CN109659709A - A kind of broadband that the face E focuses, Sidelobe, wide angle scanning waveguide narrow side mutually sweep antenna - Google Patents
A kind of broadband that the face E focuses, Sidelobe, wide angle scanning waveguide narrow side mutually sweep antenna Download PDFInfo
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- CN109659709A CN109659709A CN201811542655.6A CN201811542655A CN109659709A CN 109659709 A CN109659709 A CN 109659709A CN 201811542655 A CN201811542655 A CN 201811542655A CN 109659709 A CN109659709 A CN 109659709A
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- narrow side
- antenna
- waveguide
- array
- longitudinal joint
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/29—Combinations of different interacting antenna units for giving a desired directional characteristic
- H01Q21/293—Combinations of different interacting antenna units for giving a desired directional characteristic one unit or more being an array of identical aerial elements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
-
- 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
- H01Q13/20—Non-resonant leaky-waveguide or transmission-line antennas; Equivalent structures causing radiation along the transmission path of a guided wave
- H01Q13/22—Longitudinal slot in boundary wall of waveguide or transmission line
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/0006—Particular feeding systems
- H01Q21/0037—Particular feeding systems linear waveguide fed arrays
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
- H01Q21/061—Two dimensional planar arrays
- H01Q21/064—Two dimensional planar arrays using horn or slot aerials
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- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The present invention relates to a kind of broadband of face E focusing, Sidelobe, wide angle scanning waveguide narrow sides mutually to sweep antenna, is mainly used in one-dimensional active phase-scan radar.The antenna includes antenna array, power divider and wave beam control machine；Antenna array is made of 24 waveguide narrow side longitudinal joint linear arrays, and every linear array includes 32 narrow side longitudinal joint radiating elements, 2 feed structures；Piece external position in portion's is fed two waveguide ports of antenna array in an array.The present invention provides a kind of completely new and-and narrow side Waveguide slot array antenna, the waveguide narrow side apex drive structure of innovative design is used in every linear array, simplify the design of linear array feeding network, the bandwidth of operation of array antenna is improved, provides a kind of foundation to realize that the wide angle automatically controlled one-dimensional phase of scanning in face ± 60 ° H sweeps antenna.
Description
Technical field
The present invention relates to radar antenna field, in particular to a kind of broadband of the face E focusing, Sidelobe, wide angle scanning waveguide
Narrow side mutually sweeps antenna, is mainly used in one-dimensional phase-scan radar.
Background technique
With the development of multiple use motion platform radar system, increasingly to the functional requirement of radar system on platform
It is more, higher and higher to radar system index request.Often there is wider frequency bandwidth, higher efficiency, wave to antenna requirement
Beam focusing, very high power capacity, and this several indexs mutually restrict, when frequency is higher, antenna efficiency is mainly reflected in feedback
The loss of electric network；Directly microstrip antenna form is discharged for wider bandwidth, very high power capacity, and can meet very well above-mentioned
The only surplus waveguide form antenna of condition；And waveguide form broad-band antenna is frequently with series feed form, the energy that terminal is unallocated to go out
Amount needs load absorption, its wave beam in this way can be with frequency shift (FS).So Wideband Focusing beam antenna is by very big attention.
Wideband Focusing beam waveguide antenna has for radar system there are three advantage: (1) broadband operation, due to using
And-and structure type, the beamwidth of antenna can be than having advantage using the antenna of port feed form, while can also be uniform by antenna
Be divided into two parts formed difference beam；(2) difference beam is conducive to radar realization minor lobe blanking；(3) the wide focus beam of wider frequency
Be conducive to radar and realize super-resolution.
Summary of the invention
Technical problems to be solved
In order to avoid the shortcomings of the prior art, the present invention proposes a kind of broadband of the face E focusing, Sidelobe, exposes thoroughly
Angle waveguide narrow side mutually sweeps antenna.
Technical solution
A kind of broadband that the face E focuses, Sidelobe, wide angle scanning waveguide narrow side mutually sweep antenna, it is characterised in that antenna array
Using waveguide broadside and form is presented, is made of 24 waveguide linear arrays, every waveguide linear array includes radiating guide and the rear end of front end
Feeding network, be provided with 32 longitudinal joint radiating elements in the narrow side of radiating guide, feeding network includes 2 symmetrical feed knots
Structure, each feed structure are made of 3 evil spirit T, are four by one point of input feed, waveguide linear array is divided into 8 by two feed structures
Cavity, corresponding 4 narrow side longitudinal joint radiating elements in each cavity, in two narrow side longitudinal joint radiating elements of the corresponding evil spirit input port T
Between be equipped with adjust match block；It is respectively equipped with disturbance block in the two sides of narrow side longitudinal joint radiating element, a disturbance block is fitted in upper ripple
In guide wall, one is fitted on lower wave guide wall, the disturbance block position row of intermediate two narrow side longitudinal joint radiating elements in a cavity
Cloth is consistent, and the disturbance block position arrangement of two narrow side longitudinal joint radiating elements of two sides is opposite with middle position arrangement；Pass through adjusting
The depth and width and the position of disturbance block, width, height realization each radiating element of radiating guide of narrow side longitudinal joint radiating element
Between energy radiate ratio, realize linear array Taylor amplitude weighting；Linear array is realized by adjusting the power-division ratios of feed structure again
Sidelobe；The matching of the feeding network of rear end and the radiating guide of front end is realized by adjusting match block.
The deep initial value of the seam of the narrow side longitudinal joint radiating elementWherein λgInterior wave is led for center frequency
Long, b is waveguide narrow side size.
Beneficial effect
A kind of broadband of the face E focusing proposed by the present invention, Sidelobe, wide angle scanning waveguide narrow side mutually sweep antenna, mainly answer
For one-dimensional active phase-scan radar.The antenna includes antenna array, power divider and wave beam control machine；Antenna array is by 24
Waveguide narrow side longitudinal joint linear array composition, every linear array include 32 narrow side longitudinal joint radiating elements, 6 feed structures；The two of antenna array
Piece external position in portion's is fed a waveguide port in an array.The present invention provides a kind of completely new and-and narrow side waveguide gap array day
Line uses the waveguide narrow side apex drive structure of innovative design in every linear array, simplifies the design of linear array feeding network, improves
The bandwidth of operation of array antenna provides a kind of foundation to realize that the wide angle automatically controlled one-dimensional phase of scanning in face ± 60 ° H sweeps antenna.Advantage
It is as follows:
1, antenna array of the invention uses waveguide narrow side Longitudinal Slot Arrays, and array uses the apex drive structure of special designing
It is fed, antenna array has that the small radiation efficiency of wider bandwidth of operation, feeder loss is high, minor level is low, azimuth plane wave beam
It focuses；
2, antenna array advantageously reduces spacing between linear array using simultaneously-and narrow side waveguide feed form, realizes pitching
- 60 °~+60 ° of face phased scanning.
Detailed description of the invention
A kind of broadband of the face E focusing of Fig. 1 present invention, Sidelobe, wide angle scanning waveguide narrow side mutually sweep antenna assumption diagram
Fig. 2 inventive antenna battle array side back sight figure
Fig. 3 feed network structures figure of the present invention
Fig. 4 waveguide linear array cross-sectional view of the present invention
Fig. 5 waveguide linear array analogous diagram of the present invention
Fig. 6 indicates the basic, normal, high frequency directional diagram of waveguide linear array of the present invention
Fig. 7 indicates waveguide linear array input port standing wave pattern of the present invention
Fig. 8 shows the actual measurement pitching face of the embodiment of the present invention (face H) radar high frequency ± 60 ° range phased scanning directions
Specific embodiment
Now in conjunction with embodiment, attached drawing, the invention will be further described:
It includes antenna array 1, spoke that antenna is mutually swept in broadband, Sidelobe based on a kind of focusing of face E, wide angle scanning waveguide narrow side
Penetrate unit 2, feed port 3, waveguide linear array 4, feed structure 5；The antenna array 1 is using waveguide broadside and presents form, realizes
The wide band wave beam of azimuth plane focuses, the automatically controlled wide-angle scanning in pitching face, is made of 24 waveguide linear arrays 4, every waveguide linear array 4
Comprising 32 narrow side longitudinal joint radiating elements 2 and 2 feed structures 5, the seam by controlling longitudinal joint adjusts resonance frequency deeply, then passes through
The position of adjustment disturbance block 7, width, height adjustment gap radiation energy, realize that linear array Taylor amplitude weighting (realizes the low pair of linear array
Valve), realize broadband, the Sidelobe amplitude characteristic of waveguide linear array 4.Feed structure 5 and day are realized by adjusting the shape of match block 6
The matching of line linear array 4.
It is described below using X-band as specific example as follows:
Referring to Fig. 1, broadband that a kind of face E of the present invention focuses, Sidelobe, wide angle scanning waveguide narrow side mutually sweep antenna array 1,
Radiating element 2.
Referring to fig. 2, behind antenna array surface side of the invention, including feed port 3, waveguide linear array 4.Linear array 4 is by longitudinally arranging
32 narrow side longitudinal joint standing-wave antenna arrays of column form, and radiating element spacing selects 22.6mm, element number in each waveguide linear array
It is 32, gap width 3mm, waveguide outer dimension is 22mm × 12mm, inside dimension 20mm × 10mm, adjacent waveguide linear array spacing
For 15mm, feed port 3 is connect with T/R component.
Referring to Fig. 3, waveguide linear array partial schematic diagram of the invention, including feed structure 5, adjust match block 6, disturbance block 7,
Radiating slot 8.Waveguide linear array is by 6 different feed structures to each piece of progress power distribution of linear array；In each feed structure
The part that is connected with radiating guide of end of feeding network and radiating guide is completed by adjusting the shape for adjusting match block 6
Match, match block 6 is located among two radiating slots it having a size of 1mm (thickness) × 10mm (width) × 10mm (height)；By adjusting radiation
Sidelobe characteristic of the energy of mouth by setting value to space radiation realization antenna, spoke are divided function in seam 8 and the position for changing disturbance block 7
Penetrating 8 depth of seam is t=(λg/ 2-b)/2 wherein λgIt is waveguide narrow side size for center frequency channel combine, b, disturbance block 7 is close to spoke
Penetrate seam 8 edges its having a size of 3mm (length) × 2mm (width) × h (depth), h is directly proportional to radiation energy.In narrow side longitudinal joint radiating element
2 two sides are respectively equipped with disturbance block 7, and a disturbance block 7 is fitted on wave guide wall, and one is fitted on lower wave guide wall, and one
The disturbance block position arrangement of intermediate two narrow side longitudinal joint radiating elements 2 is consistent in cavity, and two narrow side longitudinal joints of two sides radiate single
The disturbance block position arrangement of member 2 with middle position arrangement on the contrary, than as shown in Figure 3, intermediate two narrow side longitudinal joint radiating elements 2
The right disturbance block 7 all be located at lower wave guide wall on, the disturbance block 7 on the left side of two narrow side longitudinal joint radiating elements 2 on both sides
It is all to be located on lower wave guide wall.
It is as shown in Figure 4,5 that antenna radiation pattern is surveyed on radar frequency point of the present invention.
See Fig. 4, the directional diagram of measured direction face (face E) radar different frequent points, the maximum minor lobe of all frequency points is respectively less than-
24dB。
See Fig. 5, surveys on radar center frequency point, in pitching face (face H) ± 60 ° of angular range antenna phased scannings and directions
Figure, is also respectively less than -25dB in the maximum minor lobe of institute's measuring angle.
See Fig. 6, survey waveguide linear array standing wave curve, 1.5 are respectively less than in 10% bandwidth.
As can be seen that high frequency is in ± 60 ° of scanning range from actual measurement directional diagram, radar directional diagram minor level can
Reach 25dB, scanning to 60 degree of range radar gains is directed toward compared with zero only declines 3.8dB or so, can satisfy one-dimensional active phase clearance
The normal use demand reached, to demonstrate the antenna system by using simultaneously-simultaneously narrow side Waveguide slot array antenna realization one
Tie up the validity of Connectors for Active Phased Array Radar ± 60 ° phased scanning.
Claims (2)
1. the broadband that a kind of face E focuses, Sidelobe, wide angle scanning waveguide narrow side mutually sweep antenna, it is characterised in that antenna array (1)
Using waveguide broadside and form is presented, is made of 24 waveguide linear arrays (4), every waveguide linear array (4) includes the radiating guide of front end
With the feeding network of rear end, 32 longitudinal joint radiating elements (2) are provided in the narrow side of radiating guide, feeding network includes 2 right
The feed structure (5) of title, each feed structure (5) are made of 3 evil spirit T, are four by one point of input feed, two feed structures
(5) waveguide linear array (4) is divided into 8 cavitys, corresponding 4 narrow side longitudinal joint radiating elements (2) in each cavity, corresponding evil spirit T input
It is equipped among two narrow side longitudinal joint radiating elements (2) of mouth and adjusts match block (6)；In the two sides of narrow side longitudinal joint radiating element (2)
It is respectively equipped with disturbance block (7), a disturbance block (7) is fitted on wave guide wall, and one is fitted on lower wave guide wall, a cavity
The disturbance block position arrangement of the narrow side longitudinal joint radiating element (2) of interior centre two is consistent, two narrow side longitudinal joint radiating elements of two sides
(2) disturbance block position arrangement is opposite with middle position arrangement；By the depth and width that adjust narrow side longitudinal joint radiating element (2)
And disturb the position of block (7), width, highly realize that the energy between each radiating element of radiating guide radiates ratio, realize linear array
Taylor's amplitude weighting；The Sidelobe of linear array is realized by adjusting the power-division ratios of feed structure (5) again；By adjusting match block
(6) matching of the feeding network of rear end and the radiating guide of front end is realized.
2. the broadband that a kind of face E according to claim 1 focuses, Sidelobe, wide angle scanning waveguide narrow side mutually sweep antenna,
It is characterized in that the deep initial value of the seam of the narrow side longitudinal joint radiating element (2)Wherein λgIt is led for center frequency interior
Wavelength, b are waveguide narrow side size.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811542655.6A CN109659709A (en) | 2018-12-17 | 2018-12-17 | A kind of broadband that the face E focuses, Sidelobe, wide angle scanning waveguide narrow side mutually sweep antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811542655.6A CN109659709A (en) | 2018-12-17 | 2018-12-17 | A kind of broadband that the face E focuses, Sidelobe, wide angle scanning waveguide narrow side mutually sweep antenna |
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| Publication Number | Publication Date |
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| CN109659709A true CN109659709A (en) | 2019-04-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811542655.6A Pending CN109659709A (en) | 2018-12-17 | 2018-12-17 | A kind of broadband that the face E focuses, Sidelobe, wide angle scanning waveguide narrow side mutually sweep antenna |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111864377A (en) * | 2020-07-29 | 2020-10-30 | 中国电子科技集团公司第十四研究所 | Broadband collinear seam waveguide slot antenna |
| CN112563754A (en) * | 2020-10-27 | 2021-03-26 | 安徽隼波科技有限公司 | High-integration-level integrated efficient sum-difference beam waveguide antenna |
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| US20070069966A1 (en) * | 2005-09-27 | 2007-03-29 | Elta Systems Ltd. | Waveguide slot antenna and arrays formed thereof |
| US20130154764A1 (en) * | 2011-12-06 | 2013-06-20 | Viasat, Inc. | In-phase h-plane waveguide t-junction with e-plane septum |
| CN103326125A (en) * | 2013-06-29 | 2013-09-25 | 中国人民解放军国防科学技术大学 | One-dimensional waveguide narrow slot antenna capable of scanning |
| CN106342367B (en) * | 2011-12-27 | 2014-09-03 | 中国航空工业集团公司雷华电子技术研究所 | The waveguide feed structure of waveguide broadside slot array antenna |
| CN205488545U (en) * | 2016-02-26 | 2016-08-17 | 上海欣国泰信息通信有限公司 | Broadband E - ground roll is led multistage merit and is divided feed network |
| CN207994082U (en) * | 2018-04-02 | 2018-10-19 | 珠海纳睿达科技有限公司 | Dual polarization Waveguide slot array antenna |
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2018
- 2018-12-17 CN CN201811542655.6A patent/CN109659709A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070069966A1 (en) * | 2005-09-27 | 2007-03-29 | Elta Systems Ltd. | Waveguide slot antenna and arrays formed thereof |
| US20130154764A1 (en) * | 2011-12-06 | 2013-06-20 | Viasat, Inc. | In-phase h-plane waveguide t-junction with e-plane septum |
| CN106342367B (en) * | 2011-12-27 | 2014-09-03 | 中国航空工业集团公司雷华电子技术研究所 | The waveguide feed structure of waveguide broadside slot array antenna |
| CN103326125A (en) * | 2013-06-29 | 2013-09-25 | 中国人民解放军国防科学技术大学 | One-dimensional waveguide narrow slot antenna capable of scanning |
| CN205488545U (en) * | 2016-02-26 | 2016-08-17 | 上海欣国泰信息通信有限公司 | Broadband E - ground roll is led multistage merit and is divided feed network |
| CN207994082U (en) * | 2018-04-02 | 2018-10-19 | 珠海纳睿达科技有限公司 | Dual polarization Waveguide slot array antenna |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111864377A (en) * | 2020-07-29 | 2020-10-30 | 中国电子科技集团公司第十四研究所 | Broadband collinear seam waveguide slot antenna |
| CN111864377B (en) * | 2020-07-29 | 2021-08-24 | 中国电子科技集团公司第十四研究所 | Broadband collinear seam waveguide slot antenna |
| CN112563754A (en) * | 2020-10-27 | 2021-03-26 | 安徽隼波科技有限公司 | High-integration-level integrated efficient sum-difference beam waveguide antenna |
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