⚡ 本页包含 AI 生成的分析内容，仅供参考
该论文提出了一种CMOS自适应天线阻抗调谐IC，工作在850MHz至2GHz频段。它解决了多模收发器中由于工作频率变化和环境因素导致的PA/LNA与天线之间的阻抗失配问题，通过快速动态调谐来最小化功率反射。
Adaptive antenna-tuning units (AATUs) provide broadband dynamic tuning to widely-varying antenna impedances caused by the changes in operating frequencies and unpredictable environmental factors. AATUs are becoming a critical need in multimode transceivers, since they minimize the power reflection due to the impedance mismatch between PA/LNA and antenna at various frequencies. AATUs also enable low-cost, bandwidth-limited and low-profile antennas to be used in multiband radios. One of the fundamental requirements for AATUs is fast tuning speed to compensate for the frequent changes in operating environment and frequencies, while keeping the power consumption as low as possible. In state-of-the-art AATUs, the sensed mismatch signal is converted to the digital domain utilizing high-speed analog-to-digital converters (ADCs) to enable fast tuning [1-3]. These ADCs either consume high power or they are low resolution, which results in compromised tuning
Hang Song, Bertan Bakkaloglu, James T. Aberle
Arizona State University, Tempe, AZ