Miniaturized Substrate-Integrated Waveguide Bandpass Filter Using Symmetric Vertical Slots

Author(s)	Venmathi A R, Murugesan K, Srividhya K, Shally S P
Country	India
Abstract	A substrate-integrated waveguide (SIW) bandpass ﬁlter designed by introducing a vertical slot in the central metallic septum of the SIW is proposed in this paper. The input/output arrangement analysis and the stub variation in the port termination are also demonstrated, resulting in a wider bandwidth and better performance characteristics. The SIW bandpass filter (BPF) has a passband in the range of 18.23 GHz - 28.74 GHz depending on the stub variation arrangement with the central symmetric slot synthesized on a 0.5 mm thick planar RO 3003 substrate using a periodically arranged metal via holes. The proposed filter has excellent wide stopband rejection characteristics of -16 dB from 30 GHz to 40 GHz. Furthermore, the experimentally measured S-parameters of the filter are in good agreement with the simulated results; thus, the performance of the filter is validated.
Keywords	Stopband Rejection, Bandpass Filter, S-Parameters, Symmetric Slots, Substrate- Integrated Waveguide
Field	Engineering
Published In	Volume 6, Issue 5, September-October 2024
Published On	2024-10-31
Cite This	Miniaturized Substrate-Integrated Waveguide Bandpass Filter Using Symmetric Vertical Slots - Venmathi A R, Murugesan K, Srividhya K, Shally S P - IJFMR Volume 6, Issue 5, September-October 2024. DOI 10.36948/ijfmr.2024.v06i05.29722
DOI	https://doi.org/10.36948/ijfmr.2024.v06i05.29722
Short DOI	https://doi.org/g8p2r7

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