A base station antenna is a fundamental component in a wireless communication network. These antennas are base station mounted on towers to provide cellular connectivity to users. These antennas are used to cover a single frequency band or multiple frequency bands.

Plate antenna is a kind of common wireless communication antenna, which is widely used in wireless communication system with the following main functions: Signal radiation: plate antennas can convert electrical signals into electromagnetic wave signals and radiate them into space. These radiated electromagnetic wave signals can transmit and receive information to achieve wireless communication. Directional radiation: Plate antenna can produce directional radiation, i.e., the radiated power is concentrated in a specific direction. By adjusting the design parameters of the plate antenna, such as the shape, size and distribution of the radiating elements, a specific directionality of radiation can be realised, which improves the efficiency and reliability of signal transmission. Gain enhancement: Plate antennas can provide high antenna gain. Antenna gain is the increase in radiated power relative to a reference antenna (e.g., an equivalent omnidirectional radiating antenna). Through proper design and optimisation, plate antennas can achieve higher gain, thus enhancing the transmission distance and coverage of the signal. Multi-antenna system: The plate antenna can be used in combination with other antennas to form a multi-antenna system. Multi-antenna system can improve the reliability and capacity of wireless signal by using the space diversity effect between antennas. Through the reasonable arrangement of plate antenna, it can achieve spatial multiplexing, beam fouling and other technologies, so as to improve the performance of wireless communication system. In conclusion, the functions of plate antenna include signal radiation, directional radiation, gain enhancement and construction of multi-antenna system. These functions make the plate antenna an important component widely used in wireless communications.