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Wide band single pulse flat plate slot array antenna

A technology of slot array antenna and slot antenna, which is applied in the direction of slot antenna, antenna, antenna array, etc., can solve the problems of insufficient efficiency of single-pulse planar waveguide slot antenna, and achieve the effects of simple structure, reduced volume, and increased isolation

Active Publication Date: 2013-11-27
BEIJING RES INST OF TELEMETRY +1
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Problems solved by technology

[0003] The technical problem of the present invention is: to overcome the deficiencies of the prior art, to provide a wide-band single-pulse flat panel slot array antenna, which realizes wide-band single-pulse The pulsed slab waveguide slot antenna solves the problem of insufficient efficiency of the commonly used single pulse slab waveguide slot antenna

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  • Wide band single pulse flat plate slot array antenna
  • Wide band single pulse flat plate slot array antenna
  • Wide band single pulse flat plate slot array antenna

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Embodiment Construction

[0032] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0033] Such as figure 1 , 2 , 3, 4, 5, 6, 7, 8, and 9, a broadband monopulse planar slot array antenna of the present invention includes 4 broadband low-profile planar slot antenna subarrays 11 and 1 monopulse waveguide and difference device 71; each broadband low-profile panel slot antenna subarray 11 includes a broadband low-profile panel slot antenna unit 12 and a waveguide feeding network 6; the broadband low-profile panel slot antenna unit 12 includes a radiation square cavity 1, a radiation Slit 2, excitation waveguide cavity 3, excitation slit 4 and feed waveguide 5; single pulse waveguide and difference device 71 is composed of 3 planar magic T7 and 1 equal arm length and equal power dividing H-T waveguide power divider, adopting planar structure, The four output ports of the monopulse waveguide and difference unit 71 are re...

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Abstract

The invention discloses a wide band single pulse flat plate slot array antenna which comprises four wide band low profile flat plate slot antenna sub-arrays and a single pulse waveguide comparator. Each wide band low profile flat plate slot antenna sub-array further comprises a wide band low profile flat plate slot antenna unit and a waveguide feed network, and each wide band low profile flat plate slot antenna unit further comprises a square radiating cavity, radiating slots, a stimulation waveguide cavity, a stimulation slot and a feed waveguide. Each waveguide feed network is formed by a plurality of equal-arm-length equal-power-division and equal-arm-length unequal-power-division waveguide H-T powder dividers in a cascading mode, the single pulse waveguide comparator is formed by three plane magic Ts and an equal-arm-length equal-power-division waveguide H-T power divider, output openings of the single pulse waveguide comparator are connected with the wide band low profile flat plate slot antenna sub-arrays, and a sum beam, an azimuth difference and a pitching difference beam are formed at three input ports. Compared with a traditional single pulse waveguide slot antenna, the wide band single pulse flat plate slot array antenna has the wider band and is higher in efficiency, easier to design and easier to manufacture.

Description

technical field [0001] The invention relates to a wide-band monopulse flat-panel slot array antenna, which belongs to the technical field of flat-panel slot antennas. Background technique [0002] Monopulse radar is widely used in the world today. Compared with other radar modes such as continuous wave radar, pulse mode can obtain higher measurement accuracy. Early monopulse antennas mostly use Cassegrain dual-reflector antennas. The front and rear diameters of the antenna are long, the moment of inertia is large, and the sub-reflector will affect the efficiency of the antenna. In addition, the parasitic polarization caused by the parabolic reflection of the Cassegrain dual-reflector antenna will also affect the positioning accuracy of the radar. The monopulse waveguide slot array antenna is a commonly used monopulse antenna at present. The monopulse waveguide slot array antenna adopts the form of a standing wave array. Once the frequency deviates from the resonance frequenc...

Claims

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Application Information

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IPC IPC(8): H01Q13/10H01Q21/00H01Q23/00
Inventor 史永康孟明霞丁克乾
Owner BEIJING RES INST OF TELEMETRY
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