Measurement methods for power requirements of high performance UHF RFID tags

The sensitivity parameter is one of the most important parameters characterizing UHF RFID tags. This paper presents methods for measuring this parameter. It focuses on the use of non-expensive laboratory equipment. Nevertheless, the proposed methods provide accurate results. Losses and behavior of the setup are calculated and described in detail. Single-ended and differential structures are distinguished and handled separately. Since the antenna plays an important role, its behavior is also considered. Still, the measurement setup is contact based.