RFID reader front-end having robust Tx leakage canceller for load variation
WG Lim, SY Park, WI Son, MQ Lee… - IEEE Transactions on …, 2009 - ieeexplore.ieee.org
WG Lim, SY Park, WI Son, MQ Lee, JW Yu
IEEE Transactions on microwave theory and techniques, 2009•ieeexplore.ieee.orgA novel front-end structure for ultra-high-frequency RF identification reader is proposed. The
proposed front-end consists of a balanced coupler and four-port feed antenna system. The
proposed balanced coupler structure has high transmit/receiver isolation feature and good
insensitivity to load variations. The proposed four-port feed antenna system is applied for
removing the coupling among antennas, which deteriorates the isolation. The proposed
system is numerically analyzed and verified experimentally as well.
proposed front-end consists of a balanced coupler and four-port feed antenna system. The
proposed balanced coupler structure has high transmit/receiver isolation feature and good
insensitivity to load variations. The proposed four-port feed antenna system is applied for
removing the coupling among antennas, which deteriorates the isolation. The proposed
system is numerically analyzed and verified experimentally as well.
A novel front-end structure for ultra-high-frequency RF identification reader is proposed. The proposed front-end consists of a balanced coupler and four-port feed antenna system. The proposed balanced coupler structure has high transmit/receiver isolation feature and good insensitivity to load variations. The proposed four-port feed antenna system is applied for removing the coupling among antennas, which deteriorates the isolation. The proposed system is numerically analyzed and verified experimentally as well.
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