WO2018153129A1

WO2018153129A1 - Dual-polarized antenna isolation apparatus and method

Info

Publication number: WO2018153129A1
Application number: PCT/CN2017/112270
Authority: WO
Inventors: 沈龙; 王强; 耿阳; 张婧思; 张安学
Original assignee: 华为技术有限公司
Priority date: 2017-02-23
Filing date: 2017-11-22
Publication date: 2018-08-30
Also published as: CN106953173A; CN106953173B

Abstract

Disclosed are a dual-polarized antenna isolation apparatus and method, achieving the purpose that, under the premise of guaranteeing that full-duplex receiving and sending ends located at the same wireless access point are isolated, both of the receiving and sending ends can use a dual-polarized antenna to perform signal receiving and sending at the same time. The apparatus comprises a first signal sending end, a first signal receiving end and an isolation unit. The first signal sending end and the first signal receiving end are located in the same wireless access point, and both use a dual-polarized antenna. The isolation unit is located on an energy coupling path of the first signal sending end and the first signal receiving end, and is used for blocking electromagnetic energy generated by the first signal sending end from flowing to the first signal receiving end, wherein the energy coupling path refers to a path where the electromagnetic energy generated by the first signal sending end flows to the first signal receiving end when the first signal sending end and the first signal receiving end both work with two polarization directions of the respective dual-polarized antennas at the same time.

Description

Dual-polarized antenna isolation device and method

The present application claims priority to Chinese Patent Application No. JP-A No. No. No. No. No. No. No. No. No. No. No. No. No. In this application.

Technical field

The present application relates to the field of communications, and in particular, to a dual-polarized antenna isolation device and method.

Background technique

The Co-frequency Co-time Full Duplex (CCFD) system is a two-way communication system that uses the same frequency and transmits and receives simultaneously. A CCFD transceiver system generally consists of a receiver and a transmitter. For CCFD transceiver systems, transceiver isolation is an important indicator of system operation. If the transmission and reception isolation of the system is poor, the receiver will be disturbed when the transmitter transmits, and even the self-oscillation of the receiver will not work properly. Especially under high power conditions, it may even cause damage to the front-end amplifier of the receiver.

The prior art uses different polarizations to isolate the transmitter and receiver of the CCFD transceiver system. However, the disadvantage is also obvious, that is, the transceivers can only use one type of polarized antenna at the same time, so that the information transmission efficiency is low.

Summary of the invention

In order to solve the technical problem existing in the prior art, the present application provides a dual-polarized antenna isolation method and device, which realizes that the transceiver end is provided on the premise that the full-duplex transceiver end of the same wireless access point is isolated. Dual-polarized antennas can be used simultaneously for signal reception and transmission.

The present application provides a dual-polarized antenna isolation device, the device comprising a first signal transmitting end, a first signal receiving end, and an isolation unit;

The first signal transmitting end and the first signal receiving end are located in the same wireless access point, and both adopt dual-polarized antennas, and the first signal transmitting end is used to transmit signals in full-duplex mode. The first signal receiving end is configured to receive a signal in the full duplex mode;

The isolation unit is located on the energy coupling path of the first signal transmitting end and the first signal receiving end, and is configured to block electromagnetic energy generated by the first signal transmitting end from flowing to the first signal receiving end; The energy coupling path refers to when the first signal transmitting end and the first signal receiving end both work in two polarization directions of the respective dual-polarized antennas, and is generated by the first signal transmitting end. The path of electromagnetic energy to the first signal receiving end.

Optionally, the isolation unit is specifically located in a region where a radiant side of the first signal transmitting end and a radiant side of the first signal receiving end intersect.

Optionally, the isolation unit is specifically located on an energy coupling path of the first signal transmitting end and the first signal receiving end, and the electromagnetic energy meets a preset energy condition.

Optionally, the 3 dB beamwidth of the antenna pattern of the first signal transmitting end and the 3 dB beamwidth of the antenna pattern of the first signal receiving end partially or completely coincide with the coverage of the ground.

Optionally, the isolation unit includes:

Electromagnetic field bandgap unit, frequency selective surface and/or electromagnetic absorption unit.

Optionally, the electromagnetic energy isolation capability of the isolation unit is the first according to the preset frequency range. a signal transmission power of the signal transmitting end, an actual signal receiving power of the first signal receiving end without adding the isolation unit, and a target signal receiving power of the first signal receiving end when the isolation unit is added Ok to get.

Optionally, the device further includes:

a second signal transmitting end for transmitting a signal in a half duplex mode, and a second signal receiving end for receiving a signal in the half duplex mode, The second signal transmitting segment and the second signal receiving end are located in the wireless access point.

The application also provides a dual-polarized antenna isolation method, the method comprising:

Obtaining an energy coupling path between the first signal transmitting end and the first signal receiving end when the first signal transmitting end transmits a signal in the full duplex mode and the first signal receiving end receives the signal in the full duplex mode The first signal transmitting end and the first signal receiving end are located in the same wireless access point, and both adopt dual-polarized antennas, and the energy coupling path refers to when the first signal transmitting end and the When the first signal receiving end is simultaneously operated by the two polarization directions of the respective dual-polarized antennas, the electromagnetic energy generated by the first signal transmitting end flows to the path of the first signal receiving end;

An isolation unit is disposed on the energy coupling path, so that the isolation unit blocks electromagnetic energy generated by the first signal transmitting end from flowing to the first signal receiving end.

Optionally, the method further includes:

Determining a radiation edge of the first signal transmitting end and a radiation edge of the first signal receiving end;

The providing the isolation unit on the energy coupling path comprises:

The isolation unit is disposed in a region where a radiation side of the first signal transmitting end and a radiation side of the first signal receiving end intersect.

Optionally, the method further includes:

Determining, on an energy coupling path of the first signal transmitting end and the first signal receiving end, an area where the electromagnetic energy meets a preset energy condition;

The providing the isolation unit on the energy coupling path comprises:

The isolation unit is disposed in the area.

Optionally, the isolation unit includes:

Optionally, the electromagnetic energy isolation capability of the isolation unit is based on the signal transmission power of the first signal transmitting end in the preset frequency range, and the first signal receiving end is not added to the isolation unit. The actual signal received power and the target signal received power of the first signal receiving end are determined in the case where the isolation unit is added.

The present application also provides a dual-polarized antenna isolation device, the device comprising: an energy coupling path acquisition unit and an isolation unit setting unit;

The energy coupling path acquiring unit is configured to acquire a signal transmitted by the first signal transmitting end in a full duplex mode And an energy coupling path between the first signal transmitting end and the first signal receiving end when the first signal receiving end receives the signal in the full duplex mode; the first signal transmitting end and the first signal The receiving end is located in the same wireless access point, and both adopt dual-polarized antennas. The energy coupling path means that when the first signal transmitting end and the first signal receiving end both adopt respective dual polarizations When the two polarization directions of the antenna are working, the electromagnetic energy generated by the first signal transmitting end flows to the path of the first signal receiving end;

The isolation unit setting unit is configured to set an isolation unit on the energy coupling path, so that the isolation unit blocks electromagnetic energy generated by the first signal transmitting end from flowing to the first signal receiving end.

The following summarizes the beneficial effects of the embodiments of the present application:

In this embodiment, the electromagnetic energy isolation is blocked by applying electromagnetic energy generated by the first signal transmitting end in the dual-polarized antenna and operating in the full-duplex mode to the energy coupling path of the first signal receiving end. The unit realizes that the transceiver can simultaneously use the dual-polarized antenna for signal reception and transmission while ensuring that the full-duplex transceiver end of the same wireless access point is isolated.

DRAWINGS

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings to be used in the embodiments or the prior art description will be briefly described below. Obviously, the drawings in the following description are only It is a few embodiments described in the present application, and other drawings can be obtained from those skilled in the art without any inventive effort.

1 is a schematic structural diagram of a dual-polarized antenna isolation device according to Embodiment 1 of the present application;

2 is a schematic diagram of electromagnetic energy obtained by simulating the first signal transmitting end 101 and the first signal receiving end 102 in the first embodiment of the present application;

3 is a schematic diagram of electromagnetic energy after adding an EBG structure on the basis of FIG. 2 in the first embodiment of the present application;

4 is a comparison diagram of frequency-isolation in the first embodiment of the present application;

5 is a schematic diagram of a main energy coupling path formed when a port of the first signal transmitting end 101 transmits a signal in a +45° direction according to the first embodiment of the present application;

6(a) is a practical view showing the installation of two 2.6G transceiver dual-polarized antennas on a bottom plate in the first embodiment of the present application;

6(b) is a practical effect view of the EBG structure added to the bottom plate in the first embodiment of the present application;

FIG. 7 is a schematic diagram of adding two antennas working in a half-duplex mode to a remaining space of a backplane according to Embodiment 1 of the present application;

FIG. 8 is a flowchart of a method for isolating a dual-polarized antenna according to Embodiment 2 of the present application;

FIG. 9 is a structural block diagram of a dual-polarized antenna isolation device according to Embodiment 3 of the present application.

detailed description

The technical solutions in the embodiments of the present application are described below in conjunction with the accompanying drawings in the embodiments of the present application.

Embodiment 1:

FIG. 1 is a schematic structural diagram of a dual-polarized antenna isolation device according to Embodiment 1 of the present application.

The dual-polarized antenna isolation device provided in this embodiment includes: a first signal transmitting end 101, and a first signal receiving end End 102 and isolation unit 103.

The first signal transmitting end 101 and the first signal receiving end 102 are located in the same wireless access point. The wireless access point is a bridge for a user to access a wireless core network or an Ethernet network, including a macro station, a small station, and the like. The first signal transmitting end 101 and the first signal receiving end 102 may each be an antenna.

The first signal transmitting end 101 is configured to transmit a signal by using a dual polarized antenna in a full duplex mode, and the first signal receiving end 102 is configured to receive a signal by using a dual polarized antenna in the full duplex mode. As described above, the full-duplex mode is that the signal transmitted by the first signal transmitting end 101 is the same as the frequency of the signal received by the first signal receiving end 102, and the first signal transmitting end 101 transmits a signal. The time is the same as the time at which the first signal receiving end 102 receives the signal.

When the first signal transmitting end 101 emits a signal, electromagnetic waves radiated outward are generated, and a part of the electromagnetic wave energy flows to the first signal receiving end 102. It is represented in the pattern that the 3dB beamwidth of the antenna pattern of the first signal transmitting end and the 3dB beamwidth of the antenna pattern of the first signal receiving end partially or completely coincide with the coverage of the ground. The radiation pattern, also called the radiation pattern, the far-field pattern, etc., refers to a pattern in which the relative field strength of the radiation field changes with direction at a certain distance from the antenna, and the maximum radiation direction through the antenna is usually adopted. Two mutually perpendicular plane patterns are shown, one plane pattern is horizontal and the other plane is vertical. The 3 dB beamwidth of the antenna pattern, also called beamwidth, refers to the main lobe width. The lobe width, as the name implies, is the angle at which the fan surface formed by radio wave radiation is opened. The radiation intensity of the radio waves emitted by the same antenna in different directions is different, so the angle between the two directions defined as being 3 dB lower than the power in the maximum radiation direction is the lobe width. There is a lobe width in each of the horizontal and vertical planes. The lobe in the direction of the maximum energy density in the antenna pattern is called the main lobe, and the width of the main lobe is called the main lobe width. The lobe width of the antenna is related to its coverage on the ground. The larger the lobe width, the wider the radiation range; the smaller the lobe width, the smaller the radiation range.

When the 3dB beamwidth of the antenna pattern of the first signal transmitting end and the 3dB beamwidth of the antenna pattern of the first signal receiving end overlap or partially overlap the coverage of the ground, because the first signal transmitting end 101 The transmitting signal and the first signal receiving end 102 receive the signal simultaneously and at the same frequency. Therefore, if the electromagnetic wave radiated by the first signal transmitting end 101 is received by the first signal receiving end 102, The first signal receiving end 102 receives interference from a signal of the peer wireless access point.

In this embodiment, when the first signal transmitting end 101 and the first signal receiving end 102 are both operated in the two polarization directions of the respective dual-polarized antennas, the first signal is transmitted by the first signal. The path of the electromagnetic energy generated by the terminal 101 to the first signal receiving end 102 is referred to as an energy coupling path. The electromagnetic energy is the energy of electromagnetic waves.

In order to reduce the interference caused by the electromagnetic energy radiated by the first signal transmitting end 101 of the first signal receiving end 102, the present embodiment places the isolation unit 103 on the energy coupling path. The isolation unit 103 may be located at any position on the energy coupling path for blocking electromagnetic energy generated by the first signal transmitting end 101 from flowing to the first signal receiving end 102. Taking FIG. 1 as an example, in the figure, the first signal transmitting end 101 transmits a signal by using a dual-polarized antenna in a -45° direction, and the first signal receiving end 102 adopts a dual-polarized antenna in a +45° direction. receive signal. The dotted line indicates one of the energy coupling paths, and the dotted arrow indicates the electromagnetic energy flow. The direction of movement. The isolation unit 103 is placed on the energy coupling path to block electromagnetic energy flowing from the first signal transmitting end 101 to the first signal receiving end 102, so that the first signal receiving end 102 receives Interference signals are weakened or even eliminated.

Since the first signal transmitting end 101 radiates electromagnetic waves in all directions, there are many strips of the energy coupling path. In theory, in order to minimize the interference caused by the electromagnetic wave by the first signal receiving end 102, the isolation unit 103 may be used to block all energy coupling paths, but in this case, the area of the isolation unit 103 may be smaller. Large, the cost will be higher. Since not all energy in the energy coupling path is the same, some of the energy coupling paths flow more electromagnetic energy, and some energy coupling paths flow less electromagnetic energy. In order to save the material and cost of the isolation unit 103, it may be selected to provide the isolation unit 103 only on an energy coupling path with a large amount of electromagnetic energy flowing, for example, radiation of electromagnetic energy along the first signal transmission end 101. The edge and the radiation side of the first signal receiving end 102 flow to the energy coupling path of the first signal receiving end 102. The radiating edge refers to the side where the electromagnetic energy of the antenna is separated from the antenna and propagates to a distant place. The direction in which the radiating edge of the first signal transmitting end 101 is directed is the direction in which the electromagnetic energy is most intense, and the direction in which the radiating edge of the first signal receiving end 102 is directed is the direction in which the electromagnetic energy is received the strongest.

Referring to FIG. 2, the figure is a schematic diagram of electromagnetic energy obtained by simulating the first signal transmitting end 101 and the first signal receiving end 102, wherein the three ports are the first signal transmitting end 101 at -45. The port in the ° direction, the port 2 is the port of the first signal receiving end 102 in the +45° direction. The direction in which the 3-port radiant side is directed is the southeast direction, and the direction in which the 2-port radiant side is directed is the northeast direction. The shade of color in Fig. 2 indicates the energy density of electromagnetic energy. The lighter the color, the higher the energy density, and the darker the color, the lower the energy density. As can be seen from the figure, the radiant side is pointed near the 3 port. The direction is lighter, the energy density is higher, and the other colors are darker and the energy density is lower. In the vicinity of the 2 port, the direction of the radiant side is lighter, the energy density is higher, and the other colors are darker. The density is lower. As can be seen from Figure 2, a portion of the electromagnetic energy radiated from the 3-port radiant side flows along the radiant side of the 2-port to the 2-port, forming an energy coupling path. In order to block the energy coupling path, an isolation unit EBG (Electromagnetic Band Gap) structure may be placed on the energy coupling path. The specific location of the EBG structure may be only on the OA segment, or only on the OB segment, and may also span the OA segment and the OB segment at the same time, where the point O is the radiant edge of the 3-port and the 2-port The intersection of the radiating edges, point A is the starting point of the 3-port radiating edge, and point B is the end point of the 2-port radiating edge.

Referring to FIG. 3, which is a schematic diagram of electromagnetic energy after adding an EBG structure on the basis of FIG. 2, the EBG structure spans both the OA segment and the OB segment, that is, the EBG structure is at the radiating edge of the 3-port and the The area where the radiating edges of the 2 ports intersect. Moreover, as can be seen from FIG. 3, the EBG structure blocks electromagnetic energy from the 3-port flow to the 2-port energy coupling path, and the electromagnetic energy in the vicinity of the 2-port, especially the radiant side, is greatly reduced (from light color) Turns dark).

Referring to FIG. 4, the figure is a frequency-isolation comparison diagram, where the x-axis represents the frequency of the 3-port transmit signal and the frequency of the 2-port receive signal; the y-axis represents the isolation, in dB, calculated as 10*log (V2/V3), V3 is the voltage of 3 ports, and V2 is the voltage of 2 ports.

The dotted line in FIG. 4 indicates the frequency of the 3-port transmit signal or 2 before the EBG structure is not added in FIG. The isolation of the frequency at which the port receives the signal; the solid line indicates the isolation of the frequency of the 3-port transmit signal or the frequency of the 2-port receive signal after the EBG structure is added in FIG. According to the dotted line and the solid line, in the frequency interval (2.480 GHz, 2.644 GHz), the isolation is significantly decreased after the addition of the EBG structure, and the minimum is -47.50 db, which proves that after the EBG structure is added, The degree of electromagnetic interference generated by the two ports by the three ports is effectively reduced.

In FIGS. 2 and 3, the first signal transmitting end 101 transmits a signal in a port in the -45° direction (ie, 3 ports), and the first signal receiving end 102 is in a port in the +45° direction ( That is, 2 ports) receive signals. Since the first signal transmitting end 101 and the first signal receiving end 102 are dual-polarized antennas, that is, the first signal transmitting end 101 transmits a signal in a port in the +45° direction, and the The first signal receiving end 102 receives a signal at a port in the -45° direction, in which case the electromagnetic energy distribution in FIGS. 2 and 3 is distributed by the first signal transmitting end 101 and the first signal receiving end. The connection of 102 is symmetrical with respect to the axis, and the energy coupling path is also symmetrical with the axis. Referring to FIG. 5, if FIG. 1 is a simplified version of FIG. 3, FIG. 5 is a main energy coupling path formed when a port of the first signal transmitting end 101 transmits a signal in a +45° direction, that is, electromagnetic energy. From the direction in which the radiant side of the first signal transmitting end 101 in the +45° direction is directed, the direction of the radiant side of the first signal receiving end 102 in the -45° direction is directed. The radiating unit 103 is placed in a region where the radiating edge of the first signal transmitting end 101 in the +45° direction and the radiating edge of the first signal receiving end 102 intersecting in the -45° direction.

Referring to FIG. 6(a), the figure shows the actual effect diagram of two 2.6G transceiver dual-polarized antennas mounted on the bottom plate; see FIG. 6(b), which is a practical effect diagram after adding the isolation unit to the bottom plate. The isolation structure in this figure refers to the EBG structure.

In addition, the EBG structure mentioned above is one implementation of the isolation unit 103. The EBG was formerly called Photonic Band Gap (P B G), which means that the electromagnetic wave having a specific frequency band composed of a periodic structure produces a stop band characteristic, which is used as a blocking or intercepting of electromagnetic waves in this embodiment.

The isolation unit 103 may also be a Frequency Selective Surface (FSS), which is a single-screen or multi-screen periodic array structure composed of a large number of passive resonant units, which are periodically arranged metal. The patch unit or the aperture unit periodically arranged on the metal screen has a function of reflecting electromagnetic waves.

The isolation unit 103 may also be an electromagnetic absorption unit, that is, composed of an electromagnetic absorbing material that absorbs electromagnetic wave energy projected onto its surface. According to the principle of absorbing wave, the absorbing material can be divided into an absorbing type and an interference type. The absorbing material itself absorbs and absorbs electromagnetic waves, and the basic type has an absorber having substantially the same complex permeability and complex permittivity, and an impedance gradient. Widescreen" absorber and thin layer absorber that attenuates surface current; the interference type is offset by the electromagnetic waves on the surface of the absorber layer and the reflected waves of opposite phase amplitudes.

It can be understood that the three types of isolation units 103 mentioned above do not constitute a limitation on the present application, and those skilled in the art may also select other types of isolation units according to specific situations.

The electromagnetic energy isolation capability of the isolation unit 103 is based on the signal transmission power of the first signal transmitting end within a preset frequency range, and the actual signal receiving of the first signal receiving end without being added to the isolation unit. Power, and target signal of the first signal receiving end in the case of adding the isolation unit The received power is determined. Those skilled in the art can select different types of isolation units according to the requirements of different isolation capabilities. If the same isolation unit is selected, different isolation capabilities can be realized according to different positions, sizes, structures, and the like of the isolation units. As shown in FIG. 3, the small squares of the EBG represent metal patches, and the metal short-circuit holes can be connected to the bottom plate. The more the small squares, the stronger the isolation capability; the smaller the small squares, the weaker the isolation capability. In addition, the EBG in Figure 3 is located at the same time across the OA segment and the OB segment, and its isolation capability is weaker than it is only on the OA segment, and higher than it is only on the OB segment because of the electromagnetic energy on the OA segment. The intensity is higher than the electromagnetic energy intensity on the OB segment. Therefore, the isolation unit 103 is specifically determined according to the isolation capability at a specific position where the energy coupling path is placed, that is, an area where the electromagnetic energy satisfies a preset energy condition, and the preset energy condition may be, for example, an average of the area. The electromagnetic energy value is within a preset range that matches the isolation capability. Taking the EBG structure as an example, the dimensions of the metal patch of the EBG structure and the gap between the metal patches are designed according to the isolation capability, and the specific methods include plane wave expansion method (PWE) and time domain finite difference method (FDTD). ), transmission line matrix method, integral equation method, finite element method, etc.

In addition, in this embodiment, the dual-polarized antenna isolation device may further include a second signal transmitting end and a second signal receiving end, where the second signal transmitting end is configured to transmit a signal in a half-duplex mode. The second signal receiving end is configured to receive a signal in the half duplex mode, and the second signal transmitting segment and the second signal receiving end are located in the wireless access point. The so-called half-duplex mode, that is, the second signal transmitting end and the second signal receiving end are only working at one time point, that is, if the second signal transmitting end transmits a signal to the opposite end, the second The signal receiving end suspends receiving the signal; if the second signal receiving end is receiving the signal from the opposite end, the second signal transmitting end stops transmitting the signal.

Referring to FIG. 7, on the basis of FIG. 6, the advantage of the small area of the isolation unit 103 is adopted, and a 3.5 GHz antenna and a 5.8 GHz antenna are added to the remaining space of the bottom board, and one of the two antennas can be used as one of the two antennas. The second signal transmitting end and the other one can serve as the second signal receiving end. That is to say, the dual-polarized antenna isolation device can simultaneously operate in full-duplex mode of 2.6 GHz and half-duplex mode of 3.5 GHz (future TDD band) and 5.8 GHz (WIFI band). Achieve a variety of functions of the device.

The following summarizes the beneficial effects of this embodiment:

1. The present embodiment sets a resistance by flowing electromagnetic energy generated by the first signal transmitting end 101 in the full-duplex mode to the energy coupling path of the first signal receiving end 102 by using a dual-polarized antenna. The isolation unit 103 for breaking electromagnetic energy realizes that the transceiver terminal can simultaneously use the dual-polarized antenna for signal reception and transmission while ensuring that the full-duplex transceiver end of the same wireless access point is isolated.

2. The embodiment may select an energy coupling path with a higher electromagnetic energy intensity to arrange the isolation unit 103 to achieve the purpose of reducing the area of the isolation unit 103, so that the dual-polarized antenna isolation device is miniaturized.

3. In this embodiment, the functions of the device are diversified by adding the second signal receiving end and the second signal transmitting end operating in the half duplex mode.

Embodiment 2

FIG. 8 is a flowchart of a dual-polarized antenna isolation method according to Embodiment 2 of the present application.

The dual polarization antenna isolation method provided in this embodiment includes:

Step S101: Acquire a first signal transmitting end transmitting a signal in a full duplex mode and a first signal receiving end receiving a signal in the full duplex mode, the first signal transmitting end and the first signal receiving end Energy coupling path.

The first signal transmitting end and the first signal receiving end are located in the same wireless access point, and both adopt dual-polarized antennas.

The energy coupling path refers to that when the first signal transmitting end and the first signal receiving end both work in two polarization directions of the respective dual-polarized antennas, the first signal transmitting end generates The electromagnetic energy flows to the path of the first signal receiving end.

The energy coupling path may simulate and simulate the first signal transmitting end and the first signal receiving end by using simulation software, and obtain an energy distribution of the electromagnetic wave generated by the first signal transmitting end when transmitting the signal, and then pass The energy distribution confirms the energy coupling path. The simulation principle of the simulation software may be a quality method, a finite element method, or the like, which is not specifically limited in this embodiment.

As described in the first embodiment, the energy coupling path may be determined according to a radiation edge of the first signal transmitting end and a radiation edge of the first signal receiving end, the first signal transmitting end and the first The radiating edge of a signal receiving end can be determined according to the respective feeding point, and the edge near the feeding point is the radiating edge; for the complex model, the method of full wave analysis can be calculated.

Step S102: The isolation unit is disposed on the energy coupling path, so that the isolation unit blocks electromagnetic energy generated by the first signal transmitting end from flowing to the first signal receiving end.

In this embodiment, when the first signal transmitting end transmits the signal in the full duplex mode and the first signal receiving end receives the signal in the full duplex mode, the first signal transmitting end and the first signal receiving end are received. An energy coupling path of the end, and then providing an isolation unit on the energy coupling path, so that the isolation unit blocks electromagnetic energy generated by the first signal transmitting end from flowing to the first signal receiving end, thereby achieving the same On the premise that the side full-duplex transceiver is isolated, the transceiver can simultaneously use the dual-polarized antenna for signal reception and transmission.

Optionally, the method further includes:

The providing the isolation unit on the energy coupling path comprises:

Optionally, the method further includes:

The providing the isolation unit on the energy coupling path comprises:

The isolation unit is disposed in the area.

Optionally, the isolation unit includes:

Embodiment 3

The dual-polarized antenna isolation device provided by this embodiment includes: an energy coupling path acquiring unit 201 and an isolation unit setting unit 202;

The energy coupling path acquiring unit 201 is configured to acquire, when the first signal transmitting end transmits a signal in the full duplex mode, and when the first signal receiving end receives the signal in the full duplex mode, the first signal transmitting end And an energy coupling path of the first signal receiving end; the first signal transmitting end and the first signal receiving end are located in the same wireless access point, and both adopt dual-polarized antennas, and the energy coupling path is Means that when the first signal transmitting end and the first signal receiving end both operate in two polarization directions of the respective dual-polarized antennas, the electromagnetic energy generated by the first signal transmitting end flows to the a path of the first signal receiving end;

The isolation unit setting unit 202 is configured to set an isolation unit on the energy coupling path, so that the isolation unit blocks electromagnetic energy generated by the first signal transmitting end from flowing to the first signal receiving end.

When introducing elements of various embodiments of the present application, the articles "a", "an", "the" The words "including", "comprising" and "having" are meant to be inclusive and mean that there are other elements in addition to the elements listed.

It should be noted that those skilled in the art can understand that all or part of the process of implementing the above method embodiments can be completed by a computer program to instruct related hardware, and the program can be stored in a computer readable storage. In the medium, when the program is executed, the flow of the method embodiments as described above may be included. The storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM).

The various embodiments in the specification are described in a progressive manner, and the same or similar parts between the various embodiments may be referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the method embodiment, since it is basically similar to the device embodiment, the description is relatively simple, and the relevant parts can be referred to the description of the device embodiment. The device embodiments described above are merely illustrative, and the units and modules described as separate components may or may not be physically separate. In addition, some or all of the units and modules may be selected according to actual needs to achieve the purpose of the solution of the embodiment. Those of ordinary skill in the art can understand and implement without any creative effort.

The above description is only a specific embodiment of the present application, and it should be noted that those skilled in the art can also make several improvements and retouchings without departing from the principles of the present application. It should be considered as the scope of protection of this application.

Claims

A dual-polarized antenna isolation device, characterized in that the device comprises a first signal transmitting end, a first signal receiving end and an isolation unit;

The first signal transmitting end and the first signal receiving end are located in the same wireless access point, and both adopt dual-polarized antennas, and the first signal transmitting end is used to transmit signals in full-duplex mode. The first signal receiving end is configured to receive a signal in the full duplex mode;

The isolation unit is located on the energy coupling path of the first signal transmitting end and the first signal receiving end, and is configured to block electromagnetic energy generated by the first signal transmitting end from flowing to the first signal receiving end; The energy coupling path refers to when the first signal transmitting end and the first signal receiving end both work in two polarization directions of the respective dual-polarized antennas, and is generated by the first signal transmitting end. The path of electromagnetic energy to the first signal receiving end.
The apparatus according to claim 1, wherein said isolation unit is located in a region where a radiation side of said first signal transmitting end and a radiation side of said first signal receiving end intersect.
The device according to claim 1 or 2, wherein the isolation unit is specifically located on an energy coupling path of the first signal transmitting end and the first signal receiving end, and the electromagnetic energy meets a preset energy The area of the condition.
The apparatus according to claim 1, wherein a 3 dB beamwidth of the antenna pattern of the first signal transmitting end and a 3 dB beamwidth of the antenna pattern of the first signal receiving end are partially or completely covered by the ground. coincide.
The device according to claim 1, wherein the isolation unit comprises:

Electromagnetic field bandgap unit, frequency selective surface and/or electromagnetic absorption unit.
The device according to claim 1 or 5, wherein the electromagnetic energy isolation capability of the isolation unit is based on the signal transmission power of the first signal transmitting end within a preset frequency range, without adding the isolation The actual signal reception power of the first signal receiving end in the case of the unit, and the target signal receiving power of the first signal receiving end in the case of joining the isolation unit are determined.
The device of claim 1 further comprising:

a second signal transmitting end for transmitting a signal in a half duplex mode, and a second signal receiving end for receiving a signal in the half duplex mode, The second signal transmitting segment and the second signal receiving end are located in the wireless access point.
A dual-polarized antenna isolation method, the method comprising:

Obtaining an energy coupling path between the first signal transmitting end and the first signal receiving end when the first signal transmitting end transmits a signal in the full duplex mode and the first signal receiving end receives the signal in the full duplex mode The first signal transmitting end and the first signal receiving end are located in the same wireless access point, and both adopt dual-polarized antennas, and the energy coupling path refers to when the first signal transmitting end and the When the first signal receiving end is simultaneously operated by the two polarization directions of the respective dual-polarized antennas, the electromagnetic energy generated by the first signal transmitting end flows to the path of the first signal receiving end;

An isolation unit is disposed on the energy coupling path to block the first signal transmission by the isolation unit The electromagnetic energy generated at the end flows to the first signal receiving end.
The method of claim 8 further comprising:

Determining a radiation edge of the first signal transmitting end and a radiation edge of the first signal receiving end;

The providing the isolation unit on the energy coupling path comprises:

The isolation unit is disposed in a region where a radiation side of the first signal transmitting end and a radiation side of the first signal receiving end intersect.
The method according to claim 8 or 9, wherein the method further comprises:

Determining, on an energy coupling path of the first signal transmitting end and the first signal receiving end, an area where the electromagnetic energy meets a preset energy condition;

The providing the isolation unit on the energy coupling path comprises:

The isolation unit is disposed in the area.
The method according to claim 8, wherein the 3dB beamwidth of the antenna pattern of the first signal transmitting end and the 3dB beamwidth of the antenna pattern of the first signal receiving end are partially or completely covered by the ground. coincide.
The method of claim 8 wherein said isolating unit comprises:

Electromagnetic field bandgap unit, frequency selective surface and/or electromagnetic absorption unit.
The method according to claim 8 or 12, wherein the electromagnetic energy isolation capability of the isolation unit is based on the signal transmission power of the first signal transmitting end within a preset frequency range, without adding the isolation The actual signal reception power of the first signal receiving end in the case of the unit, and the target signal receiving power of the first signal receiving end in the case of joining the isolation unit are determined.
A dual-polarized antenna isolation device, comprising: an energy coupling path acquiring unit and an isolation unit setting unit;

The energy coupling path acquiring unit is configured to: when the first signal transmitting end transmits a signal in the full duplex mode, and the first signal receiving end receives the signal in the full duplex mode, the first signal transmitting end and the first signal transmitting end An energy coupling path of the first signal receiving end; the first signal transmitting end and the first signal receiving end are located in the same wireless access point, and both adopt dual-polarized antennas, and the energy coupling path refers to When the first signal transmitting end and the first signal receiving end both operate in the two polarization directions of the respective dual-polarized antennas, the electromagnetic energy generated by the first signal transmitting end flows to the first a path of a signal receiving end;

The isolation unit setting unit is configured to set an isolation unit on the energy coupling path, so that the isolation unit blocks electromagnetic energy generated by the first signal transmitting end from flowing to the first signal receiving end.