PROJECT TITLE :

Efficient and Accurate Measurement of Absorption Cross Section of a Lossy Object in Reverberation Chamber Using Two One-Antenna Methods

ABSTRACT:

The averaged absorption cross section of a lossy object can be measured in an exceedingly reverberation chamber (RC). Conventionally, the measurement is conducted in the frequency domain and it requires two antennas with known potency. During this paper, the 2 one-antenna ways are presented—one is in the frequency domain and the opposite is during the time domain. Within the frequency domain, by using the enhanced backscatter impact, the measurement setup is greatly simplified and solely one antenna with known efficiency is required. Within the time domain, the measurement will be conducted rapidly and accurately using simply one antenna and also the source stir technique by considering the robustness of the chamber decay time; moreover, the RC will get replaced by a suitable electrically large conducting cavity, which can greatly scale back the hardware requirement. It is found that the time-domain approach is superior to the frequency-domain approach in several aspects. The new measurement strategies are efficient and correct, whereas the system requirements and setup are easier than the traditional ones.