A Millimeter-wave Micro-coaxial Dual-frequency High-gain Omnidirectional CoCo Antenna

Abstract

This paper presents a simulation-based explanation of the mechanism of a micro-coaxial dual-frequency high-gain omnidirectional coaxial collinear (CoCo) antenna in the millimeter-wave band. Firstly, the antenna model is established, and simulation is carried out to extract the amplitude and phase of the current on the surface of the antenna radiator. Then, the dual-frequency and omnidirectional high-gain characteristics of the antenna are analyzed and explained. Finally, the corresponding relationship between the amplitude and phase distribution of the surface current and the dual-frequency characteristics of the antenna is analyzed. The analysis provided in this paper can guide the design of CoCo antennas.