Compact, Low-profile, Low-mass, UHF, Folded Shorted Dipole Antenna Array with Dual Circular Polarization

This article focuses on the design and simulation of a dual circularly polarized antenna centered in 400 MHz comprised of an array of four folded-shorted dipoles using sequential rotation over a ground plane. By altering the relative phase difference between the feedings of each element, both circular polarization senses are achieved for the same frequency. This antenna offers a comparable performance to other similar designs, like folded-shorted patches, while minimizing size and weight.