Used for multi-band performance in compact metal-frame devices.
Common for compact devices due to their low profile and ease of matching. Antennas for portable devices
Antenna design for portable devices has evolved from bulky external components to highly integrated internal systems that support multi-band operations such as 5G, Wi-Fi, and GPS. A "complete paper" on this topic typically covers the transition from simple monopole antennas to complex systems and millimeter-wave (mm-wave) arrays . Key Antenna Types in Portable Devices Antennas for portable devices
Frequently used in wearable devices and for satellite communication due to their planar nature. Primary Design Challenges Antennas for portable devices