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

4 Citations (Scopus)
337 Downloads (Pure)

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
Pages (from-to)1994-2006
Number of pages13
JournalIEEE journal of solid-state circuits
Volume56
Issue number7
Early online date8 Dec 2020
DOIs
Publication statusPublished - 1 Jul 2021

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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