Dual-Core High-Swing Class-C VCO design

Tae Yeon Kim; Byung Sung Kim

doi:10.23075/jicas.2020.6.4.003

Tae Yeon Kim Sungkyunkwan University
Byung Sung Kim Sungkyunkwan University

DOI: https://doi.org/10.23075/jicas.2020.6.4.003

Keywords: Figure of merit, low-noise oscillators, phase noise, voltage-controlled oscillators

Abstract

We utilize the idea of reducing phase noise (PN) by combining multiple oscillators. The dual core LC-tank oscillator is based on a high-swing class-C topology and realized in 65-nm CMOS process. As a result of simulation, it is tunable within 1.12-1.25 GHz, while drawing 1.7 mA from a 1.2 V power supply. PN is −135.0 dBc/Hz at 1MHz, respectively, from a 1.12 GHz carrier frequency.

Author Biographies

Tae Yeon Kim, Sungkyunkwan University

Tae Yeon Kim received the B.S. degrees in semiconductor system engineering from Sungkyunkwan University, Suwon, Korea, in 2020. He is currently working toward the M.S. degree in Dept. of Semiconductor and Display Engineering at Sungkyunkwan University. His research interest includes RFIC and frequency synthesizer.

Byung Sung Kim, Sungkyunkwan University

Byung Sung Kim received the B.S., M.S., and Ph.D. degrees in electronic engineering from Seoul National University, Seoul, Korea, in 1989, 1991, and 1997, respectively. In 1997, he joined the College of Information and Communications, Sungkyunkwan University, Suwon, Gyeonggi-Do, Korea, where he is currently a Professor. His research interests include high-frequency device modeling and RF/mmwave integrated circuit design.

Homepage : https://rfmd.skku.ac.kr/