1-3-GHz self-aligned open-loop local quadrature phase generator with phase error below 0.4°

Michael Kalcher*, Daniel Gruber, Davide Ponton

*Corresponding author for this work

Research output: Contribution to journalArticle

Abstract

The circuit architecture to generate differential CMOS quadrature (I/Q) local oscillator (LO) signals from a differential input at the same frequency is presented. The circuit features an open-loop implementation, which relies on two matched delays and linear phase interpolation. The feasibility of this approach is demonstrated by implementing an I/Q generator covering the operating frequency range from 1 to 3 GHz, manufactured in a 28-nm bulk-CMOS process. The optimum phase accuracy is better than ±0.4° for the entire measured frequency region. A phase noise performance of -163.2 dBc/Hz at 100-MHz offset is achieved at 2 GHz with a power consumption of only 4.4 mW from a 1.1-V supply.

Original languageEnglish
Article number9130154
Pages (from-to)3510-3518
Number of pages9
JournalIEEE transactions on microwave theory and techniques
Volume68
Issue number8
DOIs
Publication statusPublished - Aug 2020

Keywords

  • I/Q
  • local oscillator (LO) distribution
  • multiphase generator
  • phase interpolation
  • quadrature generator
  • quadrature LO

ASJC Scopus subject areas

  • Radiation
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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