Design and Analysis of an Omnidirectional Multi-Range Circularly Polarized Printed Patch Antenna

In nowadays communications, the reliability of the entire communication system is directly related to the performance of the antenna involved in such systems. The aim of this paper is to design a novel compact printed patch antenna capable of providing omnidirectional radiation pattern and resonating at multiple specific frequency bands with high level of radiation efficiency and lower cost. On the top of that, for better performance especially in bad weather conditions, the proposed antenna would provide circular polarization and omni-directionality of the radiation pattern by simply inserting short-circuited conducting wires known as “vias” within the dielectric substrate of the patch. Based on CST software simulations, a proper selection of the number, dimensions and locations of the vias within the substrate has led to significantly competent electrical parameters of the designed antenna.