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 :
