CN201360047Y - Lower profile micro-strip reflection array antenna with broad band gain frequency response - Google Patents
Lower profile micro-strip reflection array antenna with broad band gain frequency response Download PDFInfo
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- CN201360047Y CN201360047Y CNU2009200363283U CN200920036328U CN201360047Y CN 201360047 Y CN201360047 Y CN 201360047Y CN U2009200363283 U CNU2009200363283 U CN U2009200363283U CN 200920036328 U CN200920036328 U CN 200920036328U CN 201360047 Y CN201360047 Y CN 201360047Y
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- lower floor
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- rectangular patch
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Abstract
A lower profile microstrip reflection array antenna with broad band gain frequency response comprises a feed source (1) and a reflection array (2), wherein, the reflection array (2) is at certain distance far from the feed source (1) and comprises an earth plate (27) and a dielectric substrate (22); the dielectric substrate (22) is positioned on the plane surface of the earth plate (27); clearance (23) is formed between the dielectric substrate (22) and the earth plate (27); and the lower surface of the dielectric substrate (22) is opposite to the earth plate (27). The utility model has the advantage of simple structure; as a double-layered rectangular patch add with gap and an air layer is adopted, the phase compensation quantity is improved by 50 to 80%. Therefore, the utility model further has the advantages that the size of the array is increased correspondingly; and the gain frequency band dropping by minus one dB is improved from 2 to 3% to 13 to 15%.
Description
Technical field
The utility model relates to a kind of microstrip antenna, relates in particular to a kind of microstrip reflection array antenna that can realize broadband gain frequency response.
Background technology
The microstrip reflective array antenna element that at present directly utilizes the slit to carry out phase compensation adopts microband paste and the slit that is etched on the ground plate to constitute more.Because backward radiation is easily caused in the etching slit on ground plate, and then has reduced the gain of antenna.Have the reflective array that a kind of unit is made of three pasters independent of each other and a pair of slit that is etched on the paster only, the dynamic range of its structure relative complex and phase compensation is little, can only realize the reflective array function than narrow-band, reduced size on the principle.Other has a kind of unit by square patch and be etched in the reflective array that the slit on the paster constitutes, and the size by regulating paster simultaneously and the length in slit obtain the required phase compensation amount of reflective array pack radiation, but its frequency band is narrower.
Summary of the invention
Technical problem: the technical problems to be solved in the utility model provides a kind of features simple structure and need not low section microstrip reflection array antenna additional feeder network, that can realize broadband gain frequency response in big array sizes.
Technical scheme: for solving the problems of the technologies described above, the technical scheme that the low section microstrip reflection array antenna of the utility model broadband gain frequency response adopts is:
The low section microstrip reflective array antenna of this broadband gain frequency response comprise feed and with the reflective array of feed at a distance of certain distance, it is characterized in that: reflective array comprises ground plate and the dielectric substrate that is positioned on the ground plate plane, be provided with the gap between dielectric substrate and ground plate, the lower surface of dielectric substrate is relative with ground plate;
Upper surface at dielectric substrate is provided with some upper stratas rectangular patch, in the rectangular patch of upper strata, be provided with and the perpendicular slit, upper strata of the polarization of ele direction of feed radiation, center distance between each upper strata rectangular patch, be the free space wavelength of 0.5～0.8 design center frequency on horizontal and vertical, the shape of each upper strata rectangle card sheet is rectangle and identical;
On the lower surface of dielectric substrate, be provided with some lower floors rectangular patch, in lower floor's rectangular patch, be provided with and the perpendicular lower floor slit of the polarization of ele direction of feed radiation, center distance between each lower floor's rectangular patch, be the free space wavelength of 0.5～0.8 design center frequency on horizontal and vertical, the shape of each lower floor's rectangle card sheet is rectangle and identical;
Correspondence is provided with lower floor's rectangular patch below each upper strata rectangular patch, and the length of lower floor's rectangular patch and width are respectively greater than the length and the width of upper strata rectangular patch;
The length in slit, upper strata and lower floor slit shortens with the increase of the distance of the supreme centre of surface point in position at its place.
Dielectric substrate is the single-layer medium substrate, is provided with air layer or foam medium layer between dielectric substrate and ground plate.
Upper strata rectangle card sheet and the identical likelihood of lower floor's rectangle card sheet maintenance, upper strata rectangle card sheet and the length of lower floor's rectangle card sheet and wide variable-scale thereof.
The length in the slit, upper strata of upper strata rectangle card sheet is less than the length in the lower floor slit of lower floor's rectangle card sheet.
Beneficial effect: compare with relevant reflective array, the utility model is simple in structure.Compare with traditional individual layer paster structure reflective array, adopt double-deck rectangular patch to add slit and air layer in the utility model, make phase compensation amount improve 50-80%, thus the also corresponding increase of array sizes, and-the gain frequency band of 1dB landing also brings up to 13-15% by 2-3%.Under the situation that does not change patch size, only realize the required required field component phase configuration of phase compensation of broadband reflective array pack radiation by the gap length that changes etching on rectangular patch.Because the slit is to be etched in rectangular patch but not on the ground plate, so backward radiation is significantly improved.Secondly, paster can obtain big phase compensation dynamic range after adopting rectangle.Moreover, in the upper and lower surface printing rectangular patch and the etching slit of dielectric substrate, introduce double resonance mechanism and make the phase compensation dynamic range increase greatly.At last, in reflective array of the present invention, the main effect of each unit interstices provides the required field component phase configuration of the required phase compensation of its reflective array pack radiation, and reradiative main contribution comes from the paster of each unit.Patch size with layer is identical, thereby the periodicity of structure is better, can realize wide band gain frequency response.
Description of drawings
Fig. 1 is a general structure schematic diagram of the present utility model;
Fig. 2 is a reflection front cross-sectional view among Fig. 1;
Fig. 3 is a reflection front plan structure schematic diagram among Fig. 1;
Fig. 4 is that reflective array 2 is in the upper strata paster 21 of same position and goes up slit 24 and lower floor's paster 25 of etching and go up the structural representation in the slit 26 of etching among Fig. 2 of the present utility model and Fig. 3;
Fig. 5 is phase compensation amount in the utility model and the graph of relation of rectangular patch length s2;
Fig. 6 is the graph of relation of the utility model phase mass and rectangular patch length-width ratio t.
Have among the above figure: feed 1, reflective array 2, dielectric substrate 22, gap 23, upper strata rectangular patch 21, slit, upper strata 24, lower floor's rectangular patch 25, lower floor slit 26, ground plate 27, alignment pin 28.
A, B are respectively the upper strata rectangular patch and lower floor rectangular patch edge laterally reaches the cycle longitudinally, the long limit a of lower floor's rectangle
2, the long limit a of upper strata rectangle
1, the rectangle broadside b of lower floor
2, upper strata rectangle broadside b
1, the length s in lower floor slit
2, the length s in slit, upper strata
1
Embodiment
Below in conjunction with accompanying drawing the utility model is described further.
Referring to Fig. 1, the wide-band microstrip reflective array that slit that the utility model provides loads, comprise feed 1 and with the reflective array 2 of feed 1 at a distance of certain distance.
Referring to Fig. 2, Fig. 3, reflective array 2 comprise ground plate 27 and have the dielectric substrate 22 of upper surface and lower surface that be provided with gap 23 between dielectric substrate 22 and ground plate 27, the lower surface of dielectric substrate 22 is relative with ground plate 27;
Upper surface at dielectric substrate 22 is provided with some upper stratas rectangular patch 21, in upper strata rectangular patch 21, be provided with and the perpendicular slit, upper strata 24 of the polarization of ele direction of feed 1 radiation, center distance between each upper strata rectangular patch 21, be the free space wavelength of 0.5～0.8 design center frequency on horizontal and vertical, the shape of each upper strata rectangle card sheet 21 is identical;
On the lower surface of dielectric substrate 22, be provided with some lower floors rectangular patch 25, in lower floor's rectangular patch 25, be provided with and the perpendicular lower floor slit 26 of the polarization of ele direction of feed 1 radiation, center distance between each lower floor's rectangular patch 25, be the free space wavelength of 0.5～0.8 design center frequency on horizontal and vertical, the shape of each lower floor's rectangle card sheet 25 is identical;
Correspondence is provided with lower floor's rectangular patch 25 below each upper strata rectangular patch 21, and the length of lower floor's rectangular patch 25 and width are respectively greater than the length and the width of upper strata rectangular patch 21;
The length in slit, upper strata 24 and lower floor slit 26 shortens with the increase of the distance of the supreme centre of surface point in position at its place.
The fixing of dielectric substrate 22 and grounding plate 27 can adopt multiple measure common in the prior art, in the present embodiment, adopts alignment pin 28 that it is positioned and fixes.
Fig. 4 be among Fig. 2 and Fig. 3 in the reflective array 2 certain upper strata paster 21 and on slit 24 and lower floor's paster 25 of its below and on the structural representation in slit 26.
Referring to Fig. 1-Fig. 6, adopt medium (ε r=2.2) substrate 22 of thick 1mm and 121 yuan of paster battle arrays of 1mm air-gap, the cycle all is 18mm longitudinally along laterally reaching for upper strata rectangular patch and lower floor's rectangular patch, rectangular patch with layer has identical size, the breadth length ratio rate of upper strata rectangle card sheet 21 and lower floor's rectangular patch 25 all gets 0.8, and the ratio of the ratio of upper strata rectangle card sheet 21 and lower floor's rectangular patch 25 sizes and the length in slit, upper strata 24 on the same position and lower floor slit 26 all gets 0.6.Press the ascending order of distance of paster center (or center, slit) and front central authorities, the length (mm) in the lower floor slit 26 of institute's etching is followed successively by { 12,11.8,11.6 on lower floor's rectangular patch 25,11.2,11.0,10.6,10.5,10.4,9.6,8.6,8.1,7.6,6.8,5.2,5.1,4.6,4.2,4.1,4.0,3.8}.Design frequency is 10.5GHz, and as the linear polarization feed, the frequency band of gain landing 1dB is 15% with the printing radiator of tapered slot.Realize the low section microstrip reflection array antenna of broadband gain frequency response.
But the utility model continuation is contained: the paster by no periodic array adds the reflective array antenna with broadband gain frequency response that the slit battle array constitutes by same principle; Multiple-layered patches adds the reflective array antenna with broadband gain frequency response that the slit battle array constitutes by same principle; The ratio of each the laminating sheet/gap size paster different with paster/slit adds the reflective array antenna that the slit battle array constitutes by same principle.
The concrete shape of the utility model rectangular patch and parameter can be determined by following measure:
The slit of institute's etching is pressed two-dimension periodic and is arranged on rectangular patch and the paster, measure-alike with the rectangular patch of one deck, and levels rectangular patch on the same position and levels seam shape are similar respectively, and likelihood is S.The levels rectangular patch is determined by three structural parameters: the long limit a of lower floor's rectangle
2And the breadth length ratio t of rectangle and levels paster likelihood S.Slit in the unit is determined by three structural parameters: the length s in gap width (all gap widths equate in the present embodiment), lower floor slit
2And the likelihood S in levels slit, behind selected media material and thickness thereof, air layer thickness, determine the structural parameters of levels rectangular patch, leave according to feed parameters such as the distance of array, the cycle of lattice point for each cell design suitable, levels gap length s
1, s
2Can realize the required field component phase configuration of phase compensation that the radiation of broadband reflective array pack is required.
Be convenient to illustrate the design process of each cellular construction parameter, below statement is based on given other structural parameters, and this also is without loss of generality.Given parameter: dielectric substrate (ε r=2.2) thickness 1mm, feed height F=166.3mm, air-gap thickness 1mm, upper strata rectangular patch and lower floor's rectangular patch are along laterally reaching cycle A=B=18mm longitudinally, operating frequency f=10.5GHz.The likelihood of the upper strata of same position/lower floor's patch size according to different materials can be between 0.5 to 0.7 value, for example: the likelihood S of all unit of present embodiment all gets 0.6.
Center cell is with coordinate (0,0) sign, coordinate (n, m) unit in sign distance center unit transverse n cycle, vertical m cycle.The value of center cell lower floor gap length is got s near cycle A
2(0,0)=13mm.s
2(n, m) in order to realize the (n, m) the phase compensation Δ φ of individual unit (n, m), Δ φ (n, m) determine by following formula:
Wherein f is given operating frequency (Hz), and F is feed height (mm), and A is cycle (mm), and C is the light velocity.s
2(n is m) by (n, coordinate figure m) is determined corresponding to Δ φ on the following curve.This curve draws under above-mentioned specified criteria, if change the curve that material parameter etc. also can be similarly.Curve calculation machine analog simulation obtains, and available simulation software is just like the HFSS of Ansoft company, the high frequency simulation softwares such as MicrowaveStudio CST of CST company.In emulation the unit is placed unlimited periodic array (promptly adopting periodic boundary condition), adopt the linear polarization plane wave excitation of polarised direction perpendicular to the gap length direction, the phase mass of investigating far zone field master's polarized wave is with s
2(n, variation relation m) promptly obtains this curve.
Claims (4)
1, a kind of low section microstrip reflection array antenna of broadband gain frequency response, comprise feed (1) and with feed (1) at a distance of the reflective array (2) of certain distance, it is characterized in that: reflective array (2) comprises ground plate (27) and is positioned at dielectric substrate (22) on ground plate (27) plane, be provided with gap (23) between dielectric substrate (22) and ground plate (27), the lower surface of dielectric substrate (22) is relative with ground plate (27);
Upper surface at dielectric substrate (22) is provided with some upper stratas rectangular patches (21), in upper strata rectangular patch (21), be provided with the perpendicular slit, upper strata (24) of polarization of ele direction with feed (1) radiation, center distance between each upper strata rectangular patch (21), be the free space wavelength of 0.5～0.8 design center frequency on horizontal and vertical, the shape of each upper strata rectangle card sheet (21) is rectangle and identical;
On the lower surface of dielectric substrate (22), be provided with some lower floors rectangular patches (25), in lower floor's rectangular patch (25), be provided with the perpendicular lower floor slit (26) of polarization of ele direction with feed (1) radiation, center distance between each lower floor's rectangular patch (25), be the free space wavelength of 0.5～0.8 design center frequency on horizontal and vertical, the shape of each lower floor's rectangle card sheet (25) is rectangle and identical;
Below correspondence at each upper strata rectangular patch (21) is provided with lower floor's rectangular patch (25), and the length of lower floor's rectangular patch (25) and width are respectively greater than the length and the width of upper strata rectangular patch (21);
The length of slit, upper strata (24) and lower floor slit (26) shortens with the increase of the distance of the supreme centre of surface point in position at its place.
2, the low section microstrip reflection array antenna of broadband gain frequency response according to claim 1, it is characterized in that: dielectric substrate (22) is the single-layer medium substrate, is provided with air layer or foam medium layer between dielectric substrate (22) and ground plate (27).
3, the low section microstrip reflection array antenna of broadband gain frequency response according to claim 1, it is characterized in that: upper strata rectangle card sheet (21) keeps identical likelihood with lower floor's rectangle card sheet (25), upper strata rectangle card sheet (21) and the length of lower floor's rectangle card sheet (25) and wide variable-scale thereof.
4, the low section microstrip reflection array antenna of broadband gain frequency response according to claim 1, it is characterized in that: the length in the slit, upper strata (24) of upper strata rectangle card sheet (21) is less than the length in the lower floor slit (26) of lower floor's rectangle card sheet (25).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200363283U CN201360047Y (en) | 2009-03-03 | 2009-03-03 | Lower profile micro-strip reflection array antenna with broad band gain frequency response |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200363283U CN201360047Y (en) | 2009-03-03 | 2009-03-03 | Lower profile micro-strip reflection array antenna with broad band gain frequency response |
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| CN201360047Y true CN201360047Y (en) | 2009-12-09 |
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|---|---|---|---|
| CNU2009200363283U Expired - Fee Related CN201360047Y (en) | 2009-03-03 | 2009-03-03 | Lower profile micro-strip reflection array antenna with broad band gain frequency response |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102800976A (en) * | 2011-06-29 | 2012-11-28 | 深圳光启高等理工研究院 | Metamaterial and metamaterial antenna |
| CN102810751A (en) * | 2011-06-28 | 2012-12-05 | 深圳光启高等理工研究院 | Metamaterial and metamaterial antenna |
| CN102810752A (en) * | 2011-06-28 | 2012-12-05 | 深圳光启高等理工研究院 | Metamaterial and metamaterial antenna |
| CN102820544A (en) * | 2012-07-03 | 2012-12-12 | 深圳光启创新技术有限公司 | Phase correction sticker on reflector of antenna and reflector antenna |
| CN103020391A (en) * | 2012-12-28 | 2013-04-03 | 北京航天福道高技术股份有限公司 | Design method for plant reflection array antennas |
| CN103367881A (en) * | 2013-07-16 | 2013-10-23 | 北京邮电大学 | High-gain G-shaped dual-frequency monopole antenna with loaded dual-frequency AMC reflection plate |
| 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 |
-
2009
- 2009-03-03 CN CNU2009200363283U patent/CN201360047Y/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102810751A (en) * | 2011-06-28 | 2012-12-05 | 深圳光启高等理工研究院 | Metamaterial and metamaterial antenna |
| CN102810752A (en) * | 2011-06-28 | 2012-12-05 | 深圳光启高等理工研究院 | Metamaterial and metamaterial antenna |
| CN102810751B (en) * | 2011-06-28 | 2015-04-22 | 深圳光启高等理工研究院 | Metamaterial and metamaterial antenna |
| CN102810752B (en) * | 2011-06-28 | 2015-04-22 | 深圳光启高等理工研究院 | Metamaterial and metamaterial antenna |
| CN102800976A (en) * | 2011-06-29 | 2012-11-28 | 深圳光启高等理工研究院 | Metamaterial and metamaterial antenna |
| CN102800976B (en) * | 2011-06-29 | 2014-09-03 | 深圳光启高等理工研究院 | Metamaterial and metamaterial antenna |
| CN102820544A (en) * | 2012-07-03 | 2012-12-12 | 深圳光启创新技术有限公司 | Phase correction sticker on reflector of antenna and reflector antenna |
| CN103020391A (en) * | 2012-12-28 | 2013-04-03 | 北京航天福道高技术股份有限公司 | Design method for plant reflection array antennas |
| CN103367881A (en) * | 2013-07-16 | 2013-10-23 | 北京邮电大学 | High-gain G-shaped dual-frequency monopole antenna with loaded dual-frequency AMC reflection plate |
| 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 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091209 Termination date: 20140303 |