상세정보
학술대회
A 2.9-GHz LC-VCO Based PLL with a Fast Automatic Frequency Control
- 발행일
- 201208
- 출처
- International Symposium on Wireless Communication Systems (ISWCS) 2012, pp.860-864
- 협약과제
- 12MI1300, 차세대 이동통신 기지국용 Class-S 전력증폭기 기술 연구, 정재호
- 초록
- A 2.9-GHz LC-VCO based PLL with a fast automatic frequency control (AFC) circuit is proposed. The fast AFC function is achieved by a fourfold reference frequency multiplication and a binary searching algorithm in a 4-bit capacitor array of an LC-VCO and completed in 4-cycles of the reference signal. The simulation results for the proposed PLL designed in a CMOS 130 nm process, show that an AFC time of only 100 ns, operation frequencies of 2.14 to 2.95 GHz, and a phase noise of -125 dBc/Hz at 1 MHz offset, while dissipating 4.9 mA at a 1.2-V supply. © 2012 IEEE.
- KSP 제안 키워드
- 130 nm, 5 GHz, Automatic frequency control, Binary searching, CMOS 130, Capacitor array, Fast automatic, Frequency multiplication, LC voltage controlled oscillator(LC-VCO), Reference frequency, Reference signal