Millimeter wave band-used low-loss high-vacuum sealing heat-insulation transfer window

Abstract

The invention relates to a millimeter wave band-used low-loss high-vacuum sealing heat-insulation transfer window, which comprises a multilayer dielectric window and a sealing upper flange and a sealing lower flange arranged at the upper side and the lower side of a multilayer dielectric window edge respectively, wherein the multilayer dielectric window comprises a first tetrafluoride layer, a quartz layer, a second tetrafluoride layer and a heat insulation layer. Transmission reflection loss of electromagnetic wave signals can be effectively reduced, the problem of a large amount of interference fringes existing in the existing window can be solved, the vacuum sealing performance can be greatly enhanced, the problem that the use of the sealing wave-transmitting window of the traditional low-temperature receiver / superconducting receiver is limited can be solved, good heat insulation effects are achieved, and the heat radiation can be reduced effectively.

Description

technical field [0001] The invention relates to the technical field of microwave signal transmission window components, in particular to a low-loss, high-vacuum, heat-insulated transmission window for millimeter wave frequency bands. Background technique [0002] The sealing window is mainly used for the transmission of light and the transmission of microwave signals, and also has the ability of vacuum sealing. At present, the sealing window technology is mainly used in infrared detectors, cryogenic receivers, and superconducting receivers. [0003] In infrared applications, the sealing window is mainly made of sapphire material, which requires good light transmission and maintains a good vacuum degree. However, the dielectric constant of the sealing window is relatively large, which is usually not suitable for the transmission of microwave signals. [0004] For microwave transmission windows used in cryogenic receivers / superconducting receivers, there are three commonly ...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a low-loss high-vacuum sealed heat-insulated transmission window for the millimeter wave frequency band, which can not only effectively reduce the transmission reflection loss of electromagnetic wave signals, improve the problem of a large number of interference bands in the existing window, but also greatly improve the Vacuum sealing performance, solves the problem of limited use of sealed wave-transparent windows of traditional cryogenic receivers / superconducting receivers, and has good heat insulation effect, effectively reducing heat radiation

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