Composite anechoic chamber for optimal fusion of simulated space optics-electromagnetic shielding environment

Abstract

The invention discloses an optimized and fused simulation space optics-electromagnetic shielding environment composite darkroom which is of a six-face square framework structure. Extinction microwave absorbing wedges (5) are spread over the inner sides of four side walls and the position below a ceiling in a mounted mode through a joist-frame carrier method, namely, the inner side of a six-face square framework is provided with a grid frame carrier (6) composed of a main joist (9) and an auxiliary joist (2), microwave absorbing bases (4) are densely distributed on the grid frame carrier (6) in a light-proof and mounted mode, and the extinction microwave absorbing wedges (5) are installed on the microwave absorbing bases (4). All visible surfaces of the extinction microwave absorbing wedges (5) are provided with extinction coatings (12). The optimized and fused simulation space optics-electromagnetic shielding environment composite darkroom can be used for measuring various characteristic parameters of microwave / infrared double-module products at the same time, and the space optics environment simulation and the space electromagnetic shielding environment simulation can be fused completely, the extinction ratio in a working area is improved to more than 95 percent from 90 percent, the electromagnetic shielding effectiveness is high, and the shielding effectiveness of the darkroom electrical property to 2GHZ-18GHZ microwave signals is 90dB.

Description

technical field [0001] The invention relates to the technical field of infrared testing and microwave testing, and belongs to the IPC international patent classification G01C measurement testing or EO4H special-purpose buildings or similar structures in the technology of simulating space optical environment and microwave electromagnetic shielding environment devices, especially the simulation of optimization fusion Space optics-electromagnetic shielding environment compound darkroom. Background technique [0002] At present, many products to be tested have both infrared characteristics and microwave characteristics, and the darkroom simulating the space optical environment and the darkroom simulating the space electromagnetic shielding environment cannot be combined together, which makes it necessary to constantly change places when testing product characteristics. To be able to complete these tests, it is required to provide a darkroom that can simulate both the space optic...

AI Technical Summary

Problems solved by technology

One is that the oxygen index of polyurethane wave-absorbing wedges is generally below 30, and the flame-retardant performance is only B2. In some extreme cases, fire accidents are still easy to occur; When the high-power electromagnetic wave radiation is on the wedge, most of the electromagnetic wave energy is converted into heat, which makes the internal temperature of the polyurethane wedge rise and the absorber fails, and even a fire may occur in severe cases; the third is to mount it at a higher position in the darkroom Due to its own weight, the arrowhead at the tip of the polyurethane wave-absorbing wedge will bend and sag after a period of time, making the darkroom poor in appearance and performance in the darkroom

[0011] There are few published patent documents related to improved technologies

Images