Design and analysis of circular MPA using multi-layer substrate sandwich for bandwidth enhancement

A Miniaturized Multi-layer Microstrip Antenna for Linear Wireless Sensor Network Monitoring Systems

“…In literature, there are proposed methods that enhance the gain of microstrip antennas, most of which are based on increasing the antenna volume [2]. This is achieved by performing modifications to the geometry of the antenna, which increases the volume under the conductive patch.…”