Contactless Antenna Radiation Efficiency Measurement Within Reverberation Chambers: Sensitivity Improvement

This paper discusses the sensitivity improvement of a contactless antenna radiation efficiency measurement method within reverberation chambers (RCs). The method does not need to connect the antenna under test to an analyzer through cables, which are known to disturb antenna impedance and radiation characteristics when placed in the reactive field zone of electrically small antennas. The sensitivity improvement is achieved through the use of multiple identical AUTs located within the RC in order to enhance the quality factor variation introduced by the modification of the AUT load impedance.