Abstract
An inductive antenna mismatch recovery method is presented. The proposed method uses series LC matching network to maintain a power amplifier (PA) performance under an inductive antenna mismatch condition. This method requires only the voltage amplitude information, which reduces the complexity in implementation. This paper also presents design considerations of integrated recovery system in a complementary metal-oxide semiconductor (CMOS) process. Simulation results show that the proposed CMOS PA maintains its output power as well as efficiency very close to the well-matched 50 ? condition with inductively mismatched antenna impedance up to +j·70 which is corresponding to the voltage standing wave ratio of 2.5.
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