2.4 GHz Wide-Tuning VCO Using Switchable IMOS-Based Varactor in 180-nm CMOS

Bo Han Lee, Yi Yuang Lin, Tzuen Hsi Huang

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

Abstract

This paper presents an LC voltage-controlled oscillator (VCO) design which utilizes a set of Inversion-MOS (IMOS)-based varactors. The varactor set is switchable by using a transmission gate such that the tuning range can be extended. The proposed VCO is designed, implemented, and fully evaluated on the wafer in 180-nm CMOS technology. The experimental results show that the VCO has a tuning range of 18.6% from 2.15 to 2.59 GHz. The measured FOMT of-185.2 and-183.2dBc/Hz is achieved when the switches are turned on and off, respectively. The VCO core consumes 6. S9mA at the supply voltage of 1.8V, including the bias current of the IMOS-based varactor set.

Original languageEnglish
Title of host publication2021 IEEE International Symposium on Radio-Frequency Integration Technology, RFIT 2021
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781665433914
DOIs
Publication statusPublished - 2021 Aug 25
Event2021 IEEE International Symposium on Radio-Frequency Integration Technology, RFIT 2021 - Hualien, Taiwan
Duration: 2021 Aug 252021 Aug 27

Publication series

Name2021 IEEE International Symposium on Radio-Frequency Integration Technology, RFIT 2021

Conference

Conference2021 IEEE International Symposium on Radio-Frequency Integration Technology, RFIT 2021
Country/TerritoryTaiwan
CityHualien
Period21-08-2521-08-27

All Science Journal Classification (ASJC) codes

  • Computer Networks and Communications
  • Electrical and Electronic Engineering
  • Instrumentation

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