Short-Range Transmission Improvement by Dog-Bone Cross-Slot Feed in Radial Line Slot Antenna

Abstract

A radial line slot antenna (RLSA) was proposed as a candidate for short-range transmission. The introduction of the dog-bone cross-slot feed improves the field distribution of the rotating mode excited in the radial waveguide. The method of the dog-bone cross-slot based on eigenmode analysis is presented to radiate the rotating mode at the design frequency. The short-range transmission improvement between two antennas is demonstrated experimentally.