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2024-05-21
Metamaterial-Based Compact UWB Bandpass Filter Using Substrate Integrated Waveguide
By
Progress In Electromagnetics Research Letters, Vol. 120, 1-6, 2024
Abstract
A compact ultra-wideband (UWB) bandpass filter is realized with the combination of dual-split square complementary split ring resonator (DSS-CSRR) and substrate integrated waveguide and is investigated in this paper. Three DSS-CSRRs are carved on the top and bottom layers of SIW to achieve the required passband and enhance the selectivity of the filter. Slots are etched in the ground to improve the return loss characteristics and to lower the insertion loss. The proposed filter offers a fractional bandwidth of 107% (3.1-10.3 GHz) and an insertion loss range of 0.6-1.6 dB in the entire passband. The prototype was fabricated on an FR-4 substrate, with dimensions of 0.3λgL × 1.06λgW. The group delay variation is almost flat over the entire passband. The prototype was fabricated and validated the measured results.
Citation
Senathipathi Udhayanan, and Krishnan Shambavi, "Metamaterial-Based Compact UWB Bandpass Filter Using Substrate Integrated Waveguide," Progress In Electromagnetics Research Letters, Vol. 120, 1-6, 2024.
doi:10.2528/PIERL24031107
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