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该论文提出了一种RF-to-BB电流复用宽带接收机，通过并行N-path有源/无源混频器和单MOS管极点-零点低通滤波器，解决了传统无源混频器优先接收机中噪声系数差和线性度下降的问题，实现了功耗与性能的更好权衡。
UMTEC, Macao, China, 3 Instituto Superior Tecnico, Lisbon, Portugal 1 2 The latest passive-mixer-first wideband receiver (RX) [1] has managed to squeeze the power (10 to 12mW) via resonant multi-phase LO and current-reuse harmonic rejection BB, but the removals of RF gain and virtual ground severely penalize its NF (10.5±2.5dB), while devaluing its original IIP3 benefits (+10dBm). The described wideband RX exploits an RF-to-BB current-reuse topology, with parallel N-path active/passive mixers, to leverage such power-performance tradeoffs. Specifically, the RX features: 1) a current-reuse RF front-end with an N-path active mixer to realize most RF-to-BB functions in the current domain, resulting in better power efficiency and linearity; 2) a feedforward N-path passive mixer to enable LO-defined input matching with zero external components, while offering frequency-translated band-pass filtering and noise cancelling; 3) a single-MOS pole-zero LPF to perform current-mode BB filtering whil
Fujian Lin1, Pui-In Mak1,2, Rui Martins1,2,3
University of Macau, Macao, China,