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Communication engineering and systems, telecommunications
A planar Vivaldi antenna structure with a core element is proposed for high gain. Techniques to achieve a significant gain improvement over the full Ka (24-40 GHz) band are implemented; including a frequency-independent excitation method, the introduction of logarithmic ripple on the lateral edges and enclosing the antenna in a dielectric material.
Hoang, M. Ha, et al. “Ka-band Planar Vivaldi Antenna with a Core for High-Gain”, IET Microwaves, Antennas & Propagation, vol. 13, no. 6, pp. 732-735, 2019. DOI: 10.1049/iet-map.2018.5834