Abstract
Passive, backscatter radio frequency identification (RFID) systems are often range limited by the power incident on the radio frequency (RF) tag. We have demonstrated an increase in the power incident on the RF tag using transmit diversity in a monostatic backscatter channel. Transmit diversity was achieved by phase conjugating the forward link of the backscatter channel associated with each reader antenna. The resulting increase in incident power will increase the range of passive backscatter systems and improve performance in fading environments.
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