DocumentCode
1075420
Title
Design of Tri-Band Filters With Improved Band Allocation
Author
Chen, Bo-Jiun ; Shen, Tze-Min ; Wu, Ruey-Beei
Author_Institution
Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan
Volume
57
Issue
7
fYear
2009
fDate
7/1/2009 12:00:00 AM
Firstpage
1790
Lastpage
1797
Abstract
A new design method for tri-band filters with improved band allocation is proposed. The design concept treats different band allocations with different methodologies. For the bands assigned to adjacent frequency regions, transmission zeros are introduced to split one of the single bands into two. For the bands that are assigned separately, different harmonic modes of stepped-impedance resonators are used to realize different passbands. Two design examples with different responses and band allocations are given, and were verified by experiments, as well as full-wave simulation results.
Keywords
frequency allocation; poles and zeros; resonator filters; band allocation; stepped-impedance resonators; transmission zeros; tri-band filters; Band allocation; coupling matrix; stepped-impedance resonators (SIRs);
fLanguage
English
Journal_Title
Microwave Theory and Techniques, IEEE Transactions on
Publisher
ieee
ISSN
0018-9480
Type
jour
DOI
10.1109/TMTT.2009.2022888
Filename
5075600
Link To Document