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Journal Article
A switch controlled dual‐band band pass ΔΣ modulator
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- Authors
- Bonghyuk Park, Seunghyun Jang, Jaeho Jung
- Issue Date
- 2012-12
- Citation
- Microwave and Optical Technology Letters, v.54, no.12, pp.2784-2787
- ISSN
- 0895-2477
- Publisher
- John Wiley & Sons
- Language
- English
- Type
- Journal Article
- Abstract
- 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 Keywords
- Band selection, Capacitor bank, Dc power, Dual-band, Fourth-order, Frequency tuning, High-speed comparator, Output Voltage, Peak-Signal-to-Noise-Ratio(PSNR), Power Consumption, Signal noise ratio(SNR)