TEM modelling of comb-line filter bandwidth expansion

Author

Shapir, Itzhak ; Sharir, V.

Author_Institution

Microwave Dept., RAFAEL, Haifa, Israel

fYear

1996

Firstpage

48

Lastpage

51

Abstract

Comb-line filters frequently show wider bandwidth than initially synthesized and analyzed. The main cause, as presented, is distortion of the TEM electromagnetic fields at the resonators open ends. These distortions depend on the three dimensional structure of this region, requiring heavy computation for 3-D field analysis. A modification to the classic equivalent network of comb-line filters, which represents this effect is described and formulas to calculate its elements are given, which enables a good approximation of the filter´s actual performance by using inexpensive network analysis tools

Keywords

approximation theory; electromagnetic fields; equivalent circuits; network analysis; passive filters; resonators; 3D field analysis; TEM electromagnetic field distortion; TEM modelling; bandwidth expansion; combline filters; equivalent network; filter performance approximation; inexpensive network analysis tools; resonators; three dimensional structure; Bandwidth; Capacitance; Capacitors; Electromagnetic fields; Microwave filters; Mutual coupling; Network synthesis; Performance analysis; Resonator filters; Senior members;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical and Electronics Engineers in Israel, 1996., Nineteenth Convention of

Conference_Location

Jerusalem

Print_ISBN

0-7803-3330-6

Type

conf

DOI

10.1109/EEIS.1996.566890

Filename

566890