DocumentCode :
3561056
Title :
Synthesis of Cross-Coupled Triple-Passband Filters Based on Frequency Transformation
Author :
Di, Hao ; Wu, Bian ; Lai, Xin ; Liang, Chang-Hong
Author_Institution :
Nat. Key Lab. of Antennas & Microwave Technol., Xidian Univ., Xi´´an, China
Volume :
20
Issue :
8
fYear :
2010
Firstpage :
432
Lastpage :
434
Abstract :
A synthesis method is presented for triple-passband filters. The proposed method is based on a frequency transformation from the normalized frequency domain to the actual frequency domain. A novel triple-passband filter topology with cross coupling is obtained, which consists of admittance inverters and parallel resonators. The coupling coefficients and the external quality factors can be calculated analytically. To validate the theory, a triple-passband filter is designed and fabricated using microstrip structure. The theoretical response meets the specifications very well, and the measured result shows a good agreement with the simulated one.
Keywords :
band-pass filters; microstrip filters; network synthesis; network topology; resonator filters; admittance inverters; cross coupling; cross-coupled triple-passband filters; frequency transformation; microstrip structure; normalized frequency domain; parallel resonators; synthesis method; triple-passband filter topology; Cross-coupled filter; frequency transformation; synthesis method; triple-passband filters;
fLanguage :
English
Journal_Title :
Microwave and Wireless Components Letters, IEEE
Publisher :
ieee
Conference_Location :
6/7/2010 12:00:00 AM
ISSN :
1531-1309
Type :
jour
DOI :
10.1109/LMWC.2010.2049829
Filename :
5481960
Link To Document :
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