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Conference Paper
Advanced Class-S 송신기를 위한 연속시간 델타-시그마 모듈레이터
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- Issue Date
- 2013-07
- Citation
- 대한전자공학회 종합 학술 대회 (하계) 2013, pp.221-224
- Publisher
- 대한전자공학회
- Language
- Korean
- Type
- Conference Paper
- Abstract
- A continuous-time delta-sigma modulator (CTDSM), which is suitable for an advanced Class-S transmitters, is presented. The second order CTDSM shows a signal-to-noise-distortion ratio (SNDR) of 44.7 dB and a spurious free dynamic range (SFDR) of 63.6 dB with a 3.1-MHz sinusoidal input at 522.24 MS/s. The power consumption of the modulator is 13.4 mW from a 1.2 V supply. Measurements with a mixer show that the proposed modulator modulates a 10-MHz long-term evolution signal which has an 8.5 dB peak-to-average power ratio with 3.2 % error vector magnitude and 39.4 dB adjacent channel leakage ratio.
- KSP Keywords
- Adjacent channel leakage ratio(ACLR), Class-S, Continuous-time delta-sigma modulator, Distortion ratio, Long term Evolution(LTE), Peak-to-Average-Power-Ratio(PAPR), Power Consumption, Signal-to-Noise, error vector magnitude, second-order, spurious-free dynamic range(SFDR)