A modified Chebyshev bandpass filter with attenuation poles in the stopband

Author

Lim, Jeong-Soo ; Park, Dong Chul

Author_Institution

Agency for Defense Dev., Taejon, South Korea

Volume

45

Issue

6

fYear

1997

fDate

6/1/1997 12:00:00 AM

Firstpage

898

Lastpage

904

Abstract

This paper describes a design method of a modified Chebyshev bandpass filter with attenuation poles in the stopband. The insertion of attenuation poles into resonators in the authors´ bandpass-filter design is accomplished by connecting a lumped inductor or capacitor in series with a shunt-type coaxial transmission-line resonator. The inserted poles which are distributed over the stopband can be chosen such that the insertion loss of the filter has equiripple characteristic and maximum attenuation in the stopband with the given number of attenuation poles. The modified Chebyshev bandpass filter designed by this method can be effectively used in diplexer design

Keywords

Chebyshev filters; UHF filters; band-pass filters; equivalent circuits; linear network synthesis; passive filters; poles and zeros; resonator filters; attenuation poles; design method; diplexer design; equiripple characteristic; insertion loss; modified Chebyshev bandpass filter; shunt-type coaxial transmission-line resonator; stopband inserted poles; Attenuation; Band pass filters; Capacitors; Chebyshev approximation; Coaxial components; Design methodology; Inductors; Insertion loss; Joining processes; Transmission lines;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/22.588597

Filename

588597