Design Methodology of Wide Tuning Range DGS-based VCO for K-band Applications in 0.18-μm CMOS Technology

Baichuan Chen, Samundra K. Thapa, Nusrat Jahan, Mohamed Mohamed Barakat Adel Tawfik, Ramesh K. Pokharel

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

Abstract

Recently, defected ground structure (DGS) resonators have been employed to design a low phase noise Voltage-Controlled Oscillator (VCO) for quasi-millimeter wave applications [10]. A few advantages of such VCOs are that a DGS resonator has a higher Q-factor than an on-chip spiral inductor, and it has a higher self-resonance frequency compared to a conventional LC resonator so that a stable inductance value with respect to the frequency can be realized. However, one of its drawbacks is that the tuning range of DGS-based VCOs is limited. In this paper, a method to realize a wide tuning range of DGS-based VCOs has been proposed using two interconnected DGS resonators. As a result, the designed VCO implemented in 0.18-μm 1P6M CMOS technology achieves a 19.8% tuning range with the best phase noise performance of -109.43dBc/Hz at 1-MHz offset frequency in simulations. The experiment result shows that the fabricated VCO has a phase noise of -108.41dBc/Hz at 1-MHz offset frequency with the carrier frequency of 18.51GHz, which exhibits good agreement with the simulation.

Original languageEnglish
Title of host publicationEuMIC 2021 - 2021 16th European Microwave Integrated Circuits Conference
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages26-29
Number of pages4
ISBN (Electronic)9782874870644
DOIs
Publication statusPublished - 2021
Event16th European Microwave Integrated Circuits Conference, EuMIC 2021 - London, United Kingdom
Duration: Apr 3 2022Apr 4 2022

Publication series

NameEuMIC 2021 - 2021 16th European Microwave Integrated Circuits Conference

Conference

Conference16th European Microwave Integrated Circuits Conference, EuMIC 2021
Country/TerritoryUnited Kingdom
CityLondon
Period4/3/224/4/22

All Science Journal Classification (ASJC) codes

  • Computer Networks and Communications
  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials
  • Instrumentation

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