Directional filters on coupled nonuniform TEM transmission lines

Author

Beljaev, Alexander V. ; Krenitskiy, Alexander P. ; Meschanov, Valery P. ; Shikova, Ludmila V.

Author_Institution

Central Inst. of Meas. Equip., Saratov, Russia

Volume

52

Issue

1

fYear

2004

Firstpage

133

Lastpage

138

Abstract

The problems of synthesizing harmonic filters on coupled nonuniform TEM transmission lines have been solved. Two formulations of the synthesis problems with the application of Chebyshev approximation criterion over the passband have been considered. In the first formulation, the coupling region length was fixed, while in the second one, it was included into the varied parameters. Experimental investigation of the harmonic filter was carried out. A general analysis of the results obtained is also presented.

Keywords

Chebyshev approximation; coupled transmission lines; directional couplers; microwave filters; waveguide filters; Chebyshev approximation; air filling; amplitude-frequency performance; coupled nonuniform TEM transmission lines; coupling region length; directional coupler; directional filters; four-port microwave device; harmonic filter synthesis problems; optimization; optimum function; Chebyshev approximation; Conductors; Couplings; Distributed parameter circuits; Frequency; Harmonic filters; Passband; Power transmission lines; Transmission line theory; Transmission lines;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/TMTT.2003.821261

Filename

1262684