Title :
TEM modelling of comb-line filter bandwidth expansion
Author :
Shapir, Itzhak ; Sharir, V.
Author_Institution :
Microwave Dept., RAFAEL, Haifa, Israel
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;
Conference_Titel :
Electrical and Electronics Engineers in Israel, 1996., Nineteenth Convention of
Conference_Location :
Jerusalem
Print_ISBN :
0-7803-3330-6
DOI :
10.1109/EEIS.1996.566890
