Q-band high-power millimeter-wave band-stop frequency selective surface

A frequency-selective surface, high-power technology, used in waveguide-type devices, electrical components, circuits, etc., can solve the problems of complex structural design and small power capacity, and achieve higher power capacity, reduce the influence of grating lobes, and reduce polarization sensitivity. low sex effect

Inactive Publication Date: 2018-01-16
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Abstract
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Problems solved by technology

[0006] Aiming at the disadvantages of complex structure design and small power capacity of the frequency selective surface proposed in the background technology, the present invention proposes a Q-band high-power millimeter-wave band-stop type frequency selective surface

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  • Q-band high-power millimeter-wave band-stop frequency selective surface

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Embodiment Construction

[0032] The present invention will be described in further detail below in conjunction with accompanying drawing:

[0033] Refer to attached figure 1 , The band-stop type frequency selective surface designed by the present invention includes a bracket 1 , a fixed ring 2 , an installation retaining ring 3 , and a metal circular plate 4 .

[0034] Refer to attached figure 2 , the metal circular plate designed by the present invention is periodically distributed with m×n units; m is the period expansion number of units in the X-axis direction, and n is the period expansion number of units in the Y-axis direction. The distance between the centers of adjacent cells 5 is D, and the thickness of the cells is h.

[0035] Refer to attached image 3 , The unit 5 designed by the present invention includes a round hole 6 and four quarter shuttle-shaped cross holes 7 . The radius of the round hole is r, the angle corresponding to each arm of the shuttle-shaped cross hole is α, and the ...

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Abstract

The invention, which belongs to the technical field of the high-power millimeter-wave antenna engineering, discloses a Q-band high-power millimeter-wave band-stop frequency selective surface comprising a bracket, a fixed circular ring, a mounting baffle ring and a circular metal plate. The circular metal plate is arranged in a clamp groove formed by the fixed circular ring and the mounting bafflering and can rotate freely around the center; and units distributed periodically are arranged on the circular metal plate. The units consist of circular holes and shuttle crossed holes; and because the units are in a 90-degree rotating symmetric manner relative to the center, the structure has extremely low sensitivity. According to the invention, the two kinds of aperture structures arranged on the circular metal plate periodically are arranged compactly, so that the relative spaces between the units are reduced and thus the influence of the grating lobe is reduced; adjacent sides of the units are connected by arc segments, thereby reducing the local field intensity at the corner angle, improving the power capacity of the device, and meeting the requirement of high-power work; and the frequency selective surface has a simply designed structure and a good cooling performance.

Description

technical field [0001] The invention belongs to the technical field of high-power millimeter-wave antenna engineering, and in particular relates to a Q-band high-power millimeter-wave band-stop frequency selective surface. Background technique [0002] Frequency Selective Surfaces (FSS) are composed of periodically arranged metal patch units or periodically arranged opening units on a metal screen. The patch unit FSS transmits in the low frequency band, reflects in the high frequency band, and has low-pass filtering characteristics. Open cells are the opposite. FSS is a spatial filter that has a selective effect on the incident angle, polarization mode and frequency of electromagnetic waves. [0003] In recent years, with the development of high-power millimeter-wave technology, high-power millimeter-wave sources represented by gyrotrons have developed rapidly. The cyclotron traveling wave tube has the characteristics of wide operating frequency band, high output peak pow...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01P1/20
Inventor 吴泽威张婷王建勋王丽罗勇
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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