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The Korean Institute of Electrical Engineers (대한전기학회)
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A Voltage-controlled Frequency Tunable CMOS Current-mode Filter for Software Radio

Software Radio용 전압제어 주파수가변 CMOS 전류모드 필터

  • 방준호 (전북대학교 IT응용시스템공학과) ;
  • 유인호 (전북대학교 IT응용시스템공학과) ;
  • 유재영 (전북대학교 IT응용시스템공학교)
  • Received : 2010.08.20
  • Accepted : 2011.02.07
  • Published : 2011.04.01
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Abstract

In this paper, a voltage-controlled frequency tunable current-mode integrator and a 3rd-order current-mode Chebyshev filter in 1.8V-$0.18{\mu}m$ CMOS is realized for software radio applications in system-on-chips. This filter is used for reconstruction purposes between a current-steering DAC and a current-mode mixer. Power consumption of the designed filter can be reduced by using a current-mode small size integrator. And also, cutoff frequency of this filter is variable between 1.2MHz and 10.1MHz, the power consumption is 2.85mW. And the voltage bias compensated circuit is used to control the voltage variation.in the designed filter.

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References

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