상세정보
학술지
A Switch Controlled Dual-Band Band Pass ΔΣ Modulator
- 발행일
- 201212
- 출처
- Microwave and Optical Technology Letters, v.54 no.12, pp.2784-2787
- ISSN
- 0895-2477
- 출판사
- John Wiley & Sons
- 협약과제
- 12MI1300, 차세대 이동통신 기지국용 Class-S 전력증폭기 기술 연구, 정재호
- 초록
- A switch controlled fourth-order dual-band bandpass delta-sigma modulator (BPDSM) is proposed. It consists of two stage second-order resonator, high-speed comparator, multifeedback current digital-to-analog converter, and clock distributer. The band selection is controlled by capacitor bank, and fine frequency tuning is done by varactor. The implemented BPDSM shows a peak signal-to-noise-ratio is 41.6 dB, 42.5 dB, an error vector magnitude is 3.06%, 2.4% in 882 MHz, 955 MHz, respectively, and a differential output voltage swing is 1.32Vp-p with dc power consumption of 389 mW. © 2012 Wiley Periodicals, Inc.
- KSP 제안 키워드
- Band selection, Capacitor bank, Dc power, Digital to Analog Converter, Dual-band, Frequency tuning, High-speed comparator, Output Voltage, Peak-Signal-to-Noise-Ratio(PSNR), Power Consumption, Signal noise ratio(SNR)