DocumentCode
1196177
Title
On frequency transformation for nonsymmetric bandpass filters
Author
Lin, P.M.
Volume
34
Issue
12
fYear
1987
fDate
12/1/1987 12:00:00 AM
Firstpage
1599
Lastpage
1601
Abstract
When a bandpass filter has specifications that are not geometrically symmetric, the proper choice of the constant 
in the frequency transformation 
has an effect on the selectivity parameter of the transformed lowpass characteristic. In this note we prove that if the objective is to minimize the selectivity parameter, then the best choice of is the product of the two passband edge frequencies. On the other hand, for a bandstop filter, the best choice of in the transformation 
is the product of the two stopband edge frequencies.
in the frequency transformation has an effect on the selectivity parameter of the transformed lowpass characteristic. In this note we prove that if the objective is to minimize the selectivity parameter, then the best choice of is the product of the two passband edge frequencies. On the other hand, for a bandstop filter, the best choice of in the transformation is the product of the two stopband edge frequencies.Keywords
Bandpass filters; Low-pass filters; Band pass filters; Coupling circuits; Electrons; Frequency; Lakes; Low pass filters; Passband; Safety; Switching circuits; Voltage;
fLanguage
English
Journal_Title
Circuits and Systems, IEEE Transactions on
Publisher
ieee
ISSN
0098-4094
Type
jour
DOI
10.1109/TCS.1987.1086082
Filename
1086082
Link To Document