A dual-band antenna is a device that can both send and receive in different frequency bands. These antennas are designed for a range of uses, it’s key selling point is how it can operate on different frequencies individually or simultaneously. (Depending on the capabilities of the individual embedded antenna.)
TE Connectivity’s Dual Band PCB Antenna is a small and lightweight dual-band PCB antenna for Bluetooth, ZigBee, and Wi-Fi applications that can operate at 2.4 and 5Ghz. The design and purpose of this device allows for it to operate according to different IEEE standards and expands its range of communication abilities beyond just WiFi.