DocumentCode :
924513
Title :
Simplified Equivalent Representations for Multicoupled Lines and Their Application to Filter Design
Author :
Kunieda, Hiroaki
Volume :
28
Issue :
8
fYear :
1980
fDate :
8/1/1980 12:00:00 AM
Firstpage :
852
Lastpage :
857
Abstract :
This paper preaents simplified lumped-type equivalent representations, which are equivalent to multiwire lines in the vicinity of a quarter-wavelength frequency. It is believed that the derived representation can easily be applied to the analysis and the design of coupled-line filters and directional couplers of narrow bandwidths composed of quarter-wavelength strips. In this paper, the general design methad for coupled-line bandpass filters is presented as one of the applications. A new bandpass filter is proposed and the design formulas of the filter are derived by using the design method. Furthermore the range of validity of the derived representations has been checked by showing numerical design examples. They have been found to give excellent results for coupled-line filters of bandwidths up to about 30 percent.
Keywords :
Band pass filters; Bandwidth; Capacitance; Coupling circuits; Design methodology; Directional couplers; Equivalent circuits; Frequency; Microwave filters; Sparse matrices;
fLanguage :
English
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9480
Type :
jour
DOI :
10.1109/TMTT.1980.1130182
Filename :
1130182
Link To Document :
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