Injection pulling mitigation in CMOS voltage-controlled oscillator using a novel honeycomb-shaped planar inductor

Boon Eu Seow, Shih Tang Lin, Tzuen-Hsi Huang, Huey-Ru Chuang

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2 Citations (Scopus)

Abstract

This brief presents the injection pulling mitigation of a voltage-controlled oscillator (VCO) using a novel honeycomb-shaped planar inductor. Due to the twisted routes of the sub-coils in the proposed inductor, the interference caused by a nearby electromagnetic noise source can be compensated and reduced. By using a 0.18-μm standard CMOS process, the proposed inductor and a conventional single-turn spiral inductor in a similar size are integrated into two respective VCO testchips. The injection pulling behaviors of these two oscillators are studied and compared. The experimental results show that the VCO integrated with the proposed honeycomb-shaped planar inductor can significantly mitigate the injection pulling phenomenon as compared with the VCO integrated with a conventional single-turn inductor in a similar size. In this brief, the enhancement of mitigation over 15 dB can be achieved.

Original languageEnglish
Article number8336914
Pages (from-to)6-10
Number of pages5
JournalIEEE Transactions on Circuits and Systems II: Express Briefs
Volume66
Issue number1
DOIs
Publication statusPublished - 2019 Jan 1

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Variable frequency oscillators

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering

Cite this

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AU - Huang, Tzuen-Hsi

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