Abstract— We propose a design method for IIR low-pass differentiators under a specified maximum pole radius constraint. In the proposed method, we express the design problem in a quadratic form with respect to the coefficients of the transfer function. Since the cost function includes a weighting function, the frequency-weighting can be specified in the pass-band. Also, a linear phase property ...

This paper is concerned with design of cascading CIC filter and FIR filter to improve the passband droop and stopband attenuation for decimation filter. Decimation filter has wide application in both analog and digital systems for data rate conversion as well as filtering. We have three class of filters FIR, IIR and CIC filters. IIR filters are simpler in structure, but not satisfy linear phase...

In signal processing it is often required to have multiple-notch filters which simultaneously possess a very selective magnitude response and a transient response of short duration. Multiple-notch filters are usually used to remove the powerline hum and its harmonics. It is known, that sharper notches are obtained by either using more coefficients in FIR filters, or by placing the pole closer t...

In this paper, a new optimization method for the design of nearly linear-phase two-dimensional infinite impulse (2D IIR) digital filters with separable denominator is proposed. A framework 2D IIR formulated as nonlinear constrained problem where group delay deviation in passband minimized under prescribed soft magnitude constraints and hard stability requirements. To achieve goal, sub-level set...

ABSTRACT In this paper we present a design method for optimal energy compaction IIR filters, where the numerator and denominator may have different degrees. The design is performed via iterative relaxations, where the numerator is optimized given the denominator, followed by optimization of denominator given the numerator. The two optimization problems involved are solved using semidefinite pro...

In this paper, we propose an architecture synthesis methodolog ‘ to realize cascaded Infinite Impulse Response (IIRJfilter in Table Look Up (TLU) Field Progmmmable Gate A m y s (FPGA). The synthesis procedure involves a systematic tmnsfomation of the Dependance Graph (DG) corresponding to the cascaded IIR filter t o a Papelined Fized Full Size A+ my (PFFSA). We ofler an implementation of a casc...

In this paper an improvement of a Genetic algorithm using in constructing an IIR digital filter is presented. The aim of our improvement are reconstruction of genetic operators and new procedure for initial population selecting applied on a filter design problem. The result of the paper is modified genetic algorithm which allow us to find the best IIR filter among all filters with a requaired t...

In this paper, we present the application of the Elliptic Minimal Q-Factors (EMQF) subfilters in constructing IIR multirate filters. We show that using EMQF subfilters, efficient implementations are reached for the sampling rate conversion systems, multistage filtering, and tree structured IIR filter banks. It is demonstrated through examples that the proper use of EMQF subfilters provides effi...

block recursion,” IEEE Trans. Audio Electroacowt., vol. AU-18, DD. 169-176. June 1970. [3] Charles S. B’urrus, “Block implementation of digital filters,” ZEEE Truns. Circuit Theov, vol. CT-18, pp. 697-701, Nov. 1971. [4] -, “Block realization of digital filters,” IEEE Truns. Audio Electroacoust., vol. AU-20, pp. 230-235, Oct. 1972. [5] R. Gnanasekaran and Sanjit K. Mitra, “A note on block imple...

This article describes a new kind of processing chain based on a nonuniform sampling scheme provided by a level-crossing ADC. The chain implements IIR filters which process directly the non-uniform samples without resampling in a regular scheme. The non-uniformity in the sample times leads to choose a state representation for the filters. The stability is studied and the performances of various...