CN102427171A - Ka wave band flat plate gap array antenna monopulse feed network - Google Patents
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Abstract
The invention discloses a Ka wave band flat plate gap array antenna monopulse feed network. The feed network is composed of parts such as a radiation gap feed layer, a power distribution network, a monopulse network and the like, wherein the power distribution network adopts a feed waveguide broadside opening inclined joint form, and is used for carrying out coupling feed on the radiation gap feed layer and controlling the feed power through adjusting a feed waveguide centre gap tilt angle; the monopulse network adopts four flat surface magic Ts to form a sum and difference channel in a bell socket manner, and is used for feeding to the power distribution network through a coupling gap, and each flat surface magic T is provided with an inverted-step-shaped metallic membrane, which is used for carrying out voltage standing wave ratio distribution and improving standing wave band width and amplitude-phase consistency band width of each magic T; and coupling folded wave guide is adopted, thus the array radiation gaps are arranged at the same interval, the distance between the last feed inclined joint and the short-circuit end is 1/2 waveguide wavelength, and the problem of mutual interference among feed waveguides is solved.
Description
The present invention relates to a kind of millimeter wave microwave device, relate in particular to the dull and stereotyped slot array antenna pulse of a kind of Ka wave band feeding network, be used to realize the sum-difference network function of millimeter wave antenna.
Technical background
Millimetre wavelength is between infrared waves and the microwave, has both advantages, compares with infrared waves, and millimeter wave more can adapt to complicated battlefield surroundings and abominable meteorological condition; Compare with microwave, the millimeter wave detection aimed at precision is higher.
The notion of monopulse antenna derives from the self-interference appearance, on conical scanning and order switched-beam system basis, grows up, and it can obtain target direction, luffing angle information and range information in single radar repetition interval.
Traditional pulse network adopts waveguiding structure more, and pulse network and antenna are separate, and structure is disperseed, and Installation and Debugging are loaded down with trivial details, and particularly at millimeter wave band, waveguide type selecting, processing, assembling all can be introduced than mistake, have a strong impact on properties of product.If can adopt the pulse feeding network of planar structure, then possibly overcome above-mentioned weak point.
Summary of the invention
The technical problem that the present invention will solve: to the existing defective of pulse network of traditional structure; A kind of dull and stereotyped slot array antenna pulse feeding network is proposed; Through adopting plane evil spirit T and feed waveguide end are handled especially, make it be well positioned to meet the dull and stereotyped slot array performance requirement of Ka wave band pulse.
The scheme of technical solution problem of the present invention: plane evil spirit T, power distributing network, slot antenna array are combined; Adopt multi-layer planar device weldering (gluing) to connect and form, compare advantages such as having section is low, compact conformation, the debugging test volume is little, efficient is high, cost is moderate with the reflecting surface monopulse antenna.
The dull and stereotyped slot array antenna pulse of Ka wave band of the present invention feeding network is made up of four layers of wave-guide cavity wave, and wherein ground floor is the radiating slot feed layer, and the second layer is a power distributing network, third and fourth two-layer common formation pulse network.Power distributing network adopts the feed waveguide broadside to open the form of R-joining, four quadrant waveguides feed that is coupled to the radiating slot feed layer; When adopting this feeding classification, feed waveguide and radiating guide are orthogonal configuration up and down, realize the control of feed power through regulating feed waveguide center slot inclination angle.The slit of this form, it requires the feed gaps center distance is 1/2 guide wavelength, least significant end slit centre-to-centre spacing terminal short circuit plate also is 1/2 guide wavelength.But in order to realize optimum orientation figure, require the radiation linear array equidistantly to arrange, such two submatrixs are arranged in a time-out, and feed waveguide will be interfered each other.The present invention adopts the coupling folded waveguide, increase a coupling slit apart from last 1/4 guide wavelength place, feed gaps center, the terminal energy of waveguide is coupled to down one deck, at following one deck, increases the coupling folded waveguide of about 1/4 guide wavelength.Like this, can satisfy the array radiating slot, can satisfy last feed R-joining again, well solve dull and stereotyped slot antenna feeding network location problem apart from short-circuit end 1/2 guide wavelength according to equidistantly arranging.The evil spirit T socket of four planes of said pulse network using is formed and the difference branch road; Through the coupling slit to the power distributing network feed; Forming four ports links to each other with external equipment; The step-like metallic membrane of employing inversion is allocated each plane evil spirit T in the evil spirit T of plane, is used for standing wave bandwidth and the amplitude-phase consistency bandwidth of broadening evil spirit T, realizes that better the broadband at networking is exported with poor.
The beneficial effect that the present invention and prior art contrast are had:
1. adopting inversion metal step diaphragm that plane evil spirit T is allocated, is to the innovation of plane evil spirit T dispensing mode, compare with traditional dispensing mode, and standing-wave ratio bandwidth and the amplitude-phase consistency bandwidth of effective broadening evil spirit T, export with difference in the broadband at realization networking.
2. adopt the form of plane evil spirit T socket to realize the pulse network; Reduced the section height of existing pulse network significantly; Can make the one machine-shaping in a flat board of whole pulse network, have that volume is little, section is low, in light weight, characteristics that machining accuracy is high, stable and reliable for performance.This pulse network is not only applicable to dull and stereotyped slit battle array, is applicable to the monopulse antenna of other systems such as reflecting surface yet.
3. at the terminal coupling folded waveguide that increases of feed waveguide, made things convenient for dull and stereotyped slot array antenna submatrix to arrange.The extensive use gradually of dull and stereotyped slot array, in order to satisfy beamwidth of antenna requirement, antenna array generally requires to divide several submatrixs; Cause the terminal interference each other of feed waveguide between submatrix; The present invention adopts the scheme that increases the coupling folded waveguide, is not increasing under the difficulty of processing condition of whole system, causes the problem of interfering each other between feed waveguide for the terminal short-circuit end of solution feed waveguide is long; A kind of new method is provided, increases a kind of selection for optimizing the submatrix arrangement mode.
Description of drawings
Fig. 1 is the structural front view of the dull and stereotyped slot array antenna of Ka wave band of the embodiment of the invention.
Fig. 2 is the structure side view of the dull and stereotyped slot array antenna pulse of the Ka wave band feeding network of the embodiment of the invention.
Fig. 3 is the structural front view of the dull and stereotyped slot array antenna pulse of the Ka wave band feeding network of the embodiment of the invention.
Fig. 4 is the structural representation of the terminal coupling of the feed waveguide folded waveguide of the embodiment of the invention.
Fig. 5 is the structural front view of the pulse network of the embodiment of the invention.
Fig. 6 is the magic T of the embodiment of the invention and the structural representation of being inverted step-like metallic membrane.
Fig. 7 is the voltage standing wave ratio analogous diagram of four mouths of the magic T of the embodiment of the invention.
Fig. 8 be the embodiment of the invention magic T mouthful divide oral instructions to fail curve phase place analogous diagram with difference to two merits.
Fig. 9 be the embodiment of the invention magic T mouthful divide oral instructions to fail the profile amplitude analogous diagram with difference to two merits.
Embodiment
Present embodiment is dull and stereotyped slot array antenna of Ka wave band and pulse feeding network thereof.With reference to Fig. 1, in order to realize the pulse function, entire antenna radiating slot feed layer 1 is divided into 4 quadrants 11,12,13 and 14; Each quadrant can be further divided into several submatrixs, in the present embodiment, for the simplification problem; Give top priority to what is the most important, each quadrant only keeps a submatrix.The radiating element of antenna is a waveguide broadside longitudinal joint 15, equidistantly is arranged on the radiating slot feed waveguide 16 according to 1/2 guide wavelength.
With reference to Fig. 2, the dull and stereotyped slot array antenna pulse of Ka wave band feeding network is said from structure, form by four layers of wave-guide cavity wave, and be radiating slot feed layer 1 topmost, then be power division layer 2, bottom two-layer common formation pulse network 3,4.
With reference to Fig. 3, the pulse feeding network need be realized two functions: power division and and difference beam formation.Power distributing network 2 adopts feed waveguide 21,22,23 and 24 broadsides to open the mode of R-joining, and it is 1/2 guide wavelength that this mode requires the feed gaps center distance, and least significant end slit 213 centre-to-centre spacing terminal short circuit plates 218 also are 1/2 guide wavelengths.
With reference to Fig. 1 and Fig. 3, in order to realize optimum orientation figure, require the radiation linear array equidistantly to arrange, such two submatrixs are arranged in a time-out, and the feed waveguide of submatrix adjacent 219 will be interfered each other.With reference to Fig. 4; Microwave energy 217 feed-ins from the feed waveguide input port, the present invention is coupled to down one deck increase a coupling slit 214 apart from last 1/4 guide wavelength place, feed gaps 212 centers with the terminal energy of waveguide; At following one deck; Increase the coupling folded waveguide 215 of about 1/4 guide wavelength, be equivalent to short circuit face is moved on to this Waveguide end face 216, can satisfy the array radiating slot like this according to equidistantly arranging; Can satisfy last feed R-joining again apart from short-circuit end 1/2 guide wavelength, well solve dull and stereotyped slot antenna feeding network location problem.
With reference to Fig. 5, four planes of pulse network using evil spirit T is respectively that the connected mode of 31,32,33 and 34, four plane evil spirit T is socket, realizes and difference signal formation.Four planes evil spirit T respectively have a coupling slit, respectively are 317,318,337 and 338, through these coupling slits to the power distributing network feed.The pulse network forms four ports and links to each other with external equipment, one of them and mouthful (port2), and two difference mouths (port1, port3), a mouth (port4) connects absorbing load in addition.
With reference to Fig. 6, the present invention is provided with in plane evil spirit T and is inverted step-like metallic membrane 316 and allocates, and standing wave bandwidth and amplitude-phase consistency bandwidth that like this can broadening evil spirit T better realize the sum-difference network performance.The magic T in plane has 311,312, one in two power division mouths and mouthful 313, one difference mouthful 314, two the middle open waveguide broadside of power division mouths transverse joints 315, and the energy in lower floor's waveguide is coupled into the upper strata waveguide.
The simulation result of evil spirit T is with reference to Fig. 7,8 and 9.In the bandwidth of Ka wave band 10%, the voltage standing wave ratio of He Kou and two power division mouths is less than 1.1, and difference is young in 1.22; With the amplitude of mouth to two a power division mouth be in theory-3dB, phase place is homophase in theory, changes in the simulation result amplitude bandwidth less than ± 0.1dB, and phase error is less than ± 0.5 °; Difference mouthful to the amplitude of two power division mouths also is-3dB in theory, and phase place differs 180 ° in theory, changes in the simulation result amplitude bandwidth less than ± 0.1dB, and phase error is less than ± 0.5 °.
Claims (3)
1.Ka the dull and stereotyped slot array antenna pulse of wave band feeding network; Form by four layers of wave-guide cavity wave; Wherein ground floor is radiating slot feed layer (1), and the second layer is power distributing network (2), the common formation of third and fourth layer pulse network (3,4); It is characterized in that: said radiating slot feed layer (1) adopts waveguide broadside longitudinal joint to carry out radiation, and waveguide is carried out feed to its radiating slot; Power distributing network (2) adopts feed waveguide (21,22,23,24) broadside to open the form of R-joining (211,212,213), and feed is coupled to four quadrant waveguides of radiating slot feed layer (11,12,13,14); Feed waveguide and radiating slot feed waveguide are orthogonal configuration up and down, realize the control of feed power through regulating feed waveguide center slot inclination angle; Evil spirit T (31,32,33, the 34) socket of four planes of said pulse network using is formed and the difference branch road; Form four ports (port1, port2, port3; Port4) link to each other with external equipment, through the coupling slit (317,318,337,338) to power distributing network (2) feed.
2. the dull and stereotyped slot array antenna pulse of Ka wave band according to claim 1 feeding network; It is characterized in that: the center distance of the feed gaps on the feed waveguide is 1/2 guide wavelength; The centre-to-centre spacing terminal short circuit plate (218) in least significant end slit (213) also is 1/2 guide wavelength; Increasing a coupling slit (214) apart from 1/4 guide wavelength place, last feed gaps (212) center; The terminal energy of waveguide is coupled to down one deck, and the coupling folded waveguide (215) at one 1/4 guide wavelength of following one deck increase can satisfy the array radiating slot like this according to equidistantly arranging; Satisfy last feed R-joining again apart from short-circuit end 1/2 guide wavelength, solved the mutual interference problem of dull and stereotyped slot antenna feed waveguide.
3. the dull and stereotyped slot array antenna pulse of Ka wave band according to claim 1 feeding network; It is characterized in that: said plane evil spirit T (31) has two power division mouths (311,312); One and mouth (313); A difference mouth (314), the energy of difference mouthful (314) place waveguide is by in the middle of the two power division mouths (311,312) crack (315) the coupling inputs of cracking.In the evil spirit T of plane, the step-like metallic membrane of inversion (316) is set and carries out the allotment of voltage standing wave ratio, be used to improve standing wave bandwidth and the amplitude-phase consistency bandwidth of magic T, realize the broadband and difference output at networking.
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102931462A (en) * | 2012-11-20 | 2013-02-13 | 北京遥测技术研究所 | High-precision broadband four-feed network |
| CN103700938A (en) * | 2013-12-12 | 2014-04-02 | 浙江大学 | Full metal circular polarization and liner polarization 8-shaped wave beam antenna of millimeter wave |
| CN104569967A (en) * | 2015-01-28 | 2015-04-29 | 芜湖航飞科技股份有限公司 | 8 mm one-dimensional phase scanning system cruise radar |
| CN106229637A (en) * | 2016-08-12 | 2016-12-14 | 南京肯微弗通信技术有限公司 | Panel antenna array and the plate aerial of band polarization modulation |
| CN106356642A (en) * | 2016-10-27 | 2017-01-25 | 成都雷电微力科技有限公司 | Medium waveguide crack array antenna with series feed of metal hollow waveguide |
| CN106450635A (en) * | 2016-12-08 | 2017-02-22 | 江苏贝孚德通讯科技股份有限公司 | Integrated microwave wave guide coupler |
| CN107544554A (en) * | 2017-07-20 | 2018-01-05 | 上海无线电设备研究所 | A kind of combined antenna electric axis overlaps simple method of adjustment |
| CN109546360A (en) * | 2018-12-17 | 2019-03-29 | 西安电子工程研究所 | The active phase of Ku wave band based on ridge waveguide gap array sweeps antenna |
| CN109687104A (en) * | 2018-12-20 | 2019-04-26 | 中国科学院上海微系统与信息技术研究所 | Narrow pitch angle list slot antenna of a kind of width horizontal angle and preparation method thereof |
| CN110085980A (en) * | 2019-05-10 | 2019-08-02 | 电子科技大学 | Low section broadband feed antenna for the pulse reflector antenna that feedovers |
| CN110165426A (en) * | 2019-04-01 | 2019-08-23 | 贵州航天电子科技有限公司 | A kind of X-band broadband band single pulse flat plate slot |
| CN111585050A (en) * | 2020-05-18 | 2020-08-25 | 宁波大学 | A broadband flat panel array antenna |
| CN114709628A (en) * | 2022-04-01 | 2022-07-05 | 盛纬伦(深圳)通信技术有限公司 | W-band array antenna based on gap waveguide technology |
| CN116565523A (en) * | 2022-01-29 | 2023-08-08 | 北京华航无线电测量研究所 | A Broadband Low Profile Common Aperture Multiphase Central Array Antenna |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102931462A (en) * | 2012-11-20 | 2013-02-13 | 北京遥测技术研究所 | High-precision broadband four-feed network |
| CN103700938A (en) * | 2013-12-12 | 2014-04-02 | 浙江大学 | Full metal circular polarization and liner polarization 8-shaped wave beam antenna of millimeter wave |
| CN104569967A (en) * | 2015-01-28 | 2015-04-29 | 芜湖航飞科技股份有限公司 | 8 mm one-dimensional phase scanning system cruise radar |
| CN106229637A (en) * | 2016-08-12 | 2016-12-14 | 南京肯微弗通信技术有限公司 | Panel antenna array and the plate aerial of band polarization modulation |
| CN106356642A (en) * | 2016-10-27 | 2017-01-25 | 成都雷电微力科技有限公司 | Medium waveguide crack array antenna with series feed of metal hollow waveguide |
| CN106450635B (en) * | 2016-12-08 | 2021-10-01 | 江苏贝孚德通讯科技股份有限公司 | Integrated microwave waveguide coupler |
| CN106450635A (en) * | 2016-12-08 | 2017-02-22 | 江苏贝孚德通讯科技股份有限公司 | Integrated microwave wave guide coupler |
| CN107544554A (en) * | 2017-07-20 | 2018-01-05 | 上海无线电设备研究所 | A kind of combined antenna electric axis overlaps simple method of adjustment |
| CN109546360A (en) * | 2018-12-17 | 2019-03-29 | 西安电子工程研究所 | The active phase of Ku wave band based on ridge waveguide gap array sweeps antenna |
| CN109687104A (en) * | 2018-12-20 | 2019-04-26 | 中国科学院上海微系统与信息技术研究所 | Narrow pitch angle list slot antenna of a kind of width horizontal angle and preparation method thereof |
| CN109687104B (en) * | 2018-12-20 | 2024-03-01 | 中国科学院上海微系统与信息技术研究所 | Wide-horizontal angle and narrow-pitch angle single-slit antenna and manufacturing method thereof |
| CN110165426A (en) * | 2019-04-01 | 2019-08-23 | 贵州航天电子科技有限公司 | A kind of X-band broadband band single pulse flat plate slot |
| CN110085980A (en) * | 2019-05-10 | 2019-08-02 | 电子科技大学 | Low section broadband feed antenna for the pulse reflector antenna that feedovers |
| CN111585050A (en) * | 2020-05-18 | 2020-08-25 | 宁波大学 | A broadband flat panel array antenna |
| CN116565523A (en) * | 2022-01-29 | 2023-08-08 | 北京华航无线电测量研究所 | A Broadband Low Profile Common Aperture Multiphase Central Array Antenna |
| CN114709628A (en) * | 2022-04-01 | 2022-07-05 | 盛纬伦(深圳)通信技术有限公司 | W-band array antenna based on gap waveguide technology |
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Application publication date: 20120425 |