company news about The role and classification of antennas

The radio frequency signal power output by the radio transmitter is transmitted to the antenna through the feeder (cable), and radiated by the antenna in the form of electromagnetic waves. After the electromagnetic wave arrives at the receiving location, it is followed by the antenna (only a small part of the power is received) and sent to the radio receiver through the feeder. It can be seen that the antenna is an important radio device that transmits and receives electromagnetic waves. Without an antenna, there is no radio communication.

There are many varieties of antennas for use in different situations such as different frequencies, different uses, different occasions, and different requirements. For many types of antennas, it is necessary to properly classify them: according to their purpose, they can be divided into communication antennas, TV antennas, radar antennas, etc.; according to the working frequency band, they can be divided into shortwave antennas, ultrashort wave antennas, microwave antennas, etc.; The directivity classification can be divided into omnidirectional antennas, directional antennas, etc.; according to the shape classification, it can be divided into linear antennas, planar antennas, etc.; and so on.