Signal filter for communication

Abstract

A communication signal filter disclosed by the present invention comprises a signal filter body, the upper end of the signal filter body is provided with a box cover, the upper end of the box cover is provided with a plurality of tuning rods, and the box cover is connected with the signal filter body through a plurality of connecting mechanisms. Four supporting legs are mounted at the bottom of the signal filter body, a mounting plate is fixedly connected among the four supporting legs, a heat exchange groove is formed in the bottom of the box cover, a plurality of U-shaped pipes are mounted in the heat exchange groove, and every two adjacent U-shaped pipes are connected through a hose. According to the invention, the box cover can be conveniently installed, the operation is simple and fast, meanwhile, effective and efficient heat dissipation can be carried out on the signal filter body, the U-shaped pipes can be conveniently installed and disassembled, the installation and disassembly are convenient, the installation and disassembly are convenient, the installation and disassembly are convenient, and the installation and disassembly are convenient. And an elastic sliding sheet is arranged, so that stable sliding in the T-shaped groove can be ensured, and the fixed block and the U-shaped pipe can be limited.

Description

technical field [0001] The present invention relates to the technical field of filters, in particular to a signal filter for communication. Background technique [0002] The signal filter is used to filter out the useful signal from the input signal to filter out the unwanted signal and noise interference. The principle is to use the amplitude-frequency characteristics of the circuit, set the range of the passband to the range of the useful signal, and filter out other spectral components. [0003] The filters used in traditional applications are generally realized by metal coaxial cavities. Due to the loss of their own materials, the metal coaxial cavity cannot obtain a high quality factor (Q value) under the circumstance of limited cavity size, resulting in various problems. All performance indicators are limited, and even if a certain surface treatment is taken on the metal surface, satisfactory results cannot be obtained. [0004] The prior art discloses a communicatio...

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Problems solved by technology

[0005] However, the disadvantage of the above-mentioned patent is that the cover plate is made of aluminum material, and the surface of the cover plate is provided with copper material by coating, which effectively dissipates the heat inside the cavity through the aluminum cover plate. The heat dissipation method is not effective enough and needs to be improved

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