Cellular antennas are devices that transmit and receive radio signals for mobile communication. They are essential components of cellular networks, allowing mobile phones and other devices to connect to the network. These antennas can be found on cell towers, rooftops, and even in small cells, providing coverage over various distances. The design of cellular antennas varies based on their purpose and location. Some antennas are omnidirectional, sending signals in all directions, while others are directional, focusing on specific areas. This technology enables efficient communication, supporting voice calls, text messages, and data transfer for users of smartphones and other mobile devices.