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Broadside couplings for high-selectivity microstrip filters

✍ Scribed by Alejandro Alvarez Melcón; Juan R. Mosig; Marco Guglielmi

Book ID
102518777
Publisher
John Wiley and Sons
Year
2001
Tongue
English
Weight
395 KB
Volume
30
Category
Article
ISSN
0895-2477

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✦ Synopsis

Abstract

This paper describes a number of broadside‐coupled microstrip structures and their use for the implementation of high‐selectivity multilayered filters. The broadside configuration allows for the introduction of cross couplings between nonadjacent resonators. The cross couplings can then be used to implement transmission zeros that can significantly increase the selectivity of the filters. Furthermore, the investigation shows that the amount of coupling can be considerably increased if the resonators are broadside coupled, thus easily allowing the implementation of broadband filters. Measured results are shown to agree with predictions, thereby fully validating the new structures described. © 2001 John Wiley & Sons, Inc. Microwave Opt Technol Lett 30: 295–302, 2001.

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