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Trapezoidal waveguide slot array antenna unit

A technology of slot array antenna and trapezoidal wave, which is applied in the direction of slot antenna, antenna, antenna array, etc., can solve the problems of increasing the complexity of processing technology, the advantage of adding ridges is not obvious, etc., and achieve the improvement of working bandwidth, low side lobe, and radiation efficiency high effect

Inactive Publication Date: 2010-08-25
TIANJING UNIV OF TECH & EDUCATION
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AI Technical Summary

Problems solved by technology

Adding ridges can expand the passband of the waveguide, but when the working bandwidth of the antenna is much smaller than the passband of the waveguide itself, the advantages of adding ridges become less obvious, and the complexity of the processing process is increased

Method used

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  • Trapezoidal waveguide slot array antenna unit
  • Trapezoidal waveguide slot array antenna unit
  • Trapezoidal waveguide slot array antenna unit

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Embodiment Construction

[0016] FIG. 1 shows a trapezoidal waveguide slot array antenna unit used in a communication system, and FIG. 2 is a front view of FIG. 1 . It includes a waveguide 1 with a trapezoidal cross-section, and a radiation slot 2 is provided on the wide side of the waveguide, and the length of the slot is L 2 , the distance between the gaps is d, and the short-circuit boards 31 and 32 are respectively provided at both ends, and the distance between the short-circuit board 31 and the center of the nearest gap is L 1 , a coaxial feeder 4 is provided near the short circuit board 32, and the distance from the short circuit board 32 to the coaxial feed device 4 is L 5 , the distance between the coaxial feeder 4 and the center of the nearest gap is L 6 , there are adjustment screws 51 and 52 designed near the coaxial feeder 4, and the distance between the two screws is L 3 , the distance from the adjustment screw 52 to the coaxial feeder 4 is L 4 .

[0017] Figure 3 is a schematic diagr...

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Abstract

The invention relates to a trapezoidal waveguide slot array antenna unit used for a communication system, which comprises a trapezoidal-section metal waveguide, radiating slots, a short circuit board, coaxial feeder equipment and adjusting screws, wherein the included angle between the two sloping sides of the trapezoidal section is designed as 45 degrees, and the length of broad side is twice as the height; and the radiating slots are alternately arranged on two sides of the broad side of the wave guide to adjust the section size and the slot length, thereby forming a array antenna unit capable of working at different frequencies. The antenna unit has the advantages of high gain, low side lobe and the like in the traditional waveguide slot array antenna unit, and can improve the antenna bandwidth as the number of the slots increases. The invention is easy to process and manufacture.

Description

technical field [0001] The invention relates to an antenna used in a communication system, in particular to a trapezoidal section waveguide slot array antenna unit. Background technique [0002] With the rapid development of radar, precision guidance, remote sensing and radio communication industries, the problem of increasingly tight frequency resources has become more and more prominent. It is an urgent need in the communication field to develop various forms of antennas that work on higher frequency bands. Among the many microwave and millimeter wave antennas, the waveguide slot array antenna has the advantages of compact structure, good mechanical strength, low feeding loss, high radiation efficiency, large power capacity and high reliability, and has attracted much attention in recent years. The traditional waveguide slot array antenna is made of rectangular metal waveguide, but its disadvantage is that the bandwidth is limited by the number of radiation slots (M.Hamada...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q21/00H01Q13/10H01Q13/08
Inventor 郑宏兴成丹王利强冯立营刘颖孙程光马兴兵
Owner TIANJING UNIV OF TECH & EDUCATION
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