CN105428801A - Planar dual-reflection array antenna - Google Patents
Planar dual-reflection array antenna Download PDFInfo
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- CN105428801A CN105428801A CN201510900140.9A CN201510900140A CN105428801A CN 105428801 A CN105428801 A CN 105428801A CN 201510900140 A CN201510900140 A CN 201510900140A CN 105428801 A CN105428801 A CN 105428801A
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- 230000010287 polarization Effects 0.000 claims abstract description 41
- 239000002184 metal Substances 0.000 claims description 23
- 230000015572 biosynthetic process Effects 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 8
- 238000003786 synthesis reaction Methods 0.000 claims description 8
- 230000008054 signal transmission Effects 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 5
- 230000011514 reflex Effects 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 12
- 238000000034 method Methods 0.000 description 11
- 230000008569 process Effects 0.000 description 9
- 238000004590 computer program Methods 0.000 description 7
- 230000008859 change Effects 0.000 description 6
- 239000012634 fragment Substances 0.000 description 5
- 238000012545 processing Methods 0.000 description 5
- 230000006378 damage Effects 0.000 description 4
- 230000009977 dual effect Effects 0.000 description 4
- 238000011160 research Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
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- 238000012986 modification Methods 0.000 description 3
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- 230000007547 defect Effects 0.000 description 2
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/24—Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction
- H01Q21/245—Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction provided with means for varying the polarisation
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
- H01Q13/08—Radiating ends of two-conductor microwave transmission lines, e.g. of coaxial lines, of microstrip lines
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
- H01Q19/10—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
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- Aerials With Secondary Devices (AREA)
Abstract
The invention discloses a planar dual-reflection array antenna. The planar dual-reflection array antenna comprises a polarization selection layer, a main reflection surface, a microstrip patch unit positioned on the main reflection surface and a feed source on the same side with the main reflection surface, wherein the polarization selection layer is used for reflecting an electromagnetic wave signal emitted by the feed source to the main reflection surface; and the microstrip patch unit is used for performing phase compensation on the electromagnetic wave signal reached the main reflection surface and changing the polarization direction of the electromagnetic wave signal to enable the electromagnetic wave signal to transmit to the polarization selection layer to form a synthesized wave beam with an assigned setting direction. Therefore, the section profile height of the planar dual-reflection array antenna is half of that of the conventional reflection array antenna, so that the problem of relatively high section of the antenna is effectively avoided; and meanwhile, the polarization direction of the electromagnetic wave signal is adjusted by the microstrip patch unit of the planar dual-reflection array antenna, so that the performance of the planar dual-reflection array antenna is effectively improved.
Description
Technical field
The present invention relates to communication technical field, particularly relate to a kind of plane bireflectance array antenna.
Background technology
Airfield runway foreign object fragment be also called airfield runway FOD (English: ForeignObjectDebris), be one of greateset risk factor of facing in takeoff phase and landing phases of aircarrier aircraft.Its harm caused comprises aircraft engine damage, tyre break, airframe damage etc.
In order to avoid the harm that airfield runway foreign object fragment causes, need near airfield runway, arrange airfield runway foreign object debris detection system.At present, airfield runway foreign object debris detection system is made up of radar sensing system in actual applications.The operation principle of radar sensing system is: the electromagnetic wave of characteristic frequency launched by radar equipment, analyzes, determine the spatial positional information of exotic fragment by carrying out detection to electromagnetic echo-signal.
The radar system detected for airfield runway foreign object fragment at present generally adopts millimeter wave, and millimeter wave is wavelength between the electromagnetic wave of 1 ~ 10 millimeter.Millimeter wave antenna is one of important component part of millimetre-wave radar.But the millimeter wave antenna detected for airfield runway foreign object fragment at present comprises reflector antenna and research of planar reflectarray antennas etc.Wherein, reflector antenna is made up of the metal mirror of feed and given shape, and the defect of existence is: the distance between feed and reflecting surface is comparatively large, causes the problem that antenna section is higher; Research of planar reflectarray antennas utilizes the microband paste unit of different size, shape to produce different reflection compensation phase places, in order to compensate the path difference of feed to reflector element, the wave beam with particular orientation is formed in array front, the defect existed is: adopt primary event working mechanism, cause the problem that antenna section is higher.
Summary of the invention
In view of this, the embodiment of the present application provides a kind of plane bireflectance array antenna, the problem that the antenna section in order to solve radar antenna array existence in prior art is higher.
A kind of plane bireflectance array antenna, described plane bireflectance array antenna comprises polarization selection layer, primary reflection surface, is positioned at the microband paste unit on described primary reflection surface and is positioned at the feed of homonymy with described primary reflection surface, wherein:
Described polarization selection layer, the electromagnetic wave signal for being launched by described feed reflexes to described primary reflection surface;
Described microband paste unit, for carrying out phase compensation to the electromagnetic wave signal arriving described primary reflection surface, and changes the polarised direction of described electromagnetic wave signal, makes polarization selection layer described in described electromagnetic wave signal transmission to form the synthesis wave beam pointing to direction initialization.
Beneficial effect of the present invention is as follows:
Embodiments provide a kind of plane bireflectance array antenna, described plane bireflectance array antenna comprises polarization selection layer, primary reflection surface, is positioned at the microband paste unit on described primary reflection surface and is positioned at the feed of homonymy with described primary reflection surface, described polarization selection layer, the electromagnetic wave signal for being launched by described feed reflexes to described primary reflection surface; Described microband paste unit, for carrying out phase compensation to the electromagnetic wave signal arriving described primary reflection surface, and changes the polarised direction of described electromagnetic wave signal, makes polarization selection layer described in described electromagnetic wave signal transmission to form the synthesis wave beam pointing to direction initialization.Like this, traditional reflective array antenna cross section profile height reduces by half by plane bireflectance array antenna, effectively avoid the problem that antenna section is higher, microband paste unit simultaneously in plane bireflectance array antenna realizes the adjustment to electromagnetic wave signal polarised direction, effectively improves the performance of plane bireflectance array antenna.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing used required in describing embodiment is briefly introduced, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of prior art midplane reflectarray antenna;
The structural representation of a kind of plane bireflectance array antenna that Fig. 2 provides for the embodiment of the present invention;
Fig. 3 is the structural representation of polarization selection layer described in the embodiment of the present invention;
Fig. 4 is the transmission schematic diagram of polarization selection layer;
Fig. 5 is the position view of microband paste unit on primary reflection surface;
Fig. 6 is the structural representation of microband paste unit;
Fig. 7 (a) is that 8 kinds of microband paste unit realize the E face directional diagram of 45 degree of stepping phase compensation gained plane dual reflector antennas under center operating frequency;
Fig. 7 (b) is that 8 kinds of microband paste unit realize the H face directional diagram of 45 degree of stepping phase compensation gained plane dual reflector antennas under center operating frequency.
Embodiment
In order to realize object of the present invention, embodiments provide a kind of plane bireflectance array antenna, described plane bireflectance array antenna comprises polarization selection layer, primary reflection surface, is positioned at the microband paste unit on described primary reflection surface and is positioned at the feed of homonymy with described primary reflection surface, described polarization selection layer, the electromagnetic wave signal for being launched by described feed reflexes to described primary reflection surface; Described microband paste unit, for carrying out phase compensation to the electromagnetic wave signal arriving described primary reflection surface, and changes the polarised direction of described electromagnetic wave signal, makes polarization selection layer described in described electromagnetic wave signal transmission to form the synthesis wave beam pointing to direction initialization.Like this, traditional reflective array antenna cross section profile height reduces by half by plane bireflectance array antenna, effectively avoid the problem that antenna section is higher, microband paste unit simultaneously in plane bireflectance array antenna realizes the adjustment to electromagnetic wave signal polarised direction, effectively improves the performance of plane bireflectance array antenna.
Below in conjunction with Figure of description, each embodiment of the present invention is described in further detail.Obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making other embodiments all obtained under creative work prerequisite, belong to the scope of protection of the invention.
Fig. 1 is the structural representation of prior art midplane reflectarray antenna.As can be seen from Figure 1, the microband paste unit 103 that traditional research of planar reflectarray antennas comprises feed 101, primary reflection surface 102 and is positioned on primary reflection surface 102.
Particularly, the distance between feed 101 and primary reflection surface 102 is focal distance f.The electromagnetic wave signal produced in feed 101 produces reflection in primary reflection surface 102, wherein, microband paste unit 103 on primary reflection surface 102 is different according to its position in primary reflection surface 102, different phase delay is produced to the electromagnetic wave signal received, and makes it form the synthesis wave beam pointing to direction initialization.
Here it should be noted that, more than one of the microband paste unit comprised in primary reflection surface 102, can arrange multiple as required, is not specifically limited here as the quantity arranged.
For the research of planar reflectarray antennas shown in Fig. 1, because the distance between feed 101 and primary reflection surface 102 is focal distance f, cause antenna section higher, for this reason, the embodiment of the present invention proposes a kind of plane bireflectance array antenna, as shown in Figure 2, the structural representation of a kind of plane bireflectance array antenna provided for the embodiment of the present invention.
Described plane bireflectance array antenna comprises polarization selection layer 201, primary reflection surface 202, is positioned at the microband paste unit 203 on described primary reflection surface 202 and is positioned at the feed 204 of homonymy with described primary reflection surface 202, wherein:
Described polarization selection layer 201, the electromagnetic wave signal for being launched by described feed reflexes to described primary reflection surface;
Described microband paste unit 203, for carrying out phase compensation to the electromagnetic wave signal arriving described primary reflection surface, and change the polarised direction of described electromagnetic wave signal, make polarization selection layer described in described electromagnetic wave signal transmission to form the synthesis wave beam pointing to direction initialization.
Particularly, feed and the primary reflection surface of the plane bireflectance array antenna provided due to the embodiment of the present invention are positioned at homonymy, the electromagnetic wave signal that so feed is launched needs, by polarization selection layer, electromagnetic wave signal is reflexed to primary reflection surface, the electromagnetic wave signal arriving described primary reflection surface by the microband paste unit in primary reflection surface again carries out phase compensation, and change the polarised direction of described electromagnetic wave signal, the polarised direction of the described electromagnetic wave signal of change here can be understood as to be reversed the polarised direction of electromagnetic wave signal, such as: the polarised direction arriving the electromagnetic wave signal of described primary reflection surface is horizontal direction, the polarised direction that so microband paste unit changes described electromagnetic wave signal can be understood as and the polarised direction of electromagnetic wave signal is adjusted to vertical direction by horizontal direction, the polarised direction arriving the electromagnetic wave signal of described primary reflection surface is vertical direction, the polarised direction that so microband paste unit changes described electromagnetic wave signal can be understood as and the polarised direction of electromagnetic wave signal is adjusted to horizontal direction by vertical direction, and make polarization selection layer described in described electromagnetic wave signal transmission to form the synthesis wave beam pointing to direction initialization, so that launch this synthesis wave beam.
Illustrate polarization selection layer described in the embodiment of the present invention and the particular content of microband paste unit below.
Particularly, described polarization selection layer 201 is made up of the parallel metal band grid 301 be printed on dielectric constant microwave base material, as shown in Figure 3, is the structural representation of polarization selection layer described in the embodiment of the present invention.
As can be seen from Figure 3, in polarization selection layer, parallel metal strips grid width is d, and the spacing between adjacent two strip metal band grid is s.
Particularly, described polarization selection layer 201, specifically for the electromagnetic wave signal that reflecting polarised direction is parallel with described metal band grid, and the electromagnetic wave signal that transmission polarised direction is vertical with described metal band grid.
Here still for shown in Fig. 3, described metal band grid parallel direction can refer to the x-axis direction shown in Fig. 3, described metal band grid vertical direction can refer to the y-axis direction shown in Fig. 3.
In another embodiment of the invention, the thickness of described polarization selection layer is determined according to the relative dielectric constant of wavelength corresponding to the operating frequency of plane bireflectance array antenna and described dielectric constant microwave base material.
Particularly, suppose that the bore of plane bireflectance array antenna is 160mm, burnt footpath is f/D=0.5m, then corresponding f=80mm, f/2=40mm.Feed 204 adopts conical corrugated speaker antenna form, gain and the lobe width of corrugated horn antenna pattern can be determined by the bore of reasonable design corrugated horn and the degree of depth, such as, the gain of the feed corrugated horn of design is 10dB, and lobe width is 45 degree.
Suppose that the operating frequency of plane bireflectance array antenna is 76.5GHz, the relative dielectric constant of selected dielectric constant microwave base material is 2.2, the thickness of the polarization selection layer so calculated is 1.32mm, the width of the metal band grid of corresponding selection is 0.1mm, and the width between adjacent metal band grid is 0.3mm.
Fig. 4 is the transmission schematic diagram of polarization selection layer.
As can be seen from Figure 4, the polarization selection layer pair electromagnetic wave signal parallel with described metal band grid almost all reflects, and the polarization selection layer pair electromagnetic wave signal vertical with described metal band grid be all transmissions almost.
Fig. 5 is the position view of microband paste unit on primary reflection surface.Microband paste unit shown in Fig. 5, the phase angle difference of the electromagnetic wave signal arriving described primary reflection surface being carried out to phase compensation representated by the microband paste unit of different gray scale.
Described microband paste unit 203 is printed on low medium electric constant microwave base material, is made up of the semi-open rectangle frame of metal and the metal rectangular paster being positioned at unit center.
Fig. 6 is the structural representation of microband paste unit.Wherein, suppose that the boundary dimensions of microband paste unit is a*a, the Outside Dimensions of the semi-open rectangle frame 501 of metal is b*b, and A/F is L1, and frame is wide is L2.
Metal rectangular paster 502 is of a size of W1*W2.
So by the low thickness of medium electric constant microwave base material of adjustment and the size of a, b, to adjust the resonance frequency of microband paste unit; By adjustment L1, L2, W1 and W2, to adjust the phase compensation angle of microband paste unit.
Particularly, the every 90-degree rotation of metal semi-open rectangle frame opening direction described in described microband paste unit, the phase compensation Angulation changes 180 degree that described microband paste unit produces the electromagnetic wave signal arriving described primary reflection surface.
If the microband paste unit adopting the embodiment of the present invention to provide in actual applications realizes the phase compensation of 0 ~ 360 degree, only need the microband paste unit that the phase compensation of default 0 ~ 180 degree is corresponding respectively, like this, by microband paste unit opening direction 90-degree rotation corresponding respectively for the phase compensation presetting 0 ~ 180 degree, the microband paste unit of phase compensation 180 ~ 360 degree can be obtained.
Still for shown in Fig. 5, suppose the microband paste unit of kind of the different colours of four shown in Fig. 5, the phase compensation angle that these four kinds of Color pair microband paste unit of answering is corresponding is 0 degree, 90 degree, 180 degree and 270 degree respectively, if desired the relative offset angle that these microband paste processing units are corresponding is changed, can by regulating L1, L2, W1 and the W2 shown in Fig. 6.
In embodiments of the present invention, 8 kinds of microband paste unit can be adopted, this in 8 microband paste unit realize 45 degree of stepping phase compensations (0 degree, 45 degree, 90 degree, 135 degree, 180 degree, 225 degree, 270 degree and 315 degree).Due to microband paste unit opening 90-degree rotation, the phase compensation Angulation changes 180 degree that microband paste unit is corresponding, so only needs designed phase to compensate the microband paste unit being respectively 0 degree, 45 degree, 90 degree, 135 degree in actual design.
Fig. 7 (a) is that 8 kinds of microband paste unit realize the E face directional diagram of 45 degree of stepping phase compensation gained plane dual reflector antennas under center operating frequency;
Fig. 7 (b) is that 8 kinds of microband paste unit realize the H face directional diagram of 45 degree of stepping phase compensation gained plane dual reflector antennas under center operating frequency.
Particularly, described microband paste unit 203, specifically for the initial polarization direction of the electromagnetic wave signal based on the described primary reflection surface of arrival, adjusts the polarised direction of described electromagnetic wave signal, wherein, the polarised direction of the described electromagnetic wave signal after adjustment differs 90 degree with described initial polarization direction.
Like this, traditional reflective array antenna cross section profile height reduces by half by plane bireflectance array antenna, effectively avoid the problem that antenna section is higher, microband paste unit simultaneously in plane bireflectance array antenna realizes the compensation to electromagnetic wave signal phase place, effectively improve the performance of plane bireflectance array antenna, make plane bireflectance array antenna have the characteristic of high-gain, narrow beam, Sidelobe.
It will be understood by those skilled in the art that embodiments of the invention can be provided as method, device (equipment) or computer program.Therefore, the present invention can adopt the form of complete hardware embodiment, completely software implementation or the embodiment in conjunction with software and hardware aspect.And the present invention can adopt in one or more form wherein including the upper computer program implemented of computer-usable storage medium (including but not limited to magnetic disc store, CD-ROM, optical memory etc.) of computer usable program code.
The present invention describes with reference to according to the flow chart of the method for the embodiment of the present invention, device (equipment) and computer program and/or block diagram.Should understand can by the combination of the flow process in each flow process in computer program instructions realization flow figure and/or block diagram and/or square frame and flow chart and/or block diagram and/or square frame.These computer program instructions can being provided to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, making the instruction performed by the processor of computer or other programmable data processing device produce device for realizing the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
These computer program instructions also can be stored in can in the computer-readable memory that works in a specific way of vectoring computer or other programmable data processing device, the instruction making to be stored in this computer-readable memory produces the manufacture comprising command device, and this command device realizes the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
These computer program instructions also can be loaded in computer or other programmable data processing device, make on computer or other programmable devices, to perform sequence of operations step to produce computer implemented process, thus the instruction performed on computer or other programmable devices is provided for the step realizing the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
Although describe the preferred embodiments of the present invention, those skilled in the art once obtain the basic creative concept of cicada, then can make other change and amendment to these embodiments.So claims are intended to be interpreted as comprising preferred embodiment and falling into all changes and the amendment of the scope of the invention.
Obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (6)
1. a plane bireflectance array antenna, is characterized in that, described plane bireflectance array antenna comprises polarization selection layer, primary reflection surface, is positioned at the microband paste unit on described primary reflection surface and is positioned at the feed of homonymy with described primary reflection surface, wherein:
Described polarization selection layer, the electromagnetic wave signal for being launched by described feed reflexes to described primary reflection surface;
Described microband paste unit, for carrying out phase compensation to the electromagnetic wave signal arriving described primary reflection surface, and changes the polarised direction of described electromagnetic wave signal, makes polarization selection layer described in described electromagnetic wave signal transmission to form the synthesis wave beam pointing to direction initialization.
2. plane bireflectance array antenna as claimed in claim 1, it is characterized in that, described polarization selection layer is made up of the parallel metal band grid be printed on dielectric constant microwave base material;
Described polarization selection layer, specifically for the electromagnetic wave signal that reflecting polarised direction is parallel with described metal band grid, and the electromagnetic wave signal that transmission polarised direction is vertical with described metal band grid.
3. plane bireflectance array antenna as claimed in claim 2, is characterized in that, the thickness of described polarization selection layer is determined according to the relative dielectric constant of wavelength corresponding to the operating frequency of plane bireflectance array antenna and described dielectric constant microwave base material.
4. plane bireflectance array antenna as claimed in claim 1, it is characterized in that, described microband paste unit is printed on low medium electric constant microwave base material, is made up of the semi-open rectangle frame of metal and the metal rectangular paster being positioned at unit center.
5. plane bireflectance array antenna as claimed in claim 4, is characterized in that,
Described microband paste unit, specifically for the initial polarization direction of the electromagnetic wave signal based on the described primary reflection surface of arrival, adjust the polarised direction of described electromagnetic wave signal, wherein, the polarised direction of the described electromagnetic wave signal after adjustment differs 90 degree with described initial polarization direction.
6. plane bireflectance array antenna as claimed in claim 4, it is characterized in that, the every 90-degree rotation of metal semi-open rectangle frame opening direction described in described microband paste unit, the phase compensation Angulation changes 180 degree that described microband paste unit produces the electromagnetic wave signal arriving described primary reflection surface.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510900140.9A CN105428801B (en) | 2015-12-08 | 2015-12-08 | A kind of plane bireflectance array antenna |
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| CN201510900140.9A CN105428801B (en) | 2015-12-08 | 2015-12-08 | A kind of plane bireflectance array antenna |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106961012A (en) * | 2017-03-16 | 2017-07-18 | 西安电子科技大学 | Low section dualbeam frequency based on super surface sweeps cavity antenna |
| CN107039781A (en) * | 2017-04-06 | 2017-08-11 | 电子科技大学 | A kind of new ant algorithms converting antenna based on planar structure |
| CN108649336A (en) * | 2018-05-17 | 2018-10-12 | 西安电子科技大学 | A kind of super skin antenna in three squints of bireflectance list transmission |
| CN109167183A (en) * | 2018-08-07 | 2019-01-08 | 中国人民解放军空军工程大学 | Cassegrain reflective array antenna |
| CN109462018A (en) * | 2018-10-30 | 2019-03-12 | 东南大学 | Single more shaped-beam broadband circle polarized millimeter waves of feed gain controllable transmit array antenna |
| CN110139287A (en) * | 2019-05-21 | 2019-08-16 | 西安电子科技大学 | A kind of millimeter wave indoor passive covering method |
| CN110474151A (en) * | 2019-09-16 | 2019-11-19 | 上海无线电设备研究所 | A kind of equivalent plane reflection array antenna based on liquid crystal material |
| CN110718764A (en) * | 2019-10-22 | 2020-01-21 | 武汉灵动时代智能技术股份有限公司 | 3D polarization selection structure |
| CN114927867A (en) * | 2022-06-10 | 2022-08-19 | 哈尔滨工业大学 | Integrated low-profile low-sidelobe OAM antenna |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106961012A (en) * | 2017-03-16 | 2017-07-18 | 西安电子科技大学 | Low section dualbeam frequency based on super surface sweeps cavity antenna |
| CN106961012B (en) * | 2017-03-16 | 2019-07-16 | 西安电子科技大学 | Low section dualbeam frequency based on super surface sweeps cavity antenna |
| CN107039781A (en) * | 2017-04-06 | 2017-08-11 | 电子科技大学 | A kind of new ant algorithms converting antenna based on planar structure |
| CN108649336A (en) * | 2018-05-17 | 2018-10-12 | 西安电子科技大学 | A kind of super skin antenna in three squints of bireflectance list transmission |
| CN109167183A (en) * | 2018-08-07 | 2019-01-08 | 中国人民解放军空军工程大学 | Cassegrain reflective array antenna |
| CN109462018A (en) * | 2018-10-30 | 2019-03-12 | 东南大学 | Single more shaped-beam broadband circle polarized millimeter waves of feed gain controllable transmit array antenna |
| CN109462018B (en) * | 2018-10-30 | 2020-07-31 | 东南大学 | Single-feed-source gain-controllable multi-forming-beam broadband circularly-polarized millimeter wave transmission array antenna |
| CN110139287A (en) * | 2019-05-21 | 2019-08-16 | 西安电子科技大学 | A kind of millimeter wave indoor passive covering method |
| CN110139287B (en) * | 2019-05-21 | 2020-11-20 | 西安电子科技大学 | Millimeter wave indoor passive coverage method |
| CN110474151A (en) * | 2019-09-16 | 2019-11-19 | 上海无线电设备研究所 | A kind of equivalent plane reflection array antenna based on liquid crystal material |
| CN110718764A (en) * | 2019-10-22 | 2020-01-21 | 武汉灵动时代智能技术股份有限公司 | 3D polarization selection structure |
| CN114927867A (en) * | 2022-06-10 | 2022-08-19 | 哈尔滨工业大学 | Integrated low-profile low-sidelobe OAM antenna |
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| CN105428801B (en) | 2018-05-01 |
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