Summary
International Symposium on Antennas and Propagation
2010
Session Number:2WC1
Session:
Number:2WC1-2
Efficient Modeling of a Small Reverberation Chamber Using FDTD Method
SoonGyu Yi, Ki-Bok Kong, Jung-Hwan Choi, Jung-Ick Moon, Seong-Ook Park,
pp.-
Publication Date:2010/11/23
Online ISSN:2188-5079
Summary:
Reverberation chamber (RC) is a large cavity surrounded by metal walls which can be used to measure the performance of the antenna. Without the stirrer, the RC itself is only a resonator with high Q and it will create standing waves inside the chamber. Therefore one or more mode stirrers are required inside the chamber to eliminate these standing waves and to measure the antenna parameters using the RC. By rotating the mode stirrer, boundary conditions inside the RC will change which leads to the creation of different modes inside the chamber and eventually the channel inside the chamber will have Rayleigh distribution with zero mean and equal variance. Platform stirring can also be used to increase the statistics of the received power [1]. Recently, the finite difference time domain (FDTD) method was presented in simulating and modeling the RC [2]-[4]. In this paper, FDTD method is used to model the RC. Not only the rotation of the stirrer but also the platform stirring is modeled and simulated to check the validation of FDTD method. Rayleigh distribution for any of the electric field components will ensure the normal distribution of the electric field [5]. Received power samples of the receiving antenna for FDTD simulation were compared to both actual measurements and the CDF of Rayleigh distribution.