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학술지 A 2.6-GHz Partial-Envelope Delta-Sigma-Digitized Carrier-Bursting Transmitter
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저자
장승현, 서영호, 김창완, 정재호, 박봉혁, 김광선, 이광천
발행일
202007
출처
IEEE Microwave and Wireless Components Letters, v.30 no.7, pp.697-700
ISSN
1531-1309
출판사
IEEE
DOI
https://dx.doi.org/10.1109/LMWC.2020.2998483
협약과제
18HF1500, 5G 이동통신용 밀리미터파(40GHz 이하) 빔포밍 부품 개발, 김광선
초록
This letter presents the implementation and measurement results of a partially digitized envelope-based carrier-bursting transmitter operating at 2.6 GHz. The transmitter consists of two chips, in this case: a partial-envelope delta-sigma modulator (PEDSM) and an up-conversion mixer with 130-nm CMOS technology. A second-order continuous-time delta-sigma modulator with a 622-MHz sampling clock is designed as an envelope digitizer in the PEDSM. With a long-term evolution signal with a peak-to-average power ratio of 8.7 dB, the fabricated transmitter showed a coding efficiency of 90.4% and an error vector magnitude (EVM) of 3.44% for a PEDSM threshold level of 1/3.
키워드
Carrier-bursting transmitter, class-S, delta-sigma modulation, long term evolution (LTE), MOS integrated circuits, orthogonal frequency-division multiplexing (OFDM), power amplifiers (PAs), radio frequency (RF) integrated circuits
KSP 제안 키워드
2.6 GHz, CMOS Technology, Class-S, Coding efficiency, Continuous-time delta-sigma modulator, Delta-Sigma Modulation, Long term Evolution(LTE), MOS integrated circuits, Peak-to-Average-Power-Ratio(PAPR), Sampling clock, error vector magnitude