Practical Design and Implementation Method for Asymmetric-Response Post-Loaded Substrate-Integrated Waveguide Filters
- Authors
- Lee, Sanggu; Nam, Seunggoo; Lee, Juseop
- Issue Date
- 2020
- Publisher
- IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
- Keywords
- Couplings; Filtering theory; Transmission line matrix methods; Resonators; Frequency response; Design methodology; Substrates; Coupling; filter; resonator; substrate-integrated waveguide
- Citation
- IEEE ACCESS, v.8, pp.101528 - 101538
- Indexed
- SCIE
SCOPUS
- Journal Title
- IEEE ACCESS
- Volume
- 8
- Start Page
- 101528
- End Page
- 101538
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/58953
- DOI
- 10.1109/ACCESS.2020.2998488
- ISSN
- 2169-3536
- Abstract
- This paper presents a practical method for implementing a post-loaded substrate-integrated waveguide (SIW) filter producing an asymmetric response with a pair of near-band transmission zeros. More specifically, we present a practical frequency-dependent coupling structure for post-loaded SIW resonators for implementing an asymmetric response. By virtue of the proposed coupling design methods, the roll-offs in the upper and lower stopbands can be readily controlled to be different from each other. In other words, the roll-off in a stopband can be made to be steeper than the one in the other stopband by means of using the proposed design method for coupling structure. More importantly, we propose a useful approach to swap the two stopband responses of an asymmetric-response filter. In other word, this paper shows a practical method to laterally reverse an asymmetric response. For demonstration, 1 symmetric-response and 2 asymmetric-response fourth-order SIW filters have been designed using the presented frequency-dependent coupling structures.
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Collections - Graduate School > Department of Computer Science and Engineering > 1. Journal Articles
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