A novel five-pole microstrip cascade quadruplet filter

A five-pole cascade quadruplet microstrip filter is presented. The source and load of the filter couple to two resonators respectively, which establishes two independent quadruplet blocks to control two independent pair of finite transmission zeros. The proposed tuning fingers are introduced to effe...

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Bibliographic Details
Main Authors: Ching-Ku Liao, Chi-Yang Chang
Format: Conference Proceeding
Language:English
Subjects:
Band pass filters
Couplings
Cross-coupled
Filtering theory
Fingers
Frequency
Magnetic separation
microstrip filter
Microstrip filters
Passband
Propagation losses
Resonator filters
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Description
Summary:A five-pole cascade quadruplet microstrip filter is presented. The source and load of the filter couple to two resonators respectively, which establishes two independent quadruplet blocks to control two independent pair of finite transmission zeros. The proposed tuning fingers are introduced to effectively control the strength of cross couplings. Compared to the eight-pole CQ filter, the proposed five-pole CQ filter provides an alternative choice of the filter with two pairs of transmission zeros but has less passband insertion loss. Both simulated and experimental results are given.
ISSN:2165-4727
2165-4743
DOI:10.1109/APMC.2005.1606285