Novel Allpass Filter Configuration Employing Single OTRA

Cakir C., Cicekoglu O., ÇAM U.

IEEE Transactions on Circuits and Systems II: Express Briefs, cilt.52, sa.3, ss.122-125, 2005 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 52 Sayı: 3
  • Basım Tarihi: 2005
  • Doi Numarası: 10.1109/tcsii.2004.842055
  • Dergi Adı: IEEE Transactions on Circuits and Systems II: Express Briefs
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.122-125
  • Anahtar Kelimeler: allpass filters, analog integrated circuits, operational transresistance amplifiers (OTRAs), OPERATIONAL TRANSRESISTANCE AMPLIFIER, ALL-PASS, CURRENT CONVEYOR
  • Dokuz Eylül Üniversitesi Adresli: Evet

Özet

A new circuit configuration uses a single operational transresistance amplifier (OTRA) and four passive elements to realize both first- and second-order allpass filters. Owing to internal grounding of the OTRA input terminals, effects of input parasitics are significantly reduced. Applications of the circuit include the realization of the phase equalizer, the quadrature oscillator, and the high-Q bandpass filter for analog signal processing. The performance of the allpass filter is illustrated by circuit-level simulation of a quadrature oscillator with CMOS realization of the OTRA. © 2005, The Institute of Electrical and Electronics Engineers, Inc. All rights reserved.