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A Novel Carrier Leakage Cancellation Circuit for RFID System

机译:一种新颖的RFID系统载波泄漏消除电路

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摘要

This paper proposed a novel high isolation leaking carrier cancelled system used in the UHF RFID reader. The circulator of conventional RFID system is replaced by the deformed microstrip rat-race circuit (RRC), furthermore, the leaking carrier extracted circuit is connected in the receiver. The amplitude and phase of leaking carrier varying need not be real-time tracking. Results showed that the TX-to-RX isolation improved 48~70 dB higher than other cancellation circuits. The proposed leaking carrier cancelled system cutting down the cost and improved obviously the isolation of Tx-Rx.
机译:本文提出了一种用于UHF RFID阅读器的新型高隔离泄漏载流子抵消系统。常规的RFID系统的循环器由变形的微带老鼠竞赛电路(RRC)代替,此外,泄漏的载波提取电路连接到接收器中。泄漏载波变化的幅度和相位不需要实时跟踪。结果表明,TX-to-RX隔离度比其他抵消电路提高了48〜70 dB。提出的泄漏载波消除了系统,降低了成本,并明显改善了Tx-Rx的隔离度。

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