Periodically Time-Varying Noise Cancellation for Filtering-by-Aliasing Receiver Front Ends
Periodically Time-Varying Noise Cancellation for Filtering-by-Aliasing Receiver Front Ends
复制标题
通过混叠接收器前端进行周期性时变噪声消除
DOI:
10.1109/jssc.2020.3028357
复制
发表时间:
2021
影响因子:
5.4
通讯作者:
Pamarti, Sudhakar
中科院分区:
文献类型:
--
作者:
Bu, Shi;Hameed, Sameed;Pamarti, Sudhakar
This article presents a periodically time-varying (PTV) noise cancellation technique for filtering-by-aliasing (FA) receivers. The key to the proposed technique is the use of a time-varying transconductance (Gm) cell to sense the noise generated by the PTV resistor in an FA receiver while maintaining the sharp filtering offered by FA. A prototype IC fabricated in a 28-nm CMOS process improves the noise figure (NF) by about 3 dB while achieving over 67-dB stopband rejection with a transition bandwidth (BW) of only four times the RF BW. A minimum in-band NF of 3.2 dB and an average in-band NF of 4.2 dB are demonstrated. With an upfront N-path filter to further enhance the linearity, the measured out-of-band IIP3 is +18 dBm and the blocker 1-dB compression point is +9 dBm. The whole chip, including digital control circuitry, operates under a 0.9-V supply, while consuming 61-mW power at 500-MHz LO.
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影响因子:
5.4
作者:
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通讯作者:
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影响因子:
5.4
作者:
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影响因子:
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作者:
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DOI:
10.1109/rfic.2017.7969071
发表时间:
2017
期刊:
2017 IEEE Radio Frequency Integrated Circuits Symposium (RFIC)
影响因子:
--
作者:
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通讯作者:
J. Craninckx
DOI:
10.1109/cicc.2019.8780315
发表时间:
2019
期刊:
2019 IEEE Custom Integrated Circuits Conference
影响因子:
--
作者:
Bu, Shi;Hameed, Sameed;Pamarti, Sudhakar
通讯作者:
Pamarti, Sudhakar