CN118137113A

CN118137113A - Electronic equipment

Info

Publication number: CN118137113A
Application number: CN202311797891.3A
Authority: CN
Inventors: 钟永卫
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2023-12-25
Filing date: 2023-12-25
Publication date: 2024-06-04

Abstract

The first antenna unit is arranged on the top edge, the first antenna unit comprises a first radiator and a second radiator, the first radiator comprises a first free end, a first grounding point, a first feed point and a second free end, the second radiator comprises a third free end and a second grounding point, the first grounding point and the second grounding point are grounded, and a first coupling gap is formed between the second free end and the third free end; the second antenna unit is arranged on the first side edge and comprises a third radiator, the third radiator comprises a third grounding point, a second feed point and a fourth free end, and the third grounding point is grounded; the first signal source is used for providing a first excitation signal of a satellite communication frequency band; the switch switching circuit is electrically connected between the first feeding point, the second feeding point and the signal source, and is configured to switch at least one of the first feeding point and the second feeding point to be electrically connected with the first signal source, so that satellite communication stability of the electronic equipment is improved.

Description

Electronic equipment

Technical Field

The application relates to the technical field of communication, in particular to electronic equipment.

Background

When a hand-held electronic device is close to the head to make a call, the head is close to an antenna arranged at the top edge of the electronic device, which is equivalent to the medium loading on the antenna at the top edge, so that the antenna is subjected to frequency offset, the performance of the antenna at the top edge is reduced, and even communication cannot be performed. Taking the top antenna as a satellite communication antenna for example, when the top antenna is attached to a human body, the performance is drastically reduced, and satellite communication cannot be performed. Therefore, how to improve the satellite communication stability of the electronic device is a technical problem to be solved.

Disclosure of Invention

The application provides an electronic device capable of improving satellite communication stability of the electronic device.

The application provides an electronic device, comprising:

The frame comprises a top edge and a first side edge which are connected;

an antenna assembly, the antenna assembly comprising:

The antenna comprises a first antenna unit, wherein the first antenna unit comprises a first radiator and a second radiator, the first radiator is arranged on the top edge, at least part of the second radiator is arranged on the top edge, the first radiator comprises a first free end, a first grounding point, a first feed point and a second free end, the second radiator comprises a third free end and a second grounding point, the first grounding point and the second grounding point are grounded, and a first coupling gap is formed between the second free end and the third free end;

The second antenna unit is arranged on the first side edge and comprises a third radiator, the third radiator comprises a third grounding point, a second feed point and a fourth free end, and the third grounding point is grounded;

The first signal source is used for providing a first excitation signal of a satellite communication frequency band; and

And the switch switching circuit is electrically connected among the first feeding point, the second feeding point and the first signal source, and is configured to be electrically connected with the first signal source through at least one of the first feeding point and the second feeding point.

The electronic device provided by the embodiment of the application comprises a first radiator and a second radiator, wherein the first radiator is arranged on the top edge, at least part of the second radiator is arranged on the top edge, the first radiator comprises a first free end, a first grounding point, a first feed point and a second free end, the second radiator comprises a third free end and a second grounding point, the first grounding point and the second grounding point are grounded, and a first coupling gap is formed between the second free end and the third free end; the second antenna unit is arranged on the first side edge and comprises a third radiator, the third radiator comprises a third grounding point, a second feed point and a fourth free end, and the third grounding point is grounded; the first signal source is used for providing a first excitation signal of a satellite communication frequency band; the switch switching circuit is electrically connected between the first feeding point, the second feeding point and the signal source, and is configured to switch at least one of the first feeding point and the second feeding point to be electrically connected with the first signal source, so that the working antenna for switching the satellite communication frequency band is performed when the signal intensity of the satellite communication frequency band is poor, and the satellite communication stability of the electronic equipment is improved.

Drawings

In order to more clearly illustrate the technical solution of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described.

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

FIG. 2 is a partially exploded schematic illustration of an electronic device provided in an embodiment of the application;

FIG. 3 is a partial back view of an electronic device provided by an embodiment of the present application;

Fig. 4 is a schematic structural diagram of a first antenna unit and a second antenna unit in an antenna assembly according to an embodiment of the present application;

FIG. 5 is a schematic structural diagram and a current distribution diagram of a 3/2 wavelength symmetric dipole structure formed by the first radiator with IFA branches and a reference floor according to an embodiment of the present application;

Fig. 6 is a far field radiation pattern of the antenna structure of fig. 5;

fig. 7a is a schematic diagram of current distribution on an antenna assembly and a reference floor according to an embodiment of the present application;

fig. 7b is a schematic diagram of a t+l antenna formed by a first radiator and a second radiator in an antenna assembly according to an embodiment of the present application;

fig. 8 is a schematic structural diagram of a first antenna unit according to an embodiment of the present application further including a first switch circuit;

Fig. 9 is a schematic structural diagram of a first antenna unit further including a first matching circuit and a second antenna unit further including a second matching circuit according to an embodiment of the present application;

Fig. 10 is a schematic structural diagram of a third radiator and a second grounding point of a second radiator according to an embodiment of the present application;

Fig. 11 is a schematic structural diagram of a third radiator and a second grounding point of a second radiator provided in an embodiment of the present application;

fig. 12 is a schematic structural diagram of a second antenna unit according to an embodiment of the present application further including a fourth radiator and a second switching circuit;

fig. 13 is a schematic structural diagram of an antenna assembly according to an embodiment of the present application further including a third antenna unit;

fig. 14 is a schematic structural diagram of an antenna assembly according to an embodiment of the present application further including a combiner;

fig. 15 is a schematic structural diagram of a notch structure of an antenna assembly provided in an embodiment of the present application disposed on a first side;

fig. 16 is a schematic structural diagram of the notch structure of the antenna assembly provided in the embodiment of the present application disposed on the second side;

fig. 17 is a schematic structural view of a trap branch of a trap structure formed by a third radiator according to an embodiment of the present application;

FIG. 18 is a schematic diagram of a notch structure including a notch branch and an impedance tuning circuit according to an embodiment of the present application;

FIG. 19 is a schematic diagram of a notch structure including a notch branch, a first sub-switch and an impedance tuning circuit according to an embodiment of the present application;

FIG. 20 is a schematic view of a notch structure according to an embodiment of the present application as a part of a fourth radiator;

Fig. 21 is a schematic structural view of an antenna assembly according to an embodiment of the present application, wherein a first notch structure is disposed on a first side and a second notch structure is disposed on a second side;

fig. 22 is a far-field radiation pattern of an antenna assembly provided with a notch structure according to an embodiment of the present application.

Reference numerals illustrate:

An electronic device 1000; an antenna assembly 100; a display screen 200; a middle frame 300; a rear cover 400; a reference floor 500; a middle plate 310; a frame 320; a top edge 321; a bottom edge 322; a first side 323; a second side 324; a first antenna element 10; a second antenna unit 20; a first signal source 51; a switch switching circuit 60; a first radiator 11; a second radiator 12; a first free end A1; a first ground point B1; a first feeding point C1; a second free end A2; a third free end A3; a second ground point B2; a first coupling slit N1; a third radiator 13; a third ground point B3; a second feeding point C2; a fourth free end A4; a first floor area 510; a second floor area 520; a third floor area 530; a first connection point E1; a first switching circuit K1; a first switch M11; a first impedance tuning branch M12; a second matching circuit M2; a second switch M21; a second impedance tuning branch M22; a fourth radiator 14; a second switching circuit K2; a fifth free end A5; a second connection point E2; a fourth ground point B4; a second coupling slit N2; a second signal source 52; a third feeding point C3; a third antenna element 30; a fifth radiator 15; a combiner 70; a transmission path 71; a receiving passageway 72; a merge path 73; a notch structure 80; a fifth ground point B5; trap knots 81; a first sub-switch 83; an impedance tuning circuit 82.

Detailed Description

The technical scheme of the present application will be clearly and completely described below with reference to the accompanying drawings. It should be apparent that the described embodiments of the application are only some embodiments, but not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive effort, based on the embodiments provided by the present application are within the scope of protection of the present application.

Reference in the specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the 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. Those skilled in the art will appreciate explicitly and implicitly that the described embodiments of the application may be combined with other embodiments.

The terms first, second and the like in the description and in the claims and in the above-described figures are used for distinguishing between different objects and not necessarily for describing a sequential or chronological order. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example: an assembly or device incorporating one or more components is not limited to the listed one or more components, but may alternatively include one or more components not listed but inherent to the illustrated product, or one or more components that may be provided based on the illustrated functionality.

Referring to fig. 1, fig. 1 is a schematic structural diagram of an electronic device 1000 according to an embodiment of the application. The electronic device 1000 includes, but is not limited to, a device having a communication function such as a mobile phone, tablet computer, notebook computer, wearable device, unmanned aerial vehicle, robot, digital camera, etc. The embodiment of the application is illustrated by taking a mobile phone as an example, and other electronic devices can refer to the embodiment.

Referring to fig. 2, fig. 2 is a partially exploded schematic illustration of an electronic device 1000. The electronic device 1000 includes an antenna assembly 100, and the operating environment of the antenna assembly 100 is illustrated by taking the electronic device 1000 as a mobile phone. The electronic apparatus 1000 includes a display screen 200, a center 300, and a rear cover 400, which are sequentially disposed in the thickness direction. The middle frame 300 includes a middle plate 310 and a frame 320 surrounding the middle plate 310. Bezel 320 may be a conductive bezel. Of course, in other embodiments, the electronic device 1000 may not have the midplane 310. The display screen 200, the middle plate 310 and the rear cover 400 are sequentially stacked, and an accommodating space is formed between the display screen 200 and the middle plate 310 and between the middle plate 310 and the rear cover 400 to accommodate devices such as the main board 600, the camera module, the receiver module, the battery, various sensors and the like. One side of the frame 320 is surrounded on the edge of the display screen 200, and the other side of the frame 320 is surrounded on the edge of the rear cover 400, so as to form a complete appearance structure of the electronic device 1000. In the embodiment, the frame 320 and the middle plate 310 are integrally formed, and the frame 320 and the rear cover 400 may be separate structures, which is the working environment of the antenna assembly 100 for example, but the antenna assembly 100 of the present application is not limited to the working environment.

Referring to fig. 3, fig. 3 is a back view of the electronic device 1000. The frame 320 includes a top side 321, a bottom side 322, and a first side 323 and a second side 324 connected to the top side 321 and the bottom side 322. Top edge 321 is connected to first side edge 323. Wherein the top edge 321 is the side far away from the ground when the user holds the electronic device 1000 with the vertical screen, and the bottom edge 322 is the side facing the ground when the user holds the electronic device 1000 with the vertical screen. The first side 323 is the left side of the electronic device 1000 when the user holds the electronic device and erects the screen. The second side 324 is the right side of the electronic device 1000 when held by a user and when the display is in use. Of course, the first side 323 may also be the right side of the electronic device 1000 when the user holds the electronic device. The second side 324 is the left side of the electronic device 1000 when held by a user.

Referring to fig. 3 and 4, the electronic device 1000 further includes a reference floor 500. The reference floor 500 is provided within the bezel 320. The reference floor 500 is generally rectangular in shape. Because devices are arranged in the mobile phone or other structures are avoided as required, various grooves, holes and the like are formed on the reference ground edge of the reference floor 500. The reference floor 500 includes, but is not limited to, a metal alloy portion that is the midplane 310 and a reference ground metal portion of a circuit board (including motherboard and sub-boards). In general, the reference ground system in the electronic device 1000 may be equivalently a generally rectangular shape, and is therefore referred to as the reference floor 500. The reference floor 500 does not indicate that the shape of the reference ground is plate-shaped and is a rectangular plate.

The specific structure of the antenna assembly 100 is illustrated in the following description with reference to the accompanying drawings.

Referring to fig. 4, the antenna assembly 100 includes a first antenna unit 10, a second antenna unit 20, a first signal source 51 and a switch switching circuit 60.

Referring to fig. 4, the first antenna unit 10 includes a first radiator 11 and a second radiator 12. The first radiator 11 is disposed on the top side 321, and at least a portion of the second radiator 12 is disposed on the top side 321. Specifically, a part of the second radiator 12 may be disposed on the top edge 321, and the other part may be disposed on the first side edge 323; or the second radiator 12 may be entirely disposed on the top edge 321.

The material of the first radiator 11 is not particularly limited in the present application. Optionally, the material of the first radiator 11 is a conductive material, including but not limited to a conductive material such as a metal, an alloy, and the like. The shape of the first radiator 11 is not particularly limited in the present application. For example, the shape of the first radiator 11 includes, but is not limited to, a bar shape, a sheet shape, a rod shape, a coating shape, a film shape, and the like. The first radiator 11 shown in fig. 3 is only an example and does not limit the shape of the first radiator 11 provided by the present application. In this embodiment, the first radiators 11 are all in a strip shape. The present application is not limited to the extending trace of the first radiator 11. Alternatively, the first radiator 11 may extend in a straight line, or in a curved line, or in a bending line. In other embodiments, the first radiator 11 may also extend along a trajectory such as a bending line. The first radiator 11 may be a line with a uniform width on the extending track, or may be a bar with a gradual width change and a widening area, etc.

The form of the first radiator 11 is not particularly limited in the present application. Optionally, the first radiator 11 includes, but is not limited to, a metal frame 320, a metal frame embedded in the plastic frame 320, a metal radiator located in or on the frame 320, a flexible circuit board antenna formed on a flexible circuit board (Flexible Printed Circuit board, FPC), a laser direct Structuring antenna formed by Laser Direct Structuring (LDS), a printed direct Structuring antenna formed by Printing Direct Structuring (PDS) PRINT DIRECT, a conductive patch antenna (e.g., a metal bracket antenna), and the like. In this embodiment, the first radiator 11 is taken as a part of the metal frame 320 of the electronic device 1000 as an example.

The material, shape, form, etc. of the second radiator 12 can be referred to as the material, shape, form, etc. of the first radiator 11.

Referring to fig. 4, the first radiator 11 includes a first free end A1, a first grounding point B1, a first feeding point C1 and a second free end A2. Optionally, the first radiator 11 is a T-shaped antenna or a similar T-shaped antenna. The first grounding point B1 is located at or near the midpoint of the first radiator 11. The first feeding point C1 is located between the first ground point B1 and the second free end A2. The first grounding point B1 is grounded. For example, the first grounding point B1 is grounded back through a grounding spring. For another example, the first grounding point B1 of the first radiator 11 is interconnected with an intermediate electrical connection electrically connected to the reference floor 500, i.e. by means of a physical ground return.

In the present application, the grounding point refers to a position where the first radiator 11 is electrically connected to the reference floor 500, and the free end refers to an end not electrically connected to the reference floor, and in general, the free end is disconnected from other conductive parts on the frame 320 by an insulation break, and is not electrically connected to the reference floor 500. In order to ensure structural strength of the frame 320 of the electronic device 1000, the insulating material is filled in the insulating break.

Referring to fig. 4, the second radiator 12 includes a third free end A3 and a second grounding point B2. The second grounding point B2 is grounded. A first coupling gap N1 is between the second free end A2 and the third free end A3.

Optionally, the first coupling slit N1 is an insulation break slit, and the width of the first coupling slit N1 is 0.5-2 mm, but is not limited to this size. The first radiator 11 and the second radiator 12 can be capacitively coupled through a first coupling gap N1. In one of the angles, the first radiator 11 and the second radiator 12 may be regarded as two portions of the bezel 320 partitioned by the first coupling slit N1.

The first radiator 11 and the second radiator 12 are capacitively coupled through a first coupling gap N1. The "capacitive coupling" means that an electric field is generated in the first coupling gap N1 between the first radiator 11 and the second radiator 12, the signal of the first radiator 11 can be transmitted to the second radiator 12 through the electric field, and the signal of the second radiator 12 can be transmitted to the first radiator 11 through the electric field, so that the first radiator 11 and the second radiator 12 can be electrically connected even in a state of not being directly electrically connected.

The second antenna unit 20 is disposed on the first side 323. In this embodiment, the first side 323 is taken as an example, and in other embodiments, the second antenna unit 20 may be further disposed on the second side 324.

Referring to fig. 4, the second antenna unit 20 includes a third radiator 13. The third radiator 13 includes a third grounding point B3, a second feeding point C2, and a fourth free end A4, which are sequentially disposed. The third grounding point B3 is grounded.

The first signal source 51 is configured to provide a first excitation signal in a satellite communication band. For example, the satellite communication band is 1980 to 2200MHz. Transmitting frequency band of satellite communication frequency band: 1980-2010 MHz, the reception frequency band of the satellite communication frequency band: 2017-2200 MHz.

The first signal source 51 includes, but is not limited to, a radio frequency transceiver chip, etc. The first signal source 51 is configured to provide a radio frequency excitation current, and after the radio frequency excitation current is transmitted to the first radiator 11, the first radiator 11 can be excited to generate a resonant current, so as to form a resonant mode, so as to support a frequency band corresponding to the resonant current.

In the embodiment of the application, the first signal source 51 is disposed on the motherboard 600. The electrical connection between the first signal source 51 and the first feeding point C1 includes, but is not limited to, indirect connection via a coaxial line, a microstrip line, a conductive spring, etc. Specifically, the first signal source 51 is electrically connected to the first feeding point C1 through a feeding spring (conductive spring) disposed on the motherboard 600.

Referring to fig. 4, the switch switching circuit 60 is electrically connected between the first feeding point C1, the second feeding point C2 and the first signal source 51.

The switch switching circuit 60 is configured to switch at least one of the first feeding point C1 and the second feeding point C2 to be electrically connected to the first signal source 51.

Optionally, the switch switching circuit 60 switches the first feeding point C1 to be electrically connected to the first signal source 51 alone. Still alternatively, the switching second feeding point C2 is electrically connected to the first signal source 51 alone. Still alternatively, the switch switching circuit 60 switches the first and second feeding points C1 and C2 while being electrically connected to the first signal source 51.

Optionally, the switch switching circuit 60 may switch the working antenna of the satellite communication band to a suitable transceiving mode when the signal strength of the satellite communication band is less than a first preset strength threshold. The working manners of the first antenna unit 10 and the second antenna unit 20 for the satellite communication frequency band include: 1. the first antenna unit 10 transmits and receives satellite signals; 2. the second antenna unit 20 transmits and receives satellite signals; 3. the first antenna unit 10 transmits a transmission frequency band of satellite signals, and the second antenna unit 20 receives a reception frequency band of satellite signals; 4. the first antenna unit 10 receives a reception frequency band of satellite signals, and the second antenna unit 20 transmits a transmission frequency band of satellite signals.

Still alternatively, the switch switching circuit 60 may be configured to electrically connect the first feeding point C1 according to the signal strength of the first antenna unit 10 being greater than a first preset strength threshold, and transmit and receive satellite signals through the first antenna unit 10; or is configured to electrically connect to a second feeding point C2 according to the signal strength of the second antenna unit 20 being greater than a first preset strength threshold, and transmit and receive satellite signals through the second antenna unit 20; or according to the signal strength of the first antenna unit 10 for the receiving frequency band of the satellite signal being greater than a first preset strength threshold value and the signal strength of the second antenna unit 20 for the transmitting frequency band of the satellite signal being greater than a first preset strength threshold value, the satellite signal receiving device is configured to receive the satellite signal through the first antenna unit 10 and transmit the satellite signal through the second antenna unit 20; or according to the signal strength of the first antenna unit 10 for the transmitting frequency band of the satellite signal being greater than the first preset strength threshold value and the signal strength of the second antenna unit 20 for the receiving frequency band of the satellite signal being greater than the first preset strength threshold value, the satellite communication stability of the electronic device can be achieved by configuring to transmit the satellite signal through the first antenna unit 10 and receive the satellite signal through the second antenna unit 20.

Optionally, the first antenna unit 10 is directed in a direction towards the side of the top edge 321 when operating in the satellite communication band, and the second antenna unit 20 is directed in a direction towards the side of the top edge 321 when operating in the satellite communication band.

In the electronic device 1000 provided by the embodiment of the application, the first antenna unit 10 is disposed on the top edge 321, the first antenna unit 10 includes the first radiator 11 and the second radiator 12, the first radiator 11 includes the first free end A1, the first grounding point B1, the first feeding point C1 and the second free end A2, the second radiator 12 includes the third free end A3 and the second grounding point B2, the first grounding point B1 and the second grounding point B2 are grounded, and a first coupling gap N1 is formed between the second free end A2 and the third free end A3; the second antenna unit 20 is arranged on the first side 323, the second antenna unit 20 comprises a third radiator 13, the third radiator 13 comprises a third grounding point B3, a second feeding point C2 and a fourth free end A4 which are sequentially arranged, and the third grounding point B3 is grounded; the first signal source 51 is configured to provide a first excitation signal in a satellite communication band; the switch switching circuit 60 is electrically connected between the first feeding point C1, the second feeding point C2 and the signal source, and the switch switching circuit 60 is configured to switch at least one of the first feeding point C1 and the second feeding point C2 to be electrically connected with the first signal source 51, so as to switch the working antenna of the satellite communication frequency band when the signal strength of the satellite communication frequency band is poor, thereby improving the satellite communication stability of the electronic device 1000.

In the case that the switch switching circuit 60 is electrically connected to the first feeding point C1, in the embodiment of the present application, the top edge IFA branch and the top edge T-type branch+l-type parasitic branch are compared to illustrate that the top edge T-type branch+l-type parasitic branch has an upper hemispherical duty ratio for improving the satellite communication frequency band. The first signal source 51 is used to provide the first antenna unit 10 with a first excitation signal in a satellite communication band.

Referring to fig. 5, the top edge 321 is taken as IFA node and the reference floor 500 is taken as an example to form a 3/2 symmetric dipole structure. The electrical length of the first radiator 11 is close to 1/4 wavelength of the center frequency point of the satellite communication frequency band. The electrical length of the reference floor 500 in the length direction is approximately 5/4 wavelength of the center frequency point of the satellite communication band. The sum of the electrical lengths of the first radiator 11 and the electrical length of the reference floor 500 in the length direction is approximately 3/2 wavelength of the center frequency point of the satellite communication frequency band. Wherein the satellite communication frequency band is about 1980-2200MHz.

The electrical length described in the present application may satisfy the following formula:

where L is the physical length, a is the transmission time of the electrical or electromagnetic signal in the medium, and b is the transmission time in the free scene.

Referring to fig. 5, the reference floor 500 is divided into a first floor area 510, a second floor area 520, and a third floor area 530 in the length direction. Wherein the first floor area 510 is 1/5 of the total length of the reference floor 500, the second floor area 520 is 2/5 of the total length of the reference floor 500, and the third floor area 530 is 2/5 of the total length of the reference floor 500.

Referring to fig. 6, according to the current distribution on the reference floor 500 and IFA branches, the radiation field formed by the top IFA satellite antenna and the reference floor 500 is divided into three sub-radiation fields, a first sub-radiation field Q1, a second sub-radiation field Q2 and a third sub-radiation field Q3, in the longitudinal direction.

The current distribution on the reference floor 500 of the top edge IFA satellite antenna is as follows: the feeding point C1 of the first radiator 11 and the first grounding point B1 are all the positions where the current strong points are located. The first floor region 510 is located at a position corresponding to the first radiator 11 in the width direction of the reference floor 500, which is a region where the current is stronger, and is also a region where the current phase is relatively leading; the first floor area 510 is not located in a region where the current is weaker than the first radiator 11, and is also a region where the current phase is relatively retarded. Since the radiation direction is directed from the leading phase to the lagging phase, the radiation direction of the first sub-radiation field Q1 (first side lobe) is directed to a side of the first floor area 510 (e.g. left side in fig. 5) which does not correspond to the first radiator 11.

The second floor region 520 corresponds to a region where the current is stronger than the first radiator 11 in the width direction of the reference floor 500, and is also a region where the current phase is relatively leading; the second floor area 520 is not located in a region where the current is weaker than the first radiator 11, and is also a region where the current phase is relatively retarded. Accordingly, the radiation direction of the second sub-radiation field Q2 (second side lobe) is directed to a side (e.g., left side in fig. 5) of the second floor area 520 which does not correspond to the first radiator 11. Since the overall intensity of the current of the second floor region 520 is smaller than that of the first floor region 510, the radiation intensity of the second side lobe is smaller than that of the first side lobe.

Since the currents of the first radiator 11 and the reference floor 500 are mainly distributed along the length direction of the reference floor 500, the currents on the reference floor 500 are mainly distributed from top to bottom along the longitudinal direction of the reference floor 500, wherein the current intensity near the top edge 321 in the longitudinal direction is greater than the current intensity near the bottom edge 322, and therefore, the radiation direction of the third sub-radiation field Q3 is downward radiation. Since the current intensity difference in the width direction of the reference floor 500 is smaller than the current intensity difference in the length direction of the reference floor 500, the third sub-radiation field Q3 is a main lobe.

The electrical length between the first grounding point B1 and the second free end A2 is close to 1/4 wavelength of a satellite frequency band. The term "close to" as used herein means floating up and down to 1/10 wavelength.

In this embodiment, referring to fig. 7a, the first radiator 11 is a T-shaped antenna. The second radiator 12 forms a t+l-type antenna with the first radiator 11. Optionally, the electrical length of the second radiator 12 is smaller than the electrical length of the first ground point B1 to the second free end A2. The electrical length between the first free end A1 and the first ground point B1 is slightly greater than the electrical length from the first ground point B1 to the second free end A2. Further, the electrical length between the first free end A1 and the second free end A2 is close to 1/2 wavelength of the satellite communication frequency band. The above electrical length design makes the current flow direction on the second radiator 12 the same as the current flow direction on the first radiator 11, for example, the current flow on the first radiator 11 is distributed to flow from the first free end A1 to the second free end A2, and the current flow on the second radiator 12 is distributed to flow from the third free end A3 to the second ground point B2. Wherein, the first grounding point B1 and the second grounding point B2 are both strong current positions. Accordingly, the areas of the reference floor 500 close to the first grounding point B1 and the second grounding point B2 are all areas with high current. The area of the reference floor 500 corresponding to the first radiator 11 and the second radiator 12 is also a high current area.

On the one hand, since the current between the first free end A1 and the first ground point B1 on the first radiator 11 and the current between the first ground point B1 and the second free end A2 are the same-direction current. At this time, the current mode of the first radiator 11 is similar to that of the dipole antenna, and the current mode is 1/2 wavelength mode. The pattern of the first radiator 11 may be referred to as a dipole antenna pattern, in particular a loop pattern around the branches. The radiation direction of the first radiator 11 is the direction in which the first radiator 11 faces away from the reference floor 500 due to the influence (reflection) of the reference floor 500. In the electronic device 1000, the first radiator 11 is directed to radiate upward toward the top edge 321, so that the satellite communication band has a higher upper hemispherical duty cycle.

In the second aspect, the second radiator 12 is disposed near the first side 323 or partially disposed at the first side 323. The first radiator 11 forms an ifa+l antenna between the first ground point B1 and the second free end A2, and the second radiator 12. And the current on the first radiator 11 and the current on the second radiator 12 are in the same direction, and the second grounding point B2 is a current strong point position. Therefore, the second radiator 12 further increases the current intensity of the first side 323 of the first floor area 510 and the second floor area 520, improves the directivity coefficients of the first sub-radiation field Q1 and the second sub-radiation field Q2, further enhances the intensities of the first sub-radiation field Q1 and the second sub-radiation field Q2, and can make the intensity of the first sub-radiation field Q1 larger than the intensity of the third sub-radiation field Q3, and the main lobe formed by the first sub-radiation field Q1 further increases the upper hemisphere duty ratio of the satellite communication frequency band.

Referring to fig. 7b, fig. 7b is a diagram illustrating a t+l antenna formed by the first radiator 11 and the second radiator 12. It can be seen that under the influence of the first radiator 11 being a T-shaped antenna and the second radiator 12, the intensity of the first sub-radiation field Q1 is increased and radiates upwards towards the top edge 321. The intensity of the first sub-radiation field Q1 is strongest, and the intensity of the third sub-radiation field Q3 is weakest, and the first radiator 11 and the second radiator 12 form a t+l antenna, which radiates upwards in the main radiation direction of the satellite communication frequency band.

The two functions are combined, and the two functions of improving the upper hemisphere duty ratio of the satellite communication frequency band can enable the antenna unit of the IFA+L antenna provided by the application to have the upper hemisphere duty ratio of the satellite communication frequency band.

Optionally, referring to fig. 4, the second grounding point B2 is located at the first side 323. Further, a portion of the second radiator 12 is disposed on the top side 321 of the electronic device 1000, and another portion of the second grounding point B2 is disposed on the first side 323. As described above, the second grounding point B2 is located on the first side 323, so that the intensity of the floor current on the side of the first side 323 is further enhanced. Further, the position of the second grounding point B2 electrically connected to the reference floor 500 is located in the first floor area 510, so that the floor current on the side of the first side 323 corresponding to the first floor area 510 is further enhanced, thereby further enhancing the intensity of the first sub-radiation field Q1 and improving the upper hemispherical duty ratio of the satellite communication frequency band.

Referring to fig. 8, the second radiator 12 further includes a first connection point E1. The first connection point E1 is located between the third free end A3 and the second ground point B2.

Referring to fig. 8, the first antenna unit 10 further includes a first switch circuit K1. One end of the first switch circuit K1 is electrically connected to the first connection point E1, and the other end of the first switch circuit K1 is grounded. The first switch circuit K1 is configured to switch to one of a short circuit ground, an open circuit, an inductive ground, and a capacitive ground.

In this embodiment, the second radiator 12 is coupled to the first radiator 11, and supports a satellite communication frequency band together. Wherein the electrical length of the second radiator 12 may be tuned for the first antenna element 10 supporting frequency bands or for pattern pointing. The electrical length of the second radiator 12 is tuned by providing a first switching circuit K1 and configuring the first switching circuit K1 to be one of short-circuited ground, open-circuited, inductively ground, and capacitively ground. Of course, the first switch circuit K1 may be configured to be grounded by an inductor and grounded by a capacitor.

In this embodiment, the first signal source 51 is capable of providing not only the first antenna unit 10 with the first excitation signal of the satellite communication band, but also the first signal source 51 is capable of providing the first antenna unit 10 with the second excitation signal of the mobile communication band. The first signal source 51 is configured to provide the first excitation signal and the second excitation signal in a time-sharing manner. Specifically, after the electronic device 1000 receives the condition of triggering the satellite connection, the first signal source 51 provides the first antenna unit 10 with a first excitation signal of the satellite communication frequency band, and after the electronic device 1000 closes the satellite connection, or when the satellite connection is closed and the mobile communication connection is triggered, the first signal source 51 provides the first antenna unit 10 with a second excitation signal of the mobile communication frequency band, where the mobile communication frequency band is about 1.5 GHz to about 2.5GHz, and further, the mobile communication frequency band is the MHB frequency band, so that the multiplexing of the first antenna unit 10 into an antenna supporting the satellite communication frequency band and the MHB frequency band in a time period is achieved.

Optionally, the first signal source 51 includes a first sub-signal source and a second sub-signal source, where the first sub-signal source is used to provide a first excitation signal in a satellite communication frequency band for the first antenna unit 10, and the first sub-signal source includes, but is not limited to, a satellite communication chip. The second sub-signal source is used for providing a second excitation signal of the mobile communication band for the first antenna unit 10, and the second sub-signal source includes, but is not limited to, a mobile communication chip. The first sub-signal source and the second sub-signal source are electrically connected to the first feeding point C1. The first and second sub-signal sources are configured to provide the first antenna unit 10 with a first excitation signal of a satellite communication band and a second excitation signal of a mobile communication band in time periods.

Referring to fig. 9, the first antenna unit 10 further includes a first matching circuit M1. The first matching circuit M1 is electrically connected between the first feeding point C1 and the first signal source 51. The first matching circuit M1 includes a first switch M11 and at least one first impedance tuning branch M12 electrically connected to the first switch M11. The number of first impedance tuning branches M12 is one or more. The first impedance tuning branch M12 includes, but is not limited to, an inductance, or a capacitance. When the number of the first impedance tuning branches M12 is plural, the impedance of at least two first impedance tuning branches M12 is different, or the impedance of each first impedance tuning branch M12 is different. The first switch M11 may select one of the plurality of first impedance tuning branches M12 to be turned on, or may select the plurality of first impedance tuning branches M12 to be turned on. The first matching circuit M1 is configured to adjust a switching state of the first switch M11 to achieve impedance matching when the first signal source 51 provides the first excitation signal and the second excitation signal. Alternatively, the number of the first switches M11 may be one or more.

For example, the first impedance tuning branch M12 comprises a ground tuning inductance, which is electrically connected to the first feeding point C1 for tuning the first antenna unit 10 to support a satellite communication frequency band, e.g. 1980-2200MHz, when the first signal source 51 provides the first excitation signal, the first switch M11 being configured to be in a closed state. When the first signal source 51 provides the second excitation signal, the first is configured to be in an off state, and the electrical connection between the ground tuning inductance and the first feeding point C1 is broken, for tuning the first antenna unit 10 to support the MHB frequency band, for example, the B1 frequency band, the B3 frequency band, or the like.

In addition, the present application provides that the first radiator 11 and the second radiator 12 can generate a plurality of resonant modes to support a plurality of frequency bands, for example, a portion between the first free end A1 and the first grounding point B1, a portion between the first grounding point B1 and the second free end A2, and a portion between the third free end A3 and the second grounding point B2 can respectively form different resonant modes to support different frequency bands. The first switch M11 in the first matching circuit M1 may be further switched to a first impedance tuning branch M12 with different impedance values, so as to implement impedance matching of multiple frequency bands. The plurality of mobile communication bands supported by the first radiator 11 and the second radiator 12 are switchable or adjustable so as to cover the MHB full band.

Referring to the foregoing, when the switch switching circuit 60 switches to turn on the first signal source 51 and the second feeding point C2, the first signal source 51 can provide not only the first excitation signal of the satellite communication frequency band for the second antenna unit 20, but also the first signal source 51 can provide the second excitation signal of the mobile communication frequency band for the second antenna unit 20. The first signal source 51 is configured to provide the first excitation signal and the second excitation signal in a time-sharing manner.

Referring to fig. 9, the second antenna unit 20 further includes a second matching circuit M2. The second matching circuit M2 is electrically connected between the second feeding point C2 and the first signal source 51. The second matching circuit M2 includes a second switch M21 and at least one second impedance tuning branch M22 electrically connected to the second switch M21. The function and specific structure of the second matching circuit M2 can be referred to the function and specific structure of the first matching circuit M1.

When the switch switching circuit 60 is configured to switch on the first signal source 51 and the second feeding point C2, the second matching circuit M2 is configured to adjust the switching state of the second switch M21 to achieve impedance matching when the first signal source 51 provides the first excitation signal and the second excitation signal, so as to achieve that the second antenna unit 20 can be used to support a satellite communication frequency band or a mobile communication frequency band in a time-sharing manner. Referring to the aforementioned first antenna unit 10, the second antenna unit 20 may realize full coverage of the MHB frequency band when supporting the mobile communication frequency band.

When the first signal source 51 provides the mobile communication frequency band, the switch switching circuit 60 may switch to the first signal source 51 to electrically connect the first feeding point C1 and the second feeding point C2, at this time, since the first antenna unit 10 and the second antenna unit 20 are respectively disposed on different sides of the frame, the directional diagram when the dual-antenna unit supports the mobile communication frequency band simultaneously is different from the directional diagram when the single antenna unit supports the mobile communication frequency band simultaneously, thereby reducing coverage blind areas of the mobile communication frequency band and improving antenna performance.

The second antenna element 20 is specifically illustrated in the following with reference to the accompanying drawings.

In this embodiment, the second antenna unit 20 is disposed on the first side 323. Optionally, the second antenna element 20 is disposed on the first side 323 near the upper half of the top edge 321.

Referring to fig. 10, optionally, the second antenna element 20 may be connected to the first antenna element 10. Still alternatively, the third radiator 13 shares a ground point with said second ground point B2 of said second radiator 12.

Referring to fig. 8, optionally, the second antenna unit 20 may be spaced apart from the first antenna unit 10. Optionally, a third radiator 13 is spaced from the second ground point B2 of the second radiator 12.

Referring to fig. 8, optionally, the fourth free end A4 is located between the second feeding point C2 and the top edge 321. In other words, the fourth free end A4 is oriented toward the top edge 321. As such, the pattern of the second antenna element 20 upon activation of the first signal source 51 is directed more toward the side of the top edge 321.

In other embodiments, the fourth free end A4 may also be located between the second free end A2 and the top edge 321, the directional diagram being tuned towards the side of the top edge 321 by tuning the parasitic radiator of the third radiator 13.

Optionally, the third radiator 13 forms an IFA antenna or a LOOP antenna.

Referring to fig. 11, for example, the distance between the second feeding point C2 and the fourth free end A4 is greater than 1/2 of the total length of the third radiator 13, the third radiator 13 forms an IFA antenna, and the third radiator 13 operates in a 1/4 wavelength mode when supporting the satellite communication frequency band.

Referring to fig. 8, for another example, the distance between the second feeding point C2 and the fourth free end A4 is less than 1/2 of the total length of the third radiator 13. The third radiator 13 forms a LOOP antenna, and the third radiator 13 operates in a 1/4 to 1/2 wavelength mode when supporting a satellite communication band. When the second feeding point C2 is close to the fourth free end A4, the third radiator 13 operates in a 1/2 wavelength mode when supporting the satellite communication band.

Optionally, referring to fig. 12, a third radiator 13 is spaced from the second radiator 12. The second antenna unit 20 further includes a fourth radiator 14 and a second switching circuit K2. The fourth radiator 14 is arranged between said second radiator 12 and the third radiator 13. The fourth radiator 14 includes a fifth free end A5, a second connection point E2, and a fourth ground point B4, which are sequentially disposed. The fourth grounding point B4 is grounded. Optionally, a fourth grounding point B4 is spaced from the second grounding point B2. Still alternatively, the fourth grounding point B4 and the second grounding point B2 are located at the same position. A second coupling gap N2 is between the fifth free end A5 and the fourth free end A4. The second coupling slit N2 may refer to the description of the first coupling slit N1 described above.

One end of the second switch circuit K2 is electrically connected to the second connection point E2. The other end of the second switch circuit K2 is grounded. The second switch circuit K2 is configured to switch to one of a short circuit ground, an open circuit, an inductive ground, and a capacitive ground.

When the first signal source 51 provides an excitation signal to the second antenna unit 20, the third radiator 13 is a main radiator, and the fourth radiator 14 is a parasitic radiator.

In this embodiment, the fourth radiator 14 is coupled to the third radiator 13, and supports the satellite communication band together. Wherein the electrical length of the third radiator 13 may be tuned for the second antenna element 20 supporting frequency bands or for the directional pattern. The electrical length of the fourth radiator 14 is tuned by providing the second switching circuit K2 and configuring the second switching circuit K2 to be one of short-circuit ground, open-circuit, inductive ground, and capacitive ground. Of course, the second switch circuit K2 may be configured to be simultaneously grounded by an inductor and a capacitor.

Optionally, referring to fig. 12, the antenna assembly 100 further includes a second signal source 52. The fourth radiator 14 further comprises a third feed point C3. The second signal source 52 is electrically connected to the third feeding point C3. The third feeding point C3 is located between the second connection point E2 and the fourth free end A4. Further, the third feeding point C3 is close to the fourth free end A4.

Optionally, the second signal source 52 is configured to excite the fourth radiator 14 to form a resonant mode supporting a low frequency band when the first signal source 51 provides the second excitation signal, and to be electrically disconnected from the third feeding point C3 when the first signal source 51 provides the first excitation signal.

Specifically, the second signal source 52 provides an excitation signal in the mobile communication band for the second antenna unit 20. When the first signal source 51 provides a first excitation signal, which is illustrated as satellite communication at this time, the second signal source 52 is configured to be electrically disconnected from the third feeding point C3, or to not provide an excitation signal. When the first signal source 51 provides a second excitation signal, which is illustrated as mobile communication at this time, the second signal source 52 is configured to be electrically connected to the third feeding point C3. Since the first antenna unit 10 operates in the MHB frequency band and/or the third radiator 13 operates in the MHB frequency band, the embodiment designs that the fourth radiator 14 operates in the low frequency band, so as to improve the isolation between the first antenna unit 10 and the third radiator 13, and also meet the requirement that the first side 323 is provided with a low frequency antenna and a medium-high frequency antenna.

Optionally, when the electronic device 1000 is configured to trigger a satellite connection condition, the first signal source 51 is configured to provide the first excitation signal to the first feeding point C1.

Conditions under which the electronic device 1000 is configured to trigger a satellite connection include, but are not limited to, an operator opening a soft function key displayed on the electronic device 1000 that triggers a satellite connection; or the electronic device 1000 detects that the signal strength of all the mobile communication antennas is smaller than the preset strength value (weak or no signal), so that mobile communication cannot be supported, further, satellite connection is intelligently triggered, an operator is prompted to be satellite connection at the moment by displaying an icon or a prompt box and the like, and better satellite connection is established by adjusting the gesture of the electronic device 1000.

The switch switching circuit 60 is configured to switch on the first signal source 51 and the first feeding point C1 when the electronic device 1000 is in the hand-held satellite communication mode, and the first antenna unit 10 transmits and receives satellite signals. In the hand-held satellite call mode, the operator holds the electronic device 1000 in his/her hand and places the electronic device away from his/her head and performs a call, in this mode, since the first antenna unit 10 and the second antenna unit 20 are both away from his/her head, and thus, no consideration is required to be given to the influence of the human head medium on the first antenna unit 10 and/or the second antenna unit 20, and in the case that the working efficiency of the first antenna unit 10 is greater than that of the second antenna unit 20, the switch switching circuit 60 is configured to conduct the electrical connection between the first feeding point C1 and the first signal source 51, and the first signal source 51 is configured to transmit and receive satellite signals through the first antenna unit 10. If the operating efficiency of the second antenna unit 20 is greater than the operating efficiency of the first antenna unit 10, the switch switching circuit 60 is configured to electrically connect the second feeding point C2 with the first signal source 51, and the first signal source 51 is configured to transmit and receive satellite signals through the second antenna unit 20.

Optionally, the electronic device 1000 is far from the head of the human body, which specifically means that the distance between the first antenna unit 10 on the electronic device 1000 and the head of the human body is greater than or equal to 5cm. Wherein the distance between the first antenna unit 10 and the head of the human body can be detected by a distance sensor, an ambient light sensor, a proximity sensor, etc. located near the first antenna unit 10 on the electronic device 1000.

The switch switching circuit 60 is configured to turn on the first signal source 51 and the second feeding point C2 when the electronic device 1000 is in the satellite communication mode, and transmit and receive satellite signals through the second antenna unit 20. The satellite communication mode is a communication mode in which the operator holds the electronic device 1000 near the head, and in this mode, since the first antenna unit 10 is located near the head, the satellite signals are easily received or transmitted due to the influence of the head medium loading, and at this time, the second antenna unit 20 is relatively far away from the head, and the head medium loading has little or no influence. At this time, the switch switching circuit 60 is configured to electrically connect the second feeding point C2 to the first signal source 51, and the first signal source 51 is configured to transmit and receive satellite signals through the second antenna unit 20, so as to ensure that good satellite communication can be achieved even in the head-to-hand satellite communication mode of the electronic device 1000. Alternatively, the first side 323 may be the corresponding side of the operator to the left of the operator when the operator is facing the display screen. Alternatively, the electronic device 1000 is placed near the head, specifically, the distance between the first antenna unit 10 on the electronic device 1000 and the head of the human body is less than 5cm.

Considering SAR compliance in the head-hand satellite call mode again, the first side 323 is relatively far from the head due to the close proximity of the top 321 to the head. It may be desirable to reduce the power of the first antenna unit 10 in the head-to-hand satellite call mode to meet SAR compliance. Therefore, in the head-hand satellite communication mode, the switch switching circuit 60 is configured to electrically connect the second feeding point C2 with the first signal source 51, and the first signal source 51 is configured to transmit and receive satellite signals through the second antenna unit 20, so as to ensure that SAR compliance is satisfied and better power is ensured in the satellite communication frequency band when the electronic device 1000 is in the head-hand satellite communication mode.

Still alternatively, the switch switching circuit 60 is configured to turn on the first signal source 51 and the first and second feeding points C1 and C2 when the electronic device 1000 is in the hand-held satellite call mode, transmit satellite signals through the first antenna unit 10, and receive satellite signals through the second antenna unit 20. When the first antenna unit 10 has a higher transmission gain and the second antenna unit 20 has a higher reception gain, the antenna unit is configured to transmit satellite signals through the first antenna unit 10 and receive satellite signals through the second antenna unit 20, thereby improving the communication quality of the satellite communication frequency band.

Still alternatively, the switch switching circuit 60 is configured to turn on the first signal source 51 and the first and second feeding points C1 and C2 when the electronic device 1000 is in the hand-held satellite call mode, transmit satellite signals through the second antenna unit 20, and receive satellite signals through the first antenna unit 10. When the first antenna unit 10 is located at a position where SAR compliance is required to be considered and performance of a satellite communication band is ensured, and the second antenna unit 20 is located at a position relatively far from a human body, there is no need to reduce the transmission power or when the transmission power is reduced, the embodiment is configured to transmit satellite signals through the second antenna unit 20 and receive satellite signals through the first antenna unit 10 when the electronic device 1000 is in the handheld satellite communication mode, so as to meet SAR compliance without reducing the transmission power of the antenna. In addition, the third antenna unit 30 and the head and the hand of the second antenna unit 20 are relatively far away from the human body in the satellite communication mode, so that the influence of medium loading of the human body is small, and the stability of satellite frequency band communication in the head and hand satellite communication mode is improved.

Still alternatively, the electronic device 1000 may further enable the switch switching circuit 60 to be configured to electrically connect the first feeding point C1 and/or the second feeding point C2 according to the signal strength of the satellite communication frequency band, so as to ensure high efficiency of satellite communication. For example, the electronic device 1000 is configured to electrically connect the first feeding point C1 when it is detected that the signal strength of the first antenna unit 10 is greater than the signal strength of the second antenna unit 20. The switching circuit 60 is configured to electrically connect the second feeding point C2 when the electronic device 1000 detects that the signal strength of the second antenna unit 20 is greater than the signal strength of the first antenna unit 10. For another example, the switch switching circuit 60 is configured to electrically connect the first feeding point C1 according to the electronic device 1000 when it is detected that the signal strength of the first antenna unit 10 is greater than the second preset strength threshold. According to the electronic device 1000, when it is detected that the signal strength of the second antenna unit 20 is greater than the second preset strength threshold, the switch switching circuit 60 is configured to electrically connect to the second feeding point C2. For another example, according to the electronic device 1000, when it is detected that the signal strength of the receiving frequency band during the operation of the first antenna unit 10 is greater than the second preset strength threshold, and the signal strength of the transmitting frequency band is greater than the second preset strength threshold, the switch switching circuit 60 is configured to electrically connect the first feeding point C1 or the second feeding point C2, so as to transmit satellite signals through the first antenna unit 10 and receive satellite signals through the second antenna unit 20 in a time period.

Optionally, referring to fig. 13, the antenna assembly 100 further includes a third antenna unit 30. The frame 320 is enclosed around the periphery of the rear cover 400. At least a portion of the rear cover 400 is made of an insulating material. The third antenna element 30 comprises a fifth radiator 15. The fifth radiator 15 is provided on the rear cover 400 or is provided corresponding to the rear cover 400. The fifth radiator 15 is provided at or corresponds to the insulation region of the rear cover 400. In the embodiment in which the fifth radiator 15 is disposed on the rear cover 400, the manner in which the fifth radiator 15 is disposed on the rear cover 400 is not limited, for example, the fifth radiator 15 is a metal radiator disposed in or on the rear cover 400, or a flexible circuit board antenna formed on a flexible circuit board (Flexible Printed Circuit board, FPC), or a laser direct Structuring antenna formed by Laser Direct Structuring (LDS), or a printed direct Structuring antenna formed by printing (PRINT DIRECT structures, PDS).

The fifth radiator 15 may be a patch antenna, a planar inverted-F antenna, or the like.

The fifth radiator 15 comprises a fourth feeding point C4, the switch switching circuit 60 is further electrically connected to the fourth feeding point C4, the switch switching circuit 60 is configured to switch on the first signal source 51 and the fourth feeding point C4, the second feeding point C2, transmit satellite signals through the third antenna unit 30, and receive satellite signals through the second antenna unit 20 when the electronic device 1000 is in a head-hand satellite call mode. Since the third radiator 13 is disposed on or corresponds to the rear cover 400, the third radiator 13 has less SAR effect on the human body due to the shielding of the metal bezel 320 and the display screen. In this embodiment, when the electronic device 1000 is in the head-to-hand satellite communication mode, the third antenna unit 30 is configured to transmit satellite signals, and the second antenna unit 20 is configured to receive satellite signals, so as to reduce the risk of SAR superscalar, thereby meeting SAR compliance and ensuring communication performance of satellite frequency bands. In addition, the third antenna unit 30 and the head and the hand of the second antenna unit 20 are relatively far away from the human body in the satellite communication mode, so that the influence of medium loading of the human body is small, and the stability of satellite frequency band communication in the head and hand satellite communication mode is improved.

In other embodiments, the switch switching circuit 60 is configured to electrically connect with the fourth feeding point C4, the second feeding point C2, receive satellite signals through the third antenna unit 30, and transmit satellite signals through the second antenna unit 20 when the electronic device 1000 is in a head-to-hand satellite call mode.

In other embodiments, the switch switching circuit 60 is configured to electrically connect the fourth feeding point C4 when the electronic device 1000 is in the satellite communication mode, and transmit and receive satellite signals through the third antenna unit 30, so as to ensure the communication performance of the satellite frequency band while meeting SAR compliance, and not be loaded by human body medium in the satellite communication mode, thereby improving the stability of satellite frequency band communication in the satellite communication mode.

In this embodiment, the first signal source 51 transmits and receives satellite signals in time periods due to the high power during the operation of the satellite communication band.

Referring to fig. 13, the switch switching circuit 60 is further electrically connected to the fifth radiator 15. The switch switching circuit 60 is further configured to switch the first signal source 51 to electrically connect the third radiator 13 and/or the fifth radiator 15. Wherein the switch switching circuit 60 is further configured to switch the first signal source 51 to electrically connect the third radiator 13 and the fifth radiator 15. For example, when satellite communication is performed, at time t1, the switch switching circuit 60 gates the third antenna unit 30 to be electrically connected to the first signal source 51, so as to perform satellite signal transmission for time t2, and then the switch switching circuit 60 gates the second antenna unit 20 to be electrically connected to the first signal source 51, so as to perform satellite signal reception.

Referring to fig. 14, the antenna assembly 100 further includes a combiner 70. The combiner 70 includes a transmit path 71, a receive path 72, and a combining path 73. One end of the emission path 71 is electrically connected to the fifth radiator 15. The other end of the transmitting path 71 is electrically connected to one end of the combining path 73. One end of the receiving path 72 is electrically connected to the third radiator 13. The other end of the receiving path 72 is electrically connected to one end of the combining path 73. The other end of the combining path 73 is electrically connected to the first signal source 51. Specifically, the other end of the combining path 73 is electrically connected to the switch switching circuit 60. The switch switching circuit 60 gates the other end of the first antenna element 10 or the combining path 73 to be electrically connected to the first signal source 51. The transmit path 71 is configured to transmit a transmit frequency band of satellite signals. The receive path 72 is configured to transmit a receive frequency band of satellite signals. The present embodiment is configured to turn on the fourth feeding point C4, the second feeding point C2, transmit satellite signals through the third antenna unit 30, and receive satellite signals through the second antenna unit 20 when the electronic device 1000 is in the head-to-hand satellite call mode; or the switch switching circuit 60 is configured to turn on the fourth feeding point C4 and the second feeding point C2 when the electronic device 1000 is in the head-to-hand satellite communication mode, receive satellite signals through the third antenna unit 30, and transmit satellite signals through the second antenna unit 20, and in the embodiment in which the combiner 70 is provided to combine signals of the third antenna unit 30 and the second antenna unit 20, since the transmitting frequency band and the receiving frequency band of satellite signals are operated in a time-sharing manner, signals of the transmitting frequency band and the receiving frequency band remain to be independently transmitted after passing through the combiner 70, and the third antenna unit 30 and the second antenna unit 20 do not need to be switched by the switch to transmit and receive satellite signals respectively.

Referring to fig. 15 and 16, the antenna assembly 100 further includes at least one notch structure 80. When the notch structure 80 is one, the notch structure 80 is disposed on the first side 323 or the second side 324. When the number of the notch structures 80 is two or more, a plurality of the notch structures 80 are disposed on the first side 323 and/or the second side 324. The notch structure 80 includes a fifth ground point B5. The fifth ground point B5 is electrically connected to a current strong region of the floor current on the reference floor 500. When the first antenna unit 10 is operating in the satellite communication band, the current-carrying region of the reference floor 500 is in the range of 0.3-0.5 times the total length of the reference floor 500 in the direction in which the top edge 321 points to the reference floor 500, and the notch structure 80 binds the high floor current to the upper half of the reference floor 500 in the upper half of the reference floor 500 to increase the upper hemisphere duty cycle.

Alternatively, the electrical length of the notch structure 80 is approximately or 1/4 of the wavelength of the satellite communications band to resonate under excitation of the floor current, thereby confining the strong current of the floor current in the vicinity of the notch structure 80.

In this embodiment, the first radiator 11 and the reference floor 500 form a 3/2 wavelength symmetric dipole structure. The fifth grounding point B5 is electrically connected to the current strong region in the region where the second 1/2 wavelength of the 3/2 wavelength symmetric dipole structure is located, so that the notch structure 80 is excited by a strong floor current to form resonance, and further the floor current is bound in the notch structure 80, i.e. more floor current is concentrated in the region near the notch structure 80, so that the floor current is reduced to be transmitted downwards along the longitudinal direction, the third sub-radiation field Q3 radiated downwards is weakened, the first sub-radiation field Q1 radiated upwards is enhanced, and the upper hemispherical duty ratio of the satellite signal is further improved.

Referring to fig. 17, optionally, the switching circuit 60 is configured to turn on the first signal source 51 and the first feeding point C1, and at least a portion of the third radiator 13 forms the notch structure 80. For example, the third radiator 13 is an IFA antenna, the electrical length of the third radiator 13 is close to or is 1/4 wavelength of the satellite communication frequency band, when the switch switching circuit 60 is configured to conduct the first signal source 51 and the first feeding point C1, and the satellite signal is transmitted and received through the first antenna unit 10, the third radiator 13 is not electrically connected to the first signal source 51, the third radiator 13 is an L-shaped branch, the third grounding point B3 is electrically connected to a current strong region of the floor current, at this time, the third radiator 13 may resonate under the excitation of the floor current, and the third radiator 13 forms the notch structure 80.

Optionally, referring to fig. 17, the notch structure 80 includes a notch branch 81, where the notch branch 81 is disposed on the first side 323 or the second side 324, and the fifth grounding point B5 is disposed on the notch branch 81. The fifth ground point B5 is electrically connected to the reference floor 500. The electrical length of the notch stub 81 is at or near 1/4 wavelength of the satellite communications band.

Still alternatively, referring to fig. 18, notch structure 80 includes notch stub 81 and impedance tuning circuit 82. The notch branch 81 is disposed on the first side 323 or the second side 324, and the fifth grounding point B5 is disposed on the notch branch 81. The sum of the electrical lengths of the notch branches 81 of the notch structure 80 and the electrical length of the impedance tuning circuit 82 is at or near 1/4 wavelength of the satellite communications band. The impedance tuning circuit 82 includes an inductance, a capacitance, and the like.

Still alternatively, referring to fig. 19, the notch structure 80 includes a notch branch 81, a first sub-switch 83, and an impedance tuning circuit 82. The notch branch 81 is disposed on the first side 323 or the second side 324, and the fifth grounding point B5 is disposed on the notch branch 81. One end of the first sub-switch 83 is electrically connected to the fifth ground point B5, and the other end of the first sub-switch 83 is switchable to be electrically connected to the impedance tuning circuit 82 or to be electrically connected to the reference floor 500. The sum of the electrical lengths of the notch branches 81 of the notch structure 80 and the electrical length of the impedance tuning circuit 82 is at or near 1/4 wavelength of the satellite communications band. The impedance tuning circuit 82 includes an inductance, a capacitance, and the like.

For example, referring to fig. 19, the third radiator 13 is a loop antenna, and the electrical length of the third radiator 13 is close to 1/2 wavelength of the satellite communication band. When the first signal source 51 is configured to transmit and receive satellite signals through the first antenna unit 10, the first sub-switch 83 is switched to be electrically connected to the impedance tuning circuit 82, and the sum of the electrical length of the third radiator 13 and the electrical length of the impedance tuning circuit 82 is close to or 1/4 wavelength of the satellite communication band. When the first signal source 51 is configured to transmit and receive satellite signals through the first antenna unit 10, the first sub-switch 83 is switched to be electrically connected to the reference floor 500.

Still alternatively, referring to fig. 20, the third radiator 13 is spaced apart from the notch structure 80. For example, notch structure 80 is a portion or all of fourth radiator 14. Wherein the notch structure 80 is a portion of the fourth radiator 14 having an electrical length that is close to or is 1/4 of the wavelength of the satellite communications band, or the notch structure 80 is a portion of the fourth radiator 14 having an electrical length that is close to or is 1/4 of the wavelength of the satellite communications band, together with the impedance tuning circuit 82. For another example, the notch structure 80 is disposed between the third radiator 13 and the fourth radiator 14, and the notch structure 80 is an L-shaped parasitic branch of the third radiator 13. For another example, the notch structure 80 is disposed between the third radiator 13 and the fourth radiator 14, and the notch structure 80 is an L-shaped parasitic branch of the fourth radiator 14. For another example, the notch structure 80 is disposed between the third radiator 13 and the second radiator 12, and the notch structure 80 is an L-shaped parasitic branch of the third radiator 13. The third antenna element 30 can be multiplexed into the notch structure 80 without affecting the operation of the third antenna element 30.

For another example, referring to fig. 16, notch structure 80 is disposed on second side 324. The notch structure 80 is an L-shaped stub or the like. The second side 324 is provided with a fourth antenna element 40, the fourth antenna element 40 including, but not limited to, an IFA antenna, a left-hand composite antenna, a monopole antenna, an L-shaped parasitic antenna, and the like. Optionally, the fourth antenna element 40 comprises a sixth radiator 43, a fourth signal source 42 and a fourth switch 41. The fourth switch 41 is electrically connected to a fourth signal source 42 and a sixth radiator 43. Notch structure 80 includes a portion of or all of the radiating branches of sixth radiator 43. The fourth signal source 42 is configured to provide a mobile communication signal to the sixth radiator 43, so that the fourth antenna unit 40 operates in a mobile communication frequency band. When the satellite is connected, the fourth switch 41 is turned off and the sixth radiator 43 of the fourth antenna element 40 acts as a notch stub 81 of the notch structure 80. In the mobile communication, the fourth switch 41 turns on the electrical connection between the fourth signal source 42 and the sixth radiator 43, and the fourth antenna unit 40 supports the mobile communication, so that the fourth antenna unit 40 is multiplexed into the notch structure 80 and the transceiving mobile communication frequency band is not affected.

Referring to fig. 21, the number of the notch structures 80 is plural, and the plurality of notch structures 80 includes at least a first notch structure 80a and a second notch structure 80b. Optionally, the first notch structure 80a is disposed on the first side 323. The second notch structure 80b is disposed on the second side 324. The first notch structure 80a and the second notch structure 80b are both resonant in the satellite communication frequency band, and can bind the floor current of the upper half part of the reference floor 500, further reduce the downward transmission current of the reference floor 500, weaken the third sub-radiation field Q3, further improve the intensity of the first sub-radiation field Q1, and further increase the upper hemispherical duty ratio.

Referring to fig. 22, fig. 22 is a schematic structural diagram of the antenna assembly 100 according to the embodiment of the application, in which the notch structure 80 is disposed at the first side 323. As can be seen from comparing fig. 6, in the antenna assembly 100 provided by the embodiment of the present application, by providing the notch structure 80 at the first side 323, the intensities of the lower portions of the third sub-radiation field Q3 and the second sub-radiation field Q2 can be weakened, the intensity of the first sub-radiation field Q1 can be further improved, and the T-shaped antenna can adjust the direction of the first sub-radiation field Q1 to be close to the side of the top edge 321, so as to further increase the upper hemisphere duty cycle, for example, increase the upper hemisphere duty cycle to more than 70%.

The satellite communication function under the head-hand conversation scene of the person is good by designing the combination of the top satellite antenna and the side satellite antenna. By designing the first antenna element 10 to be located at the top edge 321, the second antenna element 20 is located at the first side edge 323. The first switch circuit K1 and the second switch circuit K2 may be added, and the first antenna unit 10 and the second antenna unit 20 may be implemented with a pattern adjustment and frequency tuning by means of a first switch circuit K1, a second switch circuit K2, and a gate short circuit, an open circuit, and a capacitive inductor. The first antenna unit 10 and the second antenna unit 20 are connected to the first signal source 51 (including a satellite communication radio frequency module) through the switch switching circuit 60. The first antenna unit 10 and the second antenna unit 20 each include a satellite communication band, such as a transmit band: 1980-2010 MHz, receiving frequency band: 2017-2200 MHz. More switches may be added to tune the impedance of the two corresponding connection paths of the first antenna element 10, the second antenna element 20 and the switch switching circuit 60. The first antenna element 10 and the second antenna element 20 may be compatible with other frequency bands.

The present application includes, but is not limited to, the following scenarios:

When the electronic device 1000 (for example, a mobile phone) performs satellite connection, an operator holds the mobile phone with his/her hand and places a call from his/her head, and uses the first antenna unit 10 to connect with a satellite, and at this time, the switch switching circuit 60 gates the first antenna unit 10 to connect with a satellite communication radio frequency module to perform signal transmission and reception.

When the electronic device 1000 is in a hand-held communication scenario during communication, the switch switching circuit 60 continues to gate the connection between the first antenna unit 10 and the satellite communication radio frequency module for satellite signal transmission and reception. If the electronic device 1000 is in a talking scene, the performance of the electronic device is reduced after the electronic device is in contact with the human head, because the first antenna unit 10 is located at the top edge 321, and the electronic device does not support communication between the human head and the hand, the switch switching circuit 60 gates the second antenna unit 20 to connect with the satellite communication rf module for receiving and transmitting signals.

Further, in order to improve the problem that the satellite communication is affected because SAR is considered and the performance of the satellite communication band is ensured, the transmission and reception bands of the satellite communication are placed on different antennas. The second antenna unit 20 is compatible with the receiving frequency band of satellite communication: 2017-2200 MHz, the third antenna unit 30 is located on the back cover side of the mobile phone, and the forms of the third antenna unit can be PIFA antenna, patch antenna and the like, and comprise satellite communication transmitting frequency bands: 1980 to 2010MHz. When the electronic device 1000 performs satellite communication, at time t1, the switch switching circuit 60 gates the third antenna unit 30 to be connected with the satellite communication radio frequency module for signal transmission for time t2, and then the switch switching circuit 60 gates the second antenna unit 20 to be connected with the satellite communication radio frequency module for signal reception. In addition, the second antenna unit 20 and the third antenna unit 30 may also be connected to the satellite radio module through a combiner 70.

Further, the scenarios of satellite communication include, but are not limited to, the following scenarios of the first antenna unit 10, the second antenna unit 20, and the third antenna unit 30. When the electronic device 1000 performs satellite connection, an operator holds the mobile phone, uses the first antenna unit 10 to perform connection with a satellite and make a call, and at this time, the switch switching circuit 60 gates the first antenna unit 10 to connect with a satellite communication radio frequency module to perform signal transceiving.

When the electronic device 1000 is in a hand-held communication scenario, the switch switching circuit 60 is configured to switch on the first signal source 51 and the first feeding point C1, and the first antenna unit 10 receives and transmits satellite signals. In the hand-held satellite call mode, the operator holds the electronic device 1000 in his/her hand and places the electronic device away from his/her head and performs a call, in this mode, since the first antenna unit 10 and the second antenna unit 20 are both away from his/her head, and thus, no consideration is required to be given to the influence of the human head medium on the first antenna unit 10 and/or the second antenna unit 20, and in the case that the working efficiency of the first antenna unit 10 is greater than that of the second antenna unit 20, the switch switching circuit 60 is configured to conduct the electrical connection between the first feeding point C1 and the first signal source 51, and the first signal source 51 is configured to transmit and receive satellite signals through the first antenna unit 10. That is, the switch switching circuit 60 continues to gate the connection between the first antenna unit 10 and the satellite communication rf module, so as to transmit and receive signals.

If the electronic device 1000 is in a talking scene, the switch switching circuit 60 is configured to turn on the first signal source 51 and the second feeding point C2, and transmit and receive satellite signals through the second antenna unit 20. The satellite communication mode is a communication mode in which the operator holds the electronic device 1000 near the head, and in this mode, since the first antenna unit 10 is located near the head, the satellite signals are easily received or transmitted due to the influence of the head medium loading, and at this time, the second antenna unit 20 is relatively far away from the head, and the head medium loading has little or no influence. At this time, the switch switching circuit 60 is configured to electrically connect the second feeding point C2 to the first signal source 51, and the first signal source 51 is configured to transmit and receive satellite signals through the second antenna unit 20, so as to ensure that good satellite communication can be achieved even in the head-to-hand satellite communication mode of the electronic device 1000. Or the switch switching circuit 60 switches to the third antenna unit 30 for transmission and to the second antenna unit 20 for reception. Or the switch switching circuit 60 switches to the third antenna unit 30 to transmit and receive satellite signals. The second antenna element 20 and the third antenna element 30 may also be connected to the switching circuit 60 using a combiner 70.

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

Claims

1. An electronic device, comprising:

The frame comprises a top edge and a first side edge which are connected;

an antenna assembly, the antenna assembly comprising:

And the switch switching circuit is electrically connected among the first feeding point, the second feeding point and the first signal source and is configured to switch at least one of the first feeding point and the second feeding point to be electrically connected with the first signal source.

2. The electronic device of claim 1, wherein the second radiator further comprises a first connection point located between the third free end and the second ground point;

The first antenna unit further comprises a first switch circuit, one end of the first switch circuit is electrically connected with the first connection point, the other end of the first switch circuit is grounded, and the first switch circuit is used for being switched into one of short circuit grounding, open circuit, inductance grounding and capacitance grounding.

3. The electronic device of claim 2, wherein the second ground point is located on the first side.

4. The electronic device of claim 2, wherein the first signal source is further configured to provide a second excitation signal of a mobile communications band, the first signal source configured to provide the first excitation signal and the second excitation signal in a time-sharing manner.

5. The electronic device of claim 4, wherein the first antenna unit further comprises a first matching circuit electrically connected between the first feed point and the first signal source, the first matching circuit comprising a first switch and at least one first impedance tuning branch electrically connected to the first switch, the first matching circuit for adjusting a switching state of the first switch to achieve impedance matching when the first signal source provides both the first excitation signal and the second excitation signal;

The second antenna unit further comprises a second matching circuit, the second matching circuit is electrically connected between the second feeding point and the first signal source, the second matching circuit comprises a second switch and at least one second impedance tuning branch electrically connected with the second switch, and the second matching circuit is used for adjusting the switching state of the second switch so as to realize impedance matching when the first signal source provides the first excitation signal and the second excitation signal.

6. The electronic device of claim 1, wherein the fourth free end is located between the second feed point and the top edge.

7. The electronic device of claim 6, wherein the third radiator forms an IFA antenna or a LOOP antenna.

8. The electronic device of claim 4, wherein the second antenna unit further comprises a fourth radiator and a second switching circuit, the fourth radiator comprising a fifth free end, a second connection point, and a fourth ground point sequentially disposed, the fourth ground point being grounded, a second coupling gap being between the fifth free end and the fourth free end;

One end of the second switch circuit is electrically connected with the second connection point, the other end of the second switch circuit is grounded, and the second switch circuit is used for switching to one of short circuit grounding, open circuit, inductance grounding and capacitance grounding.

9. The electronic device of claim 8, wherein the antenna assembly further comprises a second signal source, the fourth radiator further comprising a third feed point, the second signal source electrically connected to the third feed point, the second signal source configured to excite the fourth radiator to form a resonant mode supporting a low frequency band when the first signal source provides the second excitation signal, and to electrically disconnect from the third feed point when the first signal source provides the first excitation signal.

10. The electronic device of claim 1, wherein the switch switching circuit is configured to turn on the first signal source and the first feed point when the electronic device is in a handheld satellite call mode, the first antenna unit transceiving satellite signals.

11. The electronic device of claim 1, wherein the switch switching circuit is configured to turn on the first signal source and the second feed point when the electronic device is in a head-to-hand satellite call mode, the second antenna element transceiving satellite signals.

12. The electronic device of claim 1, wherein the switch switching circuit is configured to turn on the first signal source with the first feed point, the second feed point, the first antenna unit transmitting satellite signals, and the second antenna unit receiving satellite signals when the electronic device is in a handheld satellite talk mode; or, when the electronic device is in the hand-held satellite communication mode, the second antenna unit transmits satellite signals, and the first antenna unit receives satellite signals.

13. The electronic device of claim 1, wherein the electronic device further comprises a back cover, the antenna assembly further comprises a third antenna unit, the bezel is surrounded on a peripheral side of the back cover, the third antenna unit comprises a fifth radiator disposed on or corresponding to the back cover, the fifth radiator comprises a fourth feed point, the switch switching circuit is further electrically connected to the fourth feed point, the switch switching circuit is configured to turn on the first signal source and the fourth feed point, the second feed point, the third antenna unit transmits satellite signals, and the second antenna unit receives satellite signals when the electronic device is in a head-to-hand satellite talk mode; or the switch switching circuit is configured to electrically connect the fourth feed point when the electronic device is in a head-to-hand satellite call mode, and the first signal source transmits and receives satellite signals in time periods.

14. The electronic device of claim 13, wherein the switch-over circuit is further electrically connected to the fifth radiator, the switch-over circuit further configured to switch the first signal source to electrically connect to the third radiator and/or the fifth radiator.

15. The electronic device of claim 13, wherein the antenna assembly further comprises a combiner comprising a transmit path, a receive path, and a combining path, one end of the transmit path electrically connected to the fifth radiator, the other end of the transmit path electrically connected to one end of the combining path, one end of the receive path electrically connected to the third radiator, the other end of the receive path electrically connected to one end of the combining path, the other end of the combining path electrically connected to the first signal source, the transmit path configured to transmit a transmit frequency band of satellite signals, and the receive path configured to transmit a receive frequency band of satellite signals.

16. The electronic device of any of claims 1-15, wherein the antenna assembly further comprises a reference floor disposed within the bezel, the bezel further comprises a second side disposed opposite the first side, the antenna assembly further comprises at least one notch structure disposed on the first side or the second side, the notch structure comprises a fifth ground point electrically connected to a current-carrying region of a floor current on the reference floor, the current-carrying region of the reference floor being in a range of 0.3-0.5 times the total length of the reference floor in a direction in which the top edge points toward the reference floor.

17. The electronic device of claim 16, wherein the switch-switching circuit is configured to turn on the first signal source and the first feed point, at least a portion of the third radiator forming the notch structure; or the third radiator and the notch structure are arranged at intervals.

18. The electronic device of claim 16, wherein an electrical length of the notch structure is 1/4 wavelength of the satellite communications band.

19. The electronic device of claim 16, wherein the at least one notch structure comprises a first notch structure and a second notch structure, the first notch structure being disposed on the first side and the second notch structure being disposed on the second side.