ETRI Journal

Electronics and Telecommunications Research Institute (한국전자통신연구원)
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A Highly Linear CMOS Baseband Chain for Wideband Wireless Applications

  • Yoo, Seoung-Jae (Analog VLSI Lab, Department of Electrical Engineering, The Ohio State University) ;
  • Ismail, Mohammed (Analog VLSI Lab, Department of Electrical Engineering, The Ohio State University)
  • Received : 2004.02.25
  • Published : 2004.10.31
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Abstract

The emergence of wide channel bandwidth wireless standards requires the use of a highly linear, wideband integrated CMOS baseband chain with moderate power consumption. In this paper, we present the design of highly linear, wideband active RC filters and a digitally programmable variable gain amplifier. To achieve a high unity gain bandwidth product with moderate power consumption, the feed-forward compensation technique is applied for the design of wideband active RC filters. Measured results from a $0.5{\mu}m$ CMOS prototype baseband chain show a cutoff frequency of 10 MHz, a variable gain range of 33 dB, an in-band IIP3 of 13 dBV, and an input referred noise of 114 ${\mu}Vrms$ while dissipating 20 mW from a 3 V supply.

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References

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