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학술대회 A 31.8 - 40.8GHz Continuously Wide-Tuning VCO Based on Class-B Oscillator using Single Varactor and Inductor
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저자
이자열, 강동우, 백영석, 구본태
발행일
201806
출처
Radio Frequency Integrated Circuits (RFIC) Symposium 2018, pp.204-207
DOI
https://dx.doi.org/10.1109/RFIC.2018.8429032
협약과제
18ZB1300, ICT 융합소자 핵심기술 개발, 이진호
초록
A 31.8-40.8GHz continuously voltage-tuning LC-tank CMOS differential VCO is presented that has been designed by using only a pair of varactors and single symmetric inductor available from library, and adopting class-B oscillator. The push-pull complementary class-B oscillator is applied in the VCO to isolate LC-tank resonator from external and internal loads, and to produce more negative resistance, and thus resulting in wide frequency tuning range. The VCO shows 24.8% tuning range, -93.5dBc/Hz phase noise at 1MHz offset, and -14dBm output power with 50廓 load. The VCO is manufactured using 40nm CMOS process with consuming 20mW in oscillator circuit.
키워드
Class-B oscillator, Colpitts, phase noise, tuning range, VCO
KSP 제안 키워드
40nm CMOS, CMOS Process, Class B, Differential VCO, Frequency tuning range, Internal loads, LC tank, Oscillator circuit, Output power, Wide frequency, Wide tuning