A Baseband-Matching-Resistor Noise-Canceling Receiver With a Three-Stage Inverter-Only OpAmp for High In-Band IIP3 and Wide IF Applications

Anoop Narayan Bhat*, Ronan A.R. van der Zee, Bram Nauta

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

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Abstract

In this article, we propose a baseband noise-canceling receiver architecture to increase in-band linearity. A key feature of the architecture is that all active circuits are in baseband, including the low-noise transconductance amplifier (LNTA). The LNTA operating at baseband frequencies allows the use of feedback to increase the linearity. This article analyzes a tradeoff that exists between in-band linearity and noise in mixer-first receivers and shows how the proposed architecture breaks such tradeoff. The receiver targets high IF bandwidths, enabled by a transimpedance amplifier (TIA) composed of an OpAmp using only inverters. This article describes the stabilization mechanism of this OpAmp with a unity-gain bandwidth (UGB) of 7.6 GHz. The receiver is fabricated in 22-nm FDSOI CMOS. The measured results show an in-band IIP3 of > 9 dBm for an IF bandwidth of 175 MHz with sub-5-dB noise figure (NF) across 1-6-GHz local oscillator (LO) frequencies.

Original languageEnglish
JournalIEEE journal of solid-state circuits
Early online date8 Dec 2020
DOIs
Publication statusE-pub ahead of print/First online - 8 Dec 2020

Keywords

  • base station
  • high unity-gain bandwidth (UGB)
  • in-band linearity
  • inverter-only OpAmp
  • low-noise transconductanceamplifier (LNTA)
  • noise canceling
  • Stabilisation
  • transimpedance amplifier (TIA)
  • wideband IF

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