CN108075235A - A kind of vertical slot-waveguide antenna - Google Patents
A kind of vertical slot-waveguide antenna Download PDFInfo
- Publication number
- CN108075235A CN108075235A CN201711399971.8A CN201711399971A CN108075235A CN 108075235 A CN108075235 A CN 108075235A CN 201711399971 A CN201711399971 A CN 201711399971A CN 108075235 A CN108075235 A CN 108075235A
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- waveguide
- metal platform
- vertical
- clearance gap
- vertical clearance
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- 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
-
- 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
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- Waveguide Aerials (AREA)
Abstract
The invention discloses a kind of vertical slot-waveguide antennas, slit source sonic wave guide and waveguide coaxial converter including interconnection, the slit source sonic wave guide includes waveguide, several vertical clearance gaps being arranged in waveguide narrow side, several metal platforms are provided in the waveguide, metal platform is located at the both sides of vertical clearance gap respectively, and the side of metal platform and the side of vertical clearance gap are located at same vertical plane；Several vertical clearance gaps are offered on waveguide, metal platform is provided with by vertical clearance gap, waveguide coaxial converter introduces the energy of feeder line among slit source sonic wave guide, and the electromagnetic field of waveguide has been encouraged using waveguide coaxial converter, and it is made to be propagated in waveguide, during propagation, electromagnetic field is distorted by metal platform, and electromagnetic energy is allow effectively to go out by intermetallic slot leakage, realizes the low sidelobe characteristic of antenna, low-cross polarization characteristic, low-loss and small size feature.
Description
Technical field
The present invention relates to microwave technical fields more particularly to one kind to be applied to vehicle-mounted, airborne, carrier-borne, missile-borne, meteorology, boat
Many vertical slot-waveguide antennas such as pipe, port pipe radar system.
Background technology
Waveguide slot antenna is with radar system development and the product of birth, and the ground appeared in earliest in World War II is prevented
Empty radar, with continuously improving for processing technology, scientific and technological continuous progress, new antenna emerges in an endless stream, and operation strategies are also more
Extensively, civil field is extended to from national defence, military aspect includes all kinds of early warning radars, guidance radar, detection radar etc., the people
There are weather radar, air traffic control radar, maritime affairs radar etc. with aspect.
The basic model of Waveguide slot antenna is that one or more gaps, spoke are cut on the side wall of rectangular metal waveguide
It is that the leak electromagnetic energy propagated among waveguide is gone out by gap to penetrate mechanism, so as to generate effective radiation.Therefore this day
Line has the features such as compact-sized, good mechanical property, radiation efficiency is high, and power capacity is big.
Document " design of Broadband Single Ridge Waveguide Slot Arrays " (delivers periodical：Research institute of China Electronics journal；It delivers
Date：2007；Author：Jin Jian, Wang Wei, Wan Xiaomei) a kind of single ridged waveguides broadside slot array is proposed, the antenna is with list
Ridge waveguide cut 16 equidimension level straights, gap spacing is λ as carrier on its broadsideg/ 2, and be divided into
4 submatrixs, pass behind one 1：4 waveguide power dividers are into row energization.The antenna is in the range of 8.8~9.9GHz, VSWR<1.5
Maximum sidelobe level-the 12.0dB in frequency band.The antenna reduces the section height of standard waveguide by the way of single ridged waveguides,
But its lateral dimension is not reduced, and secondary lobe is excessively high, can not meet the requirement that actual radar uses.
Document " research and design of inclined slot on the narrow wall antenna " (delivers periodical：Radar science and technology；Date issued：
2013；Author：Wei Chunhai, Li Gang) a kind of antenna array to crack in waveguide narrow side is illustrated, which cuts in narrow side
Inclined slot realizes the appropriate Aperture distribution of antenna by controlling inclination angle and the depth of cut in each gap, 35dB has been taken in text
Taylor weighting.The results show has reached the secondary lobe below -32dB in final text.Simulation result is only provided in text, is not informed
The concrete structure of antenna does not illustrate the feeding classification of antenna yet, but what is certain is that R-joining cutting can introduce larger friendship
Polarization components are pitched, too high cross polarization can limit the use scope of antenna.
Document " broadband diaphragm excitation waveguide narrow side non-inclined slot array antenna " (table periodical：Microwave journal；Deliver day
Phase：2005；Author：Wang Wei, Jin Jian, clock up time) a kind of new energisation mode of non-inclined seam is proposed, by a pair of trapezoidal gold
Belong to diaphragm and be positioned over gap both sides, diaphragm is close on the broadside and top narrow side of waveguide, constructs a kind of narrow side non-inclined seam
The wave guide wave leakage antenna battle array of gap.And pass through one 1：4 waveguide power divider is fed, and finally realizes the friendship below -39dB
Polarization signal is pitched, but since antenna is to be uniformly distributed, so secondary lobe only has -12dB.
In short, or Waveguide slot antenna volume described above is larger, cross polarization is higher or complicated, adds
Work is of high cost, so there is presently no meet low-cross polarization and the Waveguide slot day of low sidelobe requirement while volume is reduced
Line.
The content of the invention
In order to overcome the above-mentioned deficiencies of the prior art, the present invention provides a kind of size is small, processing is simple, and with low
Cross polarization, the vertical slot-waveguide antenna of low sidelobe.
To achieve these goals, the technical solution adopted by the present invention is：
A kind of vertical slot-waveguide antenna, slit source sonic wave guide and waveguide coaxial converter including interconnection are described
The vertical clearance gap that slit source sonic wave guide includes waveguide, several depth being arranged in waveguide narrow side differ, the waveguide
The different metal platform of several length is inside provided with, metal platform is located at the both sides of vertical clearance gap respectively.
As being further improved for said program, waveguide is divided into different sections, same section by the vertical clearance gap
Interior metal platform is arranged on front and rear homonymy, and the metal platform of the vertical clearance gap both sides sets up separately in front and rear sides.
As being further improved for said program, the length distance in each section is equal, the side of metal platform and vertical lap seam
The side of gap is located at same vertical plane.
As being further improved for said program, the width all same of the vertical clearance gap, the depth of vertical clearance gap is not
Identical, the depth of vertical clearance gap is located at 0.1-0.2 λ0Between.
As being further improved for said program, the metal platform be trapezoidal metal platform, the bottom of the trapezoidal metal platform
While being close to the inner wall of the waveguide, the bottom of the trapezoidal metal platform is less than 0.4 λ0, upper bottom edge is less than 0.3 λ0。
As being further improved for said program, the width of the trapezoidal metal platform and the high all same of waist.
As being further improved for said program, the waveguide coaxial converter is closed including one end, the pressure of one end open
Contracting wave-guide cavity wave, the blind end of contracting waveguide cavity are fixed with sub-miniature A connector, and openend is connected with waveguide.
As being further improved for said program, one end of the waveguide is provided with several first erecting beds, the pressure
The openend of contracting wave-guide cavity wave is provided with the second erecting bed with the cooperation of the first erecting bed.
As being further improved for said program, bending copper core, the bending copper are provided in the contracting waveguide cavity
One end of core is connected with sub-miniature A connector, and the other end is connected with contracting waveguide cavity inner wall.
As being further improved for said program, the waveguide include waveguide metal chamber and upper cover, the metal platform with
Upper cover connects.
Beneficial effects of the present invention：
A kind of vertical slot-waveguide antenna of the present invention, several vertical clearance gaps are offered on waveguide, are set by vertical clearance gap
Metal platform is equipped with, waveguide coaxial converter introduces the energy of feeder line among slit source sonic wave guide, utilizes waveguide coaxial converter
The electromagnetic field of waveguide has been encouraged, and it is made to be propagated in waveguide, during propagation, electromagnetic field is distorted by metal platform, is made
Electromagnetic energy can effectively be gone out by intermetallic slot leakage, realize the low sidelobe characteristic of antenna, and low-cross polarization is special
Property, low-loss and small size feature；This compact structure can be placed on variety carrier, suitable for a variety of occasions, especially
It is suitable for Large Phased Array Radar system, this fabricated structure is more conducive to the debugging and maintenance of antenna in addition.
Description of the drawings
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described.Obviously, described attached drawing is the part of the embodiment of the present invention rather than all implements
Example, without creative efforts, other that can also be obtained according to these attached drawings are set those skilled in the art
Meter scheme and attached drawing：
Fig. 1 is present pre-ferred embodiments structure diagram；
Fig. 2 is the decomposition diagram of present pre-ferred embodiments waveguide coaxial converter；
Fig. 3 is the half-section diagram of present pre-ferred embodiments waveguide；
Fig. 4 is the structure diagram of present pre-ferred embodiments metal platform；
Fig. 5 is the stickogram of present pre-ferred embodiments waveguide narrow side leaky antenna battle array；
Fig. 6 is the antenna pattern of present pre-ferred embodiments waveguide narrow side leaky antenna battle array.
Specific embodiment
The technique effect of the design of the present invention, concrete structure and generation is carried out below with reference to embodiment and attached drawing clear
Chu is fully described by, to be completely understood by the purpose of the present invention, feature and effect.Obviously, described embodiment is this hair
Bright part of the embodiment rather than whole embodiments, based on the embodiment of the present invention, those skilled in the art is not paying
The other embodiment obtained on the premise of creative work, belongs to the scope of protection of the invention.
Referring to figs. 1 to Fig. 4, a kind of vertical slot-waveguide antenna, slit source sonic wave guide 1 and waveguide including interconnection are same
Axis converter 2, the slit source sonic wave guide 1 includes waveguide 101, several depth being arranged in 101 narrow side of waveguide differ
Vertical clearance gap 102, be provided with the different metal platform 103 of several length in the waveguide 101, metal platform 103 is located at respectively
The both sides of vertical clearance gap 102, the side of metal platform 103 are located at same vertical plane with the side of vertical clearance gap 102.
The waveguide coaxial converter 2 is closed including one end, the contracting waveguide cavity 201 of one end open, compressional wave guide cavity
The blind end of body 201 is fixed with sub-miniature A connector 202, and openend is connected with waveguide 101.It is set in the contracting waveguide cavity 201
There is bending copper core 204, one end of the bending copper core 204 is connected with sub-miniature A connector 202, in the other end and contracting waveguide cavity 201
Wall connects, and electromagnetic wave is transmitted to bending copper core 204 by sub-miniature A connector 202, and electromagnetic wave is passed to compressional wave by bending copper core 204
201 inner wall of guide cavity body, is propagated with certain pattern in waveguide 101.
General wave guide slot array antenna is first document among Symmetrical array, such as background technology and the 3rd
The antenna array referred in document, sidelobe level is higher, does not have universal applicability or works as narrow side rake joist, such as background technology
In the antenna array that refers to of second document, cross polarization level is higher, limits its use scope.And quite a few uses ripple
The form for leading power splitter carries out parallelly feeding, this causes waveguide rear also to need to place one piece of larger power splitter of volume, not only damages
The overall dimensions of antenna have also been significantly greatly increased in energy consumption.
This antenna is first introduced the energy of feeder line among slit source sonic wave guide 1 by waveguide coaxial converter 2, and utilization is curved
Folding copper core 204 has encouraged the TE that slit source sonic wave guide 1 is led10Pattern electromagnetic field, and it is made to be propagated in waveguide 101, it is propagating
During, electromagnetic field is distorted by metal platform 103, allows electromagnetic energy effectively by the vertical clearance gap between metal platform 103
102 let out.
Electromagnetic wave disturbs during propagation through metal platform 103, has part electromagnetic energy and passes through hanging down on waveguide 101
Straight slot 102 lets out, and is distributed the design for carrying out vertical clearance gap 102 and metal platform 103 in the present apparatus according to certain Taylor,
The regular distribution of electromagnetic energy that each vertical clearance gap 102 is radiate, therefore achieved the effect that low sidelobe radiates.Additionally since
What is cut on waveguide 101 is vertical masonry joint, the cross polar component very little of introducing, so the antenna cross-polarization level in the present apparatus
Also it is very low.
One end of the waveguide 101 is provided with several first erecting beds 104, the opening of the contracting waveguide cavity 201
End is provided with the second erecting bed 203 with the cooperation of the first erecting bed 104, and waveguide 101 passes through first with contracting waveguide cavity 201
104 and second erecting bed 203 of erecting bed, which cooperates, to be connected.
The waveguide 101 includes waveguide metal chamber 105 and upper cover 106, and the metal platform 103 is connected with upper cover 106, ripple
It leads after separate structure separate machined can be used with upper cover 106 in wire chamber 105 and is assembled again, 3D printing or die sinking also can be used
The different integral shaping method such as cast carries out integral manufacturing so that 103 one of waveguide metal chamber 105, upper cover 106 and metal platform
Shaping.
Waveguide 101 is divided into different sections by the vertical clearance gap 102, and the metal platform 103 in same section is arranged on
Front and rear homonymy, the metal platform 103 of 102 both sides of vertical clearance gap set up separately in front and rear sides.
Gap size and metal platform size are different in the present invention, and the amplitude weighting of antenna is realized with this, the present invention
It is designed by Taylor's weighting of -30dB.The Sidelobe characteristic of antenna array is realized, the design of vertical clearance gap 102 reduces day
The cross polarization level of line.
Siding-to-siding block length between each vertical clearance gap 102 hangs down apart from equal, the width all same of the vertical clearance gap 102
The depth of straight slot 102 differs, and the depth of vertical clearance gap 102 is located at 0.1-0.2 λ0Between, λ0For the waveguide wavelength of input.
In the present embodiment, the width of vertical clearance gap 102 is 5mm, and depth is between 17mm~20mm.
With reference to Fig. 4, the metal platform 103 is trapezoidal metal platform, the high C all sames of width h and waist of the trapezoidal metal platform.
The bottom B of the trapezoidal metal platform is close to the inner wall of the waveguide 101, and the bottom B of the trapezoidal metal platform is less than 0.4
λ0, upper bottom edge A is less than 0.3 λ0.The centre frequency of waveguide narrow side leaky antenna battle array work is 2.85GHz, and the high C of bucking ladder waist is
5mm, upper bottom edge A are 0.6 times of bottom B, and width h is 5mm, and the value range of bottom B is 5mm~40mm.
With reference to the experimental data of Fig. 5 and Fig. 6, the waveguide narrow side in this preferred embodiment is opened using ANSYS HFSS softwares
Seam antenna array is modeled emulation, and simulated return loss is as shown in figure 5, figure acceptance of the bid shows -10dB datum lines, it is illustrated that shows
The antenna can be in the frequency point centered on 2.85GHz, the band operation of each 150MHz in left and right.Fig. 6 gives the antenna and exists
Antenna pattern under 2.85GHz, main beam sidelobe level are -27.7dB, in 3dB beam areas cross polarization level less than -
49.85dB。
Data show that this structure realizes the low sidelobe characteristic of antenna, low-cross polarization characteristic, low-loss and small ruler
Very little feature can be applied to a variety of occasions, be particularly suitable for Large Phased Array Radar system.
The above are being illustrated to presently preferred embodiments of the present invention, but the invention is not limited to the implementation
Example, those skilled in the art can also make a variety of equivalent modifications on the premise of without prejudice to spirit of the invention or replace
It changes, these equivalent modifications or replacement are all contained in the application claim limited range.
Claims (10)
1. a kind of vertical slot-waveguide antenna, it is characterised in that：Slit source sonic wave guide (1) and Waveguide coaxial including interconnection
Converter (2), the slit source sonic wave guide (1) include waveguide (101), several depths being arranged in waveguide (101) narrow side
The vertical clearance gap (102) to differ is spent, the different metal platform of several length (103), metal platform are provided in the waveguide (101)
(103) it is located at the both sides of vertical clearance gap (102) respectively.
2. vertical slot-waveguide antenna according to claim 1, it is characterised in that：The vertical clearance gap (102) is by waveguide
Pipe (101) is divided into different sections, and the metal platform (103) in same section is arranged on front and rear homonymy, the vertical clearance gap (102)
The metal platform (103) of both sides sets up separately in front and rear sides.
3. vertical slot-waveguide antenna according to claim 2, it is characterised in that：The length distance in each section is equal,
The side of metal platform (103) is located at same vertical plane with the side of vertical clearance gap (102).
4. vertical slot-waveguide antenna according to claim 1, it is characterised in that：The width of the vertical clearance gap (102)
All same, the depth of vertical clearance gap (102) differ, and the depth of vertical clearance gap (102) is located at 0.1-0.2 λ0Between.
5. vertical slot-waveguide antenna according to claim 1, it is characterised in that：The metal platform (103) is trapezoidal gold
Belong to platform, the inner wall of the waveguide (101) is close in the bottom of the trapezoidal metal platform, and the bottom of the trapezoidal metal platform is small
In 0.4 λ0, upper bottom edge is less than 0.3 λ0。
6. vertical slot-waveguide antenna according to claim 5, it is characterised in that：The width and waist of the trapezoidal metal platform
High all same.
7. vertical slot-waveguide antenna according to claim 1, it is characterised in that：Waveguide coaxial converter (2) bag
One end closing is included, the contracting waveguide cavity (201) of one end open, the blind end of contracting waveguide cavity (201) is fixed with sub-miniature A connector
(202), openend is connected with waveguide (101).
8. vertical slot-waveguide antenna according to claim 7, it is characterised in that：One end of the waveguide (101) is set
Several first erecting beds (104) are equipped with, the openend of the contracting waveguide cavity (201) is provided with and the first erecting bed (104)
The second erecting bed (203) of cooperation.
9. vertical slot-waveguide antenna according to claim 7, it is characterised in that：In the contracting waveguide cavity (201)
Bending copper core (204) is provided with, one end of the bending copper core (204) is connected with sub-miniature A connector (202), the other end and compressional wave
Guide cavity body (201) inner wall connects.
10. vertical slot-waveguide antenna according to claim 1, it is characterised in that：The waveguide (101) includes waveguide
Wire chamber (105) and upper cover (106), the metal platform (103) are connected with upper cover (106).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711399971.8A CN108075235A (en) | 2017-12-22 | 2017-12-22 | A kind of vertical slot-waveguide antenna |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711399971.8A CN108075235A (en) | 2017-12-22 | 2017-12-22 | A kind of vertical slot-waveguide antenna |
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| Publication Number | Publication Date |
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| CN108075235A true CN108075235A (en) | 2018-05-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711399971.8A Pending CN108075235A (en) | 2017-12-22 | 2017-12-22 | A kind of vertical slot-waveguide antenna |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112542696A (en) * | 2020-12-04 | 2021-03-23 | 南京天朗防务科技有限公司 | Waveguide slot antenna |
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| JP2007221585A (en) * | 2006-02-17 | 2007-08-30 | Furuno Electric Co Ltd | Antenna and manufacturing method thereof |
| CN102299421A (en) * | 2011-05-31 | 2011-12-28 | 西安空间无线电技术研究所 | Amplitude-phase weighed narrow waveguide slot array antenna |
| CN102496784A (en) * | 2011-11-11 | 2012-06-13 | 中国电子科技集团公司第三十八研究所 | Ridge waveguide broad-side horizontal straight slot antenna |
| CN102709681A (en) * | 2012-06-25 | 2012-10-03 | 南京长江电子信息产业集团有限公司 | High insulation wave guide crevice transmitting/receiving antenna |
| CN105789805A (en) * | 2016-03-08 | 2016-07-20 | 江苏恒达微波技术开发有限公司 | Waveguide coaxial conversion device |
| CN207638004U (en) * | 2017-12-22 | 2018-07-20 | 珠海纳睿达科技有限公司 | A kind of vertical slot-waveguide antenna |
-
2017
- 2017-12-22 CN CN201711399971.8A patent/CN108075235A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007221585A (en) * | 2006-02-17 | 2007-08-30 | Furuno Electric Co Ltd | Antenna and manufacturing method thereof |
| CN102299421A (en) * | 2011-05-31 | 2011-12-28 | 西安空间无线电技术研究所 | Amplitude-phase weighed narrow waveguide slot array antenna |
| CN102496784A (en) * | 2011-11-11 | 2012-06-13 | 中国电子科技集团公司第三十八研究所 | Ridge waveguide broad-side horizontal straight slot antenna |
| CN102709681A (en) * | 2012-06-25 | 2012-10-03 | 南京长江电子信息产业集团有限公司 | High insulation wave guide crevice transmitting/receiving antenna |
| CN105789805A (en) * | 2016-03-08 | 2016-07-20 | 江苏恒达微波技术开发有限公司 | Waveguide coaxial conversion device |
| CN207638004U (en) * | 2017-12-22 | 2018-07-20 | 珠海纳睿达科技有限公司 | A kind of vertical slot-waveguide antenna |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112542696A (en) * | 2020-12-04 | 2021-03-23 | 南京天朗防务科技有限公司 | Waveguide slot antenna |
| CN112542696B (en) * | 2020-12-04 | 2022-05-24 | 南京天朗防务科技有限公司 | Waveguide slot antenna |
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