Dual-channel injection-locked quadrature lo generation for a 4-GHz instantaneous bandwidth receiver at 21-GHz center frequency

Mohammad Elbadry, Bodhisatwa Sadhu, Joe X. Qiu, Ramesh Harjani

Research output: Contribution to journalArticlepeer-review

13 Scopus citations

Abstract

This paper presents a local oscillator (LO) generation scheme for a 21-GHz center-frequency 4-GHz instantaneous bandwidth channelized receiver. A single 1.33-GHz reference source is used to simultaneously generate 20-and 22-GHz LOs with quadrature outputs. Injection locking is used instead of conventional phase-locked loop techniques allowing low-power quadrature generation. A harmonic-rich signal, containing both even and odd harmonics of the input reference signal, is generated using a digital pulse slimmer. Two injection-locked oscillator chains are used to lock on to the 10th and 11th harmonics of the reference signal generating the 20-and 22-GHz quadrature LOs, respectively. The prototype design is implemented in IBM's 130-nm CMOS process, draws 110 mA from a 1.2-V supply, and occupies an active area of 1.8 mm 2.

Original languageEnglish (US)
Article number6425528
Pages (from-to)1186-1199
Number of pages14
JournalIEEE Transactions on Microwave Theory and Techniques
Volume61
Issue number3
DOIs
StatePublished - Feb 5 2013

Keywords

  • Channelized receiver
  • divider
  • injection locking
  • injection-locked frequency divider (ILFD)
  • injection-locked frequency multiplier (ILFM)
  • instantaneous wideband
  • multiplier injection-locked oscillator (ILO)
  • oscillator
  • quadrature
  • quadrature voltage-controlled oscillator (QVCO)
  • voltage-controlled oscillator (VCO)

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