A 2.4 GHz PCB antenna is a compact, integrated antenna designed for wireless communication devices operating in the 2.4 GHz frequency band, commonly used in Wi-Fi, Bluetooth, and Zigbee applications. It is directly printed or etched onto a printed circuit board (PCB), making it cost-effective and space-efficient. These antennas are popular in IoT devices, wearables, and consumer electronics due to their small form factor and ease of integration. The design typically involves a trace pattern optimized for impedance matching and radiation efficiency. While offering moderate gain, they provide reliable performance for short to medium-range wireless communication.