volume | PIER Journals

Abstract

The proposed compact dual-band SIW BPF features reconfigurable center frequency and bandwidth, providing two passbands around 2.7 GHz and 4.7 GHz. The lower band targets S-band weather and air-traffic-control radar systems, whereas the upper band covers the 5G NR n79 band, enabling multi-application use in radar and sub-6 GHz 5G wireless communication, utilizing independent reconfigurable methods facilitated by PIN diodes. The suggested design exhibits compact dimensions of 0.21λ_g × 0.48λ_g, a minimal insertion loss of 1.5 dB, and a substantial return loss of 14 dB. Advanced design methodologies, including eigenmode analysis, were utilized to attain precise selectivity and computing of coupling matrix. The engineered filter demonstrates superior performance, with outcomes closely aligning with models, and guarantees little interference with suppression up to 8 GHz. The tuning mechanism provides versatility by independently modifying the operating frequencies of the first and second band, rendering the design very flexible for dynamic wireless communication settings. This study emphasizes a robust and effective answer for contemporary mobile communication systems.

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Dr. Amjad A. Al-Rahmah

Dr. Bashar J. Hamza