A C-Band Commutated-LC-Negative-R Delay Circuit with Harmonic Power Recycling Achieving 1.5-ns Delay, 1.4-GHz BW, and 6-dB IL

Shuxin Ming, Rakibul Islam, Jin Zhou

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

Abstract

This work presents a commutated-LC-negative-R delay circuit for broadband signal processing at RF. It introduces negative resistance to compensate inductor loss in a commutated­-LC broadband delay circuit, and unveils a new capability of time-varying RF circuits that we call harmonic power recycling. For a time-invariant circuit or an N-path filter circuit, its desired passband consists of only one harmonic. Hence, energies at all other harmonics provided by the broadband negative resistance are wasted. In contrast, a commutated-LC broadband delay circuit has multiple harmonics across its passband, recycling the wasted RF energies from the negative resistance. This harmonic power recycling results in improved noise figure and low dc power in addition to reduced insertion loss (IL). A proof-of-concept CMOS delay line is implemented, achieving 1.5-ns delay, 1.4-GHz instantaneous bandwidth (BW), and 6-dB IL at the C band.

Original languageEnglish (US)
Title of host publication2022 IEEE Radio Frequency Integrated Circuits Symposium, RFIC 2022
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages271-274
Number of pages4
ISBN (Electronic)9781665496117
DOIs
StatePublished - 2022
Event2022 IEEE Radio Frequency Integrated Circuits Symposium, RFIC 2022 - Denver, United States
Duration: Jun 19 2022Jun 21 2022

Publication series

NameDigest of Papers - IEEE Radio Frequency Integrated Circuits Symposium
Volume2022-June
ISSN (Print)1529-2517

Conference

Conference2022 IEEE Radio Frequency Integrated Circuits Symposium, RFIC 2022
Country/TerritoryUnited States
CityDenver
Period6/19/226/21/22

Keywords

  • Cmos
  • delay
  • harmonic
  • linear periodically time varying
  • low noise
  • N-path filter
  • radio frequency

ASJC Scopus subject areas

  • General Engineering

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