Full wave analysis of probe-fed superstrate-loaded rectangular microstrip antennas on a cylindrical body

Cylindrical-rectangular microstrip antennas have received much attention due to their major advantage of conformability. In this study, the problem of the radiation pattern and input impedance of a superstrate-loaded cylindrical-rectangular microstrip antenna excited by a probe is investigated. This study is performed by using a full-wave analysis and a moment method calculation. In the moment method calculation, the sinusoidal basis functions without considering the edge singularity are used to expand the unknown patch current. To ensure the correctness of the theoretical results, the numerical convergence of the moment method calculation is tested, and the convergent solutions are also compared with the measured data for the case of no superstrate presence.