Top X Technology Co., Ltd
Email: rfproducts1@ctrfantennas.com
C&T RF Antennas Inc
Microwave Anechoic Chamber
Source:Original | Author:C&T RF Antennas Inc | Publish time: 2018-01-14 | 2469 Views | Share:


Microwave Anechoic Chamber
When the electromagnetic waves incident on the wall, ceiling, the ground, the vast majority of electromagnetic waves are absorbed, while transmission, reflection is very small. The microwave also has some of the characteristics of light, with the meaning of optical darkroom, it named microwave anechoic chamber. SA and metal shield for the formation of a special room, which provides man-made open "free space" conditions in the darkroom to do antenna, radar and other wireless communications products and electronic products testing can be protected from clutter and improve the test equipment under test Accuracy and efficiency, with the increasing development of electronic technology, microwave anechoic chamber is more people to understand and apply.

 

Microwave anechoic chamber is to use a wave-absorbing material to create a closed space, so that you can create a pure electromagnetic environment in the darkroom, microwave anechoic material can be all-absorbing materials, the main material is polyurethane absorbing sponge SA (high-frequency use) In addition, the test of electromagnetic compatibility of electronic products, the frequency is too low will use ferrite absorbing materials.

 

The main working principle of microwave anechoic chamber is based on the electromagnetic wave propagating from low magnetic guide to high magnetic guide in the medium. The electromagnetic wave is guided by the high magnetic permeability absorbing the material. Through the resonance, a large amount of radiation energy of the electromagnetic wave is absorbed, and then the electromagnetic wave The energy into heat.

 

The scope of application:

Microwave anechoic chambers are mainly used for radiated radio disturbance (EMI) and radiation sensitivity (EMS) measurements. The size of the anechoic chamber and the selection of RF absorbers are mainly determined by the dimensions and test requirements of the EUT.

 

Key Features

Frequency range: 30MHz ~ 18GHz Absorbing material reflection loss: 30MHz ~ 18GHz ≥ 15dB (Absorbing material using the composite absorbing material, that is, conical carbon sponge absorbing material affixed to the ferrite).