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Short circuit tube temperature compensation rectangular waveguide resonant cavity

A rectangular waveguide and temperature compensation technology, applied in resonators, waveguide-type devices, circuits, etc., can solve the problems that the influence of temperature on the resonant frequency of the resonator cannot be greatly reduced, and the equipment is complicated, and achieves simple structure and applicable frequency range. wide effect

Inactive Publication Date: 2013-02-13
SOUTHEAST UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main problems of these methods are: the required equipment is complicated, or the magnetic properties of the cavity material limit the application occasions, or additional temperature compensation control devices are required, or the influence of temperature on the resonant frequency of the resonant cavity cannot be greatly reduced

Method used

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  • Short circuit tube temperature compensation rectangular waveguide resonant cavity

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Embodiment Construction

[0012] The present invention will be further described below in conjunction with drawings and embodiments.

[0013] The technical solution adopted in the present invention is: the temperature compensation rectangular waveguide resonator of the short-circuit barrel includes a metal cavity, a short-circuit barrel, a support body and one or several input-output coupling devices. The shape of the metal cavity can be a cuboid, or a cube with equal narrow and wide sides. The short-circuit barrel is located in the metal cavity. The material of the short-circuit barrel is conductive metal, and metal can also be plated on the surface of non-metallic materials. The shape of the short-circuit barrel is a cuboid. The bottom surface of the short-circuit barrel is parallel to the top surface of the metal cavity. The shape of the bottom surface is rectangular, and its size is slightly smaller than the size of the top wall of the metal cavity, so as to maintain a good short-circuit effect and...

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Abstract

The invention relates to a short circuit tube temperature compensation rectangular waveguide resonant cavity, belonging to waveguide resonant cavity and aiming to obviously decreasing influence of temperature on resonant frequency of resonant cavity. The resonant cavity is composed of a metal cavity (1), a short circuit tube (2), a supporting body (3), and one or a plurality of input-output coupling devices (4); the short circuit tube (2) is arranged in the metal cavity (1) and of a cuboid shape; the supporting body (3) is arranged between the first top cavity wall (6) of the metal cavity (1) and the bottom (5) of the short circuit tube (2); the short circuit tube (2), the second top cavity wall (9) of the metal cavity (1), and the wide side cavity wall (8) and the narrow side cavity wall (10) of the metal cavity form a resonant space (11) of electromagnetic wave; and the input-output coupling devices (4) are arranged on part of top cavity wall (9), or wide side cavity wall (8), or narrow side cavity wall (10) of the metal cavity (1), the part in the resonant space (11).

Description

technical field [0001] The patent of the present invention relates to a waveguide resonant cavity, in particular to a short-circuit barrel temperature-compensated rectangular waveguide resonant cavity capable of reducing the temperature drift of the resonance frequency. Background technique [0002] The resonant frequency of a waveguide resonant cavity depends on the shape, size, cavity filling medium and resonant mode of the resonant cavity. When the temperature changes, the size of the resonant cavity will also change due to thermal expansion and contraction of the wall material of the resonant cavity, which will cause a change in the resonant frequency of the resonant cavity, which will adversely affect the performance of the resonant cavity. At present, the known methods to reduce the influence of temperature changes on the resonant frequency of the resonator are mainly to adopt constant temperature measures, or to use cavity materials with small thermal expansion coeffi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01P7/06H01P1/30
Inventor 赵洪新殷晓星孙忠良
Owner SOUTHEAST UNIV
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