly of claim 25, wherein a fifth antenna corresponding to the fifth feed is to produce:

an eighth to a quarter wavelength mode of the fourth reference ground to the second slot for supporting transmission and/or reception of electromagnetic wave signals of a ninth sub-band.

34. The antenna assembly of claim 33, wherein the modes cover LB frequency bands.

35. An electronic device, comprising the antenna assembly of any one of claims 1-34.

36. The electronic device of claim 35, wherein a first antenna element of the antenna assembly is disposed at a top of the electronic device, a second antenna element of the antenna assembly is disposed at an upper corner of the electronic device, and a third antenna element of the antenna assembly is disposed at a side of the electronic device.