TY - GEN
T1 - Design Methodology of Wide Tuning Range DGS-based VCO for K-band Applications in 0.18-μm CMOS Technology
AU - Chen, Baichuan
AU - Thapa, Samundra K.
AU - Jahan, Nusrat
AU - Barakat, Adel
AU - Pokharel, Ramesh K.
N1 - Funding Information:
ACKNOWLEDGMENT This work was supported in part by Casio Science Foundation, in part by The Murata Science Foundation, in part by the Telecommunication Advancement Foundation, in part by the VLSI Design and Education Center (VDEC), The University of Tokyo in collaboration with Cadence and Keysight Corporations.
Publisher Copyright:
© 2022 European Microwave Association (EuMA).
PY - 2021
Y1 - 2021
N2 - 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.
AB - 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.
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U2 - 10.23919/EuMIC50153.2022.9783689
DO - 10.23919/EuMIC50153.2022.9783689
M3 - Conference contribution
AN - SCOPUS:85132972125
T3 - EuMIC 2021 - 2021 16th European Microwave Integrated Circuits Conference
SP - 26
EP - 29
BT - EuMIC 2021 - 2021 16th European Microwave Integrated Circuits Conference
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 16th European Microwave Integrated Circuits Conference, EuMIC 2021
Y2 - 3 April 2022 through 4 April 2022
ER -