Synthesis of lossy reflection-mode prototype networks with symmetrical and asymmetrical characteristics

Author

Fathelbab, W.M. ; Hunter, I.C. ; Rhodes, J.D.

Author_Institution

Filtronic Comtek UK Ltd., Shipley, UK

Volume

146

Issue

2

fYear

1999

fDate

4/1/1999 12:00:00 AM

Firstpage

97

Lastpage

104

Abstract

A modified synthesis procedure for lossy reflection-mode prototype networks is presented. The resultant one-port filters are composed of a cascade of Brune or Triplet sections realising symmetrical and asymmetrical transfer functions, respectively. The Brune sections of symmetrical reflection functions have progressively decreasing resonator Q and the prototypes are suitable for dual-mode realisation. Tables of element values are provided for elliptic function filters up to degree six. Numerical examples are also presented for both types of transfer function

Keywords

Q-factor; cascade networks; microwave filters; network synthesis; network topology; resonator filters; transfer functions; Brune sections; Triplet sections; asymmetrical characteristics; asymmetrical transfer function; cascade functions; dual-mode realisation; element values; elliptic function filters; lossy reflection-mode prototype networks; microwave filters; modified synthesis procedure; network synthesis; network topology; one-port filters; passive filters; resonator Q; symmetrical characteristics; symmetrical reflection functions; symmetrical transfer function;

fLanguage

English

Journal_Title

Microwaves, Antennas and Propagation, IEE Proceedings

Publisher

iet

ISSN

1350-2417

Type

jour

DOI

10.1049/ip-map:19990207

Filename

785314