A 3.5-to-6.2-GHz Mixer-First Acoustic-Filtering Chipset with Mixed-Domain Asymmetric IF and Complex BB Recombination Achieving 170 MHz BW and +27 dBm IIP3 at 1×BW offset

Hyungjoo Seo, Mengze Sha, Jin Zhou

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This paper presents a 3.5-to-6.2-GHz high-linearity mixer-first superheterodyne receiver chipset that utilizes gigahertz intermediate-frequency (IF) acoustic filters and a Weaver-like mixed-domain recombination architecture. The proposed mixed-domain recombination architecture enables a high IF (2.6 GHz) with a wide (170 MHz) instantaneous bandwidth (BW) and reduces the number of IF lossy passive components. Leveraging inherent quadrature down-conversion in the IF receiver, we adopt complex baseband signal processing to compensate in-phase and quadrature mismatch. Also, we identify that the IF integrated transformer loss is asymmetrical with respect to primary and secondary winding quality factors, and hence utilize stacked transformers for low loss and compact size. The chipset is fabricated using a 65-nm CMOS process and demonstrates, in measurement, an out-of-band IIP3 of +27 dBm at $\mathrm{1}\times \text{BW}$ offset with a 9.7-dB NF at 3.5-GHz RF.

Original languageEnglish (US)
Title of host publication2021 IEEE Radio Frequency Integrated Circuits Symposium, RFIC 2021
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages83-86
Number of pages4
ISBN (Electronic)9781665425490
DOIs
StatePublished - Jun 7 2021
Event2021 IEEE Radio Frequency Integrated Circuits Symposium, RFIC 2021 - Virtual, Atlanta, United States
Duration: Jun 20 2021Jun 25 2021

Publication series

NameDigest of Papers - IEEE Radio Frequency Integrated Circuits Symposium
Volume2021-June
ISSN (Print)1529-2517

Conference

Conference2021 IEEE Radio Frequency Integrated Circuits Symposium, RFIC 2021
Country/TerritoryUnited States
CityVirtual, Atlanta
Period6/20/216/25/21

Keywords

  • BAW
  • Filter
  • Interference
  • Linearity
  • Mixer
  • Receiver

ASJC Scopus subject areas

  • General Engineering

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