Abstract
A new wideband omni-directional compact rectangular ring dielectric resonator antenna (RRDRA) fused with slotted bevel shaped patch antenna is presented for the ultra-wideband (UWB) applications. The RRDR (rectangular ring dielectric resonator) is employed to generate lower order radiating modes with merge with the modes of patch to obtain high impedance bandwidth in UWB region. Further, RRDR use led to reduction in overall conductor loss to achieve high radiation efficiency. The proposed RRDRA structure achieved an impedance bandwidth covering the frequency range from 2.6–15.6 GHz, or ∼142%. The measured results show that the proposed DRA provides peak measured gain of 6.2 dBi and radiation efficiency of 90% at resonant frequency 6.3 GHz with stable omni-directional monopole like radiation patterns with low cross-polarization. The proposed antenna has a short ground plane of size 40 × 40 × 11.6 mm3 or ∼0.34λ 0 × 0.34λ 0 × 0.10λ 0 at 2.6 GHz.
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Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.
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Research funding: None declared.
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Conflict of interest statement: The authors declare no conflicts of interest regarding this article.
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