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A Wideband Blocker-Tolerant Receiver With Frequency-Translational Resistive Feedback

Lenka, Manas Kumar and Banerjee, Gaurab (2019) A Wideband Blocker-Tolerant Receiver With Frequency-Translational Resistive Feedback. In: IEEE TRANSACTIONS ON VERY LARGE SCALE INTEGRATION (VLSI) SYSTEMS, 27 (5). pp. 993-1006.

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Official URL: https://doi.org/ 10.1109/TVLSI.2019.2895624

Abstract

This paper presents a wideband frequency-translational resistive-feedback receiver (RX), operational from 0.1 to 2.2 GHz. Different blocker suppression techniques are proposed to improve both out-of-band (OOB) compression and weakly nonlinear distortion of the RX. The blockers are first rejected at the RX input using an N-path filter. Then, a blocker current cancellation (BCC) technique is used to mitigate the effect of nonlinearity in the transimpedance amplifier. By introducing an auxiliary path in the RX, the OOB linearity of the RX is further improved by means of frequency-translational noise cancellation (FTNC) and split-BCC. The RX prototype fabricated in a 130-nm CMOS process achieves 2.6-3.2-dB noise figure (NF) and tolerates a 0-dBm blocker at a 50-MHz offset with an NF of 4.9 dB. At 40-MHz offset from the local oscillator (LO), the RX exhibits higher +23-dBm out-of-band input-referred inter modulation product of order 3 (OB-IIP3) without FTNC and higher +26 dBm OB-IIP3 with FTNC.

Item Type: Journal Article
Additional Information: copyright for this article belongs toIEEE TRANSACTIONS ON VERY LARGE SCALE INTEGRATION (VLSI) SYSTEMS
Keywords: Blocker current cancellation (BCC); low noise; N-path filter (NPF); noise canceling; S-11 centering; software-defined radio; split-blocker current cancellation; wideband receiver (RX)
Department/Centre: Division of Electrical Sciences > Electrical Communication Engineering
Depositing User: Id for Latest eprints
Date Deposited: 22 Jul 2019 10:56
Last Modified: 22 Jul 2019 10:56
URI: http://eprints.iisc.ac.in/id/eprint/62881

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