A Low-Profile Mm-Wave All-Around Antenna for WGM Applications

This study examines the impact of whispering gallery mode resonant field diffraction emission on local inhomogeneities in disk dielectric resonators. There is evidence to support the effective radiation of electromagnetic energy in the azimuthal angles 0°–360°. The goal of this contribution is to radiate all-around antennas at Mm-wave frequencies by utilizing the characteristics of leaky-wave antennas. It is discovered that small imperfections placed equidistantly on the working surface of a disk dielectric resonator may be used to produce a strong electromagnetic emission in the azimuthal angles of 0°–360°. The constructed segmented dielectric resonator has been shown to radiate at azimuthal angles of 0°–360° using a multi-lobe radiation pattern. Furthermore, it attains a high gain of 12 dBi across the board in the mm-wave frequency range. Furthermore, new opportunities for developing all-around antennas with a multi-lobe radiation pattern and a high gain are presented by the dielectric resonators with a working surface in the shape of a diffraction grating. This opens up a wide range of applications at mm-wave frequencies.