TY - GEN
T1 - A 210.4-dBc/Hz FoMT 67.9% Tuning Range LC-VCO IC with a Single Analog Voltage-Controlled Novel Varactor in 40-nm CMOS SOI
AU - Fang, Mengchu
AU - Kumura, Akihiko
AU - Yoshimasu, Toshihiko
N1 - Funding Information:
ACKNOWLEDGMENT The authors would like to thank GLOBALFOUNDRIES for chip fabrication. This work is supported by VLSI Design and Education Center (VDEC), University of Tokyo in collaboration with Cadence Design Systems, Inc., Mentor Graphics, Inc., and Keysight Technologies Japan, Ltd.
Publisher Copyright:
© 2021 IEEE.
PY - 2021/8/25
Y1 - 2021/8/25
N2 - This paper presents a wideband VCO IC with a single analog voltage-controlled novel varactor. The novel varactor which consists of two parallel Inversion-MOS (IMOS)-based varactors and a variable resistor is tuned by a single analog voltage. Two IMOS-based varactors are biased at different gate-to-source voltages so that KVCO can be improved while the variable resistance contributes to the extension of the tuning range. The proposed VCO IC is designed, fabricated, and fully evaluated on-wafer in 40-nm CMOS SOI. The proposed wideband VCO IC delivers a tuning range of 67.9% from 3.20 to 6.49 GHz and has exhibited an excellent measured FoMT of 210.4 dBc/Hz under the minimum power consumption of only 0.35 mW.
AB - This paper presents a wideband VCO IC with a single analog voltage-controlled novel varactor. The novel varactor which consists of two parallel Inversion-MOS (IMOS)-based varactors and a variable resistor is tuned by a single analog voltage. Two IMOS-based varactors are biased at different gate-to-source voltages so that KVCO can be improved while the variable resistance contributes to the extension of the tuning range. The proposed VCO IC is designed, fabricated, and fully evaluated on-wafer in 40-nm CMOS SOI. The proposed wideband VCO IC delivers a tuning range of 67.9% from 3.20 to 6.49 GHz and has exhibited an excellent measured FoMT of 210.4 dBc/Hz under the minimum power consumption of only 0.35 mW.
KW - CMOS SOI
KW - VCO
KW - varactor
KW - wideband
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U2 - 10.1109/RFIT52905.2021.9565258
DO - 10.1109/RFIT52905.2021.9565258
M3 - Conference contribution
AN - SCOPUS:85118152996
T3 - 2021 IEEE International Symposium on Radio-Frequency Integration Technology, RFIT 2021
BT - 2021 IEEE International Symposium on Radio-Frequency Integration Technology, RFIT 2021
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2021 IEEE International Symposium on Radio-Frequency Integration Technology, RFIT 2021
Y2 - 25 August 2021 through 27 August 2021
ER -