Dielectric waveguide filter

A dielectric waveguide and filter technology is applied in the field of dielectric waveguide filters, which can solve the problems of unfavorable filter structure diversification and adaptability, unfavorable installation, disassembly and transportation, and restricting the form of filter cavity. Lightweight, low cost effect

Active Publication Date: 2014-03-05
WUHAN FINGU ELECTRONICS TECH
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Problems solved by technology

Although the filter designed in this way has a high Q value, its volume and weight are large, which is not conducive to installation, disassembly and transportation; and due to the high price of precious metals, the cost of waveguide filters is also high
[0003] In addition, the tuning structure of the dielectric waveguide fi

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Embodiment Construction

[0026] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0027] A dielectric waveguide filter as shown in the figure, the dielectric waveguide filter includes a plurality of interconnected dielectric single cavities 1, the dielectric single cavities 1 can be connected in series or in parallel It can also be connected in a combination of series and parallel; the dielectric single chamber 1 is a solid cavity made of dielectric material, and the surface of the solid cavity is provided with an electromagnetic shielding layer.

[0028] In this embodiment, the dielectric constant of the air and the medium is different, and the cavity of the traditional metal cavity waveguide filter, that is, the air part, is filled with a dielectric material, and an electromagnetic shielding layer is provided on the surface of the dielectric material for electromagnetic shielding. At the same time, the dielectric ...

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Abstract

The invention discloses a dielectric waveguide filter. The dielectric waveguide filter comprises a plurality of dielectric single cavities which are connected with each other, wherein the dielectric single cavities are solid cavities made of the dielectric material; electromagnetic shielding layers are arranged on the surfaces of the solid cavities. According to the dielectric waveguide filter disclosed by the invention, cavities, namely air parts, of a conventional metal cavity waveguide filter are filled with the dielectric material according to different dielectric constants of the air and medium, and the electromagnetic shielding layer is arranged on the surface of the dielectric material to carry out electromagnetic shielding; meanwhile, the dielectric material is used for supporting, so that the designed dielectric waveguide filter has advantages of being small in size, light in weight, low in cost, having an environment-friendly effect and the like, and can satisfy development trends such as small size, light weight, low cost, high performance and environmental protection of products such as future filters, duplexers and multiplexers.

Description

technical field [0001] The invention relates to the technical field of electrical components used in the communication industry, in particular to a dielectric waveguide filter. Background technique [0002] In communication systems, waveguide filters are usually used to filter out interference signals or clutter signals within a specific frequency range. The traditional waveguide filter structure is a metal cavity structure, that is, precious materials such as metal or metal alloys (such as: aluminum, magnesium alloy, etc.) are used to hollow out the middle or part, and the metal materials mainly play the role of electromagnetic shielding and structural support. Although the filter designed in this way has a high Q value, its volume and weight are large, which is not conducive to installation, disassembly and transportation; and due to the high price of precious metals, the cost of the waveguide filter is also high. [0003] In addition, the tuning structure of the dielectr...

Claims

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Application Information

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IPC IPC(8): H01P1/20
Inventor 许建军
Owner WUHAN FINGU ELECTRONICS TECH
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