Reduction of Mutual Coupling and Return Loss in Microstrip Array Antennas Using Concave Rectangular Patches

<table>Simulated E-field radiation pattern for (a) ordinary rectangular patch and (b) concave patch array antennas.</table>

International Journal of Microwave Science and Technology

Figure 5: Reduction of Mutual Coupling and Return Loss in Microstrip Array Antennas Using Concave Rectangular Patches 