CN115036676A

CN115036676A - Antenna assembly and electronic equipment

Info

Publication number: CN115036676A
Application number: CN202110242779.8A
Authority: CN
Inventors: 吴小浦
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2021-03-03
Filing date: 2021-03-03
Publication date: 2022-09-09
Anticipated expiration: 2041-03-03
Also published as: CN115036676B

Abstract

The application discloses an antenna module and an electronic device. The antenna assembly comprises a radiator, a radio frequency front end unit, a first filter and a detection device. The radiating body comprises a first sub radiating body and a second sub radiating body, and the first sub radiating body is coupled with the second sub radiating body through a coupling gap; the first sub-radiator comprises a free end, a first coupling end, a grounding point and a feeding point, wherein the grounding point and the feeding point are arranged between the free end and the first coupling end, and the feeding point is arranged between the grounding point and the first coupling end. The grounding point and the grounding end are electrically connected with the grounding electrode. The second sub radiator comprises a second coupling end and a grounding end. The radio frequency front end unit is electrically connected with the feed point. The first filter is electrically connected between the radiator and the radio frequency front end unit and between the radiator and the ground. The detection device is electrically connected with the radiator and is used for detecting the magnitude of the induction signal generated when the radiator is in operation. The application provides an antenna assembly and an electronic device which can improve data transmission rate and approach induction function.

Description

Antenna assembly and electronic equipment

Technical Field

The application relates to the technical field of communication, in particular to an antenna assembly and electronic equipment.

Background

With the development of communication technology, the popularity of electronic devices with communication functions is higher and higher, and the requirement for the internet speed is higher and higher. Therefore, how to improve the data transmission rate of the antenna assembly in the electronic device and realize the proximity sensing function becomes a technical problem to be solved.

Disclosure of Invention

The application provides an antenna assembly and electronic equipment capable of improving data transmission rate and achieving a proximity sensing function.

In a first aspect, an embodiment of the present application provides an antenna assembly, including:

the radiating body comprises a first radiating sub-body and a second radiating sub-body, the first radiating sub-body comprises a free end, a first coupling end, a grounding point and a feeding point, the grounding point and the feeding point are arranged between the free end and the first coupling end, the grounding point is used for electrically connecting a grounding electrode, and the feeding point is arranged between the grounding point and the first coupling end; the second sub-radiator comprises a second coupling end and a grounding end, a coupling gap is formed between the first coupling end and the second coupling end, and the grounding end is used for electrically connecting the ground pole;

the radio frequency front end unit is electrically connected with the feed point;

a first filter, a part of which is electrically connected between the radiator and the radio frequency front end unit, and another part of which is electrically connected between the radiator and the ground, the first filter being used for blocking an induction signal generated by the radiator when the body to be measured approaches and conducting a radio frequency signal received and transmitted by the radiator; and

and the detection device is electrically connected with the radiating body and used for detecting the size of the induction signal generated by the radiating body.

In a second aspect, an embodiment of the present application provides an electronic device, including a housing and at least one antenna assembly, where the antenna assembly is disposed in the housing or integrated with the housing.

According to the antenna assembly and the electronic device, the grounding point of the first radiating sub-body is designed to be located between the two ends of the first radiating sub-body, and the second radiating sub-body is capacitively coupled with the first radiating sub-body, so that currents of the first radiating sub-body and the second radiating sub-body are distributed in various ways, various resonance modes are generated, the antenna assembly can support a wide bandwidth, the throughput and the data transmission rate of the antenna assembly when the antenna assembly is applied to the electronic device are improved, and the communication quality of the electronic device is improved; in addition, the radiator on the multiplexing antenna assembly is an induction electrode for detecting the approach of a main body to be detected such as a human body and the like, and the induction signal and the radio frequency signal are separated through the first filter, so that the dual functions of the communication performance of the antenna assembly and the induction of the main body to be detected are realized, the antenna assembly has the approaching induction function, the function of the antenna assembly is increased, the utilization rate of devices is further improved, and the whole volume of the electronic equipment is reduced.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an electronic device according to an embodiment of the present disclosure;

FIG. 2 is a schematic diagram of a disassembled structure of the electronic device shown in FIG. 1;

fig. 3 is a schematic structural diagram of a first antenna assembly provided in an embodiment of the present application;

FIG. 4 is a schematic illustration of various resonance modes produced by the antenna assembly provided in FIG. 3;

fig. 5 is a schematic structural diagram of a second antenna assembly provided by an embodiment of the present application;

fig. 6 is a schematic structural diagram of a third antenna assembly provided in an embodiment of the present application;

FIG. 7 is a schematic diagram of a first current distribution of the antenna assembly provided in FIG. 3;

FIG. 8 is a schematic illustration of a first current density distribution for the antenna assembly provided in FIG. 3;

FIG. 9 is a second schematic current distribution diagram of the antenna assembly provided in FIG. 3;

FIG. 10 is a second schematic current density distribution diagram for the antenna assembly provided in FIG. 3;

FIG. 11 is a third schematic current distribution diagram for the antenna assembly provided in FIG. 3;

FIG. 12 is a third schematic current density distribution diagram for the antenna assembly provided in FIG. 3;

FIG. 13 is a graph of the radiation efficiency of the antenna assembly provided in FIG. 3;

fig. 14 is a schematic structural diagram of a first matching circuit according to an embodiment of the present disclosure;

fig. 15 is a schematic structural diagram of a second first matching circuit provided in an embodiment of the present application;

fig. 16 is a schematic structural diagram of a third first matching circuit provided in the embodiment of the present application;

fig. 17 is a schematic structural diagram of a fourth first matching circuit provided in the embodiment of the present application;

fig. 18 is a schematic structural diagram of a fifth first matching circuit provided in an embodiment of the present application;

fig. 19 is a schematic structural diagram of a sixth first matching circuit according to an embodiment of the present application;

fig. 20 is a schematic structural diagram of a seventh first matching circuit according to an embodiment of the present application;

fig. 21 is a schematic structural diagram of an eighth first matching circuit provided in an embodiment of the present application;

fig. 22 is a schematic structural diagram of a fourth antenna assembly provided by an embodiment of the present application;

fig. 23 is a schematic structural diagram of a fifth antenna assembly provided in the embodiments of the present application;

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

fig. 25 is a schematic structural diagram of a seventh antenna assembly provided in an embodiment of the present application;

fig. 26 is a schematic structural diagram of an eighth antenna assembly provided in the embodiments of the present application;

fig. 27 is a schematic structural diagram of a ninth antenna assembly provided in an embodiment of the present application;

fig. 28 is a schematic structural diagram of a tenth antenna assembly provided in an embodiment of the present application;

fig. 29 is a schematic structural diagram of an eleventh antenna assembly provided in an embodiment of the present application;

fig. 30 is a schematic structural view of a first arrangement position of an antenna assembly provided by an embodiment of the present application;

fig. 31 is a schematic structural diagram of a second arrangement position of an antenna assembly provided by an embodiment of the present application;

fig. 32 is a schematic structural diagram of a third arrangement position of an antenna assembly provided by an embodiment of the present application;

FIG. 33 is a schematic structural view of the bezel provided in FIG. 2;

fig. 34 is a schematic structural diagram illustrating a first arrangement of an antenna element and a bezel according to an embodiment of the present application;

fig. 35 is a schematic structural diagram illustrating a second arrangement of an antenna element and a bezel according to an embodiment of the present application;

fig. 36 is a schematic structural diagram of a first arrangement mode in which an electronic device provided by an embodiment of the application has multiple antenna assemblies;

fig. 37 is a schematic structural diagram of a second arrangement mode in which an electronic device provided by an embodiment of the present application has multiple antenna assemblies.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. Furthermore, reference herein to "an embodiment" or "an implementation" means that a particular feature, structure, or characteristic described in connection with the embodiment or implementation can be included in at least one embodiment of the present application. The appearances of the phrase 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. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

Referring to fig. 1, fig. 1 is a schematic structural diagram of an electronic device according to an embodiment of the present disclosure. The electronic device 1000 includes an antenna assembly 100. The antenna assembly 100 is used for transceiving electromagnetic wave signals to realize a communication function of the electronic device 1000. The location of the antenna assembly 100 within the electronic device 1000 is not specifically limited by the present application. The electronic device 1000 further includes the display screen 300 and the housing 200 that are connected to each other in a covering manner. The antenna assembly 100 may be disposed inside the housing 200 of the electronic device 1000, or partially integrated with the housing 200, or partially disposed outside the housing 200. Of course, the antenna assembly 100 may also be disposed on a retractable component of the electronic device 1000, in other words, at least a portion of the antenna assembly 100 is also capable of extending out of the electronic device 1000 along with the retractable component of the electronic device 1000 and retracting into the electronic device 1000 along with the retractable component; alternatively, the overall length of the antenna assembly 100 is extended as the telescopic assembly of the electronic device 1000 is extended.

The electronic device 1000 includes, but is not limited to, a telephone, a television, a tablet computer, a mobile phone, a camera, a personal computer, a notebook computer, an in-vehicle device, an earphone, a watch, a wearable device, a base station, an in-vehicle radar, a Customer Premise Equipment (CPE), and other devices capable of transceiving electromagnetic wave signals. In the present application, the electronic device 1000 is taken as a mobile phone as an example, and other devices may refer to the detailed description in the present application.

For convenience of description, referring to a view angle of the electronic device 1000 in fig. 1, a width direction of the electronic device 1000 is defined as an X-axis direction, a length direction of the electronic device 1000 is defined as a Y-axis direction, and a thickness direction of the electronic device 1000 is defined as a Z-axis direction. The X-axis direction, the Y-axis direction and the Z-axis direction are vertical to each other. Wherein the direction indicated by the arrow is the forward direction.

Referring to fig. 2, the housing 200 includes a frame 210 and a rear cover 220. The middle plate 410 is formed in the frame 210 by injection molding, and a plurality of mounting grooves for mounting various electronic devices are formed on the middle plate 410. The middle plate 410 and the border 210 together become a middle frame 420 of the electronic device 100. The display screen 300, the middle frame 420 and the rear cover 220 form accommodating spaces on both sides of the middle frame 420 after being covered. The electronic device 1000 further includes a battery, a camera, a microphone, a receiver, a speaker, a face recognition module, a fingerprint recognition module, and other devices that are disposed in the accommodating space and can implement the basic functions of the mobile phone, which are not described in detail in this embodiment.

The antenna assembly 100 provided in the present application is specifically described below with reference to the accompanying drawings, and of course, the antenna assembly 100 provided in the present application includes, but is not limited to, the following embodiments.

Referring to fig. 3, the antenna assembly 100 at least includes a radiator 10, a radio frequency front end unit 20, a first filter 30 and a detection device 40.

It is understood that the radiator 10 is made of a conductive material. The radiator 10 and the rf front-end unit 20 form part of an antenna structure. The radiator 10, the first filter 30 and the detection device 40 form a proximity sensing structure of a subject to be measured. The subject to be measured includes, but is not limited to, a head, a hand, and other body parts of a human body. Since the radiator 10 can be used as not only a transmitting/receiving port for electromagnetic wave signals but also an inductive electrode for proximity inductive signals, the antenna assembly 100 provided by the present application integrates dual functions of transmitting/receiving electromagnetic wave signals and proximity induction, and the antenna assembly 100 has multiple functions and a small volume. When the antenna assembly 100 is applied to the electronic device 1000, the electronic device 1000 can be made small in overall size while ensuring that the electronic device 1000 has a communication function and a proximity detection function.

Referring to fig. 3, the radiator 10 includes a first sub-radiator 11 and a second sub-radiator 12. In this embodiment, the shapes of the first sub-radiator 11 and the second sub-radiator 12 are all linear bars. Of course, in other embodiments, the shapes of the first sub-radiator 11 and the second sub-radiator 12 may also be a bent bar shape or other shapes.

Referring to fig. 3, the first sub radiator 11 includes a free end 111 and a first coupling end 112. In this embodiment, the free end 111 and the first coupling end 112 are opposite ends of the first sub-radiator 11 in a straight-line shape. In other embodiments, the first sub-radiator 11 is bent, the free end 111 and the first coupling end 112 may not be opposite to each other along a straight line, but the free end 111 and the first coupling end 112 are two ends of the first sub-radiator 11. The first sub-radiator 11 further has a grounding point a and a feeding point B disposed between the free end 111 and the first coupling end 112.

The ground GND includes a first ground reference GND1 and a second ground reference GND 2. The ground GND is part of the antenna component 100 or of the electronic device 1000. The first ground reference GND1 and the second ground reference GND2 may be integrally formed or separately formed.

The grounding point A is used for electrically connecting the first reference ground GND 1. The feeding point B is located between the grounding point a and the first coupling end 112. The specific positions of the grounding point a and the feeding point B on the first sub-radiator 11 are not limited in this application.

Referring to fig. 3, the second sub-radiator 12 includes a second coupling end 121 and a ground end 122. In this embodiment, the second coupling end 121 and the ground end 122 are opposite ends of the first sub-radiator 11 in a straight line shape. The first sub-radiator 11 and the second sub-radiator 12 may be arranged in a straight line or substantially in a straight line (i.e., with a small tolerance in the design process). Of course, in other embodiments, the first sub-radiator 11 and the second sub-radiator 12 may be arranged in a staggered manner in the extending direction to form an avoidance space and the like.

Referring to fig. 3, the first coupling end 112 and the second coupling end 121 are disposed opposite to each other and spaced apart from each other. A coupling gap 13 is formed between the first coupling end 112 and the second coupling end 121. The coupling slot 13 is a gap between the first coupling end 112 of the first sub radiator 11 and the second coupling end 121 of the second sub radiator 12, for example, the width of the coupling slot 13 is 0.5mm to 2mm, but is not limited to this size. The first sub radiator 11 and the second sub radiator 12 can generate capacitive coupling through the coupling slot 13. In one of the angles, the first sub-radiator 11 and the second sub-radiator 12 can be regarded as two parts formed by the radiator 10 being separated by the coupling slot 13.

The first sub radiator 11 and the second sub radiator 12 are capacitively coupled through the coupling slot 13. The term "capacitive coupling" refers to that an electric field is generated between the first sub-radiator 11 and the second sub-radiator 12, a signal of the first sub-radiator 11 can be transmitted to the second sub-radiator 12 through the electric field, and a signal of the second sub-radiator 12 can be transmitted to the first sub-radiator 11 through the electric field, so that the first sub-radiator 11 and the second sub-radiator 12 can achieve electrical signal conduction even in an off state.

In this embodiment, the first sub-radiator 11 can generate an electric field under the excitation of the signal source 21, and the electric field energy can be transferred to the second sub-radiator 12 through the coupling slot 13, so that the second sub-radiator 12 generates an excitation current.

The ground terminal 122 of the second sub-radiator 12 is used to electrically connect to the second ground reference GND 2.

Optionally, referring to fig. 3, the rf front-end unit 20 is electrically connected to the feeding point B. The rf front end unit 20 provides an excitation signal to the radiator 10 to excite the radiator 10 to transmit and receive electromagnetic wave signals. Optionally, the rf front-end unit 20 includes a first matching circuit M1 and a signal source 21.

Referring to fig. 3, one end of the first matching circuit M1 is electrically connected to the feeding point B. The signal source 21 is electrically connected to the other end of the first matching circuit M1. The signal source 21 is a radio frequency transceiver chip for transmitting radio frequency signals or a power feeding portion electrically connected to the radio frequency transceiver chip for transmitting radio frequency signals. The first matching circuit M1 may include a plurality of adjustable devices such as a selection branch formed by a switch, a capacitor, an inductor, a resistor, etc., and a variable capacitor.

Referring to fig. 4, the radiator 10 generates a plurality of resonant modes (e.g., a, b, and c in fig. 4) under the excitation of the signal source 21. The resonant mode is characterized by the antenna assembly 100 having a high electromagnetic wave transceiving efficiency at and around the resonant frequency. In the present application, the radiator 10 has high electromagnetic wave transceiving efficiency at and near a plurality of resonant frequencies under the excitation of the signal source 21, and can further support transceiving of electromagnetic wave signals in multiple frequency bands. In this embodiment, the absolute value of the retrieved wave loss curve is greater than or equal to 5dB, which is a reference value with high electromagnetic wave transceiving efficiency.

It is understood that the various frequency bands supported by the radiator 10 are continuous or discontinuous. The multiple frequency bands are continuous, that is, two adjacent frequency bands supported by the radiator 10 at least partially overlap. The multiple frequency bands are not continuous, which means that there is no overlap between two adjacent frequency bands supported by the radiator 10.

Referring to fig. 4, in the present embodiment, at least some of the frequency bands supported by the radiator 10 (for example, two resonant modes, three resonant modes, or all resonant modes of the three resonant modes) are consecutive and form a wider bandwidth H. The plurality of resonant modes cover a bandwidth H greater than or equal to 1G. It can be understood that the radiator 10 simultaneously generates the above-mentioned multiple resonant modes under the excitation of the signal source 21, and the above multiple resonant modes form a continuous and wider bandwidth H, so as to improve the data throughput and the data transmission rate when the antenna assembly 100 is applied to the electronic device 1000, and improve the communication quality of the electronic device 1000. In addition, when the bandwidth of the antenna assembly 100 is wide, an adjustable device is not needed to switch different frequency bands, so that the adjustable device is omitted, the cost is saved, and the structure of the antenna assembly 100 is simple.

Optionally, the first filter 30 is electrically connected between the radiator 10 and the rf front end unit 20, and between the radiator 10 and the ground GND, including but not limited to the following embodiments: referring to fig. 3, the first filter 30 is electrically connected between the first sub radiator 11 and the rf front end unit 20, so that the first sub radiator 11 is used as an inductive electrode or a main inductive electrode; alternatively, referring to fig. 5, the first filter 30 is electrically connected to the second sub radiator 12 and the ground GND, so that the second sub radiator 12 is used as an inductive electrode or a main inductive electrode; alternatively, referring to fig. 6, the first filter 30 is electrically connected to both the first sub-radiator 11 and the rf front-end unit 20, and also electrically connected to the second sub-radiator 12 and the ground GND, so that both the first sub-radiator 11 and the second sub-radiator 12 are used as sensing electrodes.

The first filter 30 is also used to form a matching circuit electrically connected between the feeding point B and the signal source 21 with the first matching circuit M1 of the rf front-end unit 20. In other words, the first filter 30 can also be used as a part of the matching circuit for tuning the impedance matching between the signal source 21 and the feeding point B, so as to reduce the loss of the rf signal fed to the radiator 10 and improve the signal conversion efficiency of the radiator 10; but also for adjusting the frequency offset of the resonance mode generated at the first sub-radiator 11, etc.

The first filter 30 is used to block an induction signal generated by the radiator 10 when the subject to be measured approaches and conduct the radio frequency signal received and transmitted by the radiator 10 (the radio frequency signal includes a radio frequency signal between the radiator 10 and the ground GND and a radio frequency signal between the radiator 10 and the radio frequency front end unit 20), so as to prevent the induction signal from affecting the antenna assembly 100 to receive and transmit electromagnetic wave signals. In other words, by providing the first filter 30, the sensing signal generated when the subject to be measured approaches the radiator 10 does not affect the transmission and reception of the antenna signal by the antenna assembly 100. Optionally, the sensing signal is a dc signal, the rf signal is an ac signal, and the first filter 30 is a capacitive device to block the sensing signal and pass the ac signal. Optionally, the sensing signal is a low-frequency ac signal, the rf signal is a high-frequency ac signal, and the first filter 30 is a device for passing high frequency and blocking low frequency. The detection device 40 is electrically connected to any position of the radiator 10, and the detection device 40 is configured to detect a magnitude of an induction signal generated by the radiator 10. The induced signal may be a current signal, or a voltage signal converted from a current signal, or an inductance signal converted from a current signal conversion layer. Optionally, the detecting device 40 is a device for detecting a current signal, a voltage signal or an inductance signal, such as a micro galvanometer, a micro current transformer, a current comparator, a voltage comparator, and the like.

In the antenna assembly 100 and the electronic device 1000 provided in the present application, by designing that the grounding point a of the first sub-radiator 11 is located between two ends of the first sub-radiator 11, and the second sub-radiator 12 is capacitively coupled to the first sub-radiator 11, so that currents of the first sub-radiator 11 and the second sub-radiator 12 have multiple distribution modes, and further multiple resonance modes are generated, so that the antenna assembly 100 can support a wider bandwidth, and further throughput and data transmission rate of the antenna assembly 100 when applied to the electronic device 1000 are improved, and communication quality of the electronic device 1000 is improved; in addition, the radiator 10 on the antenna assembly 100 is multiplexed as an induction electrode for detecting the approach of a subject to be tested, such as a human body, and the induction signal and the radio frequency signal are separated by the first filter 30, so that the dual functions of the communication performance of the antenna assembly 100 and the induction of the subject to be tested are realized, the functions of the antenna assembly 100 are increased, the utilization rate of devices is further improved, and the overall volume of the electronic device 1000 is reduced.

The shape and structure of the first sub-radiator 11 and the second sub-radiator 12 are not specifically limited in this application, and the shapes of the first sub-radiator 11 and the second sub-radiator 12 include, but are not limited to, a strip, a sheet, a rod, a coating, a film, and the like. When the first sub-radiator 11 and the second sub-radiator 12 are strip-shaped, the extension tracks of the first sub-radiator 11 and the second sub-radiator 12 are not limited in this application, so that the first sub-radiator 11 and the second sub-radiator 12 can be extended in a straight line, a curved line, a multi-section bending and other tracks. The radiator 10 may be a line with uniform width on the extending track, or a strip with gradually changing width and having a widened area with different widths.

Optionally, specific forms of the ground GND include, but are not limited to, a metal plate, a metal layer formed inside a flexible circuit board, and the like. The grounding point a of the first sub radiator 11 is electrically connected to the first ground reference GND1 through a conductive member such as a grounding elastic piece, solder, or conductive adhesive. When the antenna assembly 100 is disposed in the electronic device 1000, the ground GND is electrically connected to a ground reference of the electronic device 1000.

For the antenna structure, in the general technology, the effective efficiency bandwidth of the antenna is not wide enough, for example, in the coverage of the middle and high frequency band (1000MHz to 3000 MHz). For example, in the case of 1710MHz to 2690MHz (B3/N3+ B1/N1+ B7/N7), at least two resonant modes are used for covering, and the frequency bandwidths of the resonant modes are small and are arranged at intervals, so that it is difficult to simultaneously cover B3/N3+ B1/N1, B1/N1+ B7/N7, and B3/N3+ B1/N1+ B7/N7, which results in poor signal or insufficient miniaturization of the antenna in the coverage of some frequency bands. It should be noted that the above frequency bands are only examples, and should not be taken as a limitation of the frequency bands that can be radiated by the present application.

The antenna assembly 100 provided in the present application designs the structures and the grounding points of the first sub radiator 11 and the second sub radiator 12, so that the currents of the first sub radiator 11 and the second sub radiator 12 have multiple distribution manners, and the antenna assembly 100 further generates multiple resonance modes while having a simple structure, and the bandwidth of the frequency band that can be supported by the multiple resonance modes is greater than or equal to 1G, so that the antenna assembly 100 can support a wider bandwidth, and further improves the throughput and the data transmission rate when the antenna assembly 100 is applied to the electronic device 1000, and when the antenna assembly 100 is applied to the medium-high frequency band (e.g., 1710MHz to 2690MHz), the antenna assembly 100 can simultaneously support B3/N3+ B1/N1+ B7/N7, so that the antenna assembly 100 has at least a simple and compact structure and has a higher bandwidth on the application frequency band of B3/N3+ B1/N1+ B7/N7 Efficiency and data transmission rate. Wherein, B3/N3 includes the condition that either one or both of B3 and N3 are selected to exist. The definitions of B1/N1 and B7/N7 are similar to those of B3/N3, and are not repeated herein. Of course, the antenna assembly 100 provided by the present application may also be applied to 1000MHz to 2000MHz, 3000MHz to 0MHz, and the like.

Referring to fig. 3 and 4, the radiator 10 generates at least three resonant modes under the excitation of the signal source 21 of the rf front-end unit 20. In other words, the radiator 10 has high transceiving efficiency at least at three frequencies under the excitation of the signal source 21. The at least three resonant modes include, but are not limited to, a first resonant mode a, a second resonant mode b, and a third resonant mode c. The first resonant mode a, the second resonant mode b and the third resonant mode c are all generated simultaneously. The resonant frequency of the first resonant mode a, the resonant frequency of the second resonant mode b, and the resonant frequency of the third resonant mode c are respectively the first frequency f1, the second frequency f2, and the third frequency f 3. For the following description, the magnitudes of the first frequency f1, the second frequency f2 and the third frequency f3 are related to the increasing order of the first frequency f1, the second frequency f2 and the third frequency f 3. The first frequency f1, the second frequency f2 and the third frequency f3 are close to each other, so that the return loss value of the first resonant mode a, the return loss value of the second resonant mode B and the return loss value of the third resonant mode c are continuous under-5 dB (-5dB is merely an example value, but not limited to the value), and the continuous frequency bands form a wider bandwidth, thereby simultaneously supporting a plurality of different frequency bands planned by a plurality of groups of operators, such as B1, B3, B7, N1, N3, N7 and the like, and being beneficial to meeting different operator indexes.

Referring to FIG. 4, the first resonant mode a can support B3/N3, the second resonant mode B can support B1/N1, and the third resonant mode c can support B7/N7. It can be seen from fig. 4 that the frequency band a1 supported by the first resonant mode a, the frequency band B1 supported by the second resonant mode B, and the frequency band C1 supported by the third resonant mode C are consecutive and can cover a bandwidth greater than or equal to 1G. In other words, the antenna assembly 100 of the present application is capable of supporting B3/N3+ B1/N1+ B7/N7 simultaneously.

In some possible embodiments, referring to fig. 3 and 4, the first sub-radiator 11 generates at least two of a first resonant mode a, a second resonant mode b and a third resonant mode c under the excitation of the signal source 21, and the second sub-radiator 12 generates at least one of the first resonant mode a, the second resonant mode b and the third resonant mode c under the excitation of the signal source 21.

Since the resonant frequencies of the first, second and third resonant modes a, b and c are sequentially increased, the effective electrical length of the radiator 10 supporting the first resonant mode a, the effective electrical length of the radiator 10 supporting the second resonant mode b and the effective electrical length of the radiator 10 supporting the third resonant mode c are sequentially decreased. Since the middle portion of the first sub-radiator 11 is grounded and electrically connected to the signal source 21, in other words, the grounding point a and the feeding point B can divide the first sub-radiator 11, so that the first sub-radiator 11 can form a plurality of radiation sections with different effective electrical lengths, for example, a radiation section can be formed between the free end 111 and the first coupling end 112, and another radiation section can be formed between the grounding point a and the first coupling end 112, and these radiation sections can enable the first sub-radiator 11 to generate a plurality of resonant modes.

For example, the first sub-radiator 11 is excited by the signal source 21 to generate a first resonant mode a, the first sub-radiator 11 and the second sub-radiator 12 are excited by the signal source 21 to generate a second resonant mode b, and the first sub-radiator 11 and the second sub-radiator 12 from the ground point a to the first coupling end 112 are excited by the signal source 21 to generate a third resonant mode c. The frequency of the third resonant mode c is relatively high, the required electrical length of the radiator 10 is relatively short, and the second sub-radiator 12 is arranged to assist in generating the third resonant mode c, so that the length of the second sub-radiator 12 is relatively short, so that the whole length of the radiator 10 is relatively small, the superposition size of the antenna assembly 100 is reduced, and the miniaturization of the antenna assembly 100 is promoted.

Referring to fig. 4, the frequency band supported by the first resonance mode a is a first frequency band T1. The frequency band supported by the second resonance mode b is a second frequency band T2. The frequency band supported by the third resonant mode c is a third frequency band T3. The first frequency band T1, the second frequency band T2 and the third frequency band T3 are aggregated to form a target application frequency band T4. The bandwidth H of the target application frequency band T4 is greater than or equal to 1.4G. The relative bandwidth is greater than or equal to 50%. Optionally, the first frequency band T1 supported by the first resonant mode a, the second frequency band T2 supported by the second resonant mode b, and the third frequency band T3 supported by the third resonant mode c are all corresponding frequency bands having a return loss of less than-5 dB. The first frequency band T1, the second frequency band T2, and the third frequency band T3 are continuous (continuous with overlapping portions therebetween) and are aggregated to form the target application frequency band T4. The difference between the maximum frequency and the minimum frequency of the target application frequency band T4 is greater than or equal to 1.4G. It should be noted that, by adjusting the effective electrical length and the feeding position of the radiator 10, the widths of the target application frequency bands T4 can be adjusted to be 1.8G, 2G, 2.5G, 3G, and so on.

From the perspective of the current side, the antenna assembly 100 generates at least three current distributions under the excitation of the signal source 21, including a first current distribution R1, a second current distribution R2 and a third current distribution R3.

Referring to fig. 7 and 8, the current distribution corresponding to the first resonant mode a includes, but is not limited to, the first current distribution R1: from the first coupled end 112 to the ground point a and from the free end 111 to the ground point a. Specifically, a part of the current flows from the first coupling end 112 to the ground point a, and another part of the current flows from the free end 111 to the ground point a, wherein the current flows in opposite directions. In the first resonant mode a, a small amount of current is generated by the coupling action between the second sub radiator 12 and the first sub radiator 11, and the current flows from the ground terminal 122 to the second coupling terminal 121. The above current distribution generates the first resonance mode a.

Referring to fig. 9 and 10, the current distribution corresponding to the second resonant mode b includes, but is not limited to, the second current distribution R2: from the ground terminal 122 to the ground point a and to the free end 111. Specifically, the current in the first sub-radiator 11 flows from the first coupling end 112 to the free end 111, and the second sub-radiator 12 generates a current under the coupling action of the first sub-radiator 11, and the current flows from the ground end 122 to the second coupling end 121. In other words, the current of the first sub-radiator 11 flows in the same direction as the current of the second sub-radiator 12.

Referring to fig. 9 and 10, the second current distribution R2 includes a first sub-current distribution R21 and a second sub-current distribution R22. Wherein, the first sub-current distribution R21 is a current distribution on the first sub-radiator 11 to generate a first sub-resonant mode b 1; the second sub-current distribution R22 is a current distribution on the second sub-radiator 12 to generate a second sub-resonant mode b 2. The first sub-resonance mode b1 forms a second resonance mode b in cooperation with the second sub-resonance mode b 2. In other words, the second resonance mode b includes the first sub-resonance mode b1 and the second sub-resonance mode b 2. The first sub-resonant mode b1 is generated by the first sub-radiator 11 under excitation of the signal source 21. The second sub-resonant mode b2 is generated by the second sub-radiator 12 through capacitive coupling of the first sub-radiator 11. Optionally, the first sub-resonance mode b1 is a dipole mode, and the second sub-resonance mode b2 is a parasitic radiation mode generated by the second sub-radiator 12. As such, since the current of the first sub-radiator 11 and the current of the second sub-radiator 12 flow in the same direction, the parasitic radiation pattern and the dipole pattern can be mutually enhanced to generate stronger radiation efficiency. In other words, since the second resonant mode b substantially has a convergence of two sub-resonant modes, the resonant frequencies of the two sub-resonant modes are close to each other, thereby forming a resonant mode to enhance the radiation efficiency and the bandwidth.

Referring to fig. 11 and 12, the current distribution corresponding to the third resonant mode c includes, but is not limited to, the third current distribution R3: from the first coupling end 112 to the ground point a and from the second coupling end 121 to the ground 122. The current of the first coupling end 112 flows to the grounding point a and returns to the ground, and the current of the second coupling end 121 flows to the grounding end 122 and returns to the ground. In other words, the current of the first sub-radiator 11 flows in the opposite direction to the current of the second sub-radiator 12. A third resonant mode c is generated between the first coupling end 112 of the first sub-radiator 11 and the ground point a, and between the second coupling end 121 of the second sub-radiator 12 and the ground end 122 under the action of the signal source 21.

It can be understood that, from the current distribution of the first resonant mode a, the second resonant mode b and the third resonant mode c, the currents corresponding to the first resonant mode a, the second resonant mode b and the third resonant mode c have partially the same flow direction, for example, the flow direction from the first coupling end 112 to the grounding point a, so that the three resonant modes can be mutually enhanced.

In the present application, referring to fig. 4, the target application frequency band T4 formed by polymerizing the first frequency band T1, the second frequency band T2 and the third frequency band T3 includes, but is not limited to, 1.6GHz to 3GHz, 2GHz to 3.4GHz, 2.6GHz to 4GHz, 3.6GHz to 5GHz, and the like. Of course, when the bandwidth of the target application frequency band T4 is 2G, 3G, etc., the target application frequency band T4 formed by aggregating the first frequency band T1, the second frequency band T2 and the third frequency band T3 includes but is not limited to 1GHz to 3GHz, 2GHz to 4GHz, 3GHz to 6GHz, etc. This is not exemplified. In this embodiment, the target application frequency band T4 formed by aggregating the first frequency band T1, the second frequency band T2 and the third frequency band T3 covers 1.6GHz to 3 GHz.

Optionally, the target application frequency band T4 can support either or both of the LTE 4G band and the NR 5G band. When a target application frequency band T4 formed by aggregating a first frequency band T1, a second frequency band T2 and a third frequency band T3 covers 1.6 GHz-3GHz, the support frequency bands of the antenna assembly 100 for the LTE 4G frequency band include but are not limited to at least one of B1, B2, B3, B4, B7, B32, B38, B39, B40, B41, B48 and B66, and the support frequency bands of the antenna assembly 100 for the NR 5G frequency band include but are not limited to at least one of N1, N2, N3, N4, N7, N32, N38, N39, N40, N41, N48 and N66. The antenna assembly 100 provided by the present application can cover any combination of the above NR 5G frequency band and LTE 4G frequency band. Of course, the antenna assembly 100 may load the LTE 4G signal alone, or load the 5G NR signal alone, or may also load the LTE 4G signal and the 5G NR signal simultaneously, that is, implement dual connectivity between the 4G radio access network and the 5G-NR (LTE NR Double Connect, EN-DC).

The frequency band received and transmitted by the antenna assembly 100 provided by this embodiment includes a plurality of carriers (i.e., radio waves of a specific frequency) aggregated, i.e., Carrier Aggregation (CA) is implemented, so as to increase transmission bandwidth, improve throughput, and improve signal transmission rate.

The above listed frequency bands may be medium and high frequency bands to which multiple operators will apply, and the antenna assembly 100 provided by the present application may simultaneously support any one or combination of multiple frequency bands, so that the antenna assembly 100 provided by the present application may support multiple electronic device 1000 models corresponding to different operators, and different antenna structures do not need to be adopted for different operators, thereby further improving the application range and compatibility of the antenna assembly 100.

From the perspective of the structure of the antenna assembly 100, referring to fig. 7, 9 and 11, the grounding point a of the first sub-radiator 11 is located between the free end 111 and the first coupling end 112, so that the first sub-radiator 11 and the signal source 21 form a T-shaped antenna, and the T-shaped antenna can form a first current distribution R1 and a first sub-current distribution R21, so that the first sub-radiator 11 generates a plurality of resonant modes in a medium-high frequency band (not limited to a medium-high frequency band). For example, the first resonance mode a and the first sub-resonance mode b1 described above, and the resonance frequencies of the first resonance mode a and the first sub-resonance mode b1 are close, so that a wider bandwidth is formed. Further, the second sub radiator 12 is coupled to the first sub radiator 11 to generate a second sub current distribution R22 on the second sub radiator 12, so that the first sub current distribution R21 and the second sub current distribution R22 jointly generate a second resonant mode b. A third current distribution R3 is generated on the first sub-radiator 11 and the second sub-radiator 12, so as to generate a third resonant mode c. The lengths of the first sub radiator 11 and the second sub radiator 12 are set so that the resonant frequencies of the first resonant mode a, the second resonant mode b and the third resonant mode c are all similar to form a wider bandwidth.

Optionally, the wavelength corresponding to the resonant frequency of the first resonant mode a is the first wavelength. The length of the radiator 10 between the free end 111 and the first coupling end 112 is (1/4) - (3/4) times of the first wavelength. In the case that no other matching circuit is provided except for the first matching circuit M1, the length of the radiator 10 between the free end 111 and the first coupling end 112 is 1/2 times of the first wavelength, so as to provide for higher signal transceiving efficiency of the subsequent antenna assembly 100 at the first frequency f1 and the second frequency f 2. Of course, in the case that a matching circuit is further provided in addition to the first matching circuit M1, the accessed matching circuit may adjust the effective electrical length of the first sub radiator 11, for example, the accessed capacitive matching circuit may decrease the length of the radiator 10 between the free end 111 and the first coupling end 112, and the accessed inductive matching circuit may increase the length of the radiator 10 between the free end 111 and the first coupling end 112, thereby adjusting the length of the radiator 10 between the free end 111 and the first coupling end 112 to (1/4) times to (3/4) times of the first wavelength. Of course, in practical applications, the length of the radiator 10 between the free end 111 and the first coupling end 112 is adjusted to be (1/5) times, or (4/5) times, the first wavelength, and so on.

For example, when the target application frequency covers B3/N3+ B1/N1+ B7/N7, the range of the first frequency f1 includes, but is not limited to, (1.71GHz-1.88GHz), in this embodiment, the first frequency f1 is 1.72GHz, and thus, the length range of the first sub radiator 11 can be determined. Of course, the first frequency f1 may vary with the frequency band covered by the target application frequency.

The present application does not limit the specific location of the ground point a. Optionally, the length of the radiator 10 between the ground point a and the free end 111 is (1/8) - (3/4) times the length of the first sub-radiator 11.

In other words, the position of the ground point a may be within the range from (1/8) to (3/4) from the free end 111 on the first sub radiator 11. By the above design or in combination with the design of the matching circuit on the first sub-radiator 11 (detailed description is given later), the first sub-radiator 11 can form current distributions such as the first current distribution R1 and the first sub-current distribution R21, and further generate the first resonant mode a, the first sub-resonant mode b1, and assist in generating the third resonant mode c, so as to generate a wider bandwidth and improve throughput and number transmission rate. In addition, the grounding point a has a larger setting position range, and then the position selectable range of the set grounding connector is larger, and when the antenna assembly 100 is arranged on the electronic device 1000, the position selectable range of the grounding connector is larger, so that the position selectable range of the antenna assembly 100 is larger, and the antenna assembly 100 is more favorable for being installed on the electronic device 1000.

Of course, 1/8 and 3/4 are merely exemplary and not limited thereto, and in other embodiments, the length of the radiator 10 between the ground point a and the free end 111 may be slightly less than 1/8 the length of the first sub-radiator 11, or slightly greater than 3/4 the length of the first sub-radiator 11.

Alternatively, the length of the radiator 10 between the ground point a and the free end 111 may also be (1/4) - (3/4) times the length of the first sub-radiator 11. In other words, the position of the ground point a may be within the range from (1/4) to (3/4) from the free end 111 on the first sub radiator 11. By the above design, the grounding point a is located closer to the middle portion of the first sub-radiator 11, which is beneficial to increase the bandwidth and efficiency of the antenna assembly 100.

Optionally, the length of the radiator 10 between the ground point a and the free end 111 is (3/8) - (5/8) times the length of the first sub-radiator 11. In other words, the position of the ground point a may be within the range from (3/8) to (5/8) from the free end 111 on the first sub radiator 11. By the above design, the grounding point a is located closer to the middle portion of the first sub-radiator 11, which is beneficial to increase the bandwidth and efficiency of the antenna assembly 100.

For example, the ground point a may be near the middle portion of the first sub-radiator 11. Further, the length between the ground point a and the free end 111 may be slightly larger than the length between the ground point a and the first coupling end 121, for example, the length between the ground point a and the free end 111 is about 18mm, and the length between the ground point a and the first coupling end 121 is about 16 mm.

Take the length of the radiator 10 between the free end 111 and the first coupling end 112 as large as (1/2) times the first wavelength as an example. The length of the radiator 10 between the ground point a and the free end 111 is 1/2 times the length of the first sub-radiator 11, and at this time, the length of the radiator 10 between the ground point a and the free end 111 is (1/4) times the first wavelength.

Further, by providing a capacitive matching circuit between the ground point a and the free end 111, the length of the first sub radiator 11 between the ground point a and the free end 111 can be reduced, and the length of the radiator 10 between the ground point a and the free end 111 is 1/4 times the length of the first sub radiator 11, which is not limited to this, and may be 1/5, 2/5, and so on in practical applications. By providing a grounded capacitive matching circuit between the ground point a and the first coupling end 112, the length of the first sub-radiator 11 between the ground point a and the first coupling end 112 can be reduced, and the length of the radiator 10 between the ground point a and the free end 111 is 3/4 times the length of the first sub-radiator 11, which is not limited to this, and may be 3/5, 4/5, and so on in practical applications. Correspondingly, the length of the radiator 10 between the ground point a and the free end 111 is (1/8) - (3/8) times the first wavelength.

Optionally, the capacitive matching circuit includes a capacitor, and the capacitor of the capacitive matching circuit is directly electrically connected to the first sub-radiator 11, so that the capacitor of the capacitive matching circuit can also be used as a part of the first filter 30 (for example, the subsequent first sub-filter 31), thereby achieving multiple purposes of a device, reducing the number of devices and occupied space, and improving the integration level of the device.

The wavelength corresponding to the resonant frequency of the third resonant mode c is the second wavelength. The length of the radiator 10 between the second coupling end 121 and the ground end 122 is (1/8) - (3/8) times of the second wavelength. In other words, the length of the second sub radiator 12 is (1/8) - (3/8) times the wavelength corresponding to the third frequency f 3. When the second sub-radiator 12 is not provided with the matching circuit, the length of the second sub-radiator 12 is (1/4) times of the wavelength corresponding to the third frequency f3, so that the second sub-radiator 12 generates a higher transceiving efficiency at the third frequency f3, and further generates a resonance at the third frequency f3 to form a third resonance mode c. When the capacitive matching circuit is disposed on the second sub-radiator 12, the length of the second sub-radiator 12 may be 1/8 times the wavelength corresponding to the third frequency f 3. When an inductive matching circuit is disposed on the second sub-radiator 12, the length of the second sub-radiator 12 may be 3/8 times the wavelength corresponding to the third frequency f 3.

For example, when the target application frequency covers B3/N3+ B1/N1+ B7/N7, the range of the third frequency f3 includes, but is not limited to, (2.5GHz-3GHz), in this embodiment, the third frequency f3 is 2.76GHz, and thus, the length range of the second sub-radiator 12 can be determined. Of course, the third frequency f3 may vary with the frequency band covered by the target application frequency.

Further, by adjusting the length of the first sub radiator 11, the length of the second sub radiator 12, the position of the feeding point B, and the position of the grounding point a, the position of the second frequency f2 can be adjusted, so that the first frequency f1, the second frequency f2, and the third frequency f3 are close to each other and can support a wider bandwidth.

In summary, the present application is directed to the structure of the antenna assembly 100, such that the radiator 10 of the antenna assembly 100 includes the first sub-radiator 11 and the second sub-radiator 12, wherein the ground point a of the first sub-radiator 11 is located between two ends of the first sub-radiator 11, the second sub-radiator 12 is a parasitic radiator of the first sub-radiator 11, and the first sub-radiator 11 is similar to a radiator of a "T" type antenna, such that the first sub-radiator 11 generates at least two resonant modes. The second sub-radiator 12 can reinforce the resonant mode of the second sub-radiator 12, so that the first sub-radiator 11 can generate a first resonant mode a, the first sub-radiator 11 and the second sub-radiator 12 can jointly generate a second resonant mode b, and by designing and optimizing the length of the first sub-radiator 11, the position of the grounding point a is designed and optimized, so that the resonant frequency of the first resonant mode a and the resonant frequency of the second resonant mode b are close to each other to form a larger bandwidth and cover a frequency band to be covered. Since a portion of the first sub-radiator 11 and a portion of the second sub-radiator 12 form an antenna structure with two ends grounded back, the first sub-radiator 11 and the second sub-radiator 12 generate a third resonant mode c, and the length of the second sub-radiator 12 is designed and optimized to make the resonant frequency of the third resonant mode c close to the resonant frequency of the third resonant mode c, and make the resonant frequencies of the first resonant mode a, the second resonant mode b, and the third resonant mode c continuous and form a bandwidth greater than or equal to 1G bandwidth, thereby improving the throughput of the antenna assembly 100 and increasing the internet access rate of the electronic device 1000.

Referring to fig. 13, fig. 13 illustrates the efficiency of the antenna assembly 100 provided herein in a very full screen environment. The dashed line in fig. 13 is the radiation efficiency curve of the antenna assembly 100. The solid line is the matched total efficiency curve for the antenna assembly 100. The application uses the display screen 200, metal alloy etc. in the middle frame 420 as the ground pole GND, the radiator 10 of the antenna assembly 100 with the distance between the ground pole GND is less than or equal to 0.5mm, in other words, the clearance area of the antenna assembly 100 is 0.5mm, completely meets the environmental requirements of the present mobile phone and the like of the electronic device 1000. As can be seen from fig. 13, the antenna assembly 100 maintains high efficiency between 1.7GHz and 2.7GHz even in a very small headroom region. For example, the antenna assembly 100 has an efficiency of greater than or equal to-5 dB between 1.7GHz and 2.7 GHz.

As can be seen from the above, the antenna assembly 100 provided in the present application still has high radiation efficiency with a very small clearance area, and the antenna assembly 100 is applied to the electronic device 1000 with a smaller clearance area, so that the overall size of the electronic device 1000 can be reduced compared to other antennas that need a larger clearance area to have high efficiency.

Referring to fig. 14 to 21 together, fig. 14 to 21 are schematic diagrams of the first matching circuit M1 according to various embodiments, respectively. The present application does not limit the specific structure of the first matching circuit. The first matching circuit M1 includes one or more of the following frequency-selective filter circuits.

Referring to fig. 14, the first matching circuit M1 includes a bandpass circuit formed by an inductor L0 and a capacitor C0 connected in series.

Referring to fig. 15, the first matching circuit M1 includes a band-stop circuit formed by an inductor L0 and a capacitor C0 in parallel.

Referring to fig. 16, the first matching circuit M1 includes a band-pass or band-stop circuit formed by an inductor L0, a first capacitor C1, and a second capacitor C2. The inductor L0 is connected in parallel with the first capacitor C1, and the second capacitor C2 is electrically connected to a node where the inductor L0 and the first capacitor C1 are electrically connected.

Referring to fig. 17, the first matching circuit M1 includes a band-pass or band-stop circuit formed by a capacitor C0, a first inductor L1, and a second inductor L2. The capacitor C0 is connected in parallel with the first inductor L1, and the second inductor L2 is electrically connected to a node where the capacitor C0 is electrically connected to the first inductor L1.

Referring to fig. 18, the first matching circuit M1 includes a band-pass or band-stop circuit formed by an inductor L0, a first capacitor C1, and a second capacitor C2. The inductor L0 is connected in series with the first capacitor C1, one end of the second capacitor C2 is electrically connected to the first end of the inductor L0, which is not connected to the first capacitor C1, and the other end of the second capacitor C2 is electrically connected to the end of the first capacitor C1, which is not connected to the inductor L0.

Referring to fig. 19, the first matching circuit M1 includes a band-pass or band-stop circuit formed by a capacitor C0, a first inductor L1, and a second inductor L2. The capacitor C0 is connected in series with the first inductor L1, one end of the second inductor L2 is electrically connected to the end of the capacitor C0 not connected to the first inductor L1, and the other end of the second inductor L2 is electrically connected to the end of the first inductor L1 not connected to the capacitor C0.

Referring to fig. 20, the first matching circuit M1 includes a first capacitor C1, a second capacitor C2, a first inductor L1, and a second inductor L2. The first capacitor C1 is connected in parallel with the first inductor L1, the second capacitor C2 is connected in parallel with the second inductor L2, and one end of the whole body formed by the second capacitor C2 and the second inductor L2 in parallel is electrically connected with one end of the whole body formed by the first capacitor C1 and the first inductor L1 in parallel.

Referring to fig. 21, the first matching circuit M1 includes a first capacitor C1, a second capacitor C2, a first inductor L1, and a second inductor L2, the first capacitor C1 is connected in series with the first inductor L1 to form a first unit 101, the second capacitor C2 is connected in series with the second inductor L2 to form a second unit 102, and the first unit 101 is connected in parallel with the second unit 102.

The above is an illustration of the specific structure of the antenna assembly 100. In some embodiments, the antenna assembly 100 is provided in the electronic device 1000. The following description will exemplify an embodiment in which the antenna assembly 100 is provided in the electronic device 1000. For the electronic device 1000, the antenna assembly 100 is at least partially integrated with the housing 200 or is disposed entirely within the housing 200. The radiator 10 of the antenna assembly 100 is disposed on the housing 200 or inside the housing 200.

The above is the basic structure of the antenna assembly 100, and the antenna assembly 100 is further optimized by the following embodiments to further reduce the stacking size of the antenna assembly 100.

Optionally, referring to fig. 22, the first matching circuit M1 includes a first sub-circuit M11. One end of the first sub-circuit M11 is electrically connected to the feeding point B. The other end of the first sub-circuit M11 is electrically connected to ground. The first sub-circuit M11 is capacitive when operating in the fourth frequency band. The fourth frequency band is located in the frequency band corresponding to the first resonant mode a, the second resonant mode b and the third resonant mode c. For example, the fourth frequency band may be a continuous frequency band formed by the first resonant mode a, the second resonant mode b and the third resonant mode c. When the first sub-circuit M11 is capacitive when operating in the fourth frequency band, the resonant frequencies of the first resonant mode a, the second resonant mode b, and the third resonant mode c can be shifted toward the low frequency end, and the first sub-circuit M11 is similar to "connecting an effective electrical length" to the first sub-radiator 11 between the grounding point a and the first coupling end 112, so that the actual length of the first sub-radiator 11 between the grounding point a and the first coupling end 112 can be relatively reduced without changing the position of the frequency to be resonated. In this way, miniaturization of the first sub-radiator 11 is achieved.

Optionally, the first sub-circuit M11 includes, but is not limited to, a capacitor, a series or parallel circuit including a capacitor, an inductor, and a resistor, etc.

Optionally, when the first sub-circuit M11 includes a capacitor directly electrically connected to the first sub-radiator 11, the current can also be used as a part of the first filter 30, so as to implement isolation of the first sub-radiator 11 from other parts of the first sub-circuit M11 with respect to the sensing signal, and reduce the influence of the sensing signal on the rf signal transmitted by the first sub-circuit M11.

Referring to fig. 23, the first sub radiator 11 further has a first matching point C located between the free end 111 and the ground point a. The antenna assembly 100 further comprises a second matching circuit M2. One end of the second matching circuit M2 is electrically connected to the first matching point C. Further, the first filter 30 is disposed at one end of the second matching circuit M2 and electrically connected to the first matching point C, and the first sub radiator 11 is in a floating state. The other end of the second matching circuit M2 is grounded. The second matching circuit M2 includes a plurality of adjustable devices such as a selection branch formed by a switch, a capacitor, an inductor, a resistor and the like, and a variable capacitor and the like. The adjustable devices are used for adjusting the positions of the three resonance modes, the performance of a single frequency band can be improved by changing the mode positions, and the ENDC/CA combination of different frequency bands can be better met.

By adding the second matching circuit M2, the second matching circuit M2 can adjust the resonant frequencies of the first resonant mode a and the second resonant mode b, for example, when the second matching circuit M2 is capacitive, the resonant frequencies of the first resonant mode a and the second resonant mode b can be moved toward the low frequency end; when the second matching circuit M2 is inductive, the resonant frequencies of the first resonant mode a and the second resonant mode b can be shifted toward the high frequency side. Through the adjustment, the first resonance mode a and the second resonance mode b can cover the actually required frequency band and generate resonance at the actually required frequency.

Optionally, referring to fig. 24, the second matching circuit M2 includes a second sub-circuit M21. The second sub-circuit M21 is electrically connected to the first matching point C. The second sub-circuit M21 is capacitive when operating in the fifth frequency band. The fifth frequency band is located in the frequency band corresponding to the first resonance mode a and the second resonance mode b. For example, the fifth frequency band may be a continuous frequency band formed by the first resonance mode a and the second resonance mode b. When the second sub-circuit M21 is capacitive when operating in the fifth frequency band, the resonant frequencies of the first resonant mode a and the second resonant mode b can be shifted toward the low frequency end, and the second sub-circuit M21 is similar to "connecting an effective electrical length" to the first sub-radiator 11 between the free end 111 and the grounding point a, so that the actual length of the first sub-radiator 11 between the free end 111 and the grounding point a can be relatively reduced without changing the position of the frequency to be resonated. In this way, miniaturization of the first sub-radiator 11 is achieved. After the distance between the grounding point A and the free end 111 is reduced, the grounding point A can be connected to the 1/8-3/4 positions of the first sub radiator 11.

Optionally, the second sub-circuit M21 includes, but is not limited to, a capacitor, a series or parallel circuit including a capacitor, an inductor, and a resistor, etc.

Optionally, referring to fig. 25, the second sub-radiator 12 further has a second matching point D located between the second coupling end 121 and the ground end 122.

The antenna assembly 100 further comprises a third matching circuit M3. One end of the third matching circuit M3 is electrically connected to the second matching point D. The other end of the third matching circuit M3 is grounded. The third matching circuit M3 includes a plurality of adjustable devices such as a selection branch formed by a switch, a capacitor, an inductor, a resistor and the like, and a variable capacitor and the like. The adjustable devices are used for adjusting the positions of three resonance modes, and the change of the mode positions can also improve the performance of a single frequency band and better meet the requirements of ENDC/CA combinations of different frequency bands.

By adding the third matching circuit M3, the third matching circuit M3 can adjust the resonant frequencies of the second resonant mode b and the third resonant mode c, for example, when the third matching circuit M3 is capacitive, the resonant frequencies of the second resonant mode b and the third resonant mode c can be moved toward the low frequency end; when the third matching circuit M3 is inductive, the resonant frequencies of the second resonant mode b and the third resonant mode c can be shifted toward the high frequency side. Through the adjustment, the second resonance mode b and the third resonance mode c can cover the actually required frequency band and generate resonance at the actually required frequency.

It is understood that when the second sub-radiator 12 is used as a sensing electrode, the first filter 30 is disposed between the second sub-radiator 12 and the third matching circuit M3, so that the second sub-radiator 12 is in a floating state with respect to a sensing signal.

Referring to fig. 26, the third matching circuit M3 includes a third sub-circuit M31. The third sub-circuit M31 is electrically connected to the second matching point D. The third sub-circuit M31 is capacitive when operating in the sixth frequency band. The sixth frequency band is located in a frequency band corresponding to the second resonance mode b and the third resonance mode c. For example, the sixth frequency band may be a continuous frequency band formed by the second resonance mode b and the third resonance mode c. When the third sub-circuit M31 operates in the sixth frequency band, it is capacitive, so that the resonant frequencies of the second resonant mode b and the third resonant mode c can move toward the low frequency end, and the third sub-circuit M31 is similar to "connecting an effective electrical length" to the second sub-radiator 12 between the second coupling end 121 and the ground end 122, so that the actual length of the second sub-radiator 12 between the second coupling end 121 and the ground end 122 can be relatively reduced without changing the frequency position where resonance is needed. In this way, miniaturization of the second sub-radiator 12 is achieved.

Optionally, the third sub-circuit M31 includes, but is not limited to, a capacitor, a series or parallel circuit including a capacitor, an inductor, and a resistor, etc.

It is understood that, in the actual design of the antenna element 100, one or two of the first matching circuit M1, the second matching circuit M2, and the third matching circuit M3 may be selected to be disposed at corresponding positions, or all of the first matching circuit M1, the second matching circuit M2, and the third matching circuit M3 may be disposed at corresponding positions, so that the stacking size of the radiator 10 may be further reduced.

In the above specific description of the structure of the antenna assembly 100 provided in the present application, a human body proximity sensing structure of the antenna assembly 100 is exemplified by the following specific embodiments.

Referring to fig. 3, the antenna assembly 100 further includes a second filter 50. One end of the second filter 50 is electrically connected to the radiator 10. The other end of the second filter 50 is electrically connected to the detection device 40. Specifically, the second filter 50 is electrically connected to the first sub-radiator 11 and/or the second sub-radiator 12. Optionally, when the first filter 30 is electrically connected to one sub-radiator 10, the second filter 50 and the first filter 30 are electrically connected to the same sub-radiator 10. When the first filter 30 electrically connects the first sub radiator 11 and the second sub radiator 12, the second filter 50 electrically connects the first sub radiator 11 and/or the second sub radiator 12. The second filter 50 is used to block the rf signal transmitted and received by the radiator 10 and to conduct the sensing signal, so that the rf signal transmitted and received by the radiator 10 does not affect the detection accuracy of the sensing signal detected by the detection device 40.

Of course, in other embodiments, the detecting device 40 itself has the function of passing the sensing signal and blocking the rf signal, or the detecting device 40 can only be affected by the sensing signal and is not affected by the rf signal, so that the second filter 50 is not needed, the number of devices is reduced, the circuit structure is simplified, and the space is saved.

Since the radiator 10 of the antenna assembly 100 has the functions of sensing and receiving and transmitting radio frequency signals when a human body approaches, in order to prevent the sensing signals and the radio frequency signals from interfering with each other, the first filter 30 and the second filter 50 are disposed in the antenna assembly 100, wherein the first filter 30 prevents the sensing signals from flowing through the rf front-end unit 20 and the ground GND, and the second filter 50 prevents the sensing signals from flowing to the detection device 40, so as to achieve detection of the sensing signals. In addition, the second filter 50 prevents the rf signal from flowing through the detection device 40, and the first filter 30 prevents the rf signal from flowing through the rf front-end unit 20 and the ground GND, thereby implementing the transmission and reception of the electromagnetic wave signal. The first filter 30 and the second filter 50 realize that the induction signal and the rf signal can act simultaneously and do not interfere with each other.

Specifically, referring to fig. 3, the first filter 30 includes a first sub-filter 31 and a second sub-filter 32. The first sub-filter 31 is electrically connected between the grounding point a and the ground GND. The second sub-filter 32 is electrically connected between the feeding point B and the rf front-end unit 20. Specifically, the first sub-filter 31 and the second sub-filter 32 are both capacitive devices. For example, the first sub-filter 31 and the second sub-filter 32 each include a capacitor. Further, the first sub-filter 31 and the second sub-filter 32 are both capacitors. The first sub-filter 31 and the second sub-filter 32 both have an isolation effect on the sensing signal. In other words, the first filter 30 makes the first sub radiator 11 in a "floating" state with respect to the sensing signal, so that the first sub radiator 11 can sense a change in the amount of charge brought by the human body when the human body approaches. The second filter 50 is electrically connected to the first sub radiator 11. The change of the charge amount forms an induced signal, the induced signal is transmitted to the detection device 40 through the second filter 50, and the detection device 40 determines whether a human body is close to the first sub radiator 11 of the antenna assembly 100 by detecting whether the induced signal is greater than or equal to a predetermined intensity value.

It should be noted that, in this application, for example, when the distance between the skin surface of the human body and the antenna assembly 100 is less than or equal to x, the human body approaches the antenna assembly 100. When the distance between the skin surface of the human body and the antenna assembly 100 is equal to x, the intensity value of the sensing signal detected by the detecting device 40 is N, and N is a preset intensity value. When the detecting device 40 detects that the intensity value of the sensing signal is greater than or equal to N, the detecting device 40 detects that the human body approaches the first sub-radiator 11 of the antenna assembly 100.

Referring to fig. 5, the first filter 30 includes a third sub-filter 33. The third sub-filter 33 is electrically connected between the ground terminal 122 of the second sub-radiator 12 and the ground GND. The third sub-filter 33 is a capacitive device, and the third sub-filter 33 is used for blocking the sensing signal and conducting the rf signal. In this way, the third sub-filter 33 makes the second sub-radiator 12 in a "floating" state with respect to the sensing signal, so the third sub-filter 33 makes the second sub-radiator 12 form a sensing electrode for detecting the sensing signal. In the present embodiment, the second filter 50 is electrically connected to the second sub radiator 12.

It is understood that the first and

second filters

30 and 50 provided herein are electrically connected to the radiator 10, including but not limited to the following embodiments.

Referring to fig. 3, in a first embodiment, a first sub-filter 31 is electrically connected to the ground point a and the ground GND, a second sub-filter 32 is electrically connected to the feeding point B and the rf front end unit 20, and a second filter 50 is electrically connected to the first sub-radiator 11, in this embodiment, the first sub-radiator 11 is solely used as a sensing electrode.

Referring to fig. 5, in the second embodiment, the third sub-filter 33 is electrically connected to the ground 122 and the ground GND, and the second filter 50 is electrically connected to the second sub-radiator 12, in this embodiment, the second sub-radiator 12 is used as a sensing electrode alone.

Referring to fig. 6, in the third embodiment, the first sub-filter 31 is electrically connected to the ground and the ground GND, the second sub-filter 32 is electrically connected to the feeding point B and the rf front-end unit 20, and the third sub-filter 33 is electrically connected to the ground 122 and the ground GND.

Referring to fig. 6, in a third embodiment, the second filter 50 has a plurality of connection manners, in a first case, the second filter 50 is electrically connected to the first sub-radiator 11, in this case, both the first sub-radiator 11 and the second sub-radiator 12 can be used as sensing electrodes, when a human body approaches the first sub-radiator 11, the charge on the first sub-radiator 11 changes, and the sensing device 40 can directly sense a sensing signal through the second filter 50; when the human body is close to when the second sub radiator 12, the charge on the second sub radiator 12 changes, the second sub radiator 12 is in through the coupling gap produce coupling induction signal on the first sub radiator 11, should detection device 40 is close in order to detect the human body through detecting coupling induction signal, can all under this condition irradiator 10 all is as the induction electrode to make induction area great, and utilizes antenna module 100's son coupling gap between irradiator 10 realizes induction signal's transmission, can improve irradiator 10's utilization ratio, two son irradiator 10 only needs one detection device 40 can save antenna module 100's device quantity and save space.

Referring to fig. 27, in a second case, a second filter 50 is electrically connected to the second sub radiator 12, which is similar to the first case and is not described herein again.

Referring to fig. 28, in the third case, the second filter 50 is electrically connected to the first sub radiator 11 and the second sub radiator 12. Specifically, the second filter 50 includes a fourth sub-filter 51 and a fifth sub-filter 52, one end of the fourth sub-filter 51 is electrically connected to the first sub-radiator 11, and one end of the fifth sub-filter 52 is electrically connected to the second sub-radiator 12.

Optionally, the other end of the fourth sub-filter 51 and the other end of the fifth sub-filter 52 are both electrically connected to the detection device 40. In other words, the same detecting device 40 detects the sensing signals detected by the first sub-radiator 11 and the second sub-radiator 12, so as to reduce the number of the detecting devices 40 and save space, and this embodiment is applicable to the case where the first sub-radiator 11 and the second sub-radiator 12 are both disposed on the same side, or the overlapping volume of the first sub-radiator 11 and the second sub-radiator 12 is small.

Still alternatively, referring to fig. 29, the detecting device 40 includes a first sub-detector 41 and a second sub-detector 42. The first sub-detector 41 is electrically connected to the other end of the fourth sub-filter 51, and the second sub-detector 42 is electrically connected to the other end of the fifth sub-filter 52. In other words, the sensing signals detected by the first sub radiator 11 and the second sub radiator 12 are detected by two sub-detectors independent of each other, and this embodiment may be used when the first sub radiator 11 and the second sub radiator 12 are respectively located on different sides of the electronic device 1000, and the radiator 10 of one antenna assembly 100 may detect the approach of a human body from different sides of the electronic device 1000, so as to improve the detection range while occupying a smaller space.

Specifically, the first sub-filter 31, the second sub-filter 32, and the third sub-filter 33 all include isolation capacitors, and the fourth sub-filter 51 and the fifth sub-filter 52 all include isolation inductors.

Alternatively, when the device electrically connected to the feeding point B by the first matching circuit M1 is a capacitor, the second sub-filter 32 may be a capacitor electrically connected to the feeding point B in the first matching circuit M1, so that it is not necessary to additionally provide a capacitor between the first matching circuit M1 and the feeding point B, thereby achieving the purposes of reducing the number of devices, simplifying the circuit structure and saving the occupied space.

The antenna assembly 100 also includes a controller (not shown). The controller is electrically connected to the detection device 40. The sensing device 40 receives the sensing signal and converts the sensing signal into an electrical signal to be transmitted to the controller. The controller is configured to detect a distance between the body to be detected and the radiator 10 according to the magnitude of the sensing signal, further determine whether the human body approaches the radiator 10, and adjust the power of the radio frequency front end unit 20 when the distance between the body to be detected and the radiator 10 is less than or equal to a preset distance value. Specifically, the controller may adjust the power of the rf front-end unit 20 (i.e., the power of the antenna assembly 100) according to different scenarios.

For example, when the head of a human body is close to the radiator 10 of the antenna assembly 100, the controller may reduce the power of the antenna assembly 100 to reduce the specific absorption rate of the electromagnetic waves radiated by the antenna assembly 100. When the human hand blocks the radiator 10 of the antenna assembly 100 in the radiation direction, and when other spare antenna assemblies 100 (i.e., the antenna assemblies 100 capable of covering the same frequency band) are further provided in the electronic device 1000, the controller may close the blocked antenna assemblies 100 and open the antenna assemblies 100 that are not blocked at other positions, so that when the human hand blocks the antenna assemblies 100, the communication quality of the electronic device 1000 may be ensured by intelligently switching the antenna assemblies 100; in the case that no other spare antenna assembly 100 is disposed in the electronic device 1000, the controller may control the power of the antenna assembly 100 to be increased to compensate for the problem of efficiency reduction caused by the hand shielding the radiator 10.

Certainly, the controller also controls other applications on the electronic device 1000 according to the detection result of the detection device 40, for example, the controller detects that a human body approaches and the electronic device 1000 is in a call state according to the detection result of the detection device 40, so as to control the screen brightness of the display screen 300 to be turned off, so as to save the electric energy of the electronic device 1000 during the call; the controller also controls the brightness of the display screen 300 to be turned on according to the detection result of the detection device 40 when the human body is far away and the electronic device 1000 is in a call state.

The specific location of the radiator 10 of the antenna assembly 100 on the electronic device 1000 is not specifically limited in the present application, for example, please refer to fig. 30 and 31, the radiator 10 of the antenna assembly 100 may be entirely disposed on one side of the electronic device 1000; alternatively, referring to fig. 32, the radiator 10 is disposed at a corner portion of the electronic device 1000. The following embodiments are specifically illustrated.

Referring to fig. 2 and 33, one side of the frame 210 is connected to the periphery of the rear cover 220. The other side of the frame 210 is connected to the periphery of the display screen 300. The bezel 210 includes a plurality of side bezels connected end to end. Among the side frames of the frame 210, two adjacent side frames intersect, for example, two adjacent side frames are perpendicular. The plurality of side frames includes a top frame 211 and a bottom frame 212 which are oppositely arranged, and a first side frame 213 and a second side frame 214 which are connected between the top frame 211 and the bottom frame 212.

Referring to fig. 30 and 33, the top frame 211 is a side facing away from the ground when the electronic device 1000 is held by an operator and facing the front of the electronic device 1000 for use, and the bottom frame 212 is a side facing the ground.

The joint between two adjacent side frames is a corner portion 216. Alternatively, the length of the corner portion 216 in the Y-axis direction may be 0 to 1cm, but is not limited thereto. The length of the corner portion 216 in the X-axis direction may be 0 to 1cm, but is not limited thereto.

Wherein top border 211 and bottom border 212 are parallel and equal. The first side frame 213 and the second side frame 214 are parallel and equal. The length of the first side frame 213 is greater than the length of the top frame 211.

Optionally, referring to fig. 33 and 34, at least a portion of the radiator 10 of the antenna assembly 100 is integrated with the bezel 210. For example, the frame 210 is made of metal. The first sub radiator 11, the second sub radiator 12 and the frame 210 are integrated into a whole. Of course, in other embodiments, the radiator 10 may be integrated with the rear cover 220. In other words, the first sub radiator 11 and the second sub radiator 12 are integrated as a part of the housing 200. Specifically, the ground GND, the signal source 21, the first to third matching circuits M3, and the like of the antenna assembly 100 are all disposed on a circuit board.

Optionally, when the radiator 10 of the antenna assembly 100 is used for human body proximity detection, and the radiator 10 and the frame 210 are integrated into a whole, a layer of insulating film may be disposed on the surface of the radiator 10, and since the surface of the human body skin has charges, a capacitance structure is formed between the surface of the human body skin and the radiator 10, and then the radiator 10 induces signal changes caused by the proximity of the surface of the human body skin.

Optionally, referring to fig. 33 and 35, the first sub-radiator 11 and the second sub-radiator 12 are formed on the surface of the frame 210. Specifically, the basic form of the first sub radiator 11 and the second sub radiator 12 includes, but is not limited to, a patch radiator, and the first sub radiator and the second sub radiator are formed on the inner surface of the frame 210 through Laser Direct Structuring (LDS), Direct printing Structuring (PDS), and other processes, in this embodiment, the frame 210 may be made of a non-conductive material. Of course, the radiator 10 may also be disposed on the rear cover 220.

Optionally, the first sub-radiator 11 and the second sub-radiator 12 are disposed on a flexible circuit board. The flexible circuit board is attached to the surface of the frame 210. The first sub radiator 11 and the second sub radiator 12 may be integrated on a flexible circuit board, and the flexible circuit board is attached to the inner surface of the middle frame 420 through glue or the like, in this embodiment, the material of the border 210 may be a non-conductive material. Of course, the radiator 10 may be disposed on the inner surface of the rear cover 220.

Referring to fig. 36, the number of the antenna elements 100 is at least one. Optionally, at least one of the antenna elements 100 includes a first antenna element 110 and a second antenna element 120. The first antenna element 110 and the second antenna element 120 may be the antenna elements 100 covering the same frequency band, or may be the antenna elements 100 covering different frequency bands. In this embodiment, the frequency bands covered by the first antenna assembly 110 and the second antenna assembly 120 are at least partially the same. For example, the first antenna element 110 and the second antenna element 120 can both cover the 2000MHz to 2500MHz frequency bands. The first antenna assembly 110 and the second antenna assembly 120 are respectively disposed at different positions of the electronic device 1000, so that the electronic device 1000 can be switched between the first antenna assembly 110 and the second antenna assembly 120 when supporting a 2000-2500 MHz frequency band.

Optionally, the first antenna element 110 and the second antenna element 120 are disposed at or near two diagonally disposed corner portions 216, respectively. It is understood that the first antenna element 110 is disposed at the corner portion 216, which means that at least a portion of the radiator 10 of the first antenna element 110 is integrated at the corner portion 216, or is printed, laser-formed on the surface of the corner portion 216, or attached to the surface of the corner portion 216. The proximity of the first antenna element 110 to the corner portion 216 means that the radiator 10 of the first antenna element 110 is disposed in the housing 200 (including the bezel 210 and the rear cover 220) or integrated on the housing 200 and has a small distance (e.g., a distance less than or equal to 1cm, but not limited to this size) from the corner portion 216. The second antenna element 120 is disposed at or near the corner 216 as described above, and will not be described herein.

Specifically, the first antenna assembly 110 is disposed on the top frame 211 and near a corner between the top frame 211 and the second side frame 214. The second antenna element 120 is disposed on the bottom frame 212 and near a corner between the bottom frame 212 and the first side frame 213. In the first aspect, the coupling slot 13 of the first antenna assembly 110 and the coupling slot 13 of the second antenna assembly 120 are respectively disposed on the top frame 211 and the bottom frame 212, without affecting the first side frame 213 and the second side frame 214, so as to reduce the fracture processing on the side frame with a larger size, improve the structural strength of the frame 210, and have a smaller impact on the appearance of the electronic device 1000; in a second aspect, the electronic device 1000 is in a vertical screen posture held by the left hand or the right hand of a user, the first antenna assembly 110 and the second antenna assembly 120 are respectively disposed on the top frame 211 and the bottom frame 212, and are matched with the common vertical screen posture of the electronic device 1000, so that the electronic device 1000 cannot be shielded by the hand in the left-hand holding posture or the right-hand holding posture, the radiation efficiency of the antenna assembly 100 is high, and the communication quality of the electronic device 1000 in use is good; in the third aspect, since the first antenna element 110 and the second antenna element 120 are respectively close to the two diagonally opposite corner portions 216, the first antenna element 110 and the second antenna element 120 can sense the approach of the human body from the top side (the side of the top frame 211), the bottom side (the side of the bottom frame 212), the left side (the side of the first side frame 213), and the right side (the side of the second side frame 214) of the electronic device 1000, and a relatively small number of the antenna elements 100 can be used to achieve the proximity sensing in a relatively large range.

In other embodiments, the first antenna element 110 and the second antenna element 120 are disposed on the first side frame 213 and the second side frame 214, respectively, and are disposed near the diagonally opposite corner portions 216, respectively.

Further, referring to fig. 37, at least one of the antenna elements 100 further includes a third antenna element 130 and a fourth antenna element 140. At least a portion of the first antenna assembly 110 is disposed on the top rim 211 and at least a portion of the second antenna assembly 120 is disposed on the bottom rim 212. The third antenna element 130 and the fourth antenna element 140 are disposed on or near the first side frame 213 and the second side frame 214, respectively. The first antenna element 110, the second antenna element 120, the third antenna element 130 and the fourth antenna element 140 are all capable of supporting a certain frequency band, such as 2000-2500 MHz, but not limited thereto. Further, the frequency bands supported by the first antenna element 110, the second antenna element 120, the third antenna element 130 and the fourth antenna element 140 are the same. In the four antenna elements 100, each of the antenna elements 100 is in a duplex mode and can transmit or receive signals independently, thereby realizing a 4 x 4MIMO operation mode for the medium-high and ultra-high frequency bands. Each of the antenna elements 100 is capable of supporting LTE-4G signals and NR-5G signals, i.e., dual connectivity for LTE-4G and NR-5G signals is achieved. Each antenna assembly 100 can support multiple resonance modes, and super bandwidth can be synthesized between frequency bands supported by the similar resonance modes in a carrier aggregation mode, so that throughput is improved, user experience is improved, adjustable devices are reduced, and cost is saved. In other words, the four antenna assemblies 100 are distributed around the whole electronic device 1000, so as to realize a multi-CA or ENDC combination of 4 × 4MIMO in the middle and high-ultra high frequency bands. The four antenna assemblies 100 are distributed on four side frames of the whole electronic device 1000, and can detect that human bodies on the back surface (the surface where the rear cover is located) and the front surface (the surface where the display screen is located) of the electronic device 1000 are close to each other, so that 360-degree dead-angle-free covering and accurate detection are achieved. In addition, the four antenna assemblies 100 are all integrated with a human body approach detection function, and the four antenna assemblies 100 can be intelligently switched, so that the electronic device 1000 can intelligently adjust the communication quality in different holding scenes.

Optionally, the first antenna assembly 110, the second antenna assembly 120, the third antenna assembly 130, and the fourth antenna assembly 140 may respectively detect the sensing signal through different detecting devices 40 to identify from which side the subject approaches the electronic device 1000.

Optionally, the first antenna assembly 110, the second antenna assembly 120, the third antenna assembly 130, and the fourth antenna assembly 140 all multiplex one detection device 40 to detect the sensing signal, so that the proximity of the subject to be detected to the electronic device 1000 can be detected, and meanwhile, the number of the detection devices 40 is also saved, and the space occupied in the electronic device 1000 is reduced.

The electronic device 1000 further comprises a main control unit (not shown). The controller may be part of a master control unit. Of course, the controller and the main control unit may be independent control units, but the main control unit may control the controller. The main control unit is electrically connected to the first antenna element 110, the second antenna element 120, the third antenna element 130 and the fourth antenna element 140. Further, the main control unit is also electrically connected to the detection device 40 of the first antenna assembly 110, the detection device 40 of the second antenna assembly 120, the detection device 40 of the third antenna assembly 130, and the detection device 40 of the fourth antenna assembly 140.

The main control unit is configured to determine a target mode of the electronic device 1000 according to a magnitude of an inductive signal received by at least one of the first antenna element 110, the second antenna element 120, the third antenna element 130, and the fourth antenna element 140, and adjust power of at least one of the first antenna element 110, the second antenna element 120, the third antenna element 130, and the fourth antenna element 140 according to the target mode. The target mode includes at least one of a one-handed holding mode, a two-handed holding mode, a carrying mode, and a head-approaching mode. The main control unit is configured to determine a target mode of the electronic device 1000 according to a magnitude of a sensing signal received by at least one of the first antenna element 110, the second antenna element 120, the third antenna element 130, and the fourth antenna element 140, where the target mode includes at least one of a one-hand holding mode, a two-hand holding mode, a carrying mode, and a head approaching mode. The method comprises the following specific steps:

when the main control unit detects that the sensing signal received by the third antenna element 130 is greater than or equal to the preset threshold, and the sensing signals received by the first antenna element 110, the second antenna element 120, and the fourth antenna element 140 are all smaller than the preset threshold, the main control unit may determine that a human body approaches the first side frame 213 of the electronic device 1000, and no or substantially no human body approaches the top frame 211, the bottom frame 212, and the second side frame 214, which indicates that the electronic device 1000 is in a left-handed holding state.

When the main control unit detects that the sensing signal received by the fourth antenna element 140 is greater than or equal to the preset threshold, and the sensing signals received by the first antenna element 110, the second antenna element 120, and the third antenna element 130 are all smaller than the preset threshold, the main control unit may determine that there is a human body approaching the second side frame 214 of the electronic device 1000, and none or substantially no human body approaching the top frame 211, the bottom frame 212, and the first side frame 213, which indicates that the electronic device 1000 is in a right-handed single-handed holding state at this time.

When the main control unit detects that the sensing signals received by the third antenna element 130 and the fourth antenna element 140 are both greater than or equal to the preset threshold, and the sensing signals received by the first antenna element 110 and the second antenna element 120 are both less than the preset threshold, the main control unit may determine that the electronic device 1000 is in a two-hand held vertical screen state at this time.

When the main control unit detects that the sensing signals received by the first antenna element 110 and the second antenna element 120 are both greater than or equal to the predetermined threshold, and the sensing signals received by the third antenna element 130 and the fourth antenna element 140 are both less than the predetermined threshold, the main control unit may determine that the electronic device 1000 is in a two-hand-held horizontal screen state at this time. Further, when the main control unit determines that the electronic device 1000 is in a two-hand-held horizontal-screen state, it may be determined that the requirement of the electronic device 1000 for the internet speed is increased, for example, when the electronic device 1000 is running a game or a video application, the power of the antenna assembly 100 may be increased, so as to increase the internet speed of the electronic device 1000, and thus, the internet experience of the user is good.

When the main control unit detects that the sensing signals received by at least three of the first antenna element 110, the second antenna element 120, the third antenna element 130, and the fourth antenna element 140 are all greater than or equal to the preset threshold, the main control unit determines that the side frames of at least three sides of the electronic device 1000 are close to the human body, and the main control unit can determine that the electronic device 1000 is in the carrying state at this time. Since the carrying state requires relatively less internet speed, the main control unit may reduce the power of the antenna assembly 100 appropriately.

In this embodiment, the electronic device 1000 further includes a functional device (not shown). The functional device includes but is not limited to at least one of a receiver and a display screen. The main control unit is electrically connected with the functional device. The main control unit is configured to determine the operating state of the electronic device 1000 according to the magnitude of the sensing signal received by the first antenna assembly 110, the second antenna assembly 120, the third antenna assembly 130, and the fourth antenna assembly 140 and the operating state of the functional device.

Optionally, when the main control unit detects that the sensing signals received by at least one of the first antenna element 110, the second antenna element 120, the third antenna element 130, and the fourth antenna element 140 are all greater than or equal to the preset threshold value, and the receiver is in the working state, it indicates that the electronic device 1000 is in a state close to the head of the subject to be tested, that is, the head of the human body is close to the electronic device 1000 and a call is made, at this time, the main control unit may control the power of the antenna elements 100 to be all reduced, so as to reduce the specific absorption rate of the head of the human body to the electromagnetic waves.

Optionally, when the main control unit detects that the sensing signals received by at least three of the first antenna element 110, the second antenna element 120, the third antenna element 130, and the fourth antenna element 140 are all greater than or equal to a preset threshold and the display screen 300 is in an undisplayed state, it indicates that the electronic device 1000 may be in a carrying state, where the carrying state includes but is not limited to a pocket of a subject to be tested; the portable bag is accommodated in a schoolbag, a waist bag, a mobile phone bag and the like which are close to the main body to be detected; the electronic device 1000 may also be worn on the body to be tested via a rope, a wrist band, or the like. In this embodiment, whether the receiver is in a working state can be further detected, and if the receiver is in a non-working state, it can be directly determined that the electronic device 1000 is in a state of being accommodated in a pocket of the subject to be tested. At this time, the main control unit may control the power of the antenna assembly 100 to be reduced, so as to reduce the electromagnetic radiation of the electronic device 1000 to the human body and reduce the specific absorption rate of the human body to the electromagnetic waves.

If the receiver is in the working state, it indicates that the electronic device 1000 may be in a state of being accommodated in a pocket of a subject to be tested or in a state of making a call, at this time, the main control unit may control the power of the antenna assembly 100 to be reduced, so as to reduce the electromagnetic radiation of the electronic device 1000 to the human body and reduce the specific absorption rate of the head of the human body to the electromagnetic wave.

The above is that the main control unit intelligently determines the scene where the electronic device 1000 is located according to the sensing signal received by at least one of the first antenna assembly 110, the second antenna assembly 120, the third antenna assembly 130, and the fourth antenna assembly 140, and by combining with the operating state of the functional device, the posture and the application program of the electronic device 1000 at this time may be determined more accurately by combining with the operating state of the application program, so as to intelligently determine the requirement of the electronic device 1000 for the internet access speed, and further, the main control unit intelligently matches the requirement of the electronic device 1000 for the internet access speed by adjusting the power of the first antenna assembly 110, the second antenna assembly 120, the third antenna assembly 130, and the fourth antenna assembly 140, so that the electronic device 1000 has better communication quality in various scenes.

Optionally, in a case that the first antenna element 110, the second antenna element 120, the third antenna element 130, and the fourth antenna element 140 can support the same band, after the main control unit determines that the electronic device 1000 is held by a single hand, the main control unit closes the blocked third antenna element 130, and opens at least one of the first antenna element 110, the second antenna element 120, and the fourth antenna element 140 that is not blocked. After the main control unit determines that the electronic device 1000 is held by one hand, the main control unit turns off the shielded fourth antenna element 140 and turns on at least one of the first antenna element 110, the second antenna element 120, and the third antenna element 130 which are not shielded. After the main control unit determines that the electronic device 1000 is held by two vertical screens, the main control unit closes the shielded third antenna element 130 and the shielded fourth antenna element 140, and opens at least one of the first antenna element 110 and the second antenna element 120 that is not shielded. After the main control unit determines that the electronic device 1000 is held by the two hands holding the cross screen, the main control unit turns off the first antenna assembly 110 and the second antenna assembly 120 that are shielded, and turns on at least one of the third antenna assembly 130 and the fourth antenna assembly 140 that are not shielded. Through the intelligent detection of the holding state of the electronic device 1000 and the intelligent switching according to the holding state of the electronic device 1000, the intelligent switching of the electronic device 1000 under various different shielding scenes is realized, and the electronic device 1000 can support required frequency bands under various different shielding scenes, so that the communication quality of the electronic device 1000 is ensured.

Optionally, when the second antenna element 120, the third antenna element 130, and the fourth antenna element 140 cannot support the frequency band supported by the first antenna element 110, after the main control unit determines that the electronic device 1000 is held by a single hand, the main control unit controls the power of the blocked third antenna element 130 to increase to compensate for the loss when the third antenna element 130 is blocked, and when the main control unit determines that the blocking object of the third antenna element 130 of the electronic device 1000 is removed, the main control unit controls the power of the blocked third antenna element 130 to be adjusted to the initial state. Similarly, the main control unit may also control the power of the shielded antenna assembly 100 to be increased when held in one hand, two hands vertical screen, or two hands horizontal screen. Through the above intelligent detection of the holding state of the electronic device 1000 and the dynamic adjustment of the power of the antenna assembly 100 according to the holding state of the electronic device 1000, the communication quality of the electronic device 1000 is ensured.

In another embodiment, the main control unit may further determine the state of the electronic device 1000 by a sensor such as a gyro sensor in the electronic device 1000, and further adjust the power of each antenna assembly 100 according to the state of the electronic device 1000, for example, determine that the electronic device 1000 is in a lifted state by a sensor such as a gyro sensor, and then increase the power of each antenna assembly 100; the electronic device 1000 may also be determined to be in a dropped or placed state by a sensor such as a gyroscope sensor, and at this time, the power of each antenna assembly 100 may be reduced, so as to save energy and achieve intelligent adjustment of the antenna assembly 100.

According to the antenna assembly 100 provided by the application, by designing the structure of the radiator 10 and the position of the grounding point A, a plurality of resonance modes are excited, and the resonance modes can realize ultra-wideband coverage, so that the multi-band ENDC/CA performance is realized, the download bandwidth is improved, the download speed of throughput can be improved, and the user experience is improved; the multiple modes generated by the antenna assembly 100 can be mutually enhanced, so that ultra-wide bandwidth can be efficiently covered, cost is saved, and various large operator indexes can be favorably met, the radiator 10 in the antenna assembly 100 also serves as an induction electrode for human body approach detection, so that the antenna assembly 100 also has the function of detecting human body approach while supporting ultra-wide bandwidth, the power of the antenna assembly 100 is reduced when the head of a human body approaches, the specific absorption rate of the head of the human body to electromagnetic wave signals radiated by the antenna assembly 100 is reduced, and the antenna assembly 100 is high in integration level, multiple in function and small in occupied space; by arranging a plurality of antenna assemblies 100 in the electronic device 1000 and laying out the plurality of antenna assemblies 100, so that the plurality of antenna assemblies 100 detect the approach of a human body at different positions, the main control unit determines a target mode of the electronic device 1000 according to detection results of the plurality of antenna assemblies 100, for example, a left-hand holding mode, a right-hand holding mode, a two-hand cross-screen holding mode, a two-hand vertical-screen holding mode, a carrying mode, a head approach mode, and the like, thereby realizing intelligent detection of the target mode of the electronic device 1000; the main control unit can also intelligently switch the power of the antenna assembly 100 according to the target mode of the electronic device 1000, so as to ensure that the electronic device 1000 can keep a better antenna transmission rate in different shielding states and intelligently reduce the specific absorption rate of the electronic device 1000 for electromagnetic wave signals.

While the foregoing is directed to embodiments of the present application, it will be appreciated by those skilled in the art that various modifications may be made without departing from the scope of the present application, and that such modifications and adaptations are intended to be within the scope of the present application.

Claims

1. An antenna assembly, comprising:

the radiator comprises a first sub radiator and a second sub radiator, the first sub radiator and the second sub radiator have a coupling gap, and the first sub radiator and the second sub radiator are coupled through the coupling gap; the first sub-radiator comprises a free end, a first coupling end, a grounding point and a feeding point, wherein the grounding point and the feeding point are arranged between the free end and the first coupling end, the grounding point is used for electrically connecting a grounding electrode, and the feeding point is positioned between the grounding point and the first coupling end; the second sub-radiator comprises a second coupling end and a grounding end, the first coupling end and the second coupling end are arranged at intervals through the coupling gap, and the grounding end is used for electrically connecting the ground pole;

2. The antenna assembly of claim 1, further comprising a second filter, wherein one end of the second filter is electrically connected to the radiator, and the other end of the second filter is electrically connected to the detection device, and the second filter is configured to block the rf signals transmitted and received by the radiator and to conduct the sensing signals.

3. The antenna assembly of claim 2, wherein the first filter comprises a first sub-filter and a second sub-filter, the first sub-filter being electrically connected between the ground point and the ground, the second sub-filter being electrically connected between the feed point and the radio frequency front end unit.

4. The antenna assembly of claim 3, wherein the second sub-filter is further configured to form a matching circuit with the first matching circuit of the RF front-end unit connected between the feed point and a signal source.

5. The antenna assembly of claim 3, wherein the first filter comprises a third sub-filter electrically connected between the ground terminal and the ground.

6. The antenna assembly of claim 5, wherein an end of the second filter is electrically connected to the first sub radiator and/or the second sub radiator.

7. The antenna assembly of claim 6, wherein the second filter includes a fourth sub-filter and a fifth sub-filter, one end of the fourth sub-filter being electrically connected to the first sub-radiator, one end of the fifth sub-filter being electrically connected to the second sub-radiator;

the other end of the fourth sub-filter and the other end of the fifth sub-filter are both electrically connected with the detection device; or, the detection device includes a first sub-detector and a second sub-detector, the first sub-detector is electrically connected to the other end of the fourth sub-filter, and the second sub-detector is electrically connected to the other end of the fifth sub-filter.

8. The antenna assembly of claim 7, wherein the first sub-filter, the second sub-filter, and the third sub-filter each comprise an isolation capacitor, and wherein the fourth sub-filter and the fifth sub-filter each comprise an isolation inductor.

9. The antenna assembly of claim 1, wherein a radiator length between the ground point and the free end is (1/8) - (3/4) times the first sub-radiator length.

10. The antenna assembly of any one of claims 1-9, wherein the first sub-radiator is configured to generate a first resonant mode when the rf front-end unit is excited, the first sub-radiator and the second sub-radiator are configured to generate a second resonant mode when the rf front-end unit is excited, and the first sub-radiator and the second sub-radiator connected between the ground point and the first coupling end are configured to generate a third resonant mode when the rf front-end unit is excited.

11. An antenna assembly according to claim 10, wherein the resonant frequency of the first resonant mode, the resonant frequency of the second resonant mode, and the resonant frequency of the third resonant mode increase in sequence,

the first resonance mode supports a first frequency band, the second resonance mode supports a second frequency band, the third resonance mode supports a third frequency band, the first frequency band, the second frequency band and the third frequency band are aggregated to form a target application frequency band, and the target application frequency band covers 1.6 GHz-3 GHz; and/or the target application frequency band supports an LTE 4G frequency band and an NR 5G frequency band.

12. The antenna assembly of claim 10, wherein the first resonant mode corresponds to current flowing from the first coupled end and the free end to the ground point; the current corresponding to the second resonance mode flows from the grounding end to the grounding end and flows to the free end; the current corresponding to the third resonant mode flows from the first coupling end to the grounding point and flows from the second coupling end to the grounding end.

13. The antenna assembly of claim 10, wherein the second resonant mode includes a first sub-resonant mode and a second sub-resonant mode, the first sub-resonant mode being generated by excitation of the radio frequency front end unit by the first sub-radiator, and the second sub-resonant mode being generated by capacitive coupling of the first sub-radiator by the second sub-radiator.

14. The antenna assembly of claim 10,

the wavelength corresponding to the resonant frequency of the first resonant mode is a first wavelength, and the length of a radiator between the ground point and the free end is (1/8) - (3/8) times of the first wavelength; and/or the presence of a gas in the gas,

a radiator length between the free end and the first coupled end is (1/4) - (3/4) times the first wavelength; and/or the presence of a gas in the gas,

a wavelength corresponding to a resonance frequency of the third resonance mode is a second wavelength, and a length of a radiator between the second coupling end and the ground end is (1/8) to (3/8) times the second wavelength.

15. The antenna assembly of claim 10, wherein the rf front-end circuit comprises a first matching circuit and a signal source, one end of the first matching circuit being electrically connected to the feed point, the other end of the first matching circuit being electrically connected to the signal source; the first matching circuit comprises a first sub-circuit, one end of the first sub-circuit is electrically connected with the feeding point, the other end of the first sub-circuit is electrically connected with the ground, the first sub-circuit is capacitive when working at a fourth frequency band, and the fourth frequency band is located in a frequency band corresponding to the first resonance mode, the second resonance mode and the third resonance mode.

16. The antenna assembly of claim 10, wherein the first sub-radiator further has a first matching point located between the free end and the ground point; the antenna assembly further includes a second matching circuit electrically connected between the first matching point and the ground; the second matching circuit comprises a second sub-circuit, the second sub-circuit is electrically connected with the first matching point, the second sub-circuit is capacitive when working at a fifth frequency band, and the fifth frequency band is positioned in the frequency band corresponding to the first resonance mode and the second resonance mode.

17. The antenna assembly of claim 10, wherein the second sub-radiator further has a second matching point between the second coupling end and the ground end; the antenna assembly further includes a third matching circuit electrically connected between the second matching point and the ground, the third matching circuit including a third sub-circuit electrically connected to the second matching point, the third sub-circuit being capacitive when operating in a sixth frequency band, the sixth frequency band being located in a frequency band corresponding to the second resonance mode and the third resonance mode.

18. The antenna assembly according to any one of claims 1 to 9 and 11 to 17, further comprising a controller electrically connected to the detection device, wherein the controller is configured to detect a distance between the body to be measured and the radiator according to a magnitude of the sensing signal, and adjust the power of the rf front end unit when the distance between the body to be measured and the radiator is less than or equal to a preset distance value.

19. An electronic device comprising a housing and at least one antenna assembly according to any one of claims 1 to 18, the antenna assembly being disposed within or integrated with the housing.

20. The electronic device of claim 19, wherein the housing comprises a plurality of side frames connected end to end in sequence, and a joint between two adjacent side frames is a corner portion;

at least one antenna component comprises a first antenna component and a second antenna component, and the first antenna component and the second antenna component are respectively arranged at or close to two corner parts which are diagonally arranged.

21. The electronic device of claim 20, wherein at least one of the antenna elements further comprises a third antenna element and a fourth antenna element, at least a portion of the first antenna element, at least a portion of the second antenna element, at least a portion of the third antenna element, and at least a portion of the fourth antenna element being disposed on different ones of the side frames;

the electronic device further comprises a main control unit, the main control unit is electrically connected with the first antenna assembly, the second antenna assembly, the third antenna assembly and the fourth antenna assembly, and the main control unit is configured to determine a target mode in which the electronic device is located according to a magnitude of an inductive signal received by at least one of the first antenna assembly, the second antenna assembly, the third antenna assembly and the fourth antenna assembly, and adjust a power of at least one of the first antenna assembly, the second antenna assembly, the third antenna assembly and the fourth antenna assembly according to the target mode, where the target mode includes at least one of a one-hand holding mode, a two-hand holding mode, a carrying mode and a head approaching mode.