A 60-GHz injection-locked frequency divider using multi-order LC oscillator topology for wide locking range

Keita Takatsu, Hirotaka Tamura, Takuji Yamamoto, Yoshiyasu Doi, Koichi Kanda, Takayuki Shibasaki, Tadahiro Kuroda

    Research output: Contribution to journalArticle

    Abstract

    A 60-GHz injection-locked frequency divider (ILFD) is presented. A multi-order LC oscillator topology is proposed to enhance the locking range of the divider. A design guideline is described based on a theoretical analysis of the locking range enhancement. A test chip is fabricated in 65 nm CMOS. Measured locking range with 0 dBm input power is 48.5-62.9 GHz (25.9%), which is 63.6% wider compared to the previously reported ILFD. Power consumption excluding buffers and biasing circuits is 1.65mW from 1.2V supply. The core ILFD area is 0.0157mm2 even with an extra pair of inductors.

    Original languageEnglish
    Pages (from-to)1049-1052
    Number of pages4
    JournalIEICE Transactions on Electronics
    VolumeE94-C
    Issue number6
    DOIs
    Publication statusPublished - 2011 Jun

    Keywords

    • 60-GHz
    • CMOS
    • ILFD
    • Locking range
    • Multi-order LC oscillator

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Electrical and Electronic Engineering

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