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학술지 Tunable Continuous-Time ΔΣ Modulator for Switching Power Amplifier
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저자
이광천, 박봉혁, 장승현, 정재호, 조경록
발행일
201211
출처
IEICE Electronics Express, v.9 no.22, pp.1714-1719
ISSN
1349-2543
출판사
IEICE
DOI
https://dx.doi.org/10.1587/elex.9.1714
협약과제
12MI1300, 차세대 이동통신 기지국용 Class-S 전력증폭기 기술 연구, 정재호
초록
A fully integrated tunable 4th-order multi-feedback bandpass delta-sigma modulator (BPDSM) fabricated in 0.25um SiGe BiCMOS is presented. The input frequency can be tuned from 945MHz to 988MHz at 2.4GHz fixed clock frequency. This modulator dissipates 110mA from 3.3V power supply. The peak signal-to-noise-ratio (SNR) of sinewave input is 41.1 dB in 10MHz bandwidth and error vector magnitude (EVM) of 64QAM long term evolution (LTE) downlink is 3.16%, 3.59%, and 3.65% at different carrier frequencies. © IEICE 2012.
키워드
BiCMOS, BPDSM, Class-S, LTE, Resonator
KSP 제안 키워드
Class-S, Clock frequency, Continuous-Time, Fully integrated, Long term Evolution(LTE), MHz bandwidth, Multi-feedback, Peak-Signal-to-Noise-Ratio(PSNR), SiGe BiCMOS, Signal noise ratio(SNR), Switching power amplifier