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Article

Simplified Modal-Cancellation Approach for Substrate-Integrated-Waveguide Narrow-Band Filter Design

1
Computer, Electrical and Mathematical Science and Engineering (CEMSE) Division, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia
2
Department of Electrical and Electronics Engineering, University of Jeddah, Jeddah 21589, Saudi Arabia
*
Author to whom correspondence should be addressed.
Electronics 2020, 9(6), 962; https://doi.org/10.3390/electronics9060962
Received: 18 May 2020 / Revised: 2 June 2020 / Accepted: 6 June 2020 / Published: 9 June 2020
Current substrate-integrated-waveguide (SIW) filter design methodologies can be extremely computational and time-inefficient when a narrow-band filter is required. A new approach to designing compact, highly selective narrow-band filters based on smartly positioned obstacles is thus presented here. The proposed modal-cancellation approach is achieved by translating or eliminating undesired modes within the frequency of interest. This is performed by introducing smartly located obstacles in the maxima and nulls of the modes of interest. This approach is different from the traditional inverter technique, where a periodic number of inductive irises are coupled in a ladder configuration to implement the desired response of an nth-order filter, and significantly reduces the complexity of the resulting filter structure. Indeed, the proposed method may be used to design different filters for several frequency bands and various applications. The methodology was experimentally verified through fabricated prototypes. View Full-Text
Keywords: cavities; communications; filters; substrate integrated waveguide; wave propagation cavities; communications; filters; substrate integrated waveguide; wave propagation
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MDPI and ACS Style

Celis, S.; Farhat, M.; Almansouri, A.S.; Bagci, H.; Salama, K.N. Simplified Modal-Cancellation Approach for Substrate-Integrated-Waveguide Narrow-Band Filter Design. Electronics 2020, 9, 962. https://doi.org/10.3390/electronics9060962

AMA Style

Celis S, Farhat M, Almansouri AS, Bagci H, Salama KN. Simplified Modal-Cancellation Approach for Substrate-Integrated-Waveguide Narrow-Band Filter Design. Electronics. 2020; 9(6):962. https://doi.org/10.3390/electronics9060962

Chicago/Turabian Style

Celis, Sebastian, Mohamed Farhat, Abdullah S. Almansouri, Hakan Bagci, and Khaled N. Salama 2020. "Simplified Modal-Cancellation Approach for Substrate-Integrated-Waveguide Narrow-Band Filter Design" Electronics 9, no. 6: 962. https://doi.org/10.3390/electronics9060962

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