A 1.8 dB NF Blocker-Filtering Noise-Canceling Wideband Receiver With Shared TIA in 40 nm CMOS
作者： Hajir Hedayati , Wing-Fat Andy Lau , Namsoo Kim , Vladimir Aparin , Kamran Entesari
DOI: 10.1109/JSSC.2015.2403324
关键词:
摘要: This paper presents a high-performance two-path wideband receiver (RX) for 4G LTE applications. The RX uses an extra GM stage after the LNA to improve noise figure (NF). Furthermore, different RF and baseband blocker rejection techniques are proposed significantly linearity of RX. blockers first rejected through N-path filter. Then, novel base-band filtering (BBBF) technique improves IIP3 by 7 dB. A dual-mixer architecture is also employed attenuate both before mixer stage. filter sensed out-of-phase main path cancelled at inputs shared TIA. achieves 1.8 dB NF with 50 gain 2 GHz in 40 nm CMOS technology. out-of-band +5 dBm, which improved 20 employing techniques, while consuming 36 mW.
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