Compactwideband Siw Based Bandpass Filter For X, Ku And K Band Applications

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dc.contributor.authorDuraisamy, Tharani
dc.contributor.authorKamakshy, Selvajyothi
dc.contributor.authorKarthikeyan, Sholampettai Subramanian
dc.contributor.authorBarik, Rusan Kumar
dc.contributor.authorCheng, Qingsha S.
dc.date.accessioned2026-11-02T05:20:18Z
dc.date.available2026-11-02T05:20:18Z
dc.date.issued2021-03-23
dc.description.abstractThis paper presents a miniaturized bandpass filter (BPF) with characteristics of wider passband and stopband rejection using substrate integrated waveguide (SIW) technology. Slot loading mechanisms deployed on the upper layer of SIW and defective ground structure (DGS) on the ground plane are utilized to achieve wider passband and stopband respectively. The slots on the top layer along with DGS significantly enhances the selectivity of the filter by generating three transmission zeros (TZs) on the upper side of the passband. The proposed filter is simulated using fullwave simulators and the performance is validated through fabrication and testing of the prototype. The proposed SIW filter exhibits a low insertion loss of 1.52 dB over a wider passband from 9.17 GHz to 20.31 GHz with a 3 dB fractional bandwidth (FBW) of 76%. Further, a wider upper stopband is achieved with the rejection of more than 16 dB in the frequency range of 23 GHz to 40 GHz. The filter provides a flat group delay response of approximately 0.19 ns over the wider passband. The electrical size of the fabricated prototype is 1.05λg* 0.67λg, where λgdenotes the guided wavelength in the dielectric substrate for the designed center frequency of 16 GHz.
dc.identifier.issn12102512
dc.identifier.issnhttps://doi.org/10.13164/re.2021.0288.
dc.identifier.urihttp://nitt.ndl.gov.in/handle/123456789/386
dc.language.isoen
dc.publisherCzech Technical University
dc.relation.ispartofseriesRadioengineering; Vol. 30/ No. 2
dc.titleCompactwideband Siw Based Bandpass Filter For X, Ku And K Band Applications
dc.typeAnimation
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