Filtering device for enabling multiple signals to enter darkroom in single line mode

Abstract

The embodiment of the invention provides a filtering device for enabling multiple signals to enter a darkroom in a single-line mode, and belongs to the technical field of filtering. The device comprises: a metal housing and a darkroom shield; the metal housing and the darkroom shield are enclosed to form a box body structure with a sealing cavity, and metal sand is packaged in the sealing cavity; the darkroom shield is used for accessing a single-core wire coated with a metal shielding layer and allowing the single-core wire with the stripped metal shielding layer to penetrate through the sealing cavity and then enter the darkroom, and the section of the metal shielding layer of the single-core wire is in contact with the darkroom shield; and interference signals are consumed through a conductive plane formed by the darkroom shield, the metal housing and the metal sand. According to the scheme, various useful signals on the single-core wire enter the anechoic chamber smoothly, other interference signals are prevented from entering the anechoic chamber, and the related requirement that various signals on the same line enter the anechoic chamber is met.

Description

technical field [0001] The invention relates to the technical field of filtering, in particular to a filtering device for multi-signal single-line entry into a darkroom. Background technique [0002] The anechoic chamber is of great significance in the field of measurement. In order to avoid the deviation of measurement results caused by external electromagnetic radiation, the equipment to be tested is placed in an anechoic chamber that shields external electromagnetic waves for testing, so that the equipment to be tested is not affected by the external electromagnetic environment during the test process. All test results are relative to the device under test itself. Therefore, in addition to the shielding performance of the anechoic chamber itself, in order to avoid the influence of the interference signals of the power supply and signal transmission of the equipment under test, and the interference signals of the communication signals on the test results, it is preferable ...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the embodiments of the present invention is to provide a filter device for multi-signal single line entering the dark room, to at least solve the problem that the prior art cannot satisfy the problem of multiple signals entering the dark room on the same line

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