Total radiated power measurements of WiFi devices using a compact reverberation chamber

Abstract

A compact reverberation chamber is herein considered for the TRP (Total Radiated Power) measurements of WiFi devices. An immediate difficulty when testing WiFi devices is the lack of a standard emulator which allows robust control of the emitted signal for power measurement purposes. The average power delivered by a WiFi device depends upon the data rate which itself can also vary during time. Multipath environments also influence the data rate and the signal delivered by the device. The procedure proposed herein is developed in order to ensure repeatable measurements. The mechanical stirring of the reverberation chamber is optimized to enable fast measurements.