Time-varying Butterworth Filters with Compensated Group Delay
نویسندگان
چکیده
This paper presents the concept of time-varying Butterworth filters with linear phase response. The compensation of the phase characteristics is carried out with the aid of the phase shifter system. The paper shows that it is possible to shorten the transient state in low-pass phasecompensated analog filters by varying in time selected parameters. This paper contains simulation results of the proposed filters and comparison with the classic circuits.
منابع مشابه
Group Delay Analysis of IIR Butterworth Filter for different Orders
Generally Digital Signal Processing is Mathematical manipulation of the signals. The manipulation parameters may get differ from one technique to another. In this paper IIR Butterworth filters has been designed for various orders to analyze group delay. The developed IIR filters are designed and simulated using matlab with different filter orders. The simulated results shows that IIR filters wi...
متن کاملA Closed Form Transfer Function of Low Delay Bandpass FIR Filters with Maximally Flat characteristics in the Passband and the Transmission Zeros in the Stopband
The large group delay of the high order FIR filters is unacceptable in some applications. So, recently, how to reduce the group delay of FIR filters has been studied intensively. To reduce the ringing in the time domain and to maximize the stopband attenuation, it is useful to design FIR filters with maximally flat characteristics in the passband and transmission zeros in the stopband. We prese...
متن کاملDesign of Low Delay Bandpass FIR Filters with Maximally Flat Characteristics in the Passband and the Transmission Zeros in the Stopband
Abstract: The large group delay of the high order FIR filters is unacceptable in some applications. Therefore, recently, how to reduce the group delay of FIR filters has been studied intensively. To reduce the ringing in the time domain and to maximize the stopband attenuation, it is useful to design FIR filters with maximally flat characteristics in the passband and transmission zeros in the s...
متن کاملActive RC Filter Based Implementation Analysis Part of Two Channel Hybrid Filter Bank
In the present paper, a new design method for continuous-time powersymmetric active RC filters for Hybrid Filter Bank (HFB) is proposed. Some theoretical properties of continious-time power-symmetric filters bank in a more general perspective are studied. This includes the derivation of a new general analytical form, and a study of poles and zeros locations in s-plane. In the proposed design me...
متن کاملFormulas for Orthogonal IIR Wavelet Filters - Signal Processing, IEEE Transactions on
Explicit solutions are given for the rational function P (z) for two classes of IIR orthogonal two-band wavelet bases, for which the scaling filter is maximally flat. P (z) denotes the rational transfer function H(z)H(1=z), where H(z) is the (lowpass) scaling filter. The first is the class of solutions that are intermediate between the Daubechies and the Butterworth wavelets. It is found that t...
متن کامل