Feasibility Study of K-band E-Shaped Circularly Polarized Microstrip Patch Antenna Elements for SATCOM Receive Arrays

In this paper, we demonstrate that a single and a rotated dual E-shaped microstrip patch antenna elements with asymmetric slots can produce a circularly polarized (CP) radiation pattern at two desired frequencies at K-band. The rotated dual E-shaped patch element is ideally suited for constructing a K-band CP receive array antenna for communications satellite that operates at dual frequencies.