Design of square-root domain filters

Gwo Jeng Yu, Chun Yueh Huang, Bin Da Liu, Jenn Jiun Chen

Research output: Contribution to journalArticlepeer-review

21 Citations (Scopus)

Abstract

In this paper, a square-root domain band-pass filter and biquad filter which are based on the MOSFET square law are proposed. Both of the square-root domain filters operated at 2.5 V supply voltage are constituted by current mirrors, current-mode square-root circuits and capacitors. The circuits presented have been simulated and fabricated using 0.25 μ m CMOS process. Both of simulation and measured results which are in good agreement indicate that the center frequency f 0 is not only attainable at megahertz frequencies but also tunable electronically. The proposed circuits have the merits of high frequency operation, tuneability, low power supply voltage operation, low third order intermodulation distortion and low total harmonic distortion.

Original languageEnglish
Pages (from-to)49-59
Number of pages11
JournalAnalog Integrated Circuits and Signal Processing
Volume43
Issue number1
DOIs
Publication statusPublished - 2005 Apr

All Science Journal Classification (ASJC) codes

  • Signal Processing
  • Hardware and Architecture
  • Surfaces, Coatings and Films

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