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Author

H. Ja'afar

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Open access Sep 2026

Beam Reconfigurable Antenna Integrated with Passive Transmissive FSS Superstrate for Beam-Tilt Enhancement

This work presents a 360° beam reconfigurable circular patch antenna integrated with a passive transmissive Frequency Selective Surface (FSS) to enhanced beam tilt performance at 3.5 GHz. The baseline antenna achieved full azimuthal coverage, but the beam tilt is limited to approximately ±24°-29° due to restricted phas...

Rabiatuladawiah Akhbar, H. Ja'afar, N. A. Abd Rahman et al. · 0 citations
Open access Sep 2026

Gain-Bandwidth Trade-off Reduction in an H-Shaped Dielectric Resonator Antenna Using Coplanar Substrate Integrated Waveguide Feeding for 5G Application

Due to the simplicity of the geometry, Rectangular Dielectric Resonator Antennas (RDRAs) are widely used, and they provide more flexibility in controlling the resonant frequency by varying the length, width, and height of the antenna. The traditional RDRAs, however, usually have a trade-off between gain and impedance b...

H. Ja'afar, R. Abdullah, M. H. Jamaluddin et al. · 0 citations

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