A Analysis of Phase and Time Domain Characteristics of Elliptic Filters

타원필터의 위상 및 시간영역 특성 분석

  • Lee, Chong In (Dept. of Electrical. Eng., Chonbuk Nat'l Univ.) ;
  • Kim, Dong Yong (Dept. of Electrical. Eng., Chonbuk Nat'l Univ.) ;
  • Shin, Gun Soon (Kum Oh Institute of Technology)
  • 이종인 (전북대학교 전기공학과) ;
  • 김동용 (전북대학교 전기공학과) ;
  • 신건순 (금오공대 전자공학과)
  • Published : 1986.04.01

Abstract

In this paper, we have investigated pole-zero shifting due to variable stopband frequency Ws and passband ripple Ap of elliptic function filters. Also we have studied the phase, group-delay, unit step response and impulse response of elliptic filters. We show that in the passband the phase linearity improves as Ws increases, and eventually it approaches that of a chebyshev function filter.

Keywords