논문 해외 국제전문학술지(SCI급) An 18-19.2 GHz Voltage-Controlled Oscillator with a Compact Varactor-Only Capacitor Array
- 학술지 구분 국제전문학술지(SCI급)
- 게재년월 2023
- 저자명 김주성공동(제1),조건희,이상훈,전희석,HAPSAH AULIA AZZAHRA,MAULUDIN MUHAMMAD FAKHRI
- 학술지명 Electronics
- 발행처명 MDPI
- 발행국가 해외
- 논문언어 외국어
홈페이지논문 초록 (Abstract)
: This paper presents a K-band CMOS cross-coupled pair voltage-controlled oscillator (VCO) that utilizes the varactor-only capacitor network. The proposed circuit features low parasitics and a compact capacitor network, such that the varactor in the analog tuning path directly affects the oscillation frequency with a large gain of the VCO, and the varactor in the digital tuning path results in minimal noise sources, thus achieving low phase noise for the automotive FMCW radar application. This VCO was designed using TSMC 65 nm technology, and the post-layout simulation results show a stable oscillation across 18–19.2 GHz, a minimum phase noise of −105.9 and −128 dBc/Hz at 1- and 10-MHz offset frequencies while dissipating 21 mW of power from a 1 V supply. Furthermore, no notable variations in phase noise are observed across the oscillation frequency tuning range. It reveals a figure of merit (FOM)