An On-Chip Configurable Receiver With >55-dB Tx Leakage Suppression for UHF RFID Reader

Ultrahigh-frequency (UHF) radio frequency identification (RFID) reader suffers from large Tx leakage due to insufficient Tx-to-Rx isolation, especially for single-chip integration. An on-chip receiver with high Tx leakage suppression (TLS) is proposed. The frequency-translated impedance property of the passive mixer is utilized to transfer the baseband impedance to RF input to form a high-Q impeda...