PROJECT TITLE :
A 1.8 dB NF Blocker-Filtering Noise-Canceling Wideband Receiver With Shared TIA in 40 nm CMOS
This paper presents a high-performance 2-path wideband receiver (RX) for 4G LTE applications. The RX uses an extra GM stage when the LNA to improve the noise figure (NF). Furthermore, completely different RF and baseband blocker rejection techniques are proposed to considerably improve the linearity of the RX. The blockers are first rejected when the LNA stage through an N-path filter. Then, a novel base-band blocker filtering (BBBF) technique improves IIP3 by seven dB. A twin-mixer architecture is additionally utilized to attenuate blockers each before and when the mixer stage. The N-path filter noise is sensed out-of-section by the RX main path and cancelled at the inputs of the shared TIA. The RX achieves one.eight dB NF with 50 dB gain at a pair of GHz in forty nm CMOS technology. The RX out-of-band IIP3 is +five dBm, that is improved by twenty dB employing the proposed techniques, while consuming 36 mW.
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