Low-sidelobe horn antennas of micro-strip excitation

A horn antenna and low side lobe technology, applied in antennas, waveguide horns, electrical components, etc., can solve the problems of long optimization steps, low space utilization, and many debugging factors, and achieve high designability and compact structure , strong practicality and competitiveness

Active Publication Date: 2010-02-10
XIAN INSTITUE OF SPACE RADIO TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] a. Large volume and low space utilization;
[0004] b. The structure is more complex and not easy to process;
[0005] c. There are many factors to be debugged in the design process, and the optimization step takes a long time

Method used

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  • Low-sidelobe horn antennas of micro-strip excitation
  • Low-sidelobe horn antennas of micro-strip excitation
  • Low-sidelobe horn antennas of micro-strip excitation

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Embodiment Construction

[0026] Below in conjunction with accompanying drawing and specific embodiment content of the present invention is described in further detail:

[0027] In this embodiment, the external dimensions of the low-side lobe horn antenna excited by the microstrip are: 243.5×367×404.4mm 3 .

[0028] Such as figure 1 Shown is the structure schematic diagram of the low sidelobe horn antenna of the present invention microstrip excitation, as figure 2 Shown is the low sidelobe horn antenna structural sectional view of microstrip excitation of the present invention, can find out that the low sidelobe horn antenna of microstrip excitation is made up of microstrip radiator 1, polarization bridge 2 and conical horn 3 by figure, The conical horn 3 is a coaxial multimode horn with longitudinal grooves, the smaller end of the conical horn 3 is connected to the grounding plate of the microstrip radiator 1, and the larger end of the port is two sleeves coaxial and connected through the Annulus ...

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Abstract

The invention relates to low-sidelobe horn antennas of micro-strip excitation, comprising a micro-strip radiator, a polarization electric bridge and a conical horn. The micro-strip radiator is adoptedto feed the horn, wherein the micro-strip radiator comprises a radiation sticker, a ground plate and a short-circuit metal post which is arranged between the radiation sticker and the ground plate and plays a supporting role. Two feed ports are arranged on the ground plate, and the polarization electric bridge is integrated on the back of the ground plate of the micro-strip radiator. The design realizes the integration of the horn antennas and a circular polarization feed source, and the structure of the whole horn antennas is compact, thereby effectively utilizing space. Meanwhile, a longitudinal groove is added at the caliber position of the conical horn for restraining the edge current of the horn, thereby restraining sidelobe and realizing the low sidelobe and low cross polarization.The invention has simple and compact structure, easy processing and good electrical property and meets the rigorous demand of satellite to space.

Description

technical field [0001] The invention relates to the field of microwave communication, and relates to a low-sidelobe horn antenna, in particular to a microstrip-excited low-sidelobe horn antenna. Background technique [0002] In the field of microwave communication, the satellite L injection antenna (an antenna that works in the L frequency band and is used to transmit ephemeris information to the satellite about the satellite orbit and its precise position on the satellite orbit relative to time) works in a left-handed circular polarization, At the same time, in order to improve the anti-interference ability of the space-to-ground signal link, low or ultra-low sidelobes are required for the antenna. The traditional horn antenna adopts the traditional waveguide or coaxial line feed. To achieve circular polarization, a circular polarizer needs to be added. The L-band waveguide circular polarizer is about 300mm long, which occupies a relatively large volume. , does not meet th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q13/02H01Q13/08
Inventor 杨文丽吴春邦刘波郑士昆牛宝华
Owner XIAN INSTITUE OF SPACE RADIO TECH
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