2.5 GHZ SECOND-AND FOURTH-ORDER INDUCTORLESS RF BANDPASS FILTERS

  • Thanachayanont, Apinunt (Faculty of Engineering & Research Centre of Communications and Information Technology, King Mongkut′s Institute of Technology Ladkrabang)
  • Published : 2002.07.01

Abstract

A new design approach for realising low-power low-voltage high-Q high-order RE bandpass filter is proposed. Based on the gyrator-C inductor topology, a 2$\^$nd/-order biquadratic bandpass filter can be realised by adding a series capacitor to the input port of the gyrator. High-Q 2$\^$nd/-order and 4$\^$th/-order fully differential RF bandpass filters operating in the 2.4-㎓ ISM (Industrial, scientific and medical) frequency band under a 2-V single power supply voltage with low power dissipation are reported.

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