A novel square-root domain realization of first order all-pass filter

ÖLMEZ S., ÇAM U.

TURKISH JOURNAL OF ELECTRICAL ENGINEERING AND COMPUTER SCIENCES, vol.18, no.1, pp.141-146, 2010 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 18 Issue: 1
  • Publication Date: 2010
  • Doi Number: 10.3906/elk-0904-11
  • Journal Name: TURKISH JOURNAL OF ELECTRICAL ENGINEERING AND COMPUTER SCIENCES
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, TR DİZİN (ULAKBİM)
  • Page Numbers: pp.141-146
  • Keywords: Square-root domain circuits, All-pass filter, Slate-space synthesis, DESIGN, LAW
  • Dokuz Eylül University Affiliated: Yes

Abstract

In this paper, a new square-root domain, first order, all-pass filter based on the MOSFET square law is presented The proposed filter is designed by using nonlinear mapping on the state variables of a state space description of the transfer function To the best knowledge of the authors, the filter is the first square-root domain first order all-pass structure designed by using state space synthesis method in the literature The center frequency of the all-pass filter is not only attainable at megahertz frequencies but, also tunable by an external bias current The proposed filter operated 2 5 V supply voltage is constructed by current, mirrors, geometric mean circuits, a linear transconductor circuit, and a capacitor SPICE simulations are given to approve the theoretical analysis