Vol. 118

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2022-02-06

A New Tunable Dual-Mode Dual-Band Square Cavity SIW Bandpass Filter

By Mohammed Fadihl Abbas and Ali J. Salim
Progress In Electromagnetics Research C, Vol. 118, 113-123, 2022
doi:10.2528/PIERC21120306

Abstract

A tunable dual-mode dual-band square cavity substrate integrated waveguide (SIW) bandpass filter is proposed. Metalized via-holes are inserted into the center of the cavity as perturbations to move and control the four resonant modes to create the dual passband filter. The first passband is formed by the perturbed TE201 and TE202 modes, while the second passband is formed by the perturbed TE301 and TE302 modes. Moreover, moving the perturbed via-holes on the SIW cavity allows the first passband to be tuned separately while the second passband is almost fixed. A dual-band filter prototype with frequencies of 17 GHz and 19.36 GHz and three transmission zeros (TZs) has been designed, fabricated and measured. The measured and simulated results are in good agreement, confirming the proposed dual-band filter design concept.

Citation


Mohammed Fadihl Abbas and Ali J. Salim, "A New Tunable Dual-Mode Dual-Band Square Cavity SIW Bandpass Filter," Progress In Electromagnetics Research C, Vol. 118, 113-123, 2022.
doi:10.2528/PIERC21120306
http://jpier.org/PIERC/pier.php?paper=21120306

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