CN101677149B - Method for improving insulation of antennas, system and device - Google Patents

Abstract

The embodiment of the present invention discloses a method, system, and device for improving antenna isolation. The system includes: an antenna, used to obtain the amplitude and phase of energy coupled to other antennas from space; a coupler, used to the amplitude and phase of the energy coupled to the other antenna by the antenna from space, couple energy from the transmit link of the other antenna, and transfer the energy coupled from the transmit link of the other antenna to the antenna , wherein the energy coupled by the coupler from the transmission link of the other antenna is equal in amplitude and opposite in phase to the energy obtained by the antenna coupled to the other antenna from space. In the embodiment of the present invention, the isolation between antennas in a limited space is improved by using a coupler.

Description

A method, system and device for improving antenna isolation

technical field

The invention relates to the field of communication technology, in particular to a method, system and device for improving antenna isolation.

Background technique

In the wireless communication system, the transmission method using vertically polarized waves is the best. The vertically polarized waves are polarized waves whose polarization plane is parallel to the normal plane of the earth. It is suitable for transmission on the ground surface and is conducive to the coverage and communication. In the transmission path of mobile communication, various objects will interact with direct waves, reflected waves and scattered waves, which is multipath fading. Diversity technology will be used in wireless communication base stations to solve the effects of multipath fading. This diversity technology is realized by finding and utilizing independent multipath signals in the wireless propagation environment. Several commonly used diversity receiving technologies include: space diversity, polarization diversity, frequency diversity, and time diversity. Space diversity is to use multiple receiving antennas to receive signals, and then combine the received signals. In order to ensure the uncorrelation between the received signals, the distance between the antennas is required to be large enough to meet the isolation requirements of the system. Polarization diversity is a method of using orthogonal polarization. In a mobile environment, the horizontal path and the vertical path of the space are uncorrelated, and the signal also exhibits uncorrelated fading characteristics. At this time, two antennas can be installed at the transmitting end and the receiving end respectively, one horizontally polarized antenna and one vertically polarized antenna, and then two uncorrelated signals can be obtained. Similarly, polarization diversity also requires that the isolation requirements of the system be met between two polarizations.

In the prior art, co-polarized antennas are used. For example, in a space diversity communication system, a pair of vertically polarized antennas is used. The vertically polarized antennas are required to be installed at a certain distance to meet the isolation requirements of the communication system. degree requirements.

In the process of realizing the present invention, the inventor finds that there are at least the following problems in the prior art:

The isolation of co-polarization is low, and the antennas must be installed at a certain distance to meet the isolation requirements of the system. The closer the distance, the worse the isolation.

Contents of the invention

Embodiments of the present invention provide a method, system and device for improving antenna isolation, so as to improve the isolation between antennas.

On the one hand, an embodiment of the present invention proposes a system for improving antenna isolation, including:

Antennas used to obtain the magnitude and phase of energy coupled to other antennas from space;

a coupler for coupling energy from the transmit link of the other antenna according to the magnitude and phase of the energy of the other antenna coupled to the antenna from space, and coupling energy from the transmit link of the other antenna The coupled energy is transmitted to the antenna, wherein the coupling energy of the coupler from the transmission link of the other antenna is equal to the energy obtained by the antenna from the space coupled to the other antenna, and the phase is opposite .

The embodiment of the present invention also proposes a passive coupler, including: a first coupler and a second coupler, wherein:

The coupling section of the first coupler is coupled to other antennas, the phase section of the first coupler is connected to the receiving link of the antenna; the coupling section of the second coupler is coupled to the antenna, and the second The phase section of the coupler is connected to the receive chain of said other antenna.

The embodiment of the present invention also proposes an active coupler, including: a first coupler and a second coupler, wherein:

The first coupler includes a first signal amplitude and phase adjustment module, a first signal detection coupling section, a first coupling section, a control module and a detection module, one end of the first signal amplitude and phase adjustment module is connected to the receiving chain of the antenna The other end of the first signal amplitude and phase adjustment module is connected to the first coupling section, the first signal amplitude and phase adjustment module is connected to the control module, and the first coupling section is connected to the other Antenna coupling, the first signal detection coupling section is coupled to the antenna and connected to the detection module, and the detection module is connected to the control module;

The second coupler includes a second signal amplitude and phase adjustment module, a second signal detection coupling section, a second coupling section, the control module and the detection module, one end of the second signal amplitude and phase adjustment module is connected to the The receiving link of other antennas is connected, the other end of the second signal amplitude and phase adjustment module is connected to the second coupling section, the second signal amplitude and phase adjustment module is connected to the control module, and the second coupling The module is coupled to the antenna, the second signal detection coupling section is coupled to the other antenna and connected to the detection module, and the detection module is connected to the control module.

The embodiment of the present invention also proposes a method for improving antenna isolation, including:

The antenna acquires the amplitude and phase of energy coupled to other antennas from space;

The coupler couples energy on the transmission link of the other antenna according to the amplitude and phase of the energy on the other antenna coupled to the antenna from space, so that the antenna is coupled to the other antenna from space The energy on the other antennas is equal in magnitude to the energy coupled by the coupler from the transmission links of the other antennas, and the phases are opposite.

From the above technical solution, it can be known that by using a coupler to couple energy from the transmission link of other antennas, the energy coupled by the coupler is equal to the energy coupled from the antenna to other antennas in space, and the phase is opposite. The coupler The coupled energy is transmitted to the antenna, thereby canceling the energy coupled from the antenna to other antennas in space, thereby improving the isolation of the antenna.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. For those skilled in the art, other drawings can also be obtained according to these drawings without any creative effort.

FIG. 1 is a structural diagram of a system for improving antenna isolation in Embodiment 1 of the present invention;

FIG. 2 is a schematic diagram of a passive coupler according to Embodiment 2 of the present invention;

FIG. 3 is a structural diagram of a system for improving antenna isolation in Embodiment 3 of the present invention;

FIG. 4 is a schematic diagram of an active coupler according to Embodiment 4 of the present invention;

FIG. 5 is a flowchart of a method for improving antenna isolation according to Embodiment 5 of the present invention.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

An embodiment of the present invention is a system for improving antenna isolation, including:

Antennas used to obtain the magnitude and phase of energy coupled to other antennas from space;

a coupler for coupling energy from the transmission link of the other antenna according to the magnitude and phase of the energy of the other antenna coupled to the antenna from space, and transmitting the energy coupled from the transmission link of the other antenna For the antenna, wherein the energy coupled by the coupler from the transmission link of the other antenna is equal in amplitude and opposite in phase to the energy obtained by the antenna coupled to the other antenna from space.

It can be seen from the above that the embodiment of the present invention is a system for improving antenna isolation. A coupler is used to couple energy from the transmission link of other antennas. The energy coupled by the coupler is the same as the energy coupled from the antenna to other antennas from space. The amplitudes of the couplers are equal and the phases are opposite. The energy coupled by the coupler is transmitted to the antenna, thereby canceling the energy coupled from the antenna to other antennas from the space, and improving the isolation of the antenna.

A system for improving antenna isolation in an embodiment of the present invention is described in detail below. As shown in FIG. 1 , a system for improving antenna isolation includes: antenna 1, antenna 2, and passive coupler 3. 3 includes a first coupler 30 and a second coupler 31.

Antenna 1, to obtain the amplitude and phase of the energy coupled to antenna 2 from space;

The first coupler 30, according to the magnitude and phase of the energy coupled to the antenna 2 from the antenna 1 from space, couples energy from the transmission link of the antenna 2, and transmits the energy coupled to the transmission link from the antenna 2 For the antenna 1, the energy coupled by the first coupler 30 from the transmission link of the antenna 2 is equal to the energy coupled from the space of the antenna 1 to the antenna 2, and the phase is opposite.

Wherein, the antenna 2 can be used as another antenna.

Wherein, the first coupler 30 includes a first coupling section 301 and a first phase section 302, the first coupling section 301 is connected to the first phase section 302, and the first coupling section 301 is coupled to the transmission link of the antenna 2, This first phase segment 302 is connected to the receive chain of the antenna 1 .

It can be seen from the above that in a system for improving antenna isolation in the embodiment of the present invention, the first coupler 30 couples energy from the transmission link of the antenna 2, and the energy coupled by the first coupler 30 is coupled with the energy from the antenna 1. The amplitude of the energy coupled to the antenna 2 in the space is equal and the phase is opposite. The energy coupled by the first coupler 30 is transmitted to the antenna 1, thereby canceling the energy coupled from the antenna 1 to the antenna 2 from the space, and improving the performance of the antenna 1. isolation.

It can be understood that, for the energy coupled by the first coupler 30 from the transmission link of the antenna 2 and the energy coupled by the antenna 1 from the space to the antenna 2, the amplitude is equal, and there may be a certain error in the opposite phase, as long as the The energy coupled by the first coupler 30 from the transmission link of the antenna 2 and the energy coupled from the antenna 1 to the antenna 2 from the space are basically canceled, so that the isolation of the antenna can be improved. That is, the allowable range of the amplitude error of the energy coupled by the first coupling segment 301 from the transmission link of the antenna 2 is ±20% of the amplitude of the energy coupled from the antenna 1 to the antenna 2 from the space, and the first phase segment 302 is from the antenna 2 The allowable range of the phase error of the energy coupled to the transmission link is ±10 degrees of the phase of the energy coupled from the space of the antenna 1 to the antenna 2.

It should be noted that, for the first coupling section 301 and the first phase section 302 of the first coupler 30, the first coupling section 301 is connected to the first phase section 302, and the structure of the first coupling section 301 and the first phase section 302 It is not limited, as long as the first coupling section 301 of the first coupler 30 couples energy from the transmission link of the antenna 2, and then transmits it to the antenna 1 through the first phase section 302, so that the energy coupled by the first coupler 30 is the same as The energy cancellation of antenna 1 coupled to antenna 2 in space is enough.

Similarly, in a system for improving antenna isolation in the above embodiment, it also includes:

Antenna 2, to obtain the amplitude and phase of the energy coupled to antenna 1 from space;

The second coupler 31, according to the magnitude and phase of the energy coupled to the antenna 1 by the antenna 2 from space, couples energy from the transmission link of the antenna 1, and transmits the energy coupled to the transmission link of the antenna 1 For the antenna 2, the energy coupled by the second coupler 31 from the transmission link of the antenna 1 is equal to the energy coupled from the space of the antenna 2 to the antenna 1, and the phase is opposite.

Wherein, the antenna 1 can be used as another antenna.

Wherein, the second coupler 31 includes a second coupling section 311 and a second phase section 312, the second coupling section 311 and the second phase section 312 are connected, and the second coupling section 311 is coupled with the transmission link of the antenna 1, This second phase segment 312 is connected to the receive chain of the antenna 2 .

It can be seen from the above that in a system for improving antenna isolation in the embodiment of the present invention, the second coupler 31 couples energy from the transmission link of the antenna 1, and the energy coupled by the second coupler 31 is coupled with the energy from the antenna 2. The amplitude of the energy coupled to the antenna 1 in the space is equal and the phase is opposite, and the energy coupled by the second coupler 31 is sent to the antenna 2, thereby canceling the energy coupled from the antenna 2 to the antenna 1 from the space, and improving the performance of the antenna 2. isolation.

Wherein, it can be understood that the amplitude of the energy coupled by the second coupler 31 from the transmission link of the antenna 1 is equal to the energy coupled from the space of the antenna 2 to the antenna 1, and the phase is opposite, and there may be a certain error. As long as the energy coupled by the second coupler 31 from the transmission link of the antenna 1 and the energy coupled by the antenna 2 from the space to the antenna 1 are basically canceled, the isolation of the antenna can be improved. That is, the allowable range of the amplitude error of the energy coupled by the second coupling segment 311 from the transmission link of the antenna 1 is ±20% of the amplitude of the energy coupled from the antenna 2 to the antenna 1 from the space, and the second phase segment 312 is from the antenna 1 The allowable range of the phase error of the energy coupled to the transmission link is ±10 degrees of the phase of the energy coupled from the space of the antenna 2 to the antenna 1 .

Similarly, it should be noted that for the second coupling section 311 and the second phase section 312 of the second coupler 31, the second coupling section 311 is connected to the second phase section 312, and the second coupling section 311 is connected to the second phase section The structure of 312 is not limited, as long as the second coupling section 311 of the second coupler 31 couples energy from the transmission link of the antenna 1, and then transmits the energy to the antenna 2 through the second phase section 312, so that the second coupler 31 from The energy coupled to the transmission link of the antenna 1 and the energy coupled to the antenna 1 from the space of the antenna 2 need only be relatively cancelled.

Among them, for the passive coupler 3, before adding the passive coupler 3 between the antenna 1 and the antenna 2, it is necessary to obtain the amplitude and phase of the energy coupled to the antenna 2 from the space on the antenna 1 in advance, according to the antenna 1 Select the appropriate first coupler 30 for the amplitude and phase of the energy coupled to the antenna 2 from the space, so that the first coupler 30 can couple the energy coupled from the transmission link of the antenna 2 with the antenna 1 from the space The amplitude of the energy to antenna 2 is equal and the phase is opposite; similarly, it is necessary to obtain the amplitude and phase of the energy coupled to antenna 1 from space on antenna 2 in advance, according to the energy amplitude and phase of antenna 1 coupled to antenna 2 from space An appropriate second coupler 31 is selected for the amplitude and phase of the energy, so that the energy that the second coupler 31 can couple from the transmission link of the antenna 1 is equal to the amplitude of the energy that the antenna 2 couples to the antenna 1 from space, Phase opposite.

It can be understood that, in the above-mentioned system embodiment for improving antenna isolation, antenna 1 and antenna 2 can have the functions of receiving signals and transmitting signals at the same time, and at this time, antenna 1 and antenna 2 need to use passive coupler 3 It can also be that antenna 1 has the function of receiving signals, and antenna 2 has the function of transmitting signals. At this time, antenna 1 and antenna 2 can adopt the first coupler 30; it can also be that antenna 1 has the function of transmitting signals, and antenna 2 has For the function of receiving signals, the antenna 1 and the antenna 2 can use the second coupler 31 at this time.

Embodiment 2 of the present invention provides a passive coupler 3, as shown in FIG. 2 , including:

The first coupler 30, according to the magnitude and phase of the energy coupled to the antenna 2 from the antenna 1 from space, couples energy from the transmission link of the antenna 2, and transmits the energy coupled to the transmission link from the antenna 2 For the antenna 1, the energy coupled by the first coupler 30 from the transmission link of the antenna 2 is equal to the energy coupled from the space of the antenna 1 to the antenna 2, and the phase is opposite.

Wherein, the first coupler 30 includes a first coupling section 301 and a first phase section 302, the first coupling section 301 is connected to the first phase section 302, and the first coupling section 301 is coupled to the transmission link of the antenna 2, This first phase segment 302 is connected to the receive chain of the antenna 1 .

The first coupling section 301 is used for coupling energy from the transmission link of the antenna 2 , and the first phase section 302 transmits the energy coupled by the first coupling section 301 from the transmission link of the antenna 2 to the antenna 1 .

The second coupler 31, according to the magnitude and phase of the energy coupled to the antenna 1 by the antenna 2 from space, couples energy from the transmission link of the antenna 1, and transmits the energy coupled to the transmission link of the antenna 1 For the antenna 2, the energy coupled by the second coupler 31 from the transmission link of the antenna 1 is equal to the energy coupled from the space of the antenna 2 to the antenna 1, and the phase is opposite.

Wherein, the second coupler 31 includes a second coupling section 311 and a second phase section 312, the second coupling section 311 and the second phase section 312 are connected, and the second coupling section 311 is coupled with the transmission link of the antenna 1, This second phase segment 312 is connected to the receive chain of the antenna 2 .

The second coupling section 311 is used for coupling energy from the transmission link of the antenna 1 , and the second phase section 312 transmits the energy coupled by the second coupling section 311 from the transmission link of the antenna 1 to the antenna 2 .

Embodiment 3 of the present invention provides a system for improving antenna isolation, as shown in Figure 3, including: antenna 4, antenna 5 and active coupler 6, the active coupler 6 includes a first coupler and a second device.

The antenna 4 is used to obtain the amplitude and phase of the energy coupled to the antenna 5 from space;

The first coupler is used for coupling energy from the transmission link of the antenna 5 according to the amplitude and phase of the energy coupled to the antenna 5 from the antenna 4 from space, and the energy coupled to the transmission link from the antenna 5 It is transmitted to the antenna 4, wherein the energy coupled by the first coupler from the transmission link of the antenna 5 is equal to the energy coupled from the space of the antenna 4 to the antenna 5, and the phase is opposite.

Wherein, the antenna 5 can be used as another antenna.

Wherein, the first coupler includes a first signal amplitude and phase adjustment module 601, a first signal detection coupling section 602, a first coupling section 603, a control module 604 and a detection module 605, and one end of the first signal amplitude and phase adjustment module 601 is connected to The receiving link of the antenna 4 is connected, the other end of the first signal amplitude and phase adjustment module 601 is connected to the first coupling section 603, and the first signal amplitude and phase adjustment module 601 is also connected to the control module 604, and the first coupling section 603 Coupled with the antenna 5 , the first signal detection coupling section 602 is coupled with the antenna 4 and connected with a detection module 605 , and the detection module 605 is connected with the control module 604 .

When the system for improving antenna isolation works, the antenna 4 obtains the amplitude and phase of the energy coupled to the antenna 5 from space, and the first coupling section 603 couples energy from the transmission link of the antenna 5, through the first The signal amplitude and phase adjustment module 601 adjusts the amplitude and phase of the energy coupled from the transmission link of the antenna 5 by the first coupling section 603 and transmits it to the antenna 4 .

The first signal detection coupling section 602 couples the energy on the antenna 4, the detection module 605 detects the energy coupled by the first signal detection coupling section 602, and detects that the energy coupled from the antenna 4 to the antenna 5 from space is consistent with the first Whether the energy coupled by the coupler cancels each other on the receiving link of the antenna 4, the control module 604 controls the first signal amplitude and phase adjustment module 601 to adjust the first coupling section 603 from the transmitting link of the antenna 5 according to the detection result of the detecting module 605 The magnitude and phase of the coupled energy.

It can be seen from the above that in a system for improving antenna isolation in the embodiment of the present invention, the first coupler couples energy from the transmission link of the antenna 5, and the energy coupled by the first coupler is coupled with the antenna 4 from the space. The amplitude of the energy coupled to the antenna 5 is equal and the phase is opposite. The energy coupled by the first coupler is transmitted to the antenna 4, thereby canceling the energy coupled from the antenna 4 to the antenna 5 from space, and improving the isolation of the antenna 4 .

It can be understood that, for the energy coupled by the first coupler from the transmission link of the antenna 5 and the energy coupled by the antenna 4 from the space to the antenna 5, the amplitude is equal, and there may be a certain error in the opposite phase, as long as the first The energy coupled by a coupler from the transmission link of the antenna 5 and the energy coupled from the antenna 4 to the antenna 5 from the space are basically canceled, so that the isolation of the antenna can be improved. That is, after the coupled energy is adjusted by the first signal amplitude and phase adjustment module 601, the allowable amplitude error range of the energy coupled by the first coupler from the transmission link of the antenna 5 is that the antenna 4 is coupled to the antenna 5 from the space ±20% of the amplitude of the energy, the allowable range of the phase error of the energy coupled from the transmission link of the antenna 5 is ±10 degrees of the phase of the energy coupled from the space of the antenna 4 to the antenna 5 .

Similarly, in a system for improving antenna isolation in the above embodiment, it also includes:

The antenna 5 is used to obtain the amplitude and phase of the energy coupled to the antenna 4 from space.

The second coupler is used to couple energy from the transmission link of the antenna 4 according to the amplitude and phase of the energy coupled to the antenna 4 by the antenna 5 from space, and couple the energy coupled to the transmission link from the antenna 4 transmitted to the antenna 5, wherein the energy coupled by the second coupler from the transmission link of the antenna 4 is equal to the energy coupled from the space to the antenna 4 by the antenna 5, and the phase is opposite.

Wherein, the antenna 4 can be used as another antenna.

Wherein, the second coupler includes a second signal amplitude and phase adjustment module 611, a second signal detection coupling section 612, a second coupling section 613, a control module 604 and a detection module 605, and one end of the second signal amplitude and phase adjustment module 611 is connected to The receiving link of the antenna 5 is connected, the other end of the second signal amplitude and phase adjustment module 611 is connected to the second coupling section 613, the second signal amplitude and phase adjustment module 611 is also connected to the control module 604, and the second coupling module 613 is coupled to the antenna 4 , the second signal detection coupling section 612 is coupled to the antenna 5 and connected to the detection module 605 , and the detection module 605 is connected to the control module 604 .

When the system for improving antenna isolation works, the antenna 5 obtains the amplitude and phase of the energy coupled to the antenna 4 from the space, and the second coupling section 613 couples the energy from the transmission link of the antenna 4, through the second The signal amplitude and phase adjustment module 611 adjusts the amplitude and phase of the energy coupled from the transmission link of the antenna 4 by the second coupling section 613 and transmits it to the antenna 5 .

The second signal detection coupling section 612 couples the energy on the antenna 5, and the detection module 605 detects the energy coupled by the second signal detection coupling section 612, and detects that the energy coupled from the antenna 5 to the antenna 4 from the space and the second Whether the energy coupled by the coupler cancels each other on the receiving link of the antenna 5, the control module 604 controls the second signal amplitude and phase adjustment module 611 to adjust the second coupling section 613 from the transmitting link of the antenna 4 according to the detection result of the detecting module 605 The magnitude and phase of the coupled energy.

It can be seen from the above that in a system for improving antenna isolation in the embodiment of the present invention, the second coupler couples energy from the transmission link of the antenna 4, and the energy coupled by the second coupler is coupled with the antenna 5 from the space. The amplitude of the energy coupled to the antenna 4 is equal and the phase is opposite. The energy coupled by the second coupler is transmitted to the antenna 5, thereby canceling the energy coupled from the antenna 5 to the antenna 4 from space, and improving the isolation of the antenna 5 .

It can be understood that, for the energy coupled by the second coupler from the transmission link of the antenna 4 and the energy coupled by the antenna 5 from the space to the antenna 4, the amplitude is equal, and there may be a certain error in the opposite phase, as long as the first The energy coupled by the two couplers from the transmission link of the antenna 4 and the energy coupled by the antenna 5 to the antenna 4 from the space are basically canceled, so that the isolation of the antenna 5 can be improved. That is, after the coupled energy is adjusted by the second signal amplitude and phase adjustment module 611, the allowable range of the amplitude error of the energy coupled by the second coupler from the transmission link of the antenna 4 is that the antenna 5 is coupled to the antenna 4 from the space ±20% of the amplitude of the energy, the allowable range of the phase error of the energy coupled from the transmission link of the antenna 4 is ±10 degrees of the phase of the energy coupled from the antenna 5 to the antenna 4 from space.

It can be seen that in the embodiment of the present invention, through the active coupler 6, on the antenna 4, the energy coupled to the antenna 5 from the space and the energy coupled to the transmission link of the antenna 5 are cancelled; the same , on the antenna 5, the energy coupled to the antenna 4 from the space and the energy coupled to the transmission link of the antenna 4 are also canceled, thereby improving the isolation between the antenna 4 and the antenna 5.

It can be understood that, for a system that uses an active coupler to improve antenna isolation, antenna 4 and antenna 5 can simultaneously have the functions of receiving signals and transmitting signals. At this time, antenna 4 and antenna 5 need to use active couplers Antenna 4 can have the function of receiving signal, and antenna 5 has the function of transmitting signal, and at this moment, antenna 4 and antenna 5 can adopt the first coupler; Antenna 5 has the function of receiving signal, and antenna 4 has the function of transmitting signal, here , antenna 4 and antenna 5 can use the second coupler.

Embodiment 4 of the present invention provides an active coupler 6, as shown in FIG. 4, including:

The first coupler is used for coupling energy from the transmission link of the antenna 5 according to the amplitude and phase of the energy coupled to the antenna 5 from the antenna 4 from space, and the energy coupled to the transmission link from the antenna 5 It is transmitted to the antenna 4, wherein the energy coupled by the first coupler from the transmission link of the antenna 5 is equal to the energy coupled from the space of the antenna 4 to the antenna 5, and the phase is opposite.

Wherein, the first coupler includes a first signal amplitude and phase adjustment module 601, a first signal detection coupling section 602, a first coupling section 603, a control module 604 and a detection module 605, and one end of the first signal amplitude and phase adjustment module 601 is connected to The receiving link of the antenna 4 is connected, the other end of the first signal amplitude and phase adjustment module 601 is connected to the first coupling section 603, and the first signal amplitude and phase adjustment module 601 is also connected to the control module 604, and the first coupling section 603 Coupled with the antenna 5 , the first signal detection coupling section 602 is coupled with the antenna 4 and connected with a detection module 605 , and the detection module 605 is connected with the control module 604 .

The first coupling section 603 couples energy from the transmission link of the antenna 5, and transmits the coupled energy to the first signal amplitude and phase adjustment module 601, and the first signal amplitude and phase adjustment module 601 transmits the coupled energy to For the antenna 4, at this time, the first signal detection coupling section 602 couples the energy transmitted to the antenna 4, and the detection module 605 detects the energy coupled by the first signal detection coupling section 602, and detects that the antenna 4 Whether the energy coupled to the antenna 5 from the space and the energy coupled by the first coupler cancel each other on the receiving link of the antenna 4, the control module 604 controls the first signal amplitude and phase adjustment module 601 to adjust according to the detection result of the detection module 605 The first coupling section 603 couples the amplitude and phase of energy from the transmission link of the antenna 5 .

The first signal amplitude and phase adjustment module 601 includes a first amplifier 6011 and a first phase modulator 6012, and the control module 604 controls the first amplifier 6011 to adjust the amplitude of the coupled energy, so that the coupling from the transmission link of the antenna 5 The amplitude of the energy coupled to the antenna 5 from the antenna 4 from the space is equal, and the control module 604 controls the first phase modulator 6012 so that the energy coupled from the transmission link of the antenna 5 is equal to the energy coupled from the antenna 4 from the space. The phase of the energy coupled to the antenna 5 is reversed.

The second coupler is used to couple energy from the transmission link of the antenna 4 according to the amplitude and phase of the energy coupled to the antenna 4 by the antenna 5 from space, and couple the energy coupled to the transmission link from the antenna 4 transmitted to the antenna 5, wherein the energy coupled by the second coupler from the transmission link of the antenna 4 is equal to the energy coupled from the space to the antenna 4 by the antenna 5, and the phase is opposite.

Wherein, the second coupler includes a second signal amplitude and phase adjustment module 611, a second signal detection coupling section 612, a second coupling section 613, a control module 604 and a detection module 605, and one end of the second signal amplitude and phase adjustment module 611 is connected to The receiving link of the antenna 5 is connected, the other end of the second signal amplitude and phase adjustment module 611 is connected to the second coupling section 613, the second signal amplitude and phase adjustment module 611 is also connected to the control module 604, and the second coupling module 613 is coupled to the antenna 4 , the second signal detection coupling section 612 is coupled to the antenna 5 and connected to the detection module 605 , and the detection module 605 is connected to the control module 604 .

The second coupling section 613 couples energy from the transmission link of the antenna 4, and transmits the coupled energy to the second signal amplitude and phase adjustment module 611, and the second signal amplitude and phase adjustment module 611 transmits the coupled energy to For the antenna 5, at this time, the second signal detection coupling section 612 couples the energy transmitted to the antenna 5, and the detection module 605 detects the energy coupled by the second signal detection coupling section 612, and the detection antenna 5 is from Whether the energy coupled to the antenna 4 in space and the energy coupled by the second coupler cancel each other on the receiving link of the antenna 5, the control module 604 controls the second signal amplitude and phase adjustment module 611 to adjust the second signal amplitude and phase according to the detection result of the detection module 605. The second coupling section 613 couples the amplitude and phase of energy from the transmission link of the antenna 4 .

The second signal amplitude and phase adjustment module 611 includes a second amplifier 6111 and a second phase modulator 6112, and the control module 604 controls the second amplifier 6111 to adjust the amplitude of the coupled energy, so that the coupled energy from the transmission link of the antenna 4 The energy received is equal to the amplitude of the energy coupled from the antenna 5 to the antenna 4 from the space, and the control module 604 controls the second phase modulator 6112, so that the energy coupled from the transmission link of the antenna 4 is equal to the energy coupled from the antenna 5 from the space. The phase of the energy coupled to the antenna 4 is reversed.

In practical applications, some modules or devices can be added to the antenna to improve the application of the antenna in different scenarios. For example, a non-amplifying module or device, such as a TV signal receiver, is added to the transmitting chain of the antenna 4 and/or the antenna 5 to simultaneously receive TV signals. The added module can be added before the antenna transmission link, after the antenna transmission link, or both before and after, and the added module has no effect on the coupler. The coupler can be a passive coupler or is an active coupler.

Embodiment 5 of the present invention proposes a method for improving antenna isolation, as shown in FIG. 5 , including:

Step S501, Antenna A couples energy to Antenna B from space.

Specifically, in a limited space, there will be mutual influence between antennas. Between two or more antennas, the closer the distance is, the closer the operating frequency is, and the stronger the mutual spatial energy coupling is. In space, antenna A will couple energy to other antennas from space, that is, the energy that antenna A couples to other antennas that are connected to antenna A in space.

Step S502, the coupler couples energy from the transmission link of the antenna B according to the amplitude and phase of the energy coupled to the antenna B from the space, and the energy coupled to the coupler is the same as the antenna B coupled to the antenna A from the space The energies above have the same amplitude and opposite phase.

It can be understood that there may be a certain error if the amplitudes are equal and the phases are opposite. The coupler may be the passive coupler in the above embodiment or the active coupler in the above embodiment. Here, it will not be repeated.

Similarly, the antenna B can also be coupled from the transmission link of the antenna A to the energy amplitude of the antenna A coupled from the space through the coupler, and the phase is reversed, and then the energy on the antenna B is canceled, Therefore, the isolation of antenna B is improved.

It can be seen that in the embodiment of the present invention, by using a coupler, a part of energy is coupled on the transmission link of antenna A, so that it has the same amplitude as the energy coupled from antenna B through space, and the phase is reversed, and the link is realized cancel each other, thereby improving the isolation of the antenna.

Regarding the system for improving antenna isolation in the above-mentioned embodiment, the system for improving antenna isolation using a passive coupler is described through antenna 1 and antenna 2; for the system for improving antenna isolation using an active coupler , are illustrated by antenna 4 and antenna 5. It can be understood that a system for improving antenna isolation can also be applied to multiple antennas (for example, when there are three antennas: one antenna receives signals and other antennas transmit signals; or one antenna transmits signals and other antennas receive signals), A system for improving antenna isolation in an embodiment of the present invention is not limited to being applied to two antennas or three antennas.

The above is only a preferred embodiment of the present invention, it should be pointed out that, for those of ordinary skill in the art, without departing from the principle of the present invention, some improvements and modifications can also be made, and these improvements and modifications can also be made. It should be regarded as the protection scope of the present invention.

Claims (4)

1. a system that improves isolation between antennas is characterized in that, comprising:

Antenna is for amplitude and the phase place of obtaining other antenna energy that is coupled to from the space;

Coupler, the amplitude and the phase place that are used for the energy of described other antenna of being coupled to from the space according to described antenna, coupling energy from the transmitting chain of described other antenna, and the Energy Transfer that will be coupled from the transmitting chain of described other antenna is to described antenna, wherein, described other antenna that from the space, is coupled to that described coupler coupling energy and described antenna from the transmitting chain of described other antenna obtain can equate single spin-echo by discharge amplitude;

Wherein, described coupler is passive coupler, or source coupler is arranged;

Described passive coupler comprises the first coupler and the second coupler, the coupled section of described the first coupler and described other antenna-coupled, and the phase section of described the first coupler is connected with the receiver of described antenna; The coupled section of described the second coupler and described antenna-coupled, the phase section of described the second coupler is connected with the receiver of described other antenna;

The coupled section of described the first coupler is used for coupling energy from the transmitting chain of described other antenna, and the Energy Transfer that the coupled section that the phase section of described the first coupler will described the first coupler is coupled from the transmitting chain of described other antenna is to described antenna;

The coupled section of described the second coupler is used for coupling energy from the transmitting chain of described antenna, and the Energy Transfer that the coupled section that the phase section of described the second coupler will described the second coupler is coupled from the transmitting chain of described antenna is to described other antenna;

Described have source coupler to comprise the first coupler and the second coupler, amplitude and the phase place of the energy on described other antennas that described the first coupler is used for being coupled to from the space according to antenna, coupling energy from the transmitting chain of described other antennas, the Energy Transfer that will be coupled to from the transmitting chain of described other antennas is given described antenna;

Described the second coupler, amplitude and the phase place of the energy on described other antennas that are used for being coupled to from the space according to described antenna, coupling energy from the transmitting chain of described other antennas, the Energy Transfer that will be coupled to from the transmitting chain of described other antennas is given described antenna.

2. the system as claimed in claim 1, it is characterized in that, described have source coupler to comprise the first coupler and the second coupler, described the first coupler comprises first signal width of cloth phase adjustment module, first signal detects coupled section, the first coupled section, control module and detection module, described first signal width of cloth phase adjustment module one end is connected with the receiver of described antenna, the other end of described first signal width of cloth phase adjustment module is connected with described the first coupled section, described first signal width of cloth phase adjustment module is connected with described control module, described the first coupled section and described other antenna-coupled, described first signal detects coupled section and is connected with described antenna-coupled and with described detection module, and described detection module is connected with described control module;

Described the second coupler comprises secondary signal width of cloth phase adjustment module, secondary signal detects coupled section, the second coupled section, described control module and described detection module, described secondary signal width of cloth phase adjustment module one end is connected with the receiver of described other antenna, the other end of described secondary signal width of cloth phase adjustment module is connected with described the second coupled section, described secondary signal width of cloth phase adjustment module is connected with described control module, described the second coupling module and described antenna-coupled, described secondary signal detects coupled section and is connected with described other antenna-coupled and with described detection module, and described detection module is connected with described control module.

3. a method that improves isolation between antennas is characterized in that, comprising:

Antenna obtains amplitude and the phase place of energy on other antenna that is coupled to from the space;

Amplitude and the phase place of the energy on described other antenna that coupler is coupled to from the space according to described antenna, coupling energy on the transmitting chain of described other antenna, so that the energy on described other antenna that described antenna is coupled to from the space and described coupler can equate reverse-phase by discharge amplitude from what the transmitting chain of described other antenna was coupled to;

Wherein, described coupler is passive coupler, or source coupler is arranged;

Described passive coupler comprises the first coupler and the second coupler, the coupled section of described the first coupler and described other antenna-coupled, and the phase section of described the first coupler is connected with the receiver of described antenna; The coupled section of described the second coupler and described antenna-coupled, the phase section of described the second coupler is connected with the receiver of described other antenna;

The coupled section of described the first coupler is used for coupling energy from the transmitting chain of described other antenna, and the Energy Transfer that the coupled section that the phase section of described the first coupler will described the first coupler is coupled from the transmitting chain of described other antenna is to described antenna;

The coupled section of described the second coupler is used for coupling energy from the transmitting chain of described antenna, and the Energy Transfer that the coupled section that the phase section of described the second coupler will described the second coupler is coupled from the transmitting chain of described antenna is to described other antenna;

Described have source coupler to comprise the first coupler and the second coupler, amplitude and the phase place of the energy on described other antennas that described the first coupler is used for being coupled to from the space according to antenna, coupling energy from the transmitting chain of described other antennas, the Energy Transfer that will be coupled to from the transmitting chain of described other antennas is given described antenna;

Described the second coupler, amplitude and the phase place of the energy on described other antennas that are used for being coupled to from the space according to described antenna, coupling energy from the transmitting chain of described other antennas, the Energy Transfer that will be coupled to from the transmitting chain of described other antennas is given described antenna.

4. method as claimed in claim 3, it is characterized in that, amplitude and the phase place of the energy on described other antenna that described coupler is coupled to from the space according to described antenna, coupling energy on the transmitting chain of described other antenna, so that the energy on described other antenna that described antenna is coupled to from the space and described coupler be from equating by discharge amplitude that the transmitting chain of described other antenna is coupled to, reverse-phase comprises:

Amplitude and the phase place of the energy on described other antenna that passive coupler is coupled to from the space according to described antenna, coupling energy on the transmitting chain of described other antenna, so that the energy on described other antenna that described antenna is coupled to from the space and described coupler can equate reverse-phase by discharge amplitude from what the transmitting chain of described other antenna was coupled to; Or

Amplitude and phase place that energy on described other antenna that source coupler is coupled to from the space according to described antenna is arranged, coupling energy on the transmitting chain of described other antenna, so that the energy on described other antenna that described antenna is coupled to from the space and described coupler can equate reverse-phase by discharge amplitude from what the transmitting chain of described other antenna was coupled to.

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