Characterization of Mobile Terminals in Rayleigh Fading by Using Reverberation Chamber

This paper gives an overview of the different measurement procedures that have been developed the last five years for characterizing small antennas and complete wireless terminals that are intended for use in environments with Rayleigh fading. The measurements make use of a reverberation chamber which in principle is a resonant cavity, and they include measurements of the classical radiation efficiency of small antennas (due to mismatch and ohmic losses), the "gain" when using diversity antennas, the maximum available capacity of a MIMO antenna system, as well as radiated power, receiver sensitivity (by measuring bit error rate) and implemented diversity gain of actual terminals. The radiation efficiency and radiated power were presented at previous ICECom conference, so the main attention will be given to the later developed receiver sensitivity and diversity procedures