Performance evaluation and analysis of ring loaded patch antennas [articol]

Abstract

The paper presents a detailed investigation on various types of circular ring patch antennas and their importance in Wireless Communications especially under satellite Frequency Applications. The main focus is considered on the typical resonant frequencies, design parameters, theoretical foundations on shape, equivalent circuits, various applications of the ring patch antennas. Simulation and comparison of different structures of patch with annular ring patch was also presented to justify the investigation.