WO2024037126A1

WO2024037126A1 - Electronic device

Info

Publication number: WO2024037126A1
Application number: PCT/CN2023/098332
Authority: WO
Inventors: 刘池
Original assignee: Oppo广东移动通信有限公司
Priority date: 2022-08-18
Filing date: 2023-06-05
Publication date: 2024-02-22
Also published as: CN117638449A

Abstract

Disclosed in the embodiments of the present application is an electronic device, comprising a first part and a second part. The first part and the second part can be relatively folded to a closed state and can also be relatively unfolded to an open state. When the first part and the second part are in a closed state, a frame of the first part and a frame of the second part are partially or completely overlapped. The first part comprises a first antenna assembly, and the second part comprises a second antenna assembly. When the first part and the second part are closed, the first antenna assembly is configured to generate a resonance mode of an LB frequency band, and the second antenna assembly is configured to generate a resonance mode of at least two frequency bands in the LB frequency band, wherein when the first part and the second part are closed, the first antenna assembly and the second antenna assembly do not overlap.

Description

an electronic device

Cross-references to related applications

This application is filed based on a Chinese patent application with application number 202210993356.4 and a filing date of August 18, 2022, and claims the priority of the Chinese patent application. The entire content of the Chinese patent application is hereby incorporated by reference into this application in full. .

Technical field

The present application relates to antenna technology for foldable electronic devices, and in particular, to an electronic device.

Background technique

Currently, for foldable electronic devices, the relative positional relationship between the antennas will change when the electronic device is in the open state and the closed state. For example, when the electronic device is in the closed state, the two identical antennas of the electronic device will change. The antennas in the frequency band are close to each other, so that the two antennas will absorb each other's efficiency, causing more energy to be unable to be emitted, affecting the performance of the two antennas. It can be seen from this that existing foldable electronic devices have antenna efficiency Falling technical issues.

Contents of the invention

The technical solution of this application is implemented as follows:

An embodiment of the present application provides an electronic device, including: a first part and a second part. The first part and the second part can be relatively folded to a closed state, and can also be relatively unfolded to an open state. The first part and the When the second part is in a closed state, the frame of the first part and the frame of the second part overlap partially or completely;

the first portion includes a first antenna component and the second portion includes a second antenna component;

When the first part and the second part are closed, the first antenna component is configured to generate a resonant mode of a low frequency (Lower Band, LB) frequency band, and the second antenna component is configured to generate at least a resonant mode in the LB frequency band. Resonant modes of two frequency bands; wherein the first antenna component and the second antenna component do not overlap when the first part and the second part are closed.

Description of drawings

Figure 1 is a schematic structural diagram of an optional electronic device provided by an embodiment of the present application;

Figure 2 is a schematic diagram of an antenna of an electronic device in the related art;

Figure 3a is a schematic structural diagram of Example 1 of an optional second antenna component provided by the embodiment of the present application;

Figure 3b is a schematic structural diagram of Example 2 of an optional second antenna component provided by the embodiment of the present application;

Figure 4 is a schematic structural diagram of an example of an optional tuning switch 2 provided by the embodiment of the present application;

Figure 5 is a schematic diagram 1 of the S-parameter curve of an optional second antenna component provided by an embodiment of the present application;

Figure 6 is a schematic diagram 2 of the S-parameter curve of an optional second antenna component provided by an embodiment of the present application;

Figure 7 is a schematic diagram three of the S-parameter curve of an optional second antenna component provided by an embodiment of the present application;

Figure 8 is a schematic diagram of the antenna efficiency of an optional second antenna component provided by an embodiment of the present application;

FIG. 9 is a schematic structural diagram of Example 3 of an optional second antenna component provided by the embodiment of the present application.

Detailed ways

When the first part and the second part are closed, the first antenna component is configured to generate a resonant mode of the LB frequency band, and the second antenna component is configured to generate at least two resonant modes of the LB frequency band; wherein , when the first part and the second part are closed, the first antenna component and the second antenna component do not overlap.

In an optional embodiment, the second antenna assembly includes a first antenna unit and a second antenna unit, the first antenna unit includes a first radiator, and the second antenna unit includes a second radiator. , a first gap is formed between one end of the first radiator and one end of the second radiator; wherein,

The first gap is configured to couple between the first radiator and the second radiator;

The second antenna component is configured to generate resonant modes of at least two frequency bands of the LB frequency band under the coupling effect of the first radiator and the second radiator.

In an optional embodiment, the first radiator includes: a first ground end, a first coupling end and a first feed end; the second radiator includes: a second coupling end, a second feed end An electrical terminal and a second ground terminal, the first coupling terminal and the second coupling terminal forming the first gap; wherein,

The length of the radiator between the second coupling end and the second ground end is greater than the length of the radiator between the first ground end and the first coupling end.

In an optional embodiment, the first antenna unit further includes: a first signal source and a first tuning circuit; wherein the first signal source is connected to one end of the first tuning circuit, and the first The other end of a tuning circuit is connected to the first feed end;

The second antenna unit further includes: a second signal source and a second tuning circuit; wherein the second signal source is connected to the second feed end, and one end of the second tuning circuit is connected to the second At a first position on the radiator, the other end of the second tuning circuit is grounded, and the first position is between the second coupling end and the second feed end;

The first excitation signal generated by the first signal source is fed into the first radiator through the first feeding end after being tuned by the first tuning circuit and the second tuning circuit. and the second radiator to excite the first radiator and the second radiator to generate a first resonant mode; wherein the first resonant mode is a resonant mode in the MHB frequency band;

The second excitation signal generated by the second signal source, after being tuned by the first tuning circuit and the second tuning circuit, Feeding into the first radiator and the second radiator through the second feed end to excite the first radiator and the second radiator to generate a second resonance mode; wherein, The second resonance mode is the resonance mode of at least two frequency bands in the LB frequency band.

In an optional embodiment, the first resonant mode includes: a 3/4 wavelength mode from the first ground terminal to the first coupling terminal, and a 3/4 wavelength mode from the second coupling terminal to the first coupling terminal. 1/4 wavelength mode at position;

The second resonance mode includes: a 1/4 wavelength mode from the first ground terminal to the first coupling terminal, and a 1/4 wavelength mode from the second coupling terminal to the second ground terminal.

In an optional embodiment, the first signal source is connected to a radio frequency receiving circuit corresponding to frequency bands in the MHB frequency band except the target frequency band.

In an optional embodiment, the first radiator includes: a third ground end and a third coupling end; the second radiator includes: a fourth coupling end, a third feed end, a fourth feed end A first gap is formed between the electrical terminal and the fourth ground terminal, the third coupling terminal and the fourth coupling terminal; wherein,

The length of the radiator between the fourth coupling end and the fourth ground end is greater than the length of the radiator between the third ground end and the third coupling end.

In an optional embodiment, the first antenna unit further includes: a third tuning circuit, one end of the third tuning circuit is connected to the second position of the first radiator, and the third tuning circuit The other end of the circuit is grounded; wherein the second position is located between the third coupling end and the third ground end;

The second antenna unit also includes: a fourth tuning circuit, a third signal source and a fourth signal source; wherein one end of the fourth tuning circuit is connected to the third feed end, and the fourth tuning circuit has The other end is connected to the third signal source, and the fourth signal source is connected to the fourth feed end;

The third excitation signal generated by the third signal source is fed into the first radiator through the third feeding end after being tuned by the third tuning circuit and the fourth tuning circuit. and the second radiator to excite the first radiator and the second radiator to generate a first resonant mode; wherein the first resonant mode is a resonant mode in the MHB frequency band;

The fourth excitation signal generated by the fourth signal source is tuned by the third tuning circuit and the fourth tuning circuit, and then fed into the first radiator and the first radiator through the fourth feeding end. The second radiator is used to excite the first radiator and the second radiator to generate a second resonant mode; wherein the second resonant mode is the resonant mode of at least two frequency bands in the LB frequency band. state.

In an optional embodiment, the third feeding end and the fourth feeding end are located between the fourth coupling end and the fourth grounding end, and the third feeding end is close to The fourth coupling end and the fourth feeding end are close to the fourth ground end.

In an optional embodiment, the first resonant mode includes: a 3/4 wavelength mode from the third ground terminal to the third coupling terminal, the fourth coupling terminal to the third 1/4 wavelength mode at the feed end;

The second resonance mode includes: a 1/4 wavelength mode from the third ground terminal to the third coupling terminal, and a 1/4 wavelength mode from the fourth coupling terminal to the fourth ground terminal.

In an optional embodiment, the third signal source is connected to a radio frequency receiving circuit corresponding to frequency bands in the MHB frequency band except the target frequency band.

In an optional embodiment, the first tuning circuit of the first antenna unit, the second tuning circuit of the first antenna unit The structures of the circuit, the third tuning circuit of the second antenna unit and the fourth tuning circuit of the second antenna unit are the same; wherein, the first tuning circuit includes:

A first switch, a first matching circuit, a second matching circuit, a third matching circuit and a fourth matching circuit; wherein the control end of the first switch forms one end of the first tuning circuit, and the control end of the first switch forms one end of the first tuning circuit. The first end is connected to one end of the first matching circuit, the other end of the first matching circuit forms the other end of the first tuning circuit, and the second end of the first switch is connected to the second matching circuit. One end, the other end of the second matching circuit is grounded, the third end of the first switch is connected to the third matching circuit, the other end of the third matching circuit is grounded, and the fourth end of the first switch The fourth matching circuit is connected, and the other end of the fourth matching circuit is grounded.

In an optional embodiment, the second antenna component is placed in the bottom frame of the second part of the electronic device when it is placed vertically and in an open state, and the first antenna component is placed on the The electronic device is placed vertically in the side frame of the first part.

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application.

An embodiment of the present application provides an electronic device. Figure 1 is a schematic structural diagram of an optional electronic device provided by an embodiment of the present application. As shown in Figure 1 , the electronic device 100 at least includes:

The first part 11 and the second part 12 can be relatively folded to a closed state, and can also be relatively unfolded to an open state. When the first part 11 and the second part 12 are in a closed state, the frame of the first part 11 Overlap partially or completely with the border of the second part 12;

The first part 11 includes a first antenna component 111, and the second part 12 includes a second antenna component 121;

When the first part 11 and the second part 12 are closed, the first antenna component 111 is configured to generate a resonant mode of the LB frequency band, and the second antenna component 121 is configured to generate a resonant mode of at least two frequency bands in the LB frequency band.

When the first part 11 and the second part 12 are closed, the first antenna component 111 and the second antenna component 121 do not overlap.

For foldable electronic devices, Figure 2 is a schematic diagram of an antenna of an electronic device in the related art. As shown in Figure 2, it is a back view of the electronic device, including antennas (Ant, Antenna) 0, Ant1 and Ant2, and they are all Low-frequency antennas, of course, these three antennas can not only have low-frequency frequencies, but also include other frequency bands.

Among them, when the electronic device is a foldable electronic device, Ant0 and Ant2 are both located in the upper half of the electronic device, which can be called the upper antenna, and Ant1 is located in the lower half of the electronic device, which can be called the lower antenna. When the device is folded in half, that is, in the folded state, the sides of Ant0 and Ant1 are folded together. Since they are both low-frequency and work at the same frequency, Ant0 and Ant1 will absorb each other's efficiency, resulting in more energy being unable to be emitted. , the signal reception capability also suffers, which leads to a decrease in antenna efficiency.

In order to solve the above technical problem of the decrease in antenna efficiency caused by folding the foldable electronic device in half, an embodiment of the present application provides an electronic device 100. The electronic device 100 is an electronic device with a folding function. In order to realize the folding function, the electronic device 100 is provided. The device 100 includes: a first part 11 and a second part 12, wherein the first part 11 and the second part 12 can be relatively folded to a closed state, and the first part 11 and the second part 12 can also be relatively unfolded to an open state. In addition, the first part 11 and the second part 12 can be relatively unfolded to an open state. When the part 11 and the second part 12 are in a closed state, the frame of the first part 11 and the frame of the second part 12 may overlap partially or completely.

Based on the above foldable electronic device 100, in order to improve the antenna efficiency of the low-frequency antenna, a first part 11 is provided with A first antenna component 111 is provided, a second antenna component 121 is provided on the second part 12, and when the first part 11 and the second part 12 are closed, the first antenna component 111 and the second antenna component 121 do not overlap, In this way, it is ensured that the two do not interfere with each other. On this basis, when the first part 11 and the second part 12 are closed, the first antenna component 111 generates the resonance mode of the LB frequency band, so that the first antenna component 111 covers the LB frequency band. The second antenna component 121 generates resonant modes of at least two frequency bands of the LB frequency band, so that the second antenna component 121 covers at least two frequency bands of the LB frequency band, that is, while ensuring that the first antenna component 111 and the second antenna component 121 Without mutual interference, the coverage range and antenna efficiency of the second antenna component 121 can also be ensured.

Among them, the above-mentioned LB frequency band can include B5, B8, B28 and G900.

It should be noted that in addition to covering the LB frequency band, the above-mentioned first antenna component 111 can also cover other frequency bands. Here, the embodiment of the present application does not specifically limit this; the above-mentioned second antenna component 121 can not only cover at least two frequency bands in the LB frequency band. , and may also cover other frequency bands. Here, the embodiment of the present application does not specifically limit this.

In addition, the electronic device 100 in the embodiment of the present application not only includes the first antenna component 111 and the second antenna component 121, but may also include other antenna components, which is not specifically limited in the embodiment of the present application.

In order to achieve coverage of at least two frequency bands of the LB frequency band by the second antenna component 121 in the closed state of the first part 11 and the second part 12, in an optional embodiment, the second antenna component 121 includes a first Antenna unit and second antenna unit, the first antenna unit includes a first radiator, the second antenna unit includes a second radiator, a first gap is formed between one end of the first radiator and one end of the second radiator; wherein,

The second antenna component 121 is configured to generate resonant modes of at least two frequency bands of the LB band under the coupling effect of the first radiator and the second radiator.

It can be understood that the above-mentioned second antenna assembly 121 includes two antenna units, one is the first antenna unit and the other is the second antenna unit, and each antenna unit includes a radiator, that is, the first antenna unit includes the first radiator. body, the second antenna unit includes a second radiator, and the second antenna component 121 is coupled to each other through the first gap between the first radiator and the second radiator, thereby achieving the generation of resonant modes of at least two frequency bands in the LB band. state.

For the above-mentioned second antenna component 121, the following at least two methods can be used to achieve coverage of at least two frequency bands of the LB band: one is to dispose the two feed ends on the two radiators respectively, and the other is to One is to place two feed terminals on one of the radiators.

Wherein, for arranging two feed terminals on two radiators respectively, in an optional embodiment, the first radiator includes: a first ground terminal, a first coupling terminal and a first feed terminal. end, the second radiator includes: a second coupling end, a second feed end and a second ground end, the first coupling end and the second coupling end form the first gap; wherein,

That is to say, the first radiator is provided with a first ground terminal, a first coupling terminal and a first feed terminal, and the second radiator is provided with a second coupling terminal, a second feed terminal and a second ground terminal. end, and the first radiator and the second radiator are coupled to each other through the first gap formed between the first coupling end and the second coupling end.

In order to achieve coverage of at least two frequency bands in the LB frequency band, here, the length of the radiator between the second coupling end and the second ground end is The length is greater than the length of the radiator between the first ground terminal and the first coupling terminal. Only with this setting can the double resonance of the second antenna unit be ensured.

Further, in order to achieve coverage of at least two frequency bands in the LB band, in an optional embodiment, the first antenna unit further includes: a first signal source and a first tuning circuit; wherein the first signal source is connected to One end of the first tuning circuit and the other end of the first tuning circuit are connected to the first feed end;

The second antenna unit also includes: a second signal source and a second tuning circuit; wherein the second signal source is connected to the second feed end, and one end of the second tuning circuit is connected to the first position on the second radiator. , the other end of the second tuning circuit is grounded, and the first position is between the second coupling end and the second feed end;

The first excitation signal generated by the first signal source is, after being tuned by the first tuning circuit and the second tuning circuit, fed into the first radiator and the second radiator through the first feeding end to excite the first The radiator and the second radiator generate a first resonance mode; wherein the first resonance mode is a resonance mode in the middle high frequency (Middle High Band, MHB) frequency band;

The second excitation signal generated by the second signal source is tuned by the first tuning circuit and the second tuning circuit, and then fed into the first radiator and the second radiator through the second feeding end to excite the first radiation. The body and the second radiator generate a second resonance mode; wherein the second resonance mode is the resonance mode of at least two frequency bands in the LB frequency band.

It can be understood that the first feeding end is connected to the first signal source through the first tuning circuit, the second tuning circuit is connected at the first position, and the second signal source is directly connected to the second feeding end, so that the first The signal source provides a first excitation signal, and the first tuning circuit and the second tuning circuit tune the first excitation signal so as to be fed into the first radiator and the second radiator through the first feeding end to excite the first radiation. The body and the second radiator generate a resonant mode in the MHB frequency band, so that the second antenna component 121 can generate a resonant mode in the MHB frequency band.

Furthermore, the second signal source provides a second excitation signal, and the first tuning circuit and the second tuning circuit tune the second excitation signal, thereby feeding it into the first radiator and the second radiator through the second feeding end, so as to Exciting the first radiator and the second radiator generates resonant modes of at least two frequency bands in the LB frequency band, so that the second antenna component 121 can generate resonant modes of at least two frequency bands in the LB frequency band.

That is to say, through the tuning effect of the first tuning circuit and the second tuning circuit, the second antenna component is able to generate the resonant mode of the MHB frequency band and the resonant mode of at least two frequency bands in the LB frequency band.

Among them, the MHB frequency band can include N41, B1, B3, B40 and B41.

In addition, regarding the structure of the second antenna component in which the two feed terminals are respectively disposed on the two radiators, in an optional embodiment, the first resonant mode includes: the first ground terminal to The 3/4 wavelength mode at the first coupling end, and the 1/4 wavelength mode at the second coupling end to the first position;

The second resonant mode includes: a 1/4 wavelength mode from the first ground terminal to the first coupling terminal, and a 1/4 wavelength mode from the second coupling terminal to the second ground terminal.

That is to say, the antenna structure of the second antenna assembly 121 is fed into the first radiator and the second radiator through the first feeding end to excite the first radiator and the second radiator to generate two resonant modes. , respectively, are the 3/4 wavelength mode from the first ground end to the first coupling end, and the 1/4 wavelength mode from the second coupling end to the first position. These two resonant modes are the two frequency bands of the MHB frequency band. Resonant mode.

It is fed into the first radiator and the second radiator through the second feeding end to excite the first radiator and the second radiator to produce two resonant modes, which are 1/1 of the distance from the first ground end to the first coupling end respectively. 4-wavelength mode, 1/4-wavelength mode from the second coupling end to the second ground end. These two resonant modes are the resonant modes of the two frequency bands of the LB frequency band.

In addition, in practical applications, in an optional embodiment, the first signal source is connected to a radio frequency receiving circuit corresponding to frequency bands in the MHB frequency band except the target frequency band.

Among them, the above-mentioned target frequency band is N41, that is to say, for the MHB frequency band, for frequency bands other than the N41 frequency band, the first signal source is connected to the radio frequency receiving circuit corresponding to the frequency band.

Since it is difficult to use cables in foldable electronic equipment, flexible printed circuit boards (FPC) are usually used, which results in a large insertion loss of the second antenna component 121, especially for antennas in the MHB band. So here, for the antenna in the MHB frequency band, it is only used for the receiving link. That is, in the above antenna structure, the first signal source is connected to the radio frequency receiving circuit corresponding to the MUB frequency band, so that the antenna in the MHB frequency band is only used for the receiving link. .

For arranging two feed terminals on one radiator, in an optional embodiment, the first radiator includes: a third ground terminal and a third coupling terminal; the second radiator includes: a fourth A first gap is formed between the coupling end, the third feeding end, the fourth feeding end and the fourth grounding end, and the third coupling end and the fourth coupling end; wherein,

That is to say, a third ground terminal and a third coupling terminal are provided on the first radiator, and a fourth coupling terminal, a third feed terminal, a fourth feed terminal and a fourth ground terminal are provided on the second radiator, Furthermore, the first gap is formed between the third coupling end and the fourth coupling end so that the first radiator and the second radiator are coupled to each other.

In order to achieve coverage of at least two frequency bands in the LB band, here, the length of the radiator between the fourth coupling end and the fourth ground end is greater than the length of the radiator between the third ground end and the third coupling end. It is set like this, Only then can the double resonance of the second antenna unit be guaranteed.

Further, in order to achieve coverage of at least two frequency bands in the LB band, in an optional embodiment, the first antenna unit further includes: a third tuning circuit, one end of the third tuning circuit is connected to the first radiator At the second position, the other end of the third tuning circuit is grounded; wherein, the second position is between the third coupling end and the third ground end;

The second antenna unit also includes: a fourth tuning circuit, a third signal source and a fourth signal source; wherein one end of the fourth tuning circuit is connected to the third feed end, and the other end of the fourth tuning circuit is connected to the third signal source, The fourth signal source is connected to the fourth feed terminal;

The third excitation signal generated by the third signal source is, after being tuned by the third tuning circuit and the fourth tuning circuit, fed into the first radiator and the second radiator through the third feeding end to excite the first The radiator and the second radiator generate a first resonance mode; wherein the first resonance mode is a resonance mode in the MHB frequency band;

The fourth excitation signal generated by the fourth signal source is, after being tuned by the third tuning circuit and the fourth tuning circuit, fed into the first radiator and the second radiator through the fourth feeding end to excite the first The radiator and the second radiator generate a second resonance mode; wherein the second resonance mode is the resonance mode of at least two frequency bands in the LB frequency band.

It can be understood that the third tuning circuit is connected to the second position, the third feed terminal is connected to the third signal source through the fourth tuning circuit, and the fourth signal source is directly connected to the fourth feed terminal. In this way, the third signal The source provides a third excitation signal, the third tuning circuit and the fourth tuning circuit tune the third excitation signal, and then feeds it into the first radiator and the second radiator through the third feeding end to excite the third excitation signal. Exciting the first radiator and the second radiator can generate a resonant mode in the MHB frequency band, so that the second antenna component can generate a resonant mode in the MHB frequency band.

Moreover, the fourth signal source provides a fourth excitation signal, the third tuning circuit and the fourth tuning circuit tune the fourth excitation signal, and then feeds it into the first radiator and the second radiator through the fourth feeding end, so as to Exciting the first radiator and the second radiator can generate resonant modes with frequency bands of at least two frequency bands in the LB frequency band, so that the second antenna component can generate resonant modes with at least two frequency bands in the LB frequency band.

That is to say, through the tuning effect of the above-mentioned third tuning circuit and the fourth tuning circuit, the second antenna component is able to generate the resonant mode of the MHB frequency band and the resonant mode of at least two frequency bands in the LB frequency band.

Among them, in the structure of the second antenna component 121, the third feeding end and the fourth feeding end are located between the fourth coupling end and the fourth grounding end, the third feeding end is close to the fourth coupling end, and the fourth feeding end is close to the fourth coupling end. The feed terminal is close to the fourth ground terminal.

In addition, regarding the structure of the second antenna component 121 in which the two feed terminals are disposed on a radiator, in an optional embodiment, the first resonant mode includes: the third ground terminal to the third ground terminal. 3/4 wavelength mode at the third coupling end, 1/4 wavelength mode from the fourth coupling end to the third feed end;

The second resonant mode includes: a 1/4 wavelength mode from the third ground terminal to the third coupling terminal, and a 1/4 wavelength mode from the fourth coupling terminal to the fourth ground terminal.

That is to say, the antenna structure of the second antenna assembly 121 is fed into the first radiator and the second radiator through the third feeding end to excite the first radiator and the second radiator to generate two resonant modes. , respectively, are the 3/4 wavelength mode from the third grounding end to the third coupling end, and the 1/4 wavelength mode from the fourth coupling end to the third feed end. These two resonant modes are two in the MHB frequency band. The resonant mode of the frequency band.

It is fed into the first radiator and the second radiator through the fourth feed terminal to excite the first radiator and the second radiator to produce two resonant modes, which are 1/1 of the third ground terminal to the third coupling terminal respectively. 4-wavelength mode, 1/4-wavelength mode from the fourth coupling end to the fourth ground end. These two resonant modes are the resonant modes of the two frequency bands of the LB frequency band.

In practical applications, in an optional embodiment, the third signal source is connected to a radio frequency receiving circuit corresponding to frequency bands in the MHB frequency band except the target frequency band.

Since it is difficult to use cables in foldable electronic equipment, FPC is usually used, which results in a larger insertion loss of the second antenna component, especially for MHB band antennas. Therefore, here, for MHB band antennas, only In the receiving link, that is, in the above antenna structure, the third signal source is connected to the radio frequency receiving circuit corresponding to the MUB frequency band, so that the antenna in the MHB frequency band is only used for the receiving link.

Regarding the above-mentioned first tuning circuit, second tuning circuit, third tuning circuit and fourth tuning circuit, in an optional embodiment, the first tuning circuit, first antenna unit 11 of the first antenna unit 11 The structures of the second tuning circuit, the third tuning circuit of the second antenna unit 12 and the fourth tuning circuit of the second antenna unit 12 are the same; wherein, the first tuning circuit includes:

A first switch, a first matching circuit, a second matching circuit, a third matching circuit and a fourth matching circuit; wherein the control end of the first switch forms one end of the first tuning circuit, and the first end of the first switch is connected to the first One end of the matching circuit and the other end of the first matching circuit form the other end of the first tuning circuit. The second end of the first switch is connected to one end of the second matching circuit. The other end of the second matching circuit One end is connected to ground, the third end of the first switch is connected to the third matching circuit, the other end of the third matching circuit is connected to ground, the fourth end of the first switch is connected to the fourth matching circuit, and the other end of the fourth matching circuit is connected to ground.

It can be understood that the circuit structures of the above-mentioned first tuning circuit, second tuning circuit, third tuning circuit and fourth tuning circuit are the same, specifically including one switch and four matching circuits, wherein the switch of the tuning circuit can The tuning circuit is divided into four branches. The first branch is the branch formed when the control end of the first switch is connected to one end of the first matching circuit. The second branch is the control end of the first switch connected to the second end. The branch is formed when one end of the matching circuit is connected, the third branch is formed when the control end of the first switch is connected to one end of the third matching circuit, and the fourth branch is formed when the control end of the first switch is connected to the fourth A branch formed when one end of a circuit is matched.

Wherein, when the first tuning circuit and the second tuning circuit are tuning the first excitation signal and the second excitation signal, they can control the control end of the first switch, so that the first tuning circuit and the second tuning circuit are tuned to achieve the third The purpose of the second antenna assembly is to cover at least two frequency bands of the MHB frequency band and the LB frequency band. Similarly, the third tuning circuit is similar to the fourth tuning circuit, and will not be described again here.

In addition, in an optional embodiment, the second antenna component 121 is placed in the bottom frame of the second part 12 when the electronic device 100 is placed vertically and in the open state, and the first antenna component 111 is placed on the electronic device 100 In the side frame of the first part 11 when placed vertically.

It can be understood that in the electronic device 100, usually, when the electronic device 100 is placed vertically, the bottom of the electronic device 100 is a strong electric field area, so the low-frequency antenna is usually placed there, that is, the second antenna assembly 121 is placed on the electronic device. 100 is placed vertically and in the bottom frame of the second part 12 in the open state. In order to prevent the first antenna component 111 and the second antenna component 121 from overlapping in the closed state, the first antenna component 111 is placed vertically on the electronic device 100. When placed upright in the side frame of the first part 11.

In this way, when the first part 11 and the second part 12 are closed, the first antenna component 111 and the second antenna component 121 do not overlap, and the second antenna component 121 is located in a strong electric field area, thereby improving the antenna efficiency of the low-frequency antenna.

The electronic device described in one or more of the above embodiments will be described below with examples.

Figure 3a is a schematic structural diagram of Example 1 of an optional second antenna component provided by the embodiment of the present application. As shown in Figure 3a, the electronic device includes a first part and a second part. On the bottom of the second part of the electronic device A second antenna component is provided on the frame, and the second antenna component is divided into radiator ab and radiator ce; the second antenna component includes ground terminal a, MHB feed (Feed) + tuning switch 2, coupling terminal b, coupling terminal c , a gap is formed between tuning switch 1d, LB Feed, ground section e, coupling terminal b and coupling terminal c.

Typically, a Universal Serial Bus (USB) interface is provided in the middle of the bottom frame of an electronic device. Tuning switch 1 is placed on the right side of the USB interface, and MHB Feed and tuning switch 2 are placed on the left side of the USB interface. Among them, The length of ce is greater than ab.

It should be noted that, in addition to the structure of Figure 3a mentioned above, the structure of Figure 3b can also be used to implement the second antenna component. Figure 3b is a schematic structural diagram of Example 2 of an optional second antenna component provided by the embodiment of the present application. , as shown in Figure 3b, swap the positions of radiator ab and radiator ce. Since the focus of this example is the low-frequency dual-resonance second antenna component on the bottom frame, the side is less used, and the layout can be mutual. reversed.

Figure 4 is a schematic structural diagram of an example of an optional tuning switch 2 provided by the embodiment of the present application. As shown in Figure 4, the tuning switch 2 includes a single-pole four-throw switch SP4T, a matching circuit M1, a matching circuit M2, and a matching circuit M3. and matching circuit M4, SP4T It includes switch SW1, switch SW2, switch SW3 and switch SW4. SW1 is connected to the point between the low end a and the coupling end b and one end of M1. The other end of M1 is connected to the MHB Feed. SW2 is connected between the low end a and the coupling end. The point between b and one end of M2, the other end of M2 is grounded, SW3 is connected between the point between the low end a and the coupling end b and one end of M3, the other end of M3 is grounded, SW4 is connected between the low end a and the coupling end The point between b is connected to one end of M4, and the other end of M4 is grounded.

In addition, as shown in Figure 4, one end of the switch SW1, switch SW2, switch SW3 and switch SW4 connected to the matching circuit is also connected to the ground through a switch, which can pass a transient voltage suppression diode (Transient Voltage Suppressor, ESD) (including ESD1, ESD2, ESD3 and ESD4) are implemented, thus forming the RF1 branch, RF2 branch, RF3 branch and RF1 branch.

That is to say, MHB Feed is fed to the radiator ab and radiator ce through one branch of the tuning switch 2, and the other branches are connected to the matching circuit for tuning.

Among them, when SW1 is closed, MHB feeds power, and other switches can be turned on to match the MHB.

If only LB is working, then SW1 is open. At this time, switch SW2, switch SW3 and switch SW4 can be used to tune LB. The main purpose is to control the equivalent length between ab in Figure 3a. Tuning switch 1 is the same as the tuning switch. 2 The same structure, using conventional tuning switch usage, connected to the matching circuit, for LB, the main purpose is to control the equivalent length between ce.

In this way, there are two modes for LB, which can produce double resonance; Figure 5 is a schematic diagram 1 of the S-parameter curve of an optional second antenna component provided by the embodiment of the present application. As shown in Figure 5, For the N28 frequency band, it can have good coverage. It needs to be emphasized that the length between ce produces the first resonance, and the length between ab produces the second resonance. The second half of the ab resonance must be set outside the band. , the main reason is that it has a differential mode component and its efficiency is lower than the common mode efficiency.

Because there are two resonances covering it, its bandwidth is much wider than that of ordinary antennas. And because it is relatively centered, it is not easy to hold with human hands, and the handheld performance is better.

Figure 6 is a second schematic diagram of the S-parameter curve of an optional second antenna component provided by the embodiment of the present application. As shown in Figure 6, through the matching of tuning switch 1 and tuning switch 2, the LB can be easily tuned. It can cover the B5 frequency band better.

For MHB, Figure 7 is a schematic diagram three of the S-parameter curve of an optional second antenna component provided by the embodiment of the present application. As shown in Figure 7, through the cooperative tuning of tuning switch 1 and tuning switch 2, it is possible to MHB performs better tuning. The solid line represents the B3+B41 frequency band, and the dotted line represents the B1+Package 1 frequency band. It should be noted that the tuning switch 1 and the MHB feed RF1 branch need to be closed. At the same time, the RF2, RF3 and RF4 branches are also available. respectively closed or open, tune the MHB together.

Based on the above-mentioned FIG. 7 , FIG. 8 is a schematic diagram of the antenna efficiency of an optional second antenna component provided by an embodiment of the present application. As shown in FIG. 8 , MHB obtains better antenna efficiency.

In addition to the structures of Figure 3a and Figure 3b mentioned above, the structure of Figure 9 can also be used to implement the second antenna component. Figure 9 is a schematic structural diagram of Example 3 of an optional second antenna component provided by the embodiment of the present application, such as As shown in Figure 9, MHB Feed is also flexible. For example, it can be simulated together with tuning switch 1, or more tuning switches can be added to the frame or feeder path to further facilitate tuning.

That is to say, in this example, by adjusting the layout of the lower antenna, double branches can be used to generate double resonance at the bottom of the mobile phone, and a wide bandwidth can be obtained, and the strong electric field area is in the middle area of the bottom of the mobile phone. In the folded state, it is with the upper antenna. The low-frequency antennas do not overlap, so they have less influence on each other. Since the MHB transmission loss of the lower antenna of the folding machine is large, the lower antenna focuses on maintaining low frequencies. In addition to the N41 frequency band, the lower antenna has a transmit link (TX), and the lower MHB antenna is only used for reception. link(RX).

Table 1 shows the antenna efficiency of electronic equipment in related technologies:

Table 1

Table 2 shows the antenna efficiency of the electronic device in this example:

Table 2

This example involves an antenna that can support low-frequency dual waves. The low-frequency antenna is mainly at the bottom of the mobile phone, especially in the strong electric field area. It can be seen from Table 1 and Table 2 that when the cover is closed, , whether it is the low frequency of the upper antenna or the lower antenna, the amplitude of the low frequency drop is about 4dB-5dB when the cover is closed compared to the open state, and for the lower antenna in this example, the low frequency drop of the upper and lower antennas can be controlled within 4dB, especially for this example For the lower antenna, the drop is about 1.5dB.

This example also gives the MHB solution. For folding machines, since it is difficult to use cable for folding mobile phones, FPC transmission is used, and the insertion loss is large. Especially for MHB, the insertion loss is usually above 2dB. For this reason, the lower antenna The focus is on low-frequency antennas. MHB usually only does RX. The MHB in this example can also achieve better performance.

An embodiment of the present application provides an electronic device, including: a first part and a second part. The first part and the second part can be relatively folded to a closed state, and can also be relatively unfolded to an open state. The first part and the second part are in a closed state. When the first part and the second part are closed, the frame of the first part partially or completely overlaps, the first part includes the first antenna component, and the second part includes the second antenna component. When the first part and the second part are closed, the first antenna component is configured To generate a resonant mode of the LB frequency band, the second antenna component is configured to generate a resonant mode of at least two frequency bands in the LB frequency band, wherein the first antenna component is different from the second antenna component when the first part and the second part are closed. Overlap; that is to say, in the embodiment of the present application, when the first part of the electronic device and the second part of the electronic device are closed and the first antenna component and the second antenna component do not overlap, the first antenna of the first part When the component generates the resonance mode of the LB frequency band, the second antenna component on the second part also generates the resonance mode of the LB frequency band, and the second antenna component generates the resonance mode of at least two frequency bands of the LB frequency band. In this way, when closed When the two antenna components do not overlap, the second antenna component can still generate the resonant modes of at least two frequency bands of the LB band, that is, the first antenna component and the second antenna component are guaranteed to have no interaction with each other. The coverage and performance of the second antenna assembly thereby improves the performance of the low-frequency antenna of the electronic device.

Wherein, the computer-readable storage medium may be a ferromagnetic random access memory (ferromagnetic random access memory, FRAM), read-only memory (Read Only Memory, ROM), programmable read-only memory (Programmable Read-Only Memory, PROM), erasable programmable read-only memory (Erasable Programmable Read-Only Memory, EPROM), electrically Erasing Electrically Erasable Programmable Read-Only Memory (EEPROM), Flash Memory, Magnetic Surface Memory, Optical Disc, or Compact Disc Read-Only Memory (CD-ROM), etc. memory.

Those skilled in the art will understand that embodiments of the present application may be provided as methods, systems, or computer program products. Accordingly, the present application may take the form of a hardware embodiment, a software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product implemented on one or more computer-usable storage media (including, but not limited to, magnetic disk storage and optical storage, etc.) embodying computer-usable program code therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each process and/or block in the flowchart illustrations and/or block diagrams, and combinations of processes and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine, such that the instructions executed by the processor of the computer or other programmable data processing device produce a use A device for realizing the functions specified in one process or multiple processes of the flowchart and/or one block or multiple blocks of the block diagram.

These computer program instructions may also be stored in a computer-readable memory that causes a computer or other programmable data processing apparatus to operate in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including the instruction means, the instructions The device implements the functions specified in a process or processes of the flowchart and/or a block or blocks of the block diagram.

These computer program instructions may also be loaded onto a computer or other programmable data processing device, causing a series of operating steps to be performed on the computer or other programmable device to produce computer-implemented processing, thereby executing on the computer or other programmable device. Instructions provide steps for implementing the functions specified in a process or processes of a flowchart diagram and/or a block or blocks of a block diagram.

The above descriptions are only preferred embodiments of the present application and are not intended to limit the protection scope of the present application.

Industrial applicability

In the electronic device in the embodiment of the present application, when the first part of the electronic device and the second part of the electronic device are closed and the first antenna component and the second antenna component do not overlap, the first antenna component of the first part generates LB frequency band In the resonant mode, the second antenna component on the second part also generates the resonant mode of the LB frequency band, and the second antenna component generates the resonant mode of at least two frequency bands of the LB frequency band. In this way, in the closed state, the two antennas When the components do not overlap, the second antenna component can still generate resonant modes of at least two frequency bands of the LB band, that is, the coverage of the second antenna component is guaranteed while eliminating the interaction between the first antenna component and the second antenna component. range and performance, thereby improving the performance of low-frequency antennas for electronic devices.

Claims

An electronic device includes: a first part and a second part, the first part and the second part can be relatively folded to a closed state, and can also be relatively unfolded to an open state, the first part and the second part are in In the closed state, the frame of the first part and the frame of the second part overlap partially or completely;

The first portion includes a first antenna component configured to generate a resonant mode in the LB frequency band, and the second portion includes a second antenna component configured to generate a resonant mode in the LB frequency band. at least two resonances;

When the first part and the second part are closed, the first antenna component and the second antenna component do not overlap.
The electronic device of claim 1, wherein the second antenna assembly includes a first antenna unit and a second antenna unit, the first antenna unit includes a first radiator, and the second antenna unit includes a second antenna unit. Radiator, a first gap is formed between one end of the first radiator and one end of the second radiator; wherein,

The first gap is configured to couple between the first radiator and the second radiator;

The second antenna component is configured to generate resonant modes of at least two frequency bands of the LB frequency band under the coupling effect of the first radiator and the second radiator.
The electronic device according to claim 2, wherein the first radiator includes: a first ground terminal, a first coupling terminal and a first feeding terminal; the second radiator includes: a second coupling terminal, a first feeding terminal; Two feed terminals and a second ground terminal, the first coupling terminal and the second coupling terminal form the first gap; wherein,

The length of the radiator between the second coupling end and the second ground end is greater than the length of the radiator between the first ground end and the first coupling end.
The electronic device according to claim 3, wherein the first antenna unit further includes: a first signal source and a first tuning circuit; wherein the first signal source is connected to one end of the first tuning circuit, so The other end of the first tuning circuit is connected to the first feed end;

The second antenna unit further includes: a second signal source and a second tuning circuit; wherein the second signal source is connected to the second feed end, and one end of the second tuning circuit is connected to the second At a first position on the radiator, the other end of the second tuning circuit is grounded, and the first position is between the second coupling end and the second feed end;

The first excitation signal generated by the first signal source is fed into the first radiator through the first feeding end after being tuned by the first tuning circuit and the second tuning circuit. and the second radiator to excite the first radiator and the second radiator to generate a first resonant mode; wherein the first resonant mode is a resonant mode in the MHB frequency band;

The second excitation signal generated by the second signal source is fed into the first radiator through the second feeding end after being tuned by the first tuning circuit and the second tuning circuit. and the second radiator to excite the first radiator and the second radiator to generate a second resonance mode; wherein the second resonance mode is the resonance of at least two frequency bands in the LB frequency band modal.
The electronic device according to claim 4, wherein

The first resonant mode includes: a 3/4 wavelength mode from the first ground end to the first coupling end, and a 1/4 wavelength mode from the second coupling end to the first position;

The second resonance mode includes: a 1/4 wavelength mode from the first ground terminal to the first coupling terminal, and a 1/4 wavelength mode from the second coupling terminal to the second ground terminal.
The electronic device according to claim 4, wherein

The first signal source is connected to the radio frequency receiving circuit corresponding to frequency bands in the MHB frequency band except the target frequency band.
The electronic device according to claim 2, wherein the first radiator includes: a third ground terminal and a third coupling terminal, the second radiator includes: a fourth coupling terminal, a third feeding terminal, a third Four feed terminals and a fourth ground terminal, a first gap is formed between the third coupling terminal and the fourth coupling terminal; wherein,

The length of the radiator between the fourth coupling end and the fourth ground end is greater than the length of the radiator between the third ground end and the third coupling end.
The electronic device according to claim 7, wherein the first antenna unit further includes: a third tuning circuit, one end of the third tuning circuit is connected to the second position of the first radiator, and the third tuning circuit The other end of the three-tuned circuit is grounded; wherein the second position is located between the third coupling end and the third ground end;

The second antenna unit also includes: a fourth tuning circuit, a third signal source and a fourth signal source; wherein one end of the fourth tuning circuit is connected to the third feed end, and the fourth tuning circuit has The other end is connected to the third signal source, and the fourth signal source is connected to the fourth feed end;

The third excitation signal generated by the third signal source is fed into the first radiator through the third feeding end after being tuned by the third tuning circuit and the fourth tuning circuit. and the second radiator to excite the first radiator and the second radiator to generate a first resonant mode; wherein the first resonant mode is a resonant mode in the MHB frequency band;

The fourth excitation signal generated by the fourth signal source is tuned by the third tuning circuit and the fourth tuning circuit, and then fed into the first radiator and the first radiator through the fourth feeding end. The second radiator is used to excite the first radiator and the second radiator to generate a second resonant mode; wherein the second resonant mode is the resonant mode of at least two frequency bands in the LB frequency band. state.
The electronic device according to claim 8, wherein the third feed terminal and the fourth feed terminal are located between the fourth coupling terminal and the fourth ground terminal, the third feed terminal The end is close to the fourth coupling end, and the fourth feeding end is close to the fourth ground end.
The electronic device according to claim 9, wherein

The first resonance mode includes: a 3/4 wavelength mode from the third ground end to the third coupling end, and a 1/4 wavelength mode from the fourth coupling end to the third feed end;

The second resonance mode includes: a 1/4 wavelength mode from the third ground terminal to the third coupling terminal, and a 1/4 wavelength mode from the fourth coupling terminal to the fourth ground terminal.
The electronic device according to claim 8, wherein

The third signal source is connected to the radio frequency receiving circuit corresponding to frequency bands in the MHB frequency band except the target frequency band.
The electronic device according to any one of claims 4 or 8, wherein,

The first tuning circuit of the first antenna unit, the second tuning circuit of the first antenna unit, the third tuning circuit of the second antenna unit and the fourth tuning circuit of the second antenna unit have the same structure. ; Wherein, the first tuning circuit includes:

A first switch, a first matching circuit, a second matching circuit, a third matching circuit and a fourth matching circuit; wherein the control end of the first switch forms one end of the first tuning circuit, and the control end of the first switch forms one end of the first tuning circuit. The first end is connected to one end of the first matching circuit, the other end of the first matching circuit forms the other end of the first tuning circuit, and the second end of the first switch is connected to the second matching circuit. One end, the other end of the second matching circuit is grounded, the third end of the first switch is connected to the third matching circuit, the other end of the third matching circuit is grounded, and the fourth end of the first switch The fourth matching circuit is connected, and the other end of the fourth matching circuit is grounded.
The electronic device according to claim 1, wherein

The second antenna component is placed in the bottom frame of the second part when the electronic device is placed vertically and in an open state, and the first antenna component is placed in the third portion of the electronic device when the electronic device is placed vertically. part of the side border.
The electronic device according to claim 13, wherein

The first area of the electric field generated by the second antenna component is located in the middle area of the bottom frame of the second part; wherein the electric field intensity of the first area is greater than the electric field of areas other than the first area of the electric field. strength.