EXTENDED REMEZ ALGORITHMS FOR FILTER AMPLITUDE AND GROUP DELAY APPROXIMATION

被引：8

作者：

HENDERSON, RK

PING, L

SEWELL, JI

机构：

[1] UNIV MELBOURNE, DEPT ELECT & ELECTR ENGN, PARKVILLE, VIC 3052, AUSTRALIA

[2] UNIV GLASGOW, DEPT ELECTR & ELECT ENGN, GLASGOW G12 8QQ, SCOTLAND

来源：

IEE PROCEEDINGS-G CIRCUITS DEVICES AND SYSTEMS | 1991年 / 138卷 / 03期

关键词：

MATHEMATICAL TECHNIQUES; FILTER AMPLITUDE; GROUP DELAY FUNCTIONS;

D O I：

10.1049/ip-g-2.1991.0050

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Various Remez-type algorithms for the computation of rational filter functions of a general form are proposed. They allow filter amplitude and group delay functions to be arbitrarily shaped and tapered. Such functions can be applied to predistort for undesirable effects in communication systems such as sinc (x), transmission line weighting or distortion due to nonideal components. High-order touch points are introduced as a generalisation of the concept of maximum flatness. They are used to trade off between the amplitude, group delay and passive sensitivity properties of a filter. The high-order touch points can be used directly to design a passive ladder prototype by an iterative algorithm.

引用

页码：289 / 300

页数：12

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