The working principle of the 5G Indoor Mushroom Antenna is to use a fixed receiver station with a known location to measure the GPS error. Generally speaking, the ability to obtain this correction information makes the DGPS receiver much more accurate than ordinary receivers.

　　The 5G Indoor Mushroom Antenna is a converter that converts guided waves propagating on a transmission line into electromagnetic waves propagating in an unbounded medium (usually free space), or vice versa. A component used in radio equipment to transmit or receive electromagnetic waves. Engineering systems such as radio communication, broadcasting, television, radar, navigation, electronic countermeasures, remote sensing, radio astronomy, etc., which use electromagnetic waves to transmit information, all rely on antennas to work. In addition, in transmitting energy with electromagnetic waves, the radiation of energy that is not a signal also requires an antenna.

　　Generally, 5G Indoor Mushroom Antennas are reversible, that is, the same antenna can be used as both a transmitting antenna and a receiving antenna. The basic characteristic parameters of the same antenna as transmission or reception are the same. This is the reciprocity theorem for antennas.

　　The 5G Indoor Mushroom Antenna radiates radio waves and receives radio waves. However, it is not radio waves that the transmitter sends into the antenna through the feeder, and the receiving antenna cannot directly send the radio waves to the receiver through the feeder, which must undergo energy conversion. process.