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Self-temperature compensating rectangular waveguide resonant cavity

A rectangular waveguide and temperature compensation technology, applied in resonators, waveguide-type devices, electrical components, 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. Wide range, reducing the effect of variation

Inactive Publication Date: 2012-07-04
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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Embodiment Construction

[0008] The present invention will be further described below in conjunction with drawings and embodiments.

[0009] The technical solution adopted in the present invention is: the self-temperature compensation rectangular waveguide resonant cavity includes a metal cavity, a short circuit board, a support body connecting the bottom surface of the rectangular cavity and the short circuit board, and one or several input and 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 board is located in the metal cavity. The material of the short circuit board is conductive metal, and metal can also be plated on the surface of non-metallic materials. The short circuit board is connected with a top cavity wall of the metal cavity through the support body. The top surface is similar, and its size is slightly smaller than the size of the top cavity wall. In order to maintain good electromagnetic coupling betwee...

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Abstract

The invention discloses a self-temperature compensating rectangular waveguide resonant cavity, which relates to the waveguide resonant cavity and can remarkably decrease the influence of temperature on the resonance frequency of the resonant cavity. A short circuit board (2) is positioned in a metal cavity (1). The thermal expansion coefficient of a support body (3) is greater than that of the metal cavity (1). The short circuit board (2) is connected with the top cavity wall (5) of the metal cavity (1) through the support body (3) and is of a shape similar to that of the top cavity wall (5) and in a size slightly smaller than that of the top cavity wall (5). The short circuit board (2), and another top cavity wall (8), the narrow cavity wall (6) and the wide cavity wall (7) of the metal cavity (1) form a resonant space (9) of electromagnetic waves. An input and output coupling device (4) is positioned on the top cavity wall (8) or the narrow cavity wall (6) or the wide cavity wall (7) of the metal cavity (1) in the resonant space (9).

Description

technical field [0001] The patent of the present invention relates to a waveguide resonator, especially a self-temperature-compensated rectangular waveguide resonator capable of reducing temperature drift of 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 use temperature compensation devices, or use cavity materials with small thermal expansion coefficien...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01P7/08
Inventor 殷晓星赵洪新孙忠良
Owner SOUTHEAST UNIV
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