상세정보
학술대회
A Ka-Band FMCW PLL Synthesizer with 8.5-GHz Bandwidth for High-Precision High-Resolution Sub-mmWave Radar Sensing
- 발행일
- 202105
- 출처
- International Symposium on Circuits and Systems (ISCAS) 2021, pp.1-5
- 협약과제
- 21HS3700, 경량 RISC-V 기반 초저전력 인텔리전트 엣지 지능형반도체 기술 개발, 구본태
- 초록
- A 31.4-39.9GHz mmWave PLL synthesizer for FMCW radar applications is proposed that consists of a complementary Colpitts-assisted class-B/C VCO, a programmable quadratic-curved charge pump, and a digital chirp-code generator. The complementary Colpitts oscillator is employed to supply more negative resistance around 40GHz. The charge pump produces quadratic-curved current to keep loop bandwidth constant. The fractional-N PLL synthesizer achieves locking range of 31.4-39.9GHz, a minimum FM rms error of 160 kHz, a high-speed chirp rate of 50μs, and a maximum FM modulation bandwidth of 8.5 GHz. The PLL implemented by using 65nm CMOS process accomplishes phase noise of -89dBc/Hz at 1MHz offset from 33.9GHz and consumes 60mW.
- KSP 제안 키워드
- 5 GHz, 65nm CMOS, CMOS Process, Charge pump, Class B, Code Generator, Colpitts oscillator, Fractional-N PLL, High Speed, High-resolution, Locking range