⚡ 本页包含 AI 生成的分析内容，仅供参考
本文提出了一种无隔离器的CMOS射频前端，用于UHF移动RFID阅读器，旨在解决同时收发（TX/RX）操作下的自干扰问题。通过集成化设计，该方案替代了传统的片外环形器或隔离器，提高了系统集成度并减小了体积，同时改善了线性度和效率。
research on how to guarantee a reliable RX performance under simultaneous TX/RX operation. To isolate RX from the TX self-jammer, the RFID transceivers are generally accompanied by an off-chip circulator or isolator. This has advantages in selectivity between tag signal and blocker, but it results in a low level of integration and bulky system [1,2,4]. In addition, to meet the stringent linearity requirement, the RFID reader needs to adopt a linear PA with sufficient power back-off, which degrades a global efficiency. Considering that battery life time is the critical issue particularly for mobile applications, existing UHF RFID readers are unsuitable for the mobile RFID technology due to their low system efficiency and low integration level. Figure 26.2.1 describes the mechanisms of DC offset and PN-induced noise,
Eun-Hee Kim1, Kwyro Lee1, Jinho Ko2, 1
KAIST, Daejeon, Korea, PHYCHIPS, Daejeon, Korea 2 RFID systems are based on backscattering communications, and this encourages