標題: A 250 MHz 14 dB-NF 73 dB-Gain 82 dB-DR Analog Baseband Chain With Digital-Assisted DC-Offset Calibration for Ultra-Wideband
作者: Shih, Horng-Yuan
Kuo, Chien-Nan
Chen, Wei-Hsien
Yang, Tzu-Yi
Juang, Kai-Chenug
電子工程學系及電子研究所
Department of Electronics Engineering and Institute of Electronics
關鍵字: Analog filter;current-mode filter;current-mode VGA;DC offset calibration;analog baseband;ultra wideband
公開日期: 1-二月-2010
摘要: A 250 MHz analog baseband chain for Ultra-Wideband was implemented in a 1.2 V 0.13 mu m CMOS process. The chip has an active area of 0.8 mm(2). In the analog baseband, PGAs and filters are carried out by current-mode amplifiers to achieve wide bandwidth and wide dynamic range of gain, as well as low noise and high linearity. Besides, a current-mode Sallen-Key low-pass filter is adopted for effective rejection of out-of-band interferers. A 6th-order Chebyshev low-pass filter realized in G(m)-C topology is designed in the baseband chain for channel selection. Digitally-assisted DC-offset calibration improves second-order distortion of the entire chain. The design achieves a maximum gain of 73 dB and a dynamic range of 82 dB. Measured noise figure is 14 dB, an IIP3 of -6 dBV, and IIP2 of -5 dBV at the maximum gain mode. The analog baseband chain consumes 56.4 mA under supply of 1.2 V.
URI: http://dx.doi.org/10.1109/JSSC.2009.2036320
http://hdl.handle.net/11536/5885
ISSN: 0018-9200
DOI: 10.1109/JSSC.2009.2036320
期刊: IEEE JOURNAL OF SOLID-STATE CIRCUITS
Volume: 45
Issue: 2
起始頁: 338
結束頁: 350
顯示於類別:期刊論文


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