CN104505595B - Wideband single-cavity waveguide slot resonant antenna - Google Patents
Wideband single-cavity waveguide slot resonant antenna Download PDFInfo
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- CN104505595B CN104505595B CN201410744296.8A CN201410744296A CN104505595B CN 104505595 B CN104505595 B CN 104505595B CN 201410744296 A CN201410744296 A CN 201410744296A CN 104505595 B CN104505595 B CN 104505595B
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Abstract
The invention relates to a wideband single-cavity waveguide slot resonant antenna. The antenna comprises a metallic waveguide tube with a rectangular cross section, wherein radiating slots are uniformly arranged on the two sides of a central line along the length direction on a wide side of the metallic waveguide tube in a staggering manner; more than two pairs of loading slots are also uniformly distributed on the wide side; each pair of loading slots are symmetrical about the central line of the length direction of the metallic waveguide tube and are positioned at the edges on the two sides of the wide side of the metallic waveguide tube respectively; the middle part in the metal waveguide tube is provided with a feed matching block; the feed matching block is connected with a coaxial connector; the coaxial connector is used for feeding the metallic waveguide tube through the feeding matching block. By additionally arranging the loading slots, the working bandwidth of the waveguide slot resonant antenna is enhanced, the weight of the antenna is reduced, and the height of the section of the antenna is reduced; by additionally arranging feed matching block, the impedance bandwidth for work of the antenna is increased; the antenna can easily translate along the same direction to form a planar array antenna; the antenna is connected with a T/R component, supplemented by a power supply, a wave control, a mounting structural member and the like, so a broadband active phased array antenna can be formed.
Description
Technical field
The invention belongs to Waveguide slot antenna technical field, specifically a kind of broadband single-chamber Waveguide slot resonant antenna.
The present invention can be not only used for receiving, can also be used for launching radio wave.In military aspect, can be used as the end of radar system
End antenna.At civilian aspect, can be used as antenna for base station, satellite ground mobile terminal antenna of communication etc..
Background technology
Application of the broad-band antenna in dual-use field is more and more extensive.Meanwhile, some in electronic equipment specifically should
With in, also such as：The particular/special requirement of volume, weight, loss and scan angle.
Wave guide slot array antenna as launch and receive electromagnetic signal antenna, due to its efficiency high, structural strength height etc.
Advantage, is widely used in thunderous and communication field.
For Waveguide slot resonant antenna, bandwidth is affected by unit number, cutoff wavelength and submatrix number, generally,
Resonant element number more at most bandwidth is narrower.(horse increases. Ha Madala, and waveguide parallel connection slot array wideband frequency is limited, international electricity
Gas and Electronic Engineering Association-Antennas And Propagation journal, Vol.37,1989, pp:817-823./M.Hamadallah,
Frequency limitations on broad-band performance of shunt slot arrays,IEEE
Trans Antenna Propagation Vol.37,1989,pp:817-823.；Wang Wei, Qi Meiqing, Jin Mouping, " waveguide is simultaneously
Connection gap resonance battle array bandwidth research ", modern electronic technology/supplementary issue, 2006.9, pp:178-180.；Wang Wei, clock up time, Qi Mei
Clearly, Liang Xianling, leans against Back-ridged waveguide feed wideband ridge waveguide slot array, microwave and light technology bulletin, and 2005,45 (2):
102-104/Wang Wei,Zhong Shun-Shi,Qi Mei-Qing and Liang Xian-Ling,Broadband
ridged waveguide slot antenna array fed by back-to-back ridged waveguide,
Mirowave and Optical Tech.Lett.,2005,45(2):102-104).In these researchs, Waveguide slot resonance battle array
Bandwidth broadning is depended on using submatrix method for designing, by power splitter to each submatrix feed excitation, so as to reduce list
The purpose of first number.This employing submatrix designing technique, the method for realizing broadband using waveguide power divider increased antenna section
Height, and increased the weight of antenna.
In a word, for current Waveguide slot resonant antenna, its bandwidth of operation is expanded, depends on and adopt submatrix
The method of design, using waveguide power divider stacked on top of one another to each submatrix feed.At aspects such as volume, weight, processing, costs
With larger inferior position, this is especially prominent in such as airborne and electronic equipment on satellite application.
The content of the invention
The present invention is intended to provide it is a kind of with good broadband, low-cross polarization characteristic, particularly antenna height compression,
The straight radiating slot antenna in rectangular waveguide broadside longitudinal direction of simple structure.
Specific technical solution is as follows：
Broadband single-chamber Waveguide slot resonant antenna includes metallic waveguide of the cross section for rectangle, the metallic waveguide
Two ends are respectively the first short-circuit end and the second short-circuit end, and the broadside of metallic waveguide centrage both sides along its length are uniformly handed over
Staggered arrangement row are provided with radiating slot；
The broadside of the metallic waveguide is also laid with the loading seam of more than two pairs；Each pair loading seam is with metallic waveguide
The centrage of length direction is symmetrical, and respectively positioned at the edge of the broadside both sides of metallic waveguide；Effect is to strengthen single-chamber ripple
The bandwidth of operation of seam guide gap resonant antenna；
Middle part is provided with feed match block in the metallic waveguide；The feed match block is lath-shaped, feeds match block
The contiguous block for raising up is respectively equipped with the top of two ends, match block is fed by the contiguous block at two ends and is connected to metallic waveguide
Inner chamber top surface；The central bottom of feed match block is provided with downwardly convex feed block, and feed block is connected to coaxial connector, together
The terminals of mandrel connector are extended outside the bottom of metallic waveguide；Coaxial connector is entered by feeding match block to metallic waveguide
Row feed；Effect is the impedance bandwidth for increasing the work of single-chamber Waveguide slot resonant antenna.
The long SL of seam of described radiating slot is 0.5 λ0, spacing Ls between adjacent radiation seam is 0.5 λg0, terminal radiation seam
Apart from waveguide terminal end face apart from Lsh be 0.25 λg0, a width of 2mm of seam of radiating slot, wherein λg0Centered on frequency wave guided wave
It is long；The long CSL of seam of the loading seam is 0.25 λ0, load a width of 2mm of seam, wherein λ of seam0Centered on frequency free space wavelength；
Spacing between adjacent load seam is the integral multiple of spacing Ls between adjacent radiation seam.
The broadband single-chamber Waveguide slot resonant antenna of more than two is connected in parallel composition broadband single-chamber Waveguide slot resonance day
Linear array.
The Advantageous Effects of the present invention embody in the following areas：
1st, loading gap is set up on the resonant antenna of conventional waveguide gap, the directional diagram of Waveguide slot resonant antenna is enhanced
Bandwidth of operation, directional diagram bandwidth of operation increases to 8.9% by original 2.6%, reduces the weight of antenna, and antenna weights are reduced
To original 2/3, the section height of antenna is reduced, the section height of antenna is reduced to original 1/2；
2nd, the Waveguide slot antenna of central coaxial adapter feed increased day using the feed matching Block- matching of lath-shaped
The impedance bandwidth of line work, impedance bandwidth increases to 9.5% by original 5.3%；
3rd, the present invention is easy to translate to form planar array antenna in the same direction, by being connected with T/R components, is aided with electricity
Source, ripple control and mounting structure etc. can form broadband active phased array antenna；
4th, present configuration is simple, difficulty of processing is low, and cost is few.
Description of the drawings
Fig. 1 is inventive antenna axonometric chart.
Fig. 2 is the cross-sectional view of metallic waveguide of the present invention.
Fig. 3 is the partial sectional view of Fig. 1.
Fig. 4 is the partial enlarged drawing of Fig. 3.
Fig. 5 is the top view of Fig. 1.
Fig. 6 is Fig. 1 sectional views along its length.
Fig. 7 is 8 × 16 element antenna battle array schematic diagrams of the invention.
Fig. 8 is 16 element antenna of the invention and the traditional Waveguide slot of Unit 16 resonant antenna standing-wave ratio correlation curve.
Fig. 9 is 16 element antenna of the invention and the traditional Waveguide slot of Unit 16 resonant antenna 9.05GHz directional diagrams and contrast
Curve.
Figure 10 is 16 element antenna of the invention and the traditional Waveguide slot of Unit 16 resonant antenna 9.55GHz directional diagrams and contrast
Curve.
Figure 11 is 16 element antenna of the invention and the traditional Waveguide slot of Unit 16 resonant antenna 9.9GHz directional diagrams and contrast
Curve.
Figure 12 is 8 × 16 element antenna intermediate frequency directional diagram curves of the invention.
Number explanation in Fig. 1-6：Metallic waveguide 1, radiating slot 2, loading seam the 3, first short-circuit end 4, the second short-circuit end 5,
Coaxial connector 6, feed match block 7, contiguous block 71, feed block 72.
Specific embodiment
Below in conjunction with the accompanying drawings, the present invention is further described by embodiment.
Embodiment 1
The broadband single-chamber Waveguide slot resonant antenna of the present embodiment works in X-band, and operating center frequency is f0For
9.55GHz, lower side frequency fLFor 9.05GHz, upper side frequency fHFor 9.9GHz.Mid frequency waveguide wavelength λg0For 48.6mm, center frequency
Rate free space wavelength λ0For 31.4mm.
Referring to Fig. 1, broadband single-chamber Waveguide slot resonant antenna includes metallic waveguide 1 of the cross section for rectangle, sees Fig. 2,
The range of choice of the lumen width a of metallic waveguide 1 is：0≤a≤0.9 λ H (λ H are up-conversion free space wavelength), this enforcement
Example a is 20.4mm；The range of choice of cavity heights b is：0 ＜ b≤a, the present embodiment is preferably：B=8mm；Metallic waveguide 1
Wall thickness t is 1mm.The two ends of metallic waveguide 1 are respectively the first short-circuit end 4 and the second short-circuit end 5, the broadside of metallic waveguide 1
(top surface) centrage both sides along its length are uniformly staggered and offer 16 radiating slots 2；In the present embodiment, radiating slot 2
Length SL be 0.5 λ0, i.e. SL=15.2mm, a width of 2mm of seam；The distance center line of radiating slot 2 apart from Sp be less than 0.5a, this reality
A Sp is applied for 2mm.Centre distance Ls between adjacent radiation seam 2 is 0.5 waveguide wavelength, i.e. 24.3mm.It is adjacent with short-circuit end
Spacing Lsh between the center of radiating slot 2 and the first short-circuit end 4 or the second short-circuit end 5 is for 0.25 waveguide wavelength, i.e. Lsh
12.15mm。
Referring to Fig. 5, the broadside of metallic waveguide 1 is also laid with three pairs of loading seams 3, and each pair loading seam 3 is with metal waveguide
The centrage in length of tube direction is symmetrical, and respectively positioned at the top surface both sides of the edge of metallic waveguide 1；Loading seam 3 deviates metal wave
The longitudinal centre line of conduit 1 is less than 0.5a apart from CSp, and the present embodiment is preferably 9mm, the long CSL of seam of loading seam 3 is 0.25
λ0, the present embodiment is preferably 8mm, stitches a width of 2mm；Spacing between adjacent load seam is spacing Ls between adjacent radiation seam
Integral multiple, the present embodiment is preferably 97.2mm.The effect of loading seam 3 is the work band for strengthening single-chamber Waveguide slot resonant antenna
It is wide.
Referring to Fig. 3, Fig. 4 and Fig. 6, middle part is provided with feed match block 7 in metallic waveguide 1.Feed match block 7 is lath
Shape, the length for feeding match block 7 is the integral multiple that TL is Ls, and the present embodiment is preferably 194.4mm；Feed match block 7 two ends
Top is respectively equipped with the contiguous block 71 for raising up, and feeds match block 7 by the contiguous block 71 at two ends and is connected to metallic waveguide 1
Inner chamber top surface, the height Th≤0.5b of the feed match block 7 at contiguous block 71, the present embodiment is preferably 4.2mm；Contiguous block 71
Length Tw be 1mm～0.25Ls between, the present embodiment is preferably 9.5mm, the width Te≤0.5a of contiguous block 71, the present embodiment
Preferably 7mm；The thickness Twh at the middle part of feed match block 7 is that the present embodiment is preferably 1.8mm between 1mm～0.8Th；Feed
Central bottom with block 7 is provided with downwardly convex feed block 72, and length Mw for feeding block 72 is this enforcement between 2mm～0.5TL
Example is preferably 5mm, feeds the thickness Mh≤0.5b of block 72, and the present embodiment is preferably 1.2mm；Feed block 72 is connected to coaxially connected
Device 6, the terminals of coaxial connector 6 are extended outside the bottom of metallic waveguide 1；Coaxial connector 6 is by feed match block 7 to gold
Category waveguide 1 is fed；Effect is the impedance bandwidth for increasing the work of single-chamber Waveguide slot resonant antenna.
The element antenna of the present embodiment 16 and the traditional Waveguide slot of Unit 16 resonant antenna standing wave correlation curve and low frequency, in
Frequently, high frequency typical case antenna pattern correlation curve is referring to shown in Fig. 8 to Figure 11, it can be seen that in same unit number, cutoff wavelength
In the case of submatrix number, the present invention is in impedance bandwidth and directional diagram bandwidth than traditional Waveguide slot resonant antenna broadening
A lot.
Embodiment 2
Referring to Fig. 7, the Waveguide slot antenna of Unit 8 × 16 submatrix 16 yuan of linear arrays as shown in Figure 1 are translated in the same direction
Form, i.e., be connected in parallel by eight broadband single-chamber Waveguide slot resonant antennas and constitute broadband single-chamber Waveguide slot resonant antenna battle array.
The intermediate frequency typical directions figure of the inventive embodiments is as shown in figure 12.This submatrix is connected with T/R components, is aided with power supply, ripple control and peace
Building element etc. can be extended to large-scale Subarray active phase array antenna.
Above content is to combine the detailed description made for the present invention of specific preferred implementation, it is impossible to assert the present invention
It is embodied as being only limitted to these explanations.For those skilled in the art, without departing from structure of the present invention
On the premise of think of, some simple deduction or replace can also be made, such as to ridge waveguide gap resonant antenna, all should be considered as belonging to
The invention protection domain that the present invention is determined by the claims submitted to.
Claims (5)
1. broadband single-chamber Waveguide slot resonant antenna, including cross section is the metallic waveguide of rectangle, the metallic waveguide
Two ends are respectively the first short-circuit end and the second short-circuit end, and the broadside of metallic waveguide centrage both sides along its length are uniformly handed over
Staggered arrangement row are provided with radiating slot, it is characterised in that：The broadside of the metallic waveguide is also laid with the loading seam of more than two pairs；Often
It is symmetrical with the centrage of metallic waveguide length direction to loading seam, and respectively positioned at the side of the broadside both sides of metallic waveguide
Edge；Effect is the bandwidth of operation for strengthening single-chamber Waveguide slot resonant antenna；
Middle part is provided with feed match block in the metallic waveguide；The feed match block is lath-shaped, feeds match block two ends
Top be respectively equipped with the contiguous block for raising up, match block is fed by the contiguous block at two ends and is connected in metallic waveguide
Chamber top surface；The central bottom of feed match block is provided with downwardly convex feed block, and feed block is connected to coaxial connector, coaxially connects
The terminals for connecing device are extended outside the bottom of metallic waveguide；Coaxial connector is presented by feeding match block to metallic waveguide
Electricity；Effect is the impedance bandwidth for increasing the work of single-chamber Waveguide slot resonant antenna.
2. single-chamber Waveguide slot resonant antenna in broadband according to claim 1, it is characterised in that：The metallic waveguide
Top surface is laid with three pairs of loading seams.
3. single-chamber Waveguide slot resonant antenna in broadband according to claim 1 and 2, it is characterised in that：Described radiating slot
The long SL of seam be 0.5 λ0, spacing Ls between adjacent radiation seam is 0.5 λg0, terminal radiation seam apart from waveguide terminal end face away from
It is 0.25 λ from Lshg0, a width of 2mm of seam of radiating slot, wherein λg0Centered on frequency waveguide wavelength；The long CSL of seam of the loading seam
For 0.25 λ0, load a width of 2mm of seam, wherein λ of seam0Centered on frequency free space wavelength；Adjacent load seam between spacing be
The integral multiple of spacing Ls between adjacent radiation seam.
4. single-chamber Waveguide slot resonant antenna in broadband according to claim 1, it is characterised in that：The broadband list of more than two
Cavity waveguide gap resonant antenna is connected in parallel composition broadband single-chamber Waveguide slot resonant antenna battle array.
5. single-chamber Waveguide slot resonant antenna in broadband according to claim 4, it is characterised in that：Eight broadband single-chamber waveguides
Gap resonant antenna is connected in parallel the unit broadband single-chamber Waveguide slot resonant antenna battle array of composition 8 × 16.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410744296.8A CN104505595B (en) | 2014-12-09 | 2014-12-09 | Wideband single-cavity waveguide slot resonant antenna |
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| CN201410744296.8A CN104505595B (en) | 2014-12-09 | 2014-12-09 | Wideband single-cavity waveguide slot resonant antenna |
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| CN104505595B true CN104505595B (en) | 2017-04-19 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107302404B (en) * | 2017-07-05 | 2020-07-28 | 西安交通大学 | Near-field coupling passive intermodulation test device based on square coaxial structure |
| CN108539414B (en) * | 2018-03-29 | 2023-11-14 | 中国电子科技集团公司第三十八研究所 | Compact-structure light high-efficiency slot antenna and antenna array |
| CN109659684B (en) * | 2018-12-20 | 2024-01-19 | 中国科学院上海微***与信息技术研究所 | Forward-tilting double-slit antenna and manufacturing method thereof |
| CN109802240B (en) * | 2018-12-29 | 2024-04-02 | 南京信息职业技术学院 | Circular polarization slot antenna based on rectangular waveguide |
| 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 |
| CN113782985A (en) * | 2021-08-19 | 2021-12-10 | 中国工程物理研究院应用电子学研究所 | High-power broadside longitudinal-slit waveguide slot array |
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| CN201397880Y (en) * | 2009-05-22 | 2010-02-03 | 中国电子科技集团公司第三十八研究所 | Wave-guide slot array in frequency-selective wideband |
| CN101814661A (en) * | 2009-11-20 | 2010-08-25 | 天津工程师范学院 | Trapezoidal waveguide slot array antenna unit |
| CN204333277U (en) * | 2014-12-09 | 2015-05-13 | 中国电子科技集团公司第三十八研究所 | Single cavity waveguide gap, broadband resonant antenna |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10126469A1 (en) * | 2001-05-31 | 2002-12-12 | Eads Deutschland Gmbh | Slot radiating element |
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2014
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|---|---|---|---|---|
| US5210543A (en) * | 1988-12-20 | 1993-05-11 | Hughes Aircraft Company | Feed waveguide for an array antenna |
| CN201397880Y (en) * | 2009-05-22 | 2010-02-03 | 中国电子科技集团公司第三十八研究所 | Wave-guide slot array in frequency-selective wideband |
| CN101814661A (en) * | 2009-11-20 | 2010-08-25 | 天津工程师范学院 | Trapezoidal waveguide slot array antenna unit |
| CN204333277U (en) * | 2014-12-09 | 2015-05-13 | 中国电子科技集团公司第三十八研究所 | Single cavity waveguide gap, broadband resonant antenna |
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