Design and Implementation of a Fourth-Order Quadrature Band-Pass Delta-Sigma Modulator for Low-IF Receivers
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概要
- 論文の詳細を見る
The delta-sigma modulator(DSM) is an excellent choice for high-resolution analog-to-digital converters. Recently, a band-pass DSM has been a desirable choice for direct conversion of an IF signal into a digital bit stream. This paper proposes a quadrature band-pass DSM for digitizing a narrow-band IF signal. This modulator can achieve a lower total order, higher signal-to-noise ratio(SNR), and higher bandwidth when compared with conventional band-pass modulators. An experimental prototype employing the quadrature topology has been integrated in 0.6 μm, double-poly, double-metal CMOS technology with capacitors synthesized from a stacked poly structure. This system clocked at 13 MHz and digitized a 200 kHz bandwidth signal centered at 4.875 MHz with 100 dB of dynamic range. Power consumption is 190 mW at 5 V.
- 社団法人電子情報通信学会の論文
- 2000-12-25
著者
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CHOI Pyung
School of Electronic and Electrical Engineering, Kyungpook National University
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WOO Chang-Gene
School of Electronic and Electrical Engineering at Kyungpook National University
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Choi P
Kyungpook National Univ. Daegu Kor
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Choi P
Kyungpook National Univ. Taegu Kor
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Seo Hae-moon
The School Of Electronic And Electrical Engineering At Kyungpook National University
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Oh Sang-won
The School Of Electronic And Electrical Engineering At Kyungpook National University
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JUNG Sung-Wook
the School of Electronic and Electrical Engineering at Kyungpook National University
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WOO Chang-Gene
the School of Electronic and Electrical Engineering at Kyungpook National University
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CHOI Pyung
the Faculty of the School of Electronic and Electrical Engineering at Kyungpook National University
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