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Abstract
This letter presents a design of a linear phase microwave bandpass filter. The filter is composed of four resonators arranged in the quadruplet topology. Making the cross and one direct coupling dispersive gives additional design flexibility. The first advantage of using frequency-dependent couplings is the possibility to chose an arbitrary location of a pair of complex transmission zeros (TZs) in the s-domain. The second one is the presence of an additional imaginary transmission zero that improves the filter selectivity. We provide a proof-of-concept design of a filter using substrate integrated waveguide (SIW) technology. The frequency-dependent couplings are implemented in SIW as a composition of both: an inductive part realized in a form of an H-plane iris and a capacitive part realized as a grounded coplanar waveguide (GCPW). The measured filter characteristics prove the validity of the model.
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- Category:
- Articles
- Type:
- artykuł w czasopiśmie wyróżnionym w JCR
- Published in:
-
IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS
no. 24,
edition 1,
pages 32 - 34,
ISSN: 1531-1309 - Language:
- English
- Publication year:
- 2014
- Bibliographic description:
- Szydłowski Ł., Leszczynska N., Mrozowski M.: A Linear Phase Filter in Quadruplet Topology With Frequency-Dependent Couplings// IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS. -Vol. 24, iss. 1 (2014), s.32-34
- DOI:
- Digital Object Identifier (open in new tab) 10.1109/lmwc.2013.2288178
- Verified by:
- Gdańsk University of Technology
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