CN103972658B - The double-circle polarization microstrip antenna of wideband wide scan - Google Patents
The double-circle polarization microstrip antenna of wideband wide scan Download PDFInfo
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Abstract
The present invention relates to the double-circle polarization microstrip antenna of wideband wide scan.Comprise base, two pieces in cross-shaped micro-band plate and radome; Two pieces of micro-band plates are respectively equipped with feeder line, Ba Lun and antenna oscillator, and base is that the circle of open top is box-like, and two pieces of cross-shaped micro-band plates are fixed in base, and the bottom of base offers two interface holes; The dome shape that radome is uncovered bottom being, is integrated with parasitic radiation sheet, is located on base in cover.Working band of the present invention is wide, and the relative bandwidth of standing wave≤3 is more than 40%; Be suitable for frequency range wide, centre frequency all can adopt this structure at 0.5GHz ~ 5GHz; Wide as scanning angle during phase array, the active standing wave of the comprehensive scanning in ° elevation angle, 21% bandwidth ± 60 is no more than 1.9; Volume is little, and diameter is 0.4 wavelength; Stability Analysis of Structures is reliable, has good antidetonation and dust and moisture performance.
Description
Technical field
Patent of the present invention relates to a kind of broadband dual circularly polarized antenna being applicable to large-angle scanning, belongs to microwave technical field, also can be used for the fields such as microwave communication, modern radar system, radio-frequency (RF) identification, electronic equipment.
Technical background
Antenna is the significant components of the systems such as radio broadcasting, radio communication and wireless exploration, and the performance of antenna element and aerial array directly reflects and affects the performance of whole system to a great extent.Along with the develop rapidly of active phased array technology, the requirement of the systems such as radar to frequency bandwidth and scan angle is more and more higher, and this also proposes more and more higher requirement to the function of antenna and performance.
For circular polarized antenna, conventional form has the Vivaldi antenna, micro-strip paster antenna, element antenna etc. of horn antenna, right-angled intersection.From structure, horn antenna volume and weight is all very large; Although right-angled intersection Vivaldi antenna is with wide, volume is large, and section is high; Micro-strip paster antenna because it is lightweight, volume is little, easy processing and the advantage such as integrated be used widely in Antenna Design, but by the restriction of its plane form, the impedance bandwidth of single layer microstrip patch antenna is difficult to more than 15%, and particularly limited for performance during large-angle scanning; About element antenna form, the metal arm oscillator of right-angled intersection can also be adopted, but metal oscillator and feeder line technique and complex structure, and weight is also heavier than micro-band forms a lot, particularly evident for lower frequency.
Summary of the invention
In order to applicable large-scale engineering applications, while taking into account or improving electrical property, ensure stability and structural strength are installed, the invention provides a kind of double-circle polarization microstrip antenna of wideband wide scan.
The present invention is a kind of micro-strip oscillator antenna of right-angled intersection, the micro-strip oscillator intersected by two, the stand-alone antenna cover of integrated parasitic radiation element, integrated shirt rim and install the base of journal stirrup and form, and forms the modular unit structure with two prevention at radio-frequency port.This version makes it except having conventional microstrip antennas flexible form, being easy to, except the advantage of processing, also to have the outstanding wideband wide scan performance of element antenna.The relative bandwidth of its VSWR≤3 more than 40%, the phase-array scanning angle for 21.2% bandwidth cover exceed ± 60 ° time active standing wave VSWR≤1.9 and axial ratio AR≤3dB; (element diameter is only 0.4 to compact conformation
λ 0 ), modular element antenna cover-micro-band plate-firm banking structure makes it install in large-scale engineering applications, adjusts and safeguard all very convenient.
Concrete technical solution of the present invention is as follows:
The double-circle polarization microstrip antenna of wideband wide scan comprises micro-band plate and the radome 1 of base 4, two pieces of right-angled intersections; Described two pieces of micro-band plates are the micro-band plate of A type 2 and the micro-band plate 3 of M type, and the micro-band plate of A type 2 is identical with shape with the height of the micro-band plate of M type 3;
The middle part of the micro-band plate of described A type 2 offers the micro-band plate 2 of A plate elongated slot seam 23, A type on a through base side pressed on ring along vertical direction is provided with down the A plate feeder line 25 of hook solid around A plate elongated slot seam 23; One end of A plate feeder line 25 is positioned at the middle part of the micro-band plate 2 of A type, and the other end is A plate feedback point 22, and is positioned at the base place of the micro-band plate 2 of A type, and A plate feeder line 25 place corresponding to top of stitching 23 with A plate elongated slot is the A plate feeder line flex point 28 raised up; The anti-matching section 24 of A plate resistance of a little the 22 A plate feeder lines 25 be connected being connected is presented with A plate; With A plate elongated slot seam 23 for benchmark, the another side of the micro-band plate 2 of A type covers copper region with A plate elongated slot seam 23 for benchmark is provided with banded A plate; Banded A plate covers copper region and is made up of the A plate antenna oscillator 26 that copper strips is covered on the base of the micro-band plate 2 of A type, stitch the A plate feed Ba Lun 27 of 23 both sides and beveled structure along A plate elongated slot; Connected by A plate shorting stub 21 between the bottom of A plate feed Ba Lun 27;
The top of the micro-band plate of described M type 3 offers the micro-band plate 3 of the M plate short line of rabbet joint 33, M type of through top margin side Middle face along vertical direction is provided with the M plate feeder line 35 of the shape of falling M; One end of M plate feeder line 35 is positioned at the middle part of the micro-band plate 3 of M type, and the other end is M plate feedback point 32, and is positioned at the base place of the micro-band plate 3 of M type; M plate feeder line 35 place corresponding with the lower end of the short line of rabbet joint of M plate 33 is to recessed M plate feeder line flex point 38; The anti-matching section 34 of M plate resistance of a little the 32 M plate feeder lines 35 be connected being connected is presented with M plate; With the short line of rabbet joint 33 of M plate for benchmark, the another side of the micro-band plate of M type 3 covers copper region with the short line of rabbet joint 33 of M plate for benchmark is provided with banded M plate; Banded M plate covers copper region and is covered copper strips by the base of the micro-band plate of M type 3, formed along the M plate feed Ba Lun 37 of the M plate short line of rabbet joint 33 both sides and the M plate antenna oscillator 36 of beveled structure; The micro-band plate 3 of M type between M plate feed Ba Lun 37 bottom offers M plate through hole 31;
Stitched the cooperation of the short line of rabbet joint 33 of M plate on 23 and the micro-band plate of M type 3 by the A plate elongated slot on the micro-band plate of A type 2, make the micro-band plate of A type 2 and the micro-band plate of M type 3 in cross-shaped;
Described base 4 is that the circle of open top is box-like, and the cross-shaped micro-band plate of A type 2 and the micro-band plate 3 of M type are fixed in base 4, and the bottom of base 4 offers two interface holes;
Described radome 1 is the uncovered dome shape in bottom, and the top in it is provided with sheet metal 12; Radome 1 is located on base 4; Sheet metal 12 in radome 1 is 0.1 apart from the distance between the cross-shaped micro-band plate of A type 2 and M type micro-band plate 3 top
λ 0 ~ 0.2
λ 0 , described in
λ 0 for free space intermediate frequency wavelength.
The flat board that the micro-band plate of described A type 2 is identical with sized by the micro-band plate of M type 3, and top can arrange corner cut according to oscillator arms gradient.
Described sheet metal 12 is circular, and circle centre position offers aperture.
Bottom surface in base 4 is distributed with the small vertical plate 43 of four blocks of metals in crosswise, wherein two pieces of small vertical plates point-blank, another two pieces of small vertical plates are on the mutually orthogonal another straight line of described straight line, the micro-band plate 2 of described A type is threaded connection part and is connected to two pieces of small vertical plates point-blank, and the micro-band plate of described M type 3 is threaded connection part and is connected to the another two pieces of small vertical plates in orthogonal straight lines.
The dual-side bottom of the micro-band plate 2 of described A type is arranged with right angle groove respectively, and the dual-side bottom of the micro-band plate 3 of described M type is arranged with right angle groove respectively; The right angle groove of A type micro-band plate 2 both sides makes the upper buckle of the micro-band plate 2 of A type on the cylindrical wall of base 4, and the right angle groove of M type micro-band plate 3 both sides makes the upper buckle of the micro-band plate 3 of M type on the cylindrical wall of base 4.
The invention provides a kind of dual polarized antenna being applicable to Connectors for Active Phased Array Radar, there is wideband wide scan performance, be characterized in that volume is little, modularized design is applicable to producing in enormous quantities and assembling, there is good antidetonation and dust and moisture performance.And adopt micro-band forms, have that rate of finished products is high, the simple advantage of technique.Its technical parameter is as follows:
1. the relative bandwidth of standing wave≤3 is more than 40%, and centre frequency all can adopt this structure at 0.5GHz ~ 5GHz;
2. normal axis ratio≤0.3dB, active standing wave≤1.5;
3. for the active phased array of 21.2% bandwidth, scan ± 60 ° of elevations angle time, active standing wave≤1.9 of comprehensive scanning, the axial ratio of left-hand circular polarization and right-handed circular polarization is all less than 3dB;
4. diameter only 0.4 wavelength is highly 0.42 wavelength.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention (not being with radome).
Fig. 2 is the right view of Fig. 1.
Fig. 3 is explosive view of the present invention (not being with radome).
Fig. 4 is A type micro-band plate one side structural representation.
Fig. 5 is A type micro-band plate another side structural representation.
Fig. 6 is M type micro-band plate one side structural representation.
Fig. 7 is M type micro-band plate another side structural representation.
Fig. 8 is radome cutaway view.
Fig. 9 is antenna element overall structure cutaway view.
Sequence number in upper figure: radome 1, the micro-band plate 2 of A type, the micro-band plate 3 of M type, base 4, sheet metal 12, A plate shorting stub 21, A plate feedback point 22, A plate elongated slot seam 23, the anti-matching section 24 of A plate resistance, A plate feeder line 25, A plate antenna oscillator 26, A plate feed Ba Lun 27, A plate feeder line flex point 28, A plate installing hole 29, M plate through hole 31, M plate feedback point 32, the short line of rabbet joint 33 of M plate, the anti-matching section 34 of M plate resistance, M plate feeder line 35, M plate antenna oscillator 36, M plate feed Ba Lun 37, M plate feeder line flex point 38, M plate installing hole 39, small vertical plate 43, A plate interface hole 44, M plate interface hole 45.
Embodiment
Below in conjunction with accompanying drawing, by embodiment, the present invention is further described.
Embodiment 1
The present embodiment provides the design of a kind of active phase array antenna, operating frequency is 2.1GHz ~ 2.6GHz, polarization mode is left-hand circular polarization and right-handed circular polarization, array format employing ranks spacing is the triangle grid of 61.5mm and 71mm, scan the angle of pitch to reach ± 60 °, require that there is good anti shock and vibration performance and dust and moisture performance.
See Fig. 1 and Fig. 2, the double-circle polarization microstrip antenna of wideband wide scan comprises micro-band plate and the radome 1 of base 4, two pieces of right-angled intersections; Two pieces of micro-band plates are the micro-band plate of A type 2 and the micro-band plate 3 of M type; The flat board that the micro-band plate of A type 2 is identical with sized by the micro-band plate of M type 3, all selects thickness
t=0.762mm, relative dielectric constant
ε r micro-band plate of=2.94, and top is provided with corner cut according to oscillator arms gradient.
The side pressed on ring offering A plate elongated slot seam 23, A type micro-band plate 2 on through base see the middle part of the micro-band plate of Fig. 5, A type 2 along vertical direction is provided with down the A plate feeder line 25 of hook solid around A plate elongated slot seam 23; One end of A plate feeder line 25 is positioned at the middle part of the micro-band plate 2 of A type, and the other end is A plate feedback point 22, and is positioned at the base place of the micro-band plate 2 of A type, and A plate feeder line 25 place corresponding to top of stitching 23 with A plate elongated slot is the A plate feeder line flex point 28 raised up.The anti-matching section 24 of A plate resistance of a little 22 adjacent A plate feeder lines 25 being connected is presented with A plate; See Fig. 4, with A plate elongated slot seam 23 for benchmark, the another side of the micro-band plate 2 of A type covers copper region with A plate elongated slot seam 23 for benchmark is provided with banded A plate; Banded A plate covers copper region and is made up of the A plate antenna oscillator 26 that copper strips is covered on the base of the micro-band plate 2 of A type, stitch the A plate feed Ba Lun 27 of 23 both sides and beveled structure along A plate elongated slot; A plate feed Ba Lun 27 bottom offers between A plate installing hole 29, A plate feed Ba Lun 27 by A plate shorting stub 21 short circuit respectively at the two ends of the micro-band plate 2 of A type.
The side Middle face offering the micro-band plate 3 of the M plate short line of rabbet joint 33, M type of through top margin see the top of the micro-band plate of Fig. 7, M type 3 along vertical direction is provided with the M plate feeder line 35 of the shape of falling M; One end of M plate feeder line 35 is positioned at the middle part of the micro-band plate 3 of M type, and the other end is M plate feedback point 32, and is positioned at the base place of the micro-band plate 3 of M type; M plate feeder line 35 place corresponding with the lower end of the short line of rabbet joint of M plate 33 is to recessed M plate feeder line flex point 38; The anti-matching section 34 of M plate resistance of a little 32 adjacent M plate feeder lines 35 being connected is presented with M plate; See Fig. 6, with the short line of rabbet joint 33 of M plate for benchmark, the another side of the micro-band plate of M type 3 covers copper region with the short line of rabbet joint 33 of M plate for benchmark is provided with banded M plate; Banded M plate covers copper region and is covered copper strips by the base of the micro-band plate of M type 3, formed along the M plate feed Ba Lun 37 of the M plate short line of rabbet joint 33 both sides and the M plate antenna oscillator 36 of beveled structure; On the micro-band plate 3 of M type, M plate through hole 31 is offered in the middle of M plate feed Ba Lun 37 bottom, A plate shorting stub 21 in the middle of A plate bottom is connected across on A plate feed Ba Lun 27 through this hole, and M plate feed Ba Lun 37 bottom offers M plate installing hole 39 respectively at the two ends of the micro-band plate 3 of M type.
Antenna oscillator arm total length is generally the half or slightly short of centre frequency corresponding wavelength, and oscillator arms is about quarter-wave apart from reflecting surface height.
The feeder line of two oscillators is designed with the anti-matching section of A plate resistance 24 and the anti-matching section 34 of M plate resistance all respectively.For not affecting the power capacity of antenna, impedance transformation should avoid the narrow line selecting high impedance, is port and the feeder line of 50 Ω for characteristic impedance, can selected characteristic impedance be that the transforming section of 60 Ω ~ 100 Ω carries out impedance matching.Meanwhile, for this class formation element antenna, for not affecting feeder line structure, the length of matching section is generally no more than 0.2 times of wavelength on transmission line.By the coupling respectively regulating the position of transformer section and length, width can realize two oscillator impedances, to reduce the reflection that mismatch causes, realize higher efficiency.Except impedance matching section, by regulating the position of A plate feeder line flex point 28 and M plate feeder line flex point 38 respectively, the length of two feeder lines can be regulated respectively, thus regulate the phase difference of two oscillators, to realize mating more accurately, for circular polarized antenna, better axial ratio can also be realized.
See Fig. 3, stitched the cooperation of the short line of rabbet joint 33 of M plate on 23 and the micro-band plate of M type 3 by the A plate elongated slot on the micro-band plate of A type 2, make the micro-band plate of A type 2 and the micro-band plate of M type 3 in cross-shaped; A plate elongated slot seam 23 and the short line of rabbet joint 33 of M plate are connected on the immediate vicinity of A plate antenna oscillator 26 and M plate antenna oscillator 36.The feeder line of two oscillators is walked around A plate elongated slot seam 23 and the short line of rabbet joint 33 of M plate respectively and is folded to half of with the balanced excitation realized antenna oscillator in addition from top and bottom, for suppressing unnecessary radiation, the sharp comer at feeder line turning can be cut.Each antenna element has two excitation port, and namely A plate feedback point 22 and M plate feedback point 32, can change the polarization mode of antenna by the excitation amplitude and relative phase relation changing two-port.Constant amplitude and phase difference are that the excitation of 90 ° or-90 ° can realize left-hand circular polarization or right-handed circular polarization.If two-port individually encourages, two kinds of mutually orthogonal linear polarizations can be provided respectively.
See Fig. 3, base 4 is that the circle of open top is box-like, and external diameter and internal diameter are respectively
d b =50mm and
d r =53mm, active standing wave when significantly can improve mutual coupling effect between unit and large-angle scanning by the height of the cylindrical wall of adjusting base 4.The design of cylindrical wall had not only reduced mutual coupling between unit but also the broadening lobe width of unit, improved large-angle scanning performance and the bandwidth of antenna to a great extent.The bottom of base 4 offers A plate interface hole 44, M plate interface hole 45 respectively, the medium of connector should be not less than the inner chamber bottom surface of base 4, the medium exceeded after inserting it into A plate interface hole 44 on base 4 and M plate interface hole 45 just touches A plate feedback point 22 and the M plate feedback point 32 of micro-band plate, and base 4 can be connector and provides and connect ground reliably.Connector can be fixed on base 4 with screw.For circular polarized antenna, need to connect the 3dB electric bridge that phase output differs 90 °, it can be directly installed on below base 4.
On bottom surface in base 4, in crosswise, distribution is installed with the small vertical plate 43 of four blocks of metals, and wherein two pieces of small vertical plates point-blank, and another two pieces of small vertical plates are on another straight line; The height of every block small vertical plate
h f =6mm, for not affecting the electrical property of antenna, feed Ba Lun grounding parts should higher than the height of small vertical plate
h f .The micro-band plate 2 of A type is threaded connection part and is connected to two pieces of small vertical plates point-blank, and the micro-band plate of M type 3 is threaded connection part and is connected to another two pieces of small vertical plates point-blank.Dual-side bottom see the micro-band plate 2 of Fig. 9, A type is arranged with right angle groove respectively, and the dual-side bottom of the micro-band plate 3 of M type is arranged with right angle groove respectively; The top of the micro-band plate 2 of A type is buckled in by the right angle groove of both sides on the cylindrical wall of base 4, and the top of the micro-band plate 3 of M type is buckled on the cylindrical wall of base 4 by the right angle groove of both sides.The micro-band plate hight of oscillator
h m =43mm, antenna element total height
h r =55mm.
See Fig. 8, radome 1 is the uncovered dome shape in bottom, and the top in it is provided with circular sheet metal 12, and an aperture is opened in the center of circle of sheet metal 12; Radome 1 is located on base 4 by the mode of buckle; Sheet metal 12 in radome 1 is apart from the distance between the cross-shaped micro-band plate of A type 2 and M type micro-band plate 3 top
d p =20mm; Sheet metal 12, as the parasitic element of antenna oscillator, can significantly improve frequency band and the scan performance of antenna by the radius and height (i.e. radome height) regulating it.
The diameter of this antenna element (containing radome) only 0.40
λ 0 , high by 0.42
λ 0 , relative bandwidth, more than 40%, also has the space continuing to optimize according to application demand.For reducing radiating element quantity, array format adopts triangle grid, reach at 2.1GHz ~ 2.6GHz frequency band interscan angle ± 60 °, and in frequency band, left-handed and right-handed circular polarization is all not more than 1.9 at the active standing wave VSWR of each scan angle, the axial ratio AxisRatio of maximum scan angle is all less than 3dB.This antenna has that volume is little, electrical property is outstanding, dust and moisture, be convenient to the advantage such as project installation and maintenance, only slightly need adjust, also can be applicable to other frequency band and other polarization situation.
Claims (5)
1. the double-circle polarization microstrip antenna of wideband wide scan, is characterized in that: comprise base (4), micro-band plate of two pieces of right-angled intersections and radome (1); Described two pieces of micro-band plates are the micro-band plate of A type (2) and the micro-band plate of M type (3), and the micro-band plate of A type (2) is identical with shape with the height of the micro-band plate of M type (3);
The middle part of the micro-band plate of described A type (2) offers A plate elongated slot seam (23) on through base along vertical direction, a side pressed on ring of the micro-band plate of A type (2) is provided with down the A plate feeder line (25) of hook solid around A plate elongated slot seam (23); One end of A plate feeder line (25) is positioned at the middle part of the micro-band plate of A type (2), the other end is A plate feedback point (22), and being positioned at the base place of the micro-band plate of A type (2), A plate feeder line (25) place of stitching the top of (23) corresponding with A plate elongated slot is A plate feeder line flex point (28) raised up; The anti-matching section of A plate resistance (24) that A plate feeder line (25) that point (22) is connected connects is presented with A plate; With A plate elongated slot seam (23) for benchmark, the another side of the micro-band plate of A type (2) covers copper region with A plate elongated slot seam (23) for benchmark is provided with banded A plate; Banded A plate covers copper region and is covered copper strips by the base of the micro-band plate of A type (2), formed along A plate elongated slot seam A plate feed Ba Lun (27) of (23) both sides and the A plate antenna oscillator (26) of beveled structure; Connected by A plate shorting stub (21) between the bottom of A plate feed Ba Lun (27);
The top of the micro-band plate of described M type (3) offers the short line of rabbet joint of M plate (33) of through top margin along vertical direction, the side Middle face of the micro-band plate of M type (3) is provided with the M plate feeder line (35) of the shape of falling M; One end of M plate feeder line (35) is positioned at the middle part of the micro-band plate of M type (3), and the other end is M plate feedback point (32), and is positioned at the base place of the micro-band plate of M type (3); M plate feeder line (35) place corresponding with the lower end of the short line of rabbet joint of M plate (33) is to recessed M plate feeder line flex point (38); The anti-matching section of M plate resistance (34) that M plate feeder line (35) that point (32) is connected connects is presented with M plate; With the short line of rabbet joint of M plate (33) for benchmark, the another side of the micro-band plate of M type (3) covers copper region with the short line of rabbet joint of M plate (33) for benchmark is provided with banded M plate; Banded M plate covers copper region and is covered copper strips by the base of the micro-band plate of M type (3), formed along M plate feed Ba Lun (37) of the short line of rabbet joint of M plate (33) both sides and the M plate antenna oscillator (36) of beveled structure; The micro-band plate of M type (3) between M plate feed Ba Lun (37) bottom offers M plate through hole (31);
Stitched the cooperation of the short line of rabbet joint of M plate (33) on (23) and the micro-band plate of M type (3) by the A plate elongated slot on the micro-band plate of A type (2), make the micro-band plate of A type (2) and the micro-band plate of M type (3) in cross-shaped;
The circle that described base (4) is open top is box-like, and the cross-shaped micro-band plate of A type (2) and the micro-band plate of M type (3) are fixed in base (4), and the bottom of base (4) offers two interface holes;
Described radome (1) is the uncovered dome shape in bottom, and the top in it is provided with sheet metal (12); Radome (1) is located on base (4); Sheet metal (12) in radome (1) is 0.1 apart from the distance between the cross-shaped micro-band plate of A type (2) and the micro-band plate of M type (3) top
λ 0 ~ 0.2
λ 0 , described in
λ 0 for free space intermediate frequency wavelength.
2. the double-circle polarization microstrip antenna of wideband wide scan according to claim 1, is characterized in that: the flat board that the micro-band plate of described A type (2) is identical with sized by the micro-band plate of M type (3), and top can arrange corner cut according to oscillator arms gradient.
3. the double-circle polarization microstrip antenna of wideband wide scan according to claim 1 and 2, is characterized in that: described sheet metal (12) is for circular, and circle centre position offers aperture.
4. the double-circle polarization microstrip antenna of wideband wide scan according to claim 1 and 2, it is characterized in that: the small vertical plate (43) bottom surface in base (4) being distributed with four blocks of metals in crosswise, wherein two pieces of small vertical plates point-blank, another two pieces of small vertical plates are on the another straight line mutually orthogonal with described straight line, the micro-band plate of described A type (2) is threaded connection part and is connected to two pieces of small vertical plates point-blank, and the micro-band plate of described M type (3) is threaded connection part and is connected to the another two pieces of small vertical plates in orthogonal straight lines.
5. the double-circle polarization microstrip antenna of wideband wide scan according to claim 1 and 2, it is characterized in that: the dual-side bottom of the micro-band plate of described A type (2) is arranged with right angle groove respectively, the dual-side bottom of the micro-band plate of described M type (3) is arranged with right angle groove respectively; The right angle groove of the micro-band plate of A type (2) both sides makes the upper buckle of the micro-band plate of A type (2) on the cylindrical wall of base (4), and the right angle groove of the micro-band plate of M type (3) both sides makes the upper buckle of the micro-band plate of M type (3) on the cylindrical wall of base (4).
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| CN105186123B (en) * | 2015-08-19 | 2017-09-15 | 南京邮电大学 | A kind of plane circular polarized antenna |
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| CN107293863A (en) * | 2017-05-03 | 2017-10-24 | 西安电子科技大学 | A kind of broad beam broadband dual polarized antenna |
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| CN201156586Y (en) * | 2008-02-04 | 2008-11-26 | 南京恩瑞特实业有限公司 | Micro strip double polarized antenna unit of swept-back type |
| CN201918502U (en) * | 2010-12-07 | 2011-08-03 | 南京恩瑞特实业有限公司 | Broadband high-isolation dual-polarization antenna unit adopting strip line structure |
| CN202405424U (en) * | 2011-12-12 | 2012-08-29 | 南京恩瑞特实业有限公司 | Wind profile radar modularization antenna on basis of phased-array technology |
| CN203859224U (en) * | 2014-04-25 | 2014-10-01 | 中国电子科技集团公司第三十八研究所 | Dual circularly polarized microstrip antenna for broadband and wide-angle scanning |
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|---|---|
| CN103972658A (en) | 2014-08-06 |
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