CN101677149B - Method for improving insulation of antennas, system and device - Google Patents
Method for improving insulation of antennas, system and device Download PDFInfo
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- CN101677149B CN101677149B CN 200810211343 CN200810211343A CN101677149B CN 101677149 B CN101677149 B CN 101677149B CN 200810211343 CN200810211343 CN 200810211343 CN 200810211343 A CN200810211343 A CN 200810211343A CN 101677149 B CN101677149 B CN 101677149B
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Abstract
The embodiment of the invention discloses a method for improving the insulation of antennas, a system and a device. The system comprises an antenna and a coupler, wherein the antenna is used for acquiring the amplitudes and phases of other antennas energy coupled in space, the coupler is used for coupling energy from transmitting chains of other antennas according to the amplitudes and phases of other antennas energy in space coupled by the antenna and transmitting the energy coupled from the transmitting chains of other antennas to the antenna, and the energy coupled from the transmitting chains of other antennas by the coupler and the energy coupled from other antennas in space by the antenna have equal amplitudes and opposite phases. The embodiment of the invention adopts the coupler to improve the insulation between antennas in limited space.
Description
Technical field
The present invention relates to communication technical field, particularly relate to a kind of method, system and device that improve isolation between antennas.
Background technology
In wireless communication system, it is best using the transmission means of vertically polarized wave, and vertically polarized wave is the polarized wave of plane of polarization and the earth method parallel line surface, is adapted at the earth's surface and transmits, the covering that is beneficial to radio communication base station with communicate by letter.In the transmission path of mobile communication, have influencing each other of direct wave, reflection and scattering wave between the various objects, this is multipath fading namely, in radio communication base station, can adopt diversity technique to solve the impact of multipath decline, this diversity technique is by searching and utilizing in the wireless propagation environment independently multipath signal to realize, several diversity receiving technologies commonly used comprise: space diversity, polarization diversity, frequency diversity, time diversity.Space diversity is to adopt a plurality of reception antennas to receive signal, then will receive signal and merge, for guarantee to receive signal between irrelevance, require the distance between the antenna enough large, to satisfy the insulation request of system.Polarization diversity is the method that adopts orthogonal polarization, and under mobile environment, the horizontal route in space and vertical-path are incoherent, and signal also presents incoherent fading characteristic.At this moment can respectively fill two pairs of antennas at transmitting terminal and receiving terminal, a horizontally-polarized antenna, a vertical polarized antenna obtains two incoherent signals then.Same, polarization diversity also requires to satisfy between two polarization the insulation request of system.
In the prior art, adopt like-polarized antenna, as in the communication system of space diversity, adopt paired vertical polarized antenna, the antenna of this perpendicular polarization is required the distance that installation interval is certain, could satisfy communication system to the requirement of isolation.
In realizing process of the present invention, the inventor finds that there is following problem at least in prior art:
Same polarization placement isolation is low, and antenna wants the certain distance in interval could satisfy system to the requirement of isolation when mounted, and the nearlyer isolation of distance is poorer.
Summary of the invention
The embodiment of the invention provides a kind of method, system and device that improve isolation between antennas, to improve isolation between antennae.
The embodiment of the invention proposes a kind of system that improves isolation between antennas on the one hand, 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.
The embodiment of the invention has also proposed a kind of passive coupler, comprising: the first coupler and the second coupler, wherein:
The coupled section of described the first coupler and other antenna-coupled, the phase section of described the first coupler is connected with the receiver of 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 embodiment of the invention has also proposed a kind of source coupler that has, and comprising: the first coupler and the second coupler, wherein:
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.
The embodiment of the invention has also proposed a kind of method that improves isolation between antennas, 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.
Can be learnt by upper technical scheme, by using coupler coupling energy from the transmitting chain of other antenna, the energy of this coupler coupling equates with antenna is coupled to the energy of other antenna from the space amplitude, single spin-echo, the Energy Transfer of this coupler coupling is to antenna, thereby the energy that is coupled to other antenna with antenna from the space offsets, and has improved the isolation of antenna.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art, apparently, accompanying drawing in the following describes only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is a kind of system construction drawing that improves isolation between antennas of the embodiment of the invention one;
Fig. 2 is the schematic diagram of a kind of passive coupler of the embodiment of the invention two;
Fig. 3 is a kind of system construction drawing that improves isolation between antennas of the embodiment of the invention three;
Fig. 4 is a kind of schematic diagram that source coupler is arranged of the embodiment of the invention four;
Fig. 5 is a kind of method flow diagram that improves isolation between antennas of the embodiment of the invention five.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.
A kind of system that improves isolation between antennas of the embodiment of the invention comprises:
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 this other antenna of being coupled to from the space according to this antenna, coupling energy from the transmitting chain of this other antenna, and the Energy Transfer that will be coupled from the transmitting chain of this other antenna is to this antenna, wherein, this other antenna that from the space, is coupled to that described coupler coupling energy and this antenna from the transmitting chain of this other antenna obtain can equate single spin-echo by discharge amplitude.
As seen from the above, a kind of system that improves isolation between antennas of the embodiment of the invention, use coupler coupling energy from the transmitting chain of other antenna, the energy of this coupler coupling equates with antenna is coupled to the energy of other antenna from the space amplitude, single spin-echo, the Energy Transfer of this coupler coupling is to antenna, thereby offsets with antenna is coupled to other antenna from the space energy, improved the isolation of antenna.
The below is described in detail a kind of system that improves isolation between antennas of the embodiment of the invention, as shown in Figure 1, a kind of system that improves isolation between antennas comprises: antenna 1, antenna 2 and passive coupler 3, passive coupler 3 comprise the first coupler 30 and the second coupler 31.
Antenna 1 obtains amplitude and the phase place of the energy of the antenna 2 that is coupled to from the space;
The first coupler 30, amplitude and the phase place of the energy on the antenna 2 that from the space, is coupled to according to antenna 1, coupling energy from the transmitting chain of antenna 2, the Energy Transfer that will be coupled to from the transmitting chain of antenna 2 is to antenna 1, wherein, this first coupler 30 equates single spin-echo from the energy that the transmitting chain of antenna 2 is coupled with antenna 1 is coupled to the energy on the antenna 2 from the space amplitude.
Wherein, this antenna 2 can be used as other antenna.
Wherein, this first coupler 30 comprises the first coupled section 301 and the first phase section 302, this first coupled section 301 be connected phase section 302 and connect, the transmitting chain coupling of this first coupled section 301 and antenna 2, this first phase section 302 is connected with the receiver of antenna 1.
As seen from the above, the embodiment of the invention a kind of improves in the system of isolation between antennas, the first coupler 30 coupling energy from the transmitting chain of antenna 2, the energy of these the first coupler 30 couplings equates with antenna 1 is coupled to the energy of antenna 2 from the space amplitude, single spin-echo, the Energy Transfer of this first coupler 30 couplings is to antenna 1, thereby offsets with antenna 1 is coupled to antenna 2 from the space energy, improved the isolation of antenna 1.
Be understandable that, equate with antenna 1 is coupled to the energy on the antenna 2 from the space amplitude from the energy that the transmitting chain of antenna 2 is coupled for this first coupler 30, can there be certain error in single spin-echo, as long as energy that the first coupler 30 is coupled from the transmitting chain of antenna 2 and antenna 1 are coupled to antenna 2 from the space energy is offseted substantially, can improve the isolation of antenna.Namely the phase error allowed band of the range error allowed band of the energy that is coupled to from the transmitting chain of antenna 2 of the first coupled section 301 energy that to be antenna 1 amplitude that is coupled to antenna 2 energy from the space ± 20%, the first phase section 302 be coupled to from the transmitting chain of antenna 2 is the phase place ± 10 degree of antenna 12 energy from the Space Coupling to the antenna.
Need to prove, the first coupled section 301 and the first phase section 302 for the first coupler 30, the first coupled section 301 is connected with the first phase section 302, the structure of the first coupled section 301 and the first phase section 302 is not restricted, as long as the first coupled section 301 of the first coupler 30 coupling energy from the transmitting chain of antenna 2, then be transferred to antenna 1 by the first phase section 302, the energy of the energy of this first coupler 30 couplings and the antenna 2 that antenna 1 is coupled to from the space offseted get final product.
In like manner, improve in the system of isolation between antennas above-described embodiment a kind of, also comprise:
Antenna 2 obtains amplitude and the phase place of the energy of the antenna 1 that is coupled to from the space;
The second coupler 31, amplitude and the phase place of the energy on the antenna 1 that from the space, is coupled to according to antenna 2, coupling energy from the transmitting chain of antenna 1, the Energy Transfer that will be coupled to from the transmitting chain of antenna 1 is to antenna 2, wherein, this second coupler 31 equates single spin-echo from the energy that the transmitting chain of antenna 1 is coupled with antenna 2 is coupled to the energy on the antenna 1 from the space amplitude.
Wherein, this antenna 1 can be used as other antenna.
Wherein, this second coupler 31 comprises the second coupled section 311 and the second phase section 312, this second coupled section 311 be connected phase section 312 and connect, the transmitting chain coupling of this second coupled section 311 and antenna 1, this second phase section 312 is connected with the receiver of antenna 2.
As seen from the above, the embodiment of the invention a kind of improves in the system of isolation between antennas, the second coupler 31 coupling energy from the transmitting chain of antenna 1, the energy of these the second coupler 31 couplings equates with antenna 2 is coupled to the energy of antenna 1 from the space amplitude, single spin-echo, the energy of this second coupler 31 couplings sends to antenna 2, thereby offsets with antenna 2 is coupled to antenna 1 from the space energy, has improved the isolation of antenna 2.
Wherein, be understandable that, this second coupler 31 equates with antenna 2 is coupled to the energy on the antenna 1 from the space amplitude from the energy that the transmitting chain of antenna 1 is coupled, single spin-echo, can there be certain error, as long as energy that the second coupler 31 is coupled from the transmitting chain of antenna 1 and antenna 2 are coupled to antenna 1 from the space energy is offseted substantially, can improve the isolation of antenna.Namely the phase error allowed band of the range error allowed band of the energy that is coupled to from the transmitting chain of antenna 1 of the second coupled section 311 energy that to be antenna 2 amplitude that is coupled to antenna 1 energy from the space ± 20%, the second phase section 312 be coupled to from the transmitting chain of antenna 1 is the phase place ± 10 degree of antenna 21 energy from the Space Coupling to the antenna.
In like manner, need to prove, the second coupled section 311 and the second phase section 312 for the second coupler 31, the second coupled section 311 is connected with the second phase section 312, the structure of the second coupled section 311 and the second phase section 312 is not restricted, as long as the second coupled section 311 of the second coupler 31 coupling energy from the transmitting chain of antenna 1, then be transferred to antenna 2 by the second phase section 312, the energy of the antenna 1 that energy that this second coupler 31 is coupled to from the transmitting chain of antenna 1 and antenna 2 be coupled to from the space offseted mutually get final product.
Wherein, for passive coupler 3, before adding this passive coupler 3 between antenna 1 and the antenna 2, need to obtain in advance amplitude and the phase place of the energy of the antenna 2 that from the space, is coupled on the antenna 1, amplitude and the first suitable coupler 30 of Selecting phasing according to the energy of the antenna 2 that from the space, is coupled on the antenna 1, so that the energy that the first coupler 30 can be coupled from the transmitting chain of antenna 2 equates single spin-echo with antenna 1 is coupled to the energy on the antenna 2 from the space amplitude; In like manner, need to obtain in advance amplitude and the phase place of the energy of the antenna 1 that from the space, is coupled on the antenna 2, amplitude and the second suitable coupler 31 of Selecting phasing according to the energy of the antenna 1 that from the space, is coupled on the antenna 2, so that the energy that the second coupler 31 can be coupled from the transmitting chain of antenna 1 equates single spin-echo with antenna 2 is coupled to the energy on the antenna 1 from the space amplitude.
Be understandable that, in above-mentioned a kind of system embodiment that improves isolation between antennas, antenna 1 and antenna 2 can have the function that receives signal and transmit simultaneously, and at this moment, antenna 1 and antenna 2 need to adopt passive couplers 3; Also can be that antenna 1 has the function that receives signal, antenna 2 has the function that transmits, and at this moment, antenna 1 and antenna 2 can adopt the first coupler 30; Also can be that antenna 1 has the function that transmits, antenna 2 has the function that receives signal, and this moment, antenna 1 and antenna 2 can adopt the second coupler 31.
The embodiment of the invention two provides a kind of passive coupler 3, as shown in Figure 2, comprising:
The first coupler 30, amplitude and the phase place of the energy on the antenna 2 that from the space, is coupled to according to antenna 1, coupling energy from the transmitting chain of antenna 2, the Energy Transfer that will be coupled to from the transmitting chain of antenna 2 is to antenna 1, wherein, this first coupler 30 equates single spin-echo from the energy that the transmitting chain of antenna 2 is coupled with antenna 1 is coupled to the energy on the antenna 2 from the space amplitude.
Wherein, this first coupler 30 comprises the first coupled section 301 and the first phase section 302, this first coupled section 301 be connected phase section 302 and connect, the transmitting chain coupling of this first coupled section 301 and antenna 2, this first phase section 302 is connected with the receiver of antenna 1.
This first coupled section 301 is used for coupling energy from the transmitting chain of antenna 2, and the Energy Transfer that the first phase section 302 is coupled the first coupled section 301 from the transmitting chain of antenna 2 is to antenna 1.
The second coupler 31, amplitude and the phase place of the energy on the antenna 1 that from the space, is coupled to according to antenna 2, coupling energy from the transmitting chain of antenna 1, the Energy Transfer that will be coupled to from the transmitting chain of antenna 1 is to antenna 2, wherein, this second coupler 31 equates single spin-echo from the energy that the transmitting chain of antenna 1 is coupled with antenna 2 is coupled to the energy on the antenna 1 from the space amplitude.
Wherein, this second coupler 31 comprises the second coupled section 311 and the second phase section 312, this second coupled section 311 be connected phase section 312 and connect, the transmitting chain coupling of this second coupled section 311 and antenna 1, this second phase section 312 is connected with the receiver of antenna 2.
This second coupled section 311 is used for coupling energy from the transmitting chain of antenna 1, and the Energy Transfer that the second phase section 312 is coupled the second coupled section 311 from the transmitting chain of antenna 1 is to antenna 2.
The embodiment of the invention three provides a kind of system that improves isolation between antennas, as shown in Figure 3, comprising: antenna 4, antenna 5 and source coupler 6 is arranged, this has source coupler 6 to comprise the first coupler and the second coupler.
Antenna 4 is used for obtaining amplitude and the phase place of the energy on the antenna 5 that is coupled to from the space;
The first coupler, amplitude and the phase place of the energy on the antenna 5 that is used for being coupled to from the space according to antenna 4, coupling energy from the transmitting chain of antenna 5, the Energy Transfer that will be coupled to from the transmitting chain of antenna 5 is to antenna 4, wherein, this first coupler equates single spin-echo from the energy that the transmitting chain of antenna 5 is coupled with antenna 4 is coupled to the energy on the antenna 5 from the space amplitude.
Wherein, this antenna 5 can be used as other antenna.
Wherein, this first coupler comprises first signal width of cloth phase adjustment module 601, first signal detects coupled section 602, the first coupled section 603, control module 604 and detection module 605, these first signal width of cloth phase adjustment module 601 1 ends are connected with the receiver of antenna 4, these first signal width of cloth phase adjustment module 601 other ends are connected with the first coupled section 603, this first signal width of cloth phase adjustment module 601 also is connected with this control module 604, this first coupled section 603 and antenna 5 couplings, this first signal detects coupled section 602 and is connected with antenna 4 couplings and with detection module 605, and this detection module 605 is connected with this control module 604.
This is a kind of when improving the system works of isolation between antennas, antenna 4 obtains amplitude and the phase place of the energy on the antenna 5 that is coupled to from the space, the first coupled section 603 coupling energy from the transmitting chain of antenna 5, regulate amplitude and the phase place of the first coupled section 603 coupling energy from the transmitting chain of antenna 5 by first signal width of cloth phase adjustment module 601, be transferred to antenna 4.
This first signal detects the energy on coupled section 602 coupled antennas 4, the energy that 605 pairs of described first signals of this detection module detect coupled section 602 couplings detects, whether the energy that detects antenna 4 is coupled to antenna 5 from the space energy and the coupling of the first coupler offsets on the receiver of antenna 4 mutually, and control module 604 is according to amplitude and the phase place of testing result control first signal width of cloth phase adjustment module 601 adjustings first coupled section 603 of detection module 605 coupling energy from the transmitting chain of antenna 5.
As seen from the above, the embodiment of the invention a kind of improves in the system of isolation between antennas, the first coupler coupling energy from the transmitting chain of antenna 5, the energy of this first coupler coupling equates with antenna 4 is coupled to the energy of antenna 5 from the space amplitude, single spin-echo, the Energy Transfer of this first coupler coupling is to antenna 4, thereby offsets with antenna 4 is coupled to antenna 5 from the space energy, improved the isolation of antenna 4.
Be understandable that, equate with antenna 4 is coupled to the energy on the antenna 5 from the space amplitude from the energy that the transmitting chain of antenna 5 is coupled for this first coupler, can there be certain error in single spin-echo, as long as energy that the first coupler is coupled from the transmitting chain of antenna 5 and antenna 4 are coupled to antenna 5 from the space energy is offseted substantially, can improve the isolation of antenna.After namely regulating by 601 pairs of energy that are coupled to of first signal width of cloth phase adjustment module, the range error allowed band of the energy that the first coupler is coupled to from the transmitting chain of antenna 5 is antenna 4 amplitude that is coupled to antenna 5 energy from the space ± 20%, and the phase error allowed band of the energy that is coupled to from the transmitting chain of antenna 5 is the phase place of antenna 45 energy from the Space Coupling to the antenna ± 10 degree.
In like manner, improve in the system of isolation between antennas above-described embodiment a kind of, also comprise:
Antenna 5 is used for obtaining amplitude and the phase place of the energy on the antenna 4 that is coupled to from the space.
The second coupler, amplitude and the phase place of the energy on the antenna 4 that is used for being coupled to from the space according to antenna 5, coupling energy from the transmitting chain of antenna 4, the Energy Transfer that will be coupled to from the transmitting chain of antenna 4 is to antenna 5, wherein, this second coupler equates single spin-echo from the energy that the transmitting chain of antenna 4 is coupled with antenna 5 is coupled to the energy on the antenna 4 from the space amplitude.
Wherein, antenna 4 can be used as other antenna.
Wherein, this second coupler comprises secondary signal width of cloth phase adjustment module 611, secondary signal detects coupled section 612, the second coupled section 613, control module 604 and detection module 605, these secondary signal width of cloth phase adjustment module 611 1 ends are connected with the receiver of antenna 5, secondary signal width of cloth phase adjustment module 611 other ends are connected with the second coupled section 613, secondary signal width of cloth phase adjustment module 611 also is connected with control module 604, the second coupling module 613 and antenna 4 couplings, described secondary signal detects coupled section 612 and is connected with antenna 5 couplings and with detection module 605, and this detection module 605 is connected with this control module 604.
This is a kind of when improving the system works of isolation between antennas, antenna 5 obtains amplitude and the phase place of the energy on the antenna 4 that is coupled to from the space, the second coupled section 613 coupling energy from the transmitting chain of antenna 4, regulate amplitude and the phase place of the second coupled section 613 coupling energy from the transmitting chain of antenna 4 by secondary signal width of cloth phase adjustment module 611, be transferred to antenna 5.
This secondary signal detects the energy on coupled section 612 coupled antennas 5, the energy that 605 pairs of described secondary signals of this detection module detect coupled section 612 couplings detects, whether the energy that detects antenna 5 is coupled to antenna 4 from the space energy and the coupling of the second coupler offsets on the receiver of antenna 5 mutually, and control module 604 is according to amplitude and the phase place of testing result control secondary signal width of cloth phase adjustment module 611 adjustings second coupled section 613 of detection module 605 coupling energy from the transmitting chain of antenna 4.
As seen from the above, the embodiment of the invention a kind of improves in the system of isolation between antennas, the second coupler coupling energy from the transmitting chain of antenna 4, the energy of this second coupler coupling equates with antenna 5 is coupled to the energy of antenna 4 from the space amplitude, single spin-echo, the Energy Transfer of this second coupler coupling is to antenna 5, thereby offsets with antenna 5 is coupled to antenna 4 from the space energy, improved the isolation of antenna 5.
Be understandable that, equate with antenna 5 is coupled to the energy on the antenna 4 from the space amplitude from the energy that the transmitting chain of antenna 4 is coupled for this second coupler, can there be certain error in single spin-echo, as long as energy that the second coupler is coupled from the transmitting chain of antenna 4 and antenna 5 are coupled to antenna 4 from the space energy is offseted substantially, can improve the isolation of antenna 5.After namely regulating by 611 pairs of energy that are coupled to of secondary signal width of cloth phase adjustment module, the range error allowed band of the energy that the second coupler is coupled to from the transmitting chain of antenna 4 is antenna 5 amplitude that is coupled to antenna 4 energy from the space ± 20%, and the phase error allowed band of the energy that is coupled to from the transmitting chain of antenna 4 is the phase place of antenna 54 energy from the Space Coupling to the antenna ± 10 degree.
As seen, in the embodiment of the invention, by source coupler 6 is arranged, so that on antenna 4, the energy on the antenna 5 that is coupled to from the space offsets with the energy that transmitting chain from antenna 5 is coupled to; Same, on antenna 5, the energy on the antenna 4 that is coupled to from the space also offsets with the energy that transmitting chain from antenna 4 is coupled to, thereby has improved the isolation of 5 on antenna 4, antenna.
Be understandable that have for employing in the system of raising isolation between antennas of source coupler, antenna 4 and antenna 5 can have the function that receives signal and transmit simultaneously, and at this moment, antenna 4 and antenna 5 need to adopt source coupler; Antenna 4 can have the function that receives signal, and antenna 5 has the function that transmits, and at this moment, antenna 4 and antenna 5 can adopt the first coupler; Antenna 5 has the function that receives signal, and antenna 4 has the function that transmits, and at this moment, antenna 4 and antenna 5 can adopt the second coupler.
The embodiment of the invention four provides a kind of source coupler 6 that has, and as shown in Figure 4, comprising:
The first coupler, amplitude and the phase place of the energy on the antenna 5 that is used for being coupled to from the space according to antenna 4, coupling energy from the transmitting chain of antenna 5, the Energy Transfer that will be coupled to from the transmitting chain of antenna 5 is to antenna 4, wherein, this first coupler equates single spin-echo from the energy that the transmitting chain of antenna 5 is coupled with antenna 4 is coupled to the energy on the antenna 5 from the space amplitude.
Wherein, this first coupler comprises first signal width of cloth phase adjustment module 601, first signal detects coupled section 602, the first coupled section 603, control module 604 and detection module 605, these first signal width of cloth phase adjustment module 601 1 ends are connected with the receiver of antenna 4, these first signal width of cloth phase adjustment module 601 other ends are connected with the first coupled section 603, this first signal width of cloth phase adjustment module 601 also is connected with this control module 604, this first coupled section 603 and antenna 5 couplings, this first signal detects coupled section 602 and is connected with antenna 4 couplings and with detection module 605, and this detection module 605 is connected with this control module 604.
This first coupled section 603 coupling energy from the transmitting chain of antenna 5, and with this Energy Transfer that is coupled to first signal width of cloth phase adjustment module 601, first signal width of cloth phase adjustment module 601 with this Energy Transfer that is coupled to antenna 4, at this moment, first signal detects coupled section 602 and can be coupled to the energy that is transferred on the antenna 4, the energy that 605 pairs of described first signals of described detection module detect coupled section 602 couplings detects, whether the energy that detects antenna 4 is coupled to antenna 5 from the space energy and the coupling of the first coupler offsets on the receiver of antenna 4 mutually, and control module 604 is according to amplitude and the phase place of testing result control first signal width of cloth phase adjustment module 601 adjustings first coupled section 603 of detection module 605 coupling energy from the transmitting chain of antenna 5.
This first signal width of cloth phase adjustment module 601 comprises the first amplifier 6011 and the first phase modulator 6012,6011 pairs of energy that are coupled to of control module 604 control the first amplifiers carry out amplitude adjusted, so that the energy that is coupled to from the transmitting chain of antenna 5 equates with antenna 4 is coupled to the energy on the antenna 5 from the space amplitude, control module 604 control the first phase modulator 6012 is so that the energy that is coupled to from the transmitting chain of antenna 5 and antenna 4 are coupled to the energy on the antenna 5 from the space reverse-phase.
The second coupler, amplitude and the phase place of the energy on the antenna 4 that is used for being coupled to from the space according to antenna 5, coupling energy from the transmitting chain of antenna 4, the Energy Transfer that will be coupled to from the transmitting chain of antenna 4 is to antenna 5, wherein, this second coupler equates single spin-echo from the energy that the transmitting chain of antenna 4 is coupled with antenna 5 is coupled to the energy on the antenna 4 from the space amplitude.
Wherein, this second coupler comprises secondary signal width of cloth phase adjustment module 611, secondary signal detects coupled section 612, the second coupled section 613, control module 604 and detection module 605, these secondary signal width of cloth phase adjustment module 611 1 ends are connected with the receiver of antenna 5, secondary signal width of cloth phase adjustment module 611 other ends are connected with the second coupled section 613, secondary signal width of cloth phase adjustment module 611 also is connected with control module 604, the second coupling module 613 and antenna 4 couplings, described secondary signal detects coupled section 612 and is connected with antenna 5 couplings and with detection module 605, and this detection module 605 is connected with this control module 604.
This second coupled section 613 coupling energy from the transmitting chain of antenna 4, and with this Energy Transfer that is coupled to secondary signal width of cloth phase adjustment module 611, secondary signal width of cloth phase adjustment module 611 with this Energy Transfer that is coupled to antenna 5, at this moment, secondary signal detects coupled section 612 can be to being transferred to the Energy Coupling on the antenna 5, the energy that 605 pairs of described secondary signals of described detection module detect coupled section 612 couplings detects, whether the energy that detects antenna 5 is coupled to antenna 4 from the space energy and the coupling of the second coupler offsets on the receiver of antenna 5 mutually, and control module 604 is according to amplitude and the phase place of testing result control secondary signal width of cloth phase adjustment module 611 adjustings second coupled section 613 of detection module 605 coupling energy from the transmitting chain of antenna 4.
This secondary signal width of cloth phase adjustment module 611 comprises the second amplifier 6111 and the second phase modulator 6112,6111 pairs of energy that are coupled to of control module 604 control the second amplifiers carry out amplitude adjusted, so that the energy that is coupled to from the transmitting chain of antenna 4 equates with antenna 5 is coupled to the energy on the antenna 4 from the space amplitude, control module 604 control the second phase modulator 6112 is so that the energy that is coupled to from the transmitting chain of antenna 4 and antenna 5 are coupled to the energy on the antenna 4 from the space reverse-phase.
In the application of reality, can add some modules or device at antenna, to improve the application of antenna in different scenes.For example, add module or device without amplification at the transmitting chain of antenna 4 and/or antenna 5, such as TV signal receiver, with the while received television signal.The module of this adding can be before the antenna transmission link, also can be after the antenna transmission link, also can before and after all add, and the module that adds is on the not impact of this coupler, this coupler can be passive coupler, also can be that source coupler is arranged.
The embodiment of the invention five proposes a kind of method that improves isolation between antennas, as shown in Figure 5, comprising:
Step S501, antenna A is coupled to the energy on the antenna B from the space.
Concrete, in limited space, have reciprocal influence between antenna, between two or more antennas, the distance of being separated by is nearer, and operating frequency is more approaching, and mutual dimensional energy coupling is just stronger.In the space, antenna A will be coupled to the energy on other antenna from the space, namely antenna A be coupled in the space with associated other antenna of antenna A on energy.
Step S502, coupler is according to the amplitude of the energy on the antenna B that is coupled to from the space and phase place coupling energy from the transmitting chain of antenna B, and the amplitude of the energy on the energy that this coupler is coupled to and the antenna B that antenna A is coupled to from the space is identical, reverse-phase.
Be understandable that, this amplitude is equal, and single spin-echo is to have certain error.This coupler can be the source coupler that has in the passive coupler in above-described embodiment or above-described embodiment.At this, no longer repeat.
Same, antenna B also can by this coupler from the transmitting chain of antenna A be coupled to the antenna A that from the space, is coupled on can discharge amplitude identical, reverse-phase, then the energy on the antenna B is offseted, thereby improves the isolation of antenna B.
As seen, in the embodiment of the invention, by using coupler, in the transmitting chain of the antenna A part energy that is coupled, make it with from antenna B by Space Coupling to energy to reach amplitude identical, reverse-phase, realize cancelling out each other at link, thereby improved the isolation of antenna.
For a kind of system that improves isolation between antennas of above-described embodiment, the system for the raising isolation between antennas that adopts passive coupler sets forth by antenna 1 and antenna 2; The system that the raising isolation between antennas of source coupler is arranged for employing sets forth by antenna 4 and antenna 5.Be understandable that, a kind of system that improves isolation between antennas also can be applied in a plurality of antennas (during if any three antennas: an antenna receiving signal, other antenna transmission signal; Or an antenna transmission signal, other antenna receiving signal), a kind of system that improves isolation between antennas of the embodiment of the invention is not limited to and is applied to two antennas, or in three antennas.
The above only is preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be looked 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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| CN 200810211343 CN101677149B (en) | 2008-09-19 | 2008-09-19 | Method for improving insulation of antennas, system and device |
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| CN 200810211343 CN101677149B (en) | 2008-09-19 | 2008-09-19 | Method for improving insulation of antennas, system and device |
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| CN101677149B true CN101677149B (en) | 2013-04-24 |
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| CN102683854B (en) * | 2012-04-28 | 2016-01-06 | 华为技术有限公司 | A kind of antenna and antenna port isolation control method |
| CN104283007A (en) * | 2014-09-26 | 2015-01-14 | 电子科技大学 | Feed network for reducing mutual coupling between antenna array units |
| CN106058464B (en) * | 2016-05-17 | 2018-12-14 | 深圳飞特尔科技有限公司 | Adaptive antenna interference blanking unit, method and its aerial array, communication equipment |
| CN108400442A (en) * | 2018-02-05 | 2018-08-14 | 广东欧珀移动通信有限公司 | Antenna module, electronic device and improvement aerial radiation refer to calibration method |
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| CN1264188A (en) * | 1999-01-27 | 2000-08-23 | 半导体射频***公司 | Isolation improved circuit for double-polarization antenna |
| US20050059362A1 (en) * | 2003-08-29 | 2005-03-17 | Nokia Corporation | Method and apparatus providing integrated load matching using adaptive power amplifier compensation |
| CN2826837Y (en) * | 2005-03-10 | 2006-10-11 | 台扬科技股份有限公司 | Isolation circuit of same carrier frequency transmitting-receiving transmission path |
| CN101114840A (en) * | 2007-08-30 | 2008-01-30 | 中兴通讯股份有限公司 | Method and device for enhancing transmitting-receiving isolation of mobile terminal |
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| CN1264188A (en) * | 1999-01-27 | 2000-08-23 | 半导体射频***公司 | Isolation improved circuit for double-polarization antenna |
| US20050059362A1 (en) * | 2003-08-29 | 2005-03-17 | Nokia Corporation | Method and apparatus providing integrated load matching using adaptive power amplifier compensation |
| CN2826837Y (en) * | 2005-03-10 | 2006-10-11 | 台扬科技股份有限公司 | Isolation circuit of same carrier frequency transmitting-receiving transmission path |
| CN101114840A (en) * | 2007-08-30 | 2008-01-30 | 中兴通讯股份有限公司 | Method and device for enhancing transmitting-receiving isolation of mobile terminal |
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