淡江大學機構典藏:Item 987654321/115795
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    題名: A Wideband Current Amplifier with DC-offset Cancellation Utilizing Chopper Modulation
    作者: Horng-Yuan Shih;Yu-Chuan Chang;Cheng-Wei Yang
    關鍵詞: Current amplifier;DC-offset cancellation;Chopper modulation;Analog baseband;Wideband;Receiver
    日期: 2019-02
    上傳時間: 2019-02-22 12:10:13 (UTC+8)
    出版者: Springer US
    摘要: A wideband current amplifier with DC-offset cancellation utilizing chopper modulation is proposed. Combining series–series feedback with backgate driven choppers, a wideband current amplifier with DC-offset cancellation is realized. As consumed a power of 1.495 mW under a supply voltage of 1.8 V, measured bandwidth of the current amplifier is 120 MHz, which leads the current amplifier can be adopted to compose the analog baseband of a wideband direct-conversion receiver with bandwidth of 240 MHz (twice of the baseband bandwidth). Measured current gain of the current amplifier is 15 dB. Measured output DC-offset without and with DC-offset cancellation are − 70.8 dBV and − 91 dBV, respectively. Thus, DC-offset reduction of 20 dB is achieved.
    關聯: Analog Integrated Circuits and Signal Processing 98(2), p.291-297
    DOI: 10.1007/s10470-018-1376-1
    顯示於類別:[電機工程學系暨研究所] 期刊論文

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