Circular Polarized Rectangular Dielectric Resonator Antenna using single probe feeds

A state-of-art review on performance improvement of dielectric resonator antennas

“…For case of single point feed, the shape of the resonator plays the crucial role to generate spatially orthogonal modes, while in multipoint feed, this can be generated by the feeding network and independent of the shape of the dielectric resonator . In case of DRA, the research on only circular polarization and circular polarization with other charateristics are quite remarkable.…”

“…Haraz et al have excited a half‐cylindrical DRA with a printed monopole along with a finite truncated ground plane to ensure > 35% AR bandwidth over 5.4–7.65 GHz. Malekabadi et al have conceived CP (AR < 3dB) in a two differently chopped rectangular DRA fed by coaxial probe, by splitting the fundamental mode into two near‐degenerate orthogonal resonant modes.…”

Aperture coupled Dielectric Resonator Antenna design with flat reflector

“…For compact size, high permittivity is used while for wide bandwidth low permittivity is used [1][2][3][4][5]. DRA can be excited by different feeding techniques such as probes [6][7][8][9], slot [10][11][12][13], microstrip lines [14][15][16], dielectric image guides [17][18][19], and co-planar waveguides [20][21][22]. Different feeding techniques make DRA compatible with a wide range of technologies.…”

Single Feed Aperture-Coupled Wideband Dielectric Resonator Antenna with Circular Polarization for Ku-Band Applications

“…Dielectric resonator antennas (DRAs) were first discovered in 1983 by Long et al, and since then they have been widely studied [1]. Their inherent features of high radiation efficiency, ease of excitation, compactness, and ability to obtain radiation patterns using different excitation modes offer much to an antenna application [2]. Furthermore, the shape of a DRA can be custom, resulting in favorable operating modes or polarizations.…”