CN105186137A - Multi-resonant structure based single-feed anti-multipath adaptive antenna - Google Patents
Multi-resonant structure based single-feed anti-multipath adaptive antenna Download PDFInfo
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- CN105186137A CN105186137A CN201510632538.9A CN201510632538A CN105186137A CN 105186137 A CN105186137 A CN 105186137A CN 201510632538 A CN201510632538 A CN 201510632538A CN 105186137 A CN105186137 A CN 105186137A
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Abstract
The invention relates to an adaptive antenna and especially a multi-resonant structure based single-feed anti-multipath adaptive antenna. The multi-resonant structure based single-feed anti-multipath adaptive antenna is provided with an omnidirectional antenna, a controllable resonator and a support part, wherein the controllable resonator is provided with at least three resonant units, the resonant units surround the omnidirectional antenna at intervals by taking the omnidirectional antenna as a central shaft to form a symmetrically distributed resonant unit array, and the omnidirectional antenna and the controllable resonator are arranged on the support part. The omnidirectional antenna positioned in the center of the antenna radiates a carrier wave signal, and the carrier wave signal resonates with the resonator around the carrier wave signal, so that the carrier wave signal is subjected to secondary radiation. A resonant state of the resonator is controlled by a control signal, and the amplitude and phase of the secondary radiation signal of the resonator are controlled by changing the resonant state, so that an amplitude pattern and a phase pattern of the whole antenna are controlled. The amplitude and phase of radiation can be controlled at the same time, so that the anti-multipath effect is better achieved in a complicated multipath environment.
Description
Technical field
The present invention relates to adaptive antenna, especially relate to a kind of SF single feed anti-multipath adaptive antenna based on multiple resonant structures for complex environment communication.
Background technology
Adaptive antenna can the maximum beam direction of control antenna directional diagram, and can realize multi-beam.Have a wide range of applications in fields such as communication, radar, electronic countermeasuress.As digital smart antenna, phased array antenna etc. can realize similar functions.Especially under complicated multi-path environment, adaptive antenna can control radiation amplitude and the phase place of multiple directions, therefore can realize the superposition of signal in communication target region thus eliminate multi-path jamming raising link-quality.In this environment, adaptive antenna is relative to single wave beam or the general automatically controlled scanning antenna of span of control limit of control and phase place flexibly can not have obvious advantage.
The automatically controlled scanning antenna of traditional phase array utilizes phase shifter to realize wave surface synthesis, thus achieves scanning, and its cost is high, and weight is large, and algorithm is complicated.Digital beamforming antenna (smart antenna) needs multichannel transceiver channel, and its system synthesis is originally higher, and computing cost is large, is therefore generally used for military domain, seldom adopts at industry and civil area.
Automatically controlled scanning antenna structure disclosed in Chinese patent 201110408303.3, cost is low, lightweight, algorithm is simple.But the active frequencies being used for realizing wave beam control selects surface only have transmitted wave amplitude control ability and do not have phase control capability, therefore cannot control the shake equiphase surface in face of ripple, inner radiator antenna can only be utilized to realize vertical plane high-gain and horizontal plane high-gain cannot be realized.Automatically controlled scanning antenna disclosed in Chinese patent 201410152975.6 is based on spatial Phase-shifting Method surface.This antenna can utilize phase control to realize high-gain beam scanning or multi-beam scanning.But because it can only realize phase control, can not control effectively to the amplitude of wave beam, therefore the Signal averaging of uncontrollable multiple radiation direction in the multi-path environment of reality, has limitation when anti-multipath is applied.
Summary of the invention
The object of this invention is to provide a kind of SF single feed anti-multipath adaptive antenna based on multiple resonant structures that cost is low, lightweight, can realize the control of omnidirectional phase and magnitude at horizontal plane (namely in azimuth plane).
The present invention is provided with omnidirectional antenna, controllable resonant device and strutting piece;
Described controllable resonant device is provided with at least 3 resonant elements, and between centers spacer ring is around forming symmetrical resonant element array centered by omnidirectional antenna for each resonant element, and omnidirectional antenna and controllable resonant device are located on strutting piece.
Described omnidirectional antenna can adopt the one in the axial omnidirectional antennas such as monopole antenna, dipole antenna, biconical antenna, series fed antenna.
Described controllable resonant device can be provided with 12 resonant elements, and each resonant element is preferably identical rectangle.
The active spatial Phase-shifting Method surface of described controllable resonant device can be band general formula active spatial Phase-shifting Method surface or the active spatial Phase-shifting Method surface of band resistive, has phase control capability at passband or stopband edge.
Described have the shape of resonant element to be rectangle, and structure is consistent, but is controlled by independently control signal.
Compared with the prior art, operation principle of the present invention and beneficial effect as follows:
Operation principle of the present invention is mainly: the omnidirectional antenna radiation carrier signal being positioned at center of antenna, this carrier signal and resonating around the resonator around it, and then outwards secondary radiation.The resonance condition of resonator is controlled by control signal, utilizes the change of resonance condition to control amplitude and the phase place of resonator secondary radiation signal, and then the amplitude pattern of control antenna entirety and phase pattern.In contrast to automatically controlled scanning antenna disclosed in automatically controlled scanning antenna disclosed in above-mentioned Chinese patent 201110408303.3 and Chinese patent 201410152975.6, the present invention can control amplitude and the phase place of radiation simultaneously, under complicated multi-path environment, be therefore more conducive to the effect realizing anti-multipath.
Accompanying drawing explanation
Fig. 1 is embodiment of the present invention structural representation.
Fig. 2 is the schematic top plan view of Fig. 1.
Fig. 3 is amplitude pattern of the present invention and phase pattern schematic diagram.Mark 3 in Fig. 3 is amplitude pattern, and mark 4 is phase pattern.
Fig. 4 is the anti-multipath principle schematic that the embodiment of the present invention realizes.Mark 6,7,8 is three signal route of transmission signals; Mark 9 is target area.
Embodiment
See Fig. 1 ~ 4, the embodiment of the present invention is provided with omnidirectional antenna 1, controllable resonant device 2 and strutting piece 3; Described controllable resonant device 2 is provided with 12 resonant elements, each resonant element centered by omnidirectional antenna 1 between centers spacer ring around forming symmetrical resonant element array, each resonant element is identical rectangle, and omnidirectional antenna 1 and controllable resonant device 2 are located on strutting piece 3.
Described omnidirectional antenna 1 can adopt the one in the axial omnidirectional antennas such as monopole antenna, dipole antenna, biconical antenna, series fed antenna.
The active spatial Phase-shifting Method surface of described controllable resonant device 2 can be band general formula active spatial Phase-shifting Method surface or the active spatial Phase-shifting Method surface of band resistive, has phase control capability at passband or stopband edge.
Resonant element quantity of the present invention can change, and more attainable quantity Pattern control be more flexible, and anti-multipath effect is better.By adjusting the control signal respectively having resonant element around omnidirectional antenna respectively, and then the aerial radiation controlled under certain assigned frequency goes out signal phase place in all directions and amplitude size, thus span of control limit of control direction and phase directional flexibly.
See Fig. 4, under complex environment, the signal of different directions is propagated by different path 6,7,8, superposes and be received in target area 9.When concrete use the present invention is as communication antenna transmitting terminal, the signal strength data that receiving terminal can be utilized to feed back is as the foundation judging signal strength signal intensity.According to this signal strength signal intensity, the resonance condition utilizing the optimized algorithm such as random optimization or genetic algorithm to adjust resonator is optimized to make the signal strength signal intensity of target area, thus realizes better link-quality.Calculate, emulation and this antenna of field data show can reach more than 20dB in the anti-standing wave performance of indoor complex environment.
Claims (5)
1., based on a SF single feed anti-multipath adaptive antenna for multiple resonant structures, it is characterized in that being provided with omnidirectional antenna, controllable resonant device and strutting piece;
Described controllable resonant device is provided with at least 3 resonant elements, and between centers spacer ring is around forming symmetrical resonant element array centered by omnidirectional antenna for each resonant element, and omnidirectional antenna and controllable resonant device are located on strutting piece.
2. a kind of SF single feed anti-multipath adaptive antenna based on multiple resonant structures as claimed in claim 1, is characterized in that described omnidirectional antenna adopts the one in the axial omnidirectional antenna of monopole antenna, dipole antenna, biconical antenna, series fed antenna.
3. a kind of SF single feed anti-multipath adaptive antenna based on multiple resonant structures as claimed in claim 1, is characterized in that described controllable resonant device is provided with 12 resonant elements.
4. a kind of SF single feed anti-multipath adaptive antenna based on multiple resonant structures as claimed in claim 1, is characterized in that each resonant element is identical rectangle.
5. a kind of SF single feed anti-multipath adaptive antenna based on multiple resonant structures as claimed in claim 1, is characterized in that the active spatial Phase-shifting Method surface of described controllable resonant device is for band general formula active spatial Phase-shifting Method surface or the active spatial Phase-shifting Method surface of band resistive.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510632538.9A CN105186137A (en) | 2015-09-29 | 2015-09-29 | Multi-resonant structure based single-feed anti-multipath adaptive antenna |
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| CN201510632538.9A CN105186137A (en) | 2015-09-29 | 2015-09-29 | Multi-resonant structure based single-feed anti-multipath adaptive antenna |
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| CN105186137A true CN105186137A (en) | 2015-12-23 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019047512A1 (en) * | 2017-09-11 | 2019-03-14 | 东南大学 | Compact vertical polarization ultrawide-band omnidirectional antenna containing conformal impedance surface |
| CN111146598A (en) * | 2020-01-20 | 2020-05-12 | 中国电波传播研究所（中国电子科技集团公司第二十二研究所） | Electronic control beam scanning antenna based on active frequency selection surface |
| WO2021164430A1 (en) * | 2020-02-21 | 2021-08-26 | 京东方科技集团股份有限公司 | Transmitting antenna system, receiving antenna system, and communication device |
| CN114069242A (en) * | 2021-11-26 | 2022-02-18 | 东南大学 | Suspension patch antenna with circular impedance surface |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US20040263408A1 (en) * | 2003-05-12 | 2004-12-30 | Hrl Laboratories, Llc | Adaptive beam forming antenna system using a tunable impedance surface |
| CN102110884A (en) * | 2010-12-30 | 2011-06-29 | 中国科学院上海微***与信息技术研究所 | Active phased array antenna adopting passive loading way to control sidelobe level |
| CN102496782A (en) * | 2011-12-09 | 2012-06-13 | 哈尔滨工业大学 | Omni-directional electronic control scanning antenna based on active frequency selection surfaces |
| CN103943961A (en) * | 2014-04-16 | 2014-07-23 | 厦门大学 | Electric scanning antenna based on space phase shift surface |
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2015
- 2015-09-29 CN CN201510632538.9A patent/CN105186137A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040263408A1 (en) * | 2003-05-12 | 2004-12-30 | Hrl Laboratories, Llc | Adaptive beam forming antenna system using a tunable impedance surface |
| CN102110884A (en) * | 2010-12-30 | 2011-06-29 | 中国科学院上海微***与信息技术研究所 | Active phased array antenna adopting passive loading way to control sidelobe level |
| CN102496782A (en) * | 2011-12-09 | 2012-06-13 | 哈尔滨工业大学 | Omni-directional electronic control scanning antenna based on active frequency selection surfaces |
| CN103943961A (en) * | 2014-04-16 | 2014-07-23 | 厦门大学 | Electric scanning antenna based on space phase shift surface |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019047512A1 (en) * | 2017-09-11 | 2019-03-14 | 东南大学 | Compact vertical polarization ultrawide-band omnidirectional antenna containing conformal impedance surface |
| CN111146598A (en) * | 2020-01-20 | 2020-05-12 | 中国电波传播研究所（中国电子科技集团公司第二十二研究所） | Electronic control beam scanning antenna based on active frequency selection surface |
| WO2021164430A1 (en) * | 2020-02-21 | 2021-08-26 | 京东方科技集团股份有限公司 | Transmitting antenna system, receiving antenna system, and communication device |
| CN114069242A (en) * | 2021-11-26 | 2022-02-18 | 东南大学 | Suspension patch antenna with circular impedance surface |
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Application publication date: 20151223 |