NDLI: A 1.8 dB NF blocker-filtering noise-canceling wideband receiver with shared TIA in 40nm CMOS

Content Provider	IEEE Xplore Digital Library
Author	Hedayati, H. Lau, W.-F.A. Namsoo Kim Aparin, V. Entesari, K.
Copyright Year	2014
Description	Author affiliation: Qualcomm Inc., San Diego, CA, USA (Lau, W.-F.A.; Namsoo Kim; Aparin, V.) \|\| AMSC, Texas A&M Univ., College Station, TX, USA (Hedayati, H.; Entesari, K.)
Abstract	This paper presents a high performance two-path wideband receiver (RX) for mobile applications. The RX uses an extra gain stage after the LNA to significantly improve the noise figure (NF). Furthermore, different RF and baseband blocker rejection techniques are proposed to significantly improve the linearity of the RX. The blockers are first rejected after the LNA stage through an N-path filter. Then, a novel base-band blocker filtering (BBBF) technique improves IIP3 by 7 dB. A dual mixer architecture is also employed to attenuate blockers both before and after the mixer stage. The N-path filter noise is sensed out-of-phase by the main path and cancelled at the inputs of the shared TIA. The RX achieves 1.8 dB NF with 50 dB gain at 2 GHz in 40nm CMOS technology. The RX out-of-band IIP3 is +5 dBm, which is improved by 20 dB by the proposed techniques, while consuming 36 mW.
Starting Page	325
Ending Page	328
File Size	503786
Page Count	4
File Format	PDF
ISBN	9781479938629
ISSN	15292517
e-ISBN	9781479938643
DOI	10.1109/RFIC.2014.6851732
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-06-01
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Receivers Mixers Noise Frequency measurement Noise measurement Band-pass filters Wideband baseband blocker filtering Wideband receiver out of band blocker blocker filtering noise cancellation trans-impedance amplifier
Content Type	Text
Resource Type	Article

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