Planar Bidirectional Dual-Sense Circularly Polarized Antenna With Adjustable Orthogonal Polarization Flared Angle

Planar bidirectional dual-sense circularly polarized (CP) antenna with adjustable orthogonal polarization flared angle (OPFA) of $\gamma$ is presented and studied. A y-oriented, rectangular patch element and V-shaped symmetric electric dipole resonating at the first odd, high-order mode are combined. As is seen, two prototypes provided with variable OPFAs of $\gamma= 100\deg$ and 120° have been manufactured and measured to verify the progressive design approach. The low-complexity design method may be beneficial for future reconfigurable antenna developments.