Ku-Band Compact Circular Polarized Patch Antenna for Cubesat Applications

In this article, a circularly polarized patch antenna is proposed. The suggested antenna consists of a single patch as its central element. In addition, two parasitic patches are inserted and the corners of the center element are truncated. The effects of these methods on bandwidth, reflection coefficient, radiation, pattern, axial ratio, and gain are analyzed. The final simulation results indicate that the proposed antenna operates effectively over the frequency range of 12.5-16 GHz. In particular, it achieves circular polarization over 13.6-14.5 GHz, indicating its ability to transmit and receive signals without polarization loss. Furthermore, the antenna demonstrates an impressive average realized gain of 8 dBi, highlighting its efficiency in radiating power and enhancing signal strength within the designated Ku-band.