CN104409855A - Novel phased-array antenna - Google Patents
Novel phased-array antenna Download PDFInfo
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- CN104409855A CN104409855A CN201410763171.XA CN201410763171A CN104409855A CN 104409855 A CN104409855 A CN 104409855A CN 201410763171 A CN201410763171 A CN 201410763171A CN 104409855 A CN104409855 A CN 104409855A
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- phase shift
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- radiating element
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Abstract
The invention provides a novel phased-array antenna which comprises antenna radiation components arranged on a PCB board and a phase shift feed network, wherein the radiation components are arranged on the upper surface of the PCB board in an array manner, and the phase shift feed network is arranged at the middle layer of the PCB board and adopts liquid crystal as a voltage-controlled phase shift material; every line or every column of array type radiation components are connected through microstrip lines, and phase shift chips are arranged among very line or every column of microstrip lines; liquid crystal areas of the phase shift feed network are uniformly and symmetrically arranged in the array of the radiation components. The novel phased-array antenna adopts liquid crystal phase shift to achieve a phase shift effect; the liquid crystal is manufactured in the laminated PCB board, so that manufacture is convenient, and beam scanning can be realized; therefore, positioning can be realized through a single radio frequency link, the system deployment is greatly simplified, and the cost is reduced; the liquid crystal phase shift and the phase shift chips are combined to realize two-dimensional scanning of beams, so that a lot of traditional phase shift networks are reduced, and the reliability of equipment in the running process is improved.
Description
Technical field
The invention belongs to the communications field, particularly relate to a kind of phased array antenna using new material.
Background technology
The free stream of ETC belongs to highway monitoring management domain, application band is 5800MHz, application scenarios is urban road, reader is erected on the portal frame of road, communicate with the board units of automobile, can monitoring vehicle, known the positional information of vehicle by communication, monitoring management can be carried out to the violation problem of vehicle.Because the track of reality is narrow, only have 3.4 meters, if think the positional information knowing vehicle accurately, just need Positioning Precision Control in a very little scope, therefore how can locate accurately and just become sixty-four dollar question in this system, and the prerequisite of precise positioning how to design the antenna that a kind of structure is simple, cost is low.
Summary of the invention
The problem to be solved in the present invention is to provide the phased array antenna that a kind of structure is simple, cost is low.
For solving the problem, the technical solution used in the present invention: a kind of novel phased array antenna, comprise antenna radiating element and phase shift feeding network, described antenna radiating element and described phase shift feeding network are all arranged on pcb board, described antenna radiating element array is arranged at the upper surface of pcb board, described phase shift feeding network is arranged at the intermediate layer of pcb board, described phase shift feeding network adopts liquid crystal as shift phase by voltage controlled material, every a line of antenna radiating element that described array is arranged or each row are connected by microstrip line, phase shift chip is connected with by microstrip line between every a line or each row microstrip line, the liquid crystal region of described phase shift feeding network evenly and be arranged at symmetrically in the array of antenna radiating element.
The lower surface of described pcb board is antenna stratum.
Described antenna radiating element array is often gone and/or is often classified as even number of antenna radiation component.Adopt even number radiation component, antenna beam inborn nature is beneficial to.
Described liquid crystal region is uniformly distributed to both sides centered by separated time in described even number of antenna radiation component.Symmetric configuration, convenient processing.
Described phase shift chip is located on the middle separated time of described even number of antenna radiation component.The phase shifting device that this structure needs is minimum.
Distance between each described antenna radiating element meets between each antenna radiating element and there is not interference.
The advantage that the present invention has and good effect are: 1, the present invention adopts the mode of liquid crystal phase shift to reach the effect of phase shift, can liquid crystal be produced in the circuit board of lamination, easy to make, thus can beam scanning be realized, so just can realize orientation problem by single radio frequency link, system is disposed greatly simplify, cost reduces.2, the present invention adopts the mode that liquid crystal phase shift and phase shifter chip combine, and achieves the two-dimensional scan of wave beam, and the layout comparison of whole antenna is reasonable, can reduce traditional a large amount of phase shifter network, improve the reliability in equipment running process.3, this form provides a kind of method that brand-new solution ETC freely flows orientation problem and expands the coverage area, and its positioning precision is high, and only needs to set up for just working, and simple structure, cost is low.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the theory diagram that the present invention is applied to ETC antenna system;
In figure: 1 radiation component 2 liquid crystal 3 phase shift chip 4PCB plate.
Embodiment
Now with reference to the accompanying drawings comparatively detailed description is carried out to the present invention, as shown in Figure 1, a kind of novel phased array antenna, comprise antenna radiating element and phase shift feeding network, described antenna radiating element and described phase shift feeding network are all arranged on pcb board, described antenna radiating element array is arranged at the upper surface of pcb board, described phase shift feeding network is arranged at the intermediate layer of pcb board, described phase shift feeding network adopts liquid crystal as shift phase by voltage controlled material, every a line of antenna radiating element that described array is arranged or each row are connected by microstrip line, phase shift chip is connected with by microstrip line between every a line or each row microstrip line, the liquid crystal region of described phase shift feeding network evenly and be arranged at symmetrically in the array of antenna radiating element.
The lower surface of described pcb board is antenna stratum.
Described antenna radiating element array is often gone and/or is often classified as even number (the present embodiment is 6) antenna radiating element.
Described liquid crystal region is uniformly distributed to both sides centered by separated time in described even number of antenna radiation component.
Described phase shift chip is located on the middle separated time of described even number of antenna radiation component.
Antenna radiating element of the present invention, because this no-stop charging system operating frequency is higher, and equipment install thickness smaller, we adopt be microstrip line connect form, employing be external import sheet material.As can be seen from the figure each antenna radiating element is duplicate.Antenna port adopts SMA connector, is connected with the radio-frequency channel of radio frequency circuit board by RF cable.This ETC antenna system is our a kind of application mode, and the method for present patent application can adopt other form multiple.The number of antenna radiating element also can adjust according to the requirement of actual location.
As shown in Figure 1, phase shift feeding network of the present invention is fairly simple, and liquid crystal is directly embedded in the PCB of lamination as voltage-controlled material, by controlling the voltage of this liquid crystal material, thus changes the effect of phase place change, thus reaches the effect of phase shift.Can avoid after have employed this mode using more phase shifter, can reduce costs greatly.
Apply the operation principle of this antenna composition ETC antenna system:
As shown in Figure 2, ETC phased array antenna system mainly comprises antenna part (comprising phase-shift network), radio-frequency (RF) transmit-receive circuit and digital processing part.The phase-shift network of this programme have employed the phase shifter that new material (liquid crystal) makes, and greatly can reduce the complexity of system.This phase shifter, by adopting liquid crystal as shift phase by voltage controlled material, when signal is by after liquid crystal region, can produce the deflection of phase place.Together with this kind of liquid crystal phase shifter is applicable to being produced on pcb board, make laminar structure, be convenient to array antenna feed, fairly simple phase array network can be made into like this, the phase place of liquid crystal phase shifter can be changed by control voltage, thus the object of beam scanning can be reached.When wave beam can scan, the coverage of wave beam can be adjusted, also can be known final incoming wave sense by the wave beam comparing multiple directions, thus the object of phased array antenna can be reached.The receiving-transmitting chain that the antenna of this kind of mode needs is fairly simple, and only need a receiving-transmitting chain, signal processing mainly adopts FPGA process, and signal transacting promptly and accurately.In order to reach the precision of beam scanning, the precision of the system that ensure that effectively can be controlled by the following aspects.
Multiple antenna radiating element is have employed in Antenna Design link, and ensure that the mutual coupling between antenna radiating element is very little by the distance arranging antenna radiating element, thus do not exist between radiation component and mutually disturb, thus it is poor to obtain radio-frequency (RF) phse accurately between antenna radiating element.
Multi-antenna receive section is duplicate antenna radiating element, the independent performance index of these radiation components are duplicate, working frequency range is also the same, antenna radiating element spacing is closer, can be arranged on one piece of antenna plate (pcb board), its Main Function is that each antenna radiating element can both receive radiofrequency signal, and because antenna radiating element maintains a certain distance, the signal that therefore each antenna radiating element receives is that amplitude is identical but phase place is different.Antenna radiating element and phase shift feeding network are produced on one piece of circuit board, phase shift feeding network adopts the mode (as Fig. 1) of liquid crystal phase shift, liquid crystal is directly embedded in the PCB of lamination as voltage-controlled material, by controlling the voltage of this liquid crystal material, thus change the effect of phase place change, thus reach the effect of phase shift.Can avoid after have employed this mode using more phase shifter, can reduce costs greatly.A lot of radio frequency path can be reduced than the phase shift of numeric field, also can reduce costs.The phase shift of liquid crystal and traditional phase shifter chip are combined (this antenna had both comprised liquid crystal phase shift and had also comprised the phase shift that phase shift chip produces) just can be made into the antenna of the beam scanning of 2 dimensions, such radio frequency link only needs a radio frequency link, can greatly reduce costs.
The signal that antenna receives mainly is become intermediate-freuqncy signal through down-conversion by the radio-frequency (RF) receiving circuit in radio frequency link, and then through intermediate frequency amplifier circuit and AD sampling be exactly mainly in order to signal is amplified, then deliver to again in logic chip (fpga chip of digital processing part) after AD sampling, just can carry out follow-up signal transacting.
The digital signal that logic chip mainly exports by the radio frequency transmitter circuitry in radio frequency link becomes analog signal through DA conversion, then amplifies through intermediate frequency and become radiofrequency signal after up-conversion, is then gone out by aerial radiation.
Digital processing part is mainly responsible for the process receiving signal, and controls the scanning mode of wave beam, can be changed the phase place of liquid crystal phase shifter, thus can reach the object of beam scanning by control voltage.When wave beam can scan, the coverage of wave beam can be adjusted, know final incoming wave sense by the wave beam comparing multiple directions.
Above embodiments of the invention have been described in detail, but described content being only preferred embodiment of the present invention, can not being considered to for limiting practical range of the present invention.All equalizations done according to the scope of the invention change and improve, and all should still belong within this patent covering scope.
Claims (6)
1. a novel phased array antenna, it is characterized in that: comprise antenna radiating element and phase shift feeding network, described antenna radiating element and described phase shift feeding network are all arranged on pcb board, described antenna radiating element array is arranged at the upper surface of pcb board, described phase shift feeding network is arranged at the intermediate layer of pcb board, described phase shift feeding network adopts liquid crystal as shift phase by voltage controlled material, every a line of antenna radiating element that described array is arranged or each row are connected by microstrip line, phase shift chip is connected with by microstrip line between every a line or each row microstrip line, the liquid crystal region of described phase shift feeding network evenly and be arranged at symmetrically in the array of antenna radiating element.
2. novel phased array antenna according to claim 1, is characterized in that: the lower surface of described pcb board is antenna stratum.
3. novel phased array antenna according to claim 1, is characterized in that: described antenna radiating element array is often gone and/or is often classified as even number of antenna radiation component.
4. novel phased array antenna according to claim 3, is characterized in that: described liquid crystal region is uniformly distributed to both sides centered by separated time in described even number of antenna radiation component.
5. novel phased array antenna according to claim 4, is characterized in that: described phase shift chip is located on the middle separated time of described even number of antenna radiation component.
6. the novel phased array antenna according to any one of claim 1-5, is characterized in that: the distance between each described antenna radiating element meets between each antenna radiating element and there is not interference.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410763171.XA CN104409855A (en) | 2014-12-11 | 2014-12-11 | Novel phased-array antenna |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410763171.XA CN104409855A (en) | 2014-12-11 | 2014-12-11 | Novel phased-array antenna |
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| CN104409855A true CN104409855A (en) | 2015-03-11 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107046176A (en) * | 2017-02-23 | 2017-08-15 | 电子科技大学 | Beam scanning micro-strip plane reflection array antenna and preparation method based on micro crystal material |
| CN108199128A (en) * | 2017-12-13 | 2018-06-22 | 瑞声科技（南京）有限公司 | A kind of antenna system and mobile terminal |
| CN108777372A (en) * | 2018-04-27 | 2018-11-09 | 中国科学院微电子研究所 | High-gain phased array microstrip antenna |
| CN110346998A (en) * | 2019-07-03 | 2019-10-18 | 电子科技大学 | A kind of conformal liquid crystal optical phased array system |
| CN110658646A (en) * | 2018-08-10 | 2020-01-07 | 北京京东方传感技术有限公司 | Phase shifter and liquid crystal antenna |
| CN111146588A (en) * | 2018-11-06 | 2020-05-12 | 艾尔康系统有限责任公司 | Phased array antenna |
| CN113690633A (en) * | 2020-05-18 | 2021-11-23 | 北京道古视界科技有限公司 | Liquid crystal array antenna beam synthesis and control method based on binary holographic coding |
| CN115332765A (en) * | 2022-09-19 | 2022-11-11 | 航天恒星科技有限公司 | Multi-beam laminate assembly for phased array antenna |
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| CN101283480A (en) * | 2005-10-11 | 2008-10-08 | 松下电器产业株式会社 | Phased array antenna |
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| CN102385053A (en) * | 2010-09-01 | 2012-03-21 | 株式会社电装 | Radar apparatus provided with series-feed array-antennas each including a plurality of antenna elements |
| CN102597168A (en) * | 2009-11-04 | 2012-07-18 | 默克专利股份有限公司 | Compounds for a liquid crystal medium and use thereof for high-frequency components |
| CN103326115A (en) * | 2012-11-14 | 2013-09-25 | 武汉德澳科技有限公司 | Integrated electronic speed controller phase array antenna, and module and system comprising same |
| CN103975483A (en) * | 2011-09-27 | 2014-08-06 | 默克专利股份有限公司 | Electronically steerable planar phased array antenna |
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2014
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| CN101283480A (en) * | 2005-10-11 | 2008-10-08 | 松下电器产业株式会社 | Phased array antenna |
| CN101454941A (en) * | 2006-05-24 | 2009-06-10 | 韦夫班德尔公司 | Variable dielectric constant-based antenna and array |
| CN102597168A (en) * | 2009-11-04 | 2012-07-18 | 默克专利股份有限公司 | Compounds for a liquid crystal medium and use thereof for high-frequency components |
| CN102385053A (en) * | 2010-09-01 | 2012-03-21 | 株式会社电装 | Radar apparatus provided with series-feed array-antennas each including a plurality of antenna elements |
| CN103975483A (en) * | 2011-09-27 | 2014-08-06 | 默克专利股份有限公司 | Electronically steerable planar phased array antenna |
| CN103326115A (en) * | 2012-11-14 | 2013-09-25 | 武汉德澳科技有限公司 | Integrated electronic speed controller phase array antenna, and module and system comprising same |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107046176A (en) * | 2017-02-23 | 2017-08-15 | 电子科技大学 | Beam scanning micro-strip plane reflection array antenna and preparation method based on micro crystal material |
| CN108199128A (en) * | 2017-12-13 | 2018-06-22 | 瑞声科技（南京）有限公司 | A kind of antenna system and mobile terminal |
| CN108777372A (en) * | 2018-04-27 | 2018-11-09 | 中国科学院微电子研究所 | High-gain phased array microstrip antenna |
| CN110658646A (en) * | 2018-08-10 | 2020-01-07 | 北京京东方传感技术有限公司 | Phase shifter and liquid crystal antenna |
| CN111146588A (en) * | 2018-11-06 | 2020-05-12 | 艾尔康系统有限责任公司 | Phased array antenna |
| CN110346998A (en) * | 2019-07-03 | 2019-10-18 | 电子科技大学 | A kind of conformal liquid crystal optical phased array system |
| CN113690633A (en) * | 2020-05-18 | 2021-11-23 | 北京道古视界科技有限公司 | Liquid crystal array antenna beam synthesis and control method based on binary holographic coding |
| CN115332765A (en) * | 2022-09-19 | 2022-11-11 | 航天恒星科技有限公司 | Multi-beam laminate assembly for phased array antenna |
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Application publication date: 20150311 |
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