A Study of a Laminated Band Elimination Filter Comprising Coupled-Line Resonators Using Low Temperature Co-Fired Ceramics

Hideyuki MIYAKE  Shoichi KITAZAWA  Toshio ISHIZAKI  Koichi OGAWA  Ikuo AWAI  

Publication
IEICE TRANSACTIONS on Electronics   Vol.E82-C   No.7   pp.1104-1109
Publication Date: 1999/07/25
Online ISSN: 
DOI: 
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Issue on Microwave and Millimeter Wave Technology)
Category: Passive Devices and Circuits
Keyword: 
band elimination filter,  coupled-line resonators,  laminated filter,  LTCC,  

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Summary: 
Coupling effects between resonators on a laminated Band Elimination Filter (BEF) is studied. The coupling degrades the filter attenuation performance. A new equivalent circuit of coupled-line BEF with loaded capacitors is investigated. The performance is simulated and the improvement by staggered resonators is confirmed. An experimental filter made of Low Temperature Co-fired Ceramics (LTCC) is constructed. It shows good performance.