?-Shape slotted microstrip patch antenna for ZigBee applications

A π-shape slotted microstrip patch antenna is presented in this paper for 2.4 GHz band applications. These applications include ZigBee and Bluetooth. Recently, these applications have been appreciated and became essential for daily use in industrial and home automation in small areas because of their low power requirement for operation and long battery life. The proposed antenna is constructed on an FR-4 epoxy substrate with thickness of 1.6 mm and ε_r =4.4. The proposed antenna operates from 2.3 GHz to 2.48GHz with good omnidirectional radiation patterns, its narrowband impedance bandwidth protect it from interference problem from other applications in ISM band. Proposed antenna has compact size of 24×33mm². Proposed antenna has advantages in simple design, narrow bandwidth, and compact in size and easy in fabrication. The measured result is in good agreement with simulated one.