Dawn produces some 2.4 GHz, 5.8 GHz, dual-band Wi-Fi antennas. Including 5g wifi antenna, wifi panel antenna, 5g wifi panel antenna products, etc. They can be placed to use in backhaul systems, outdoor wireless LAN systems, point to point, point to multi-point systems and wireless bridges, etc. The antenna radiates radio waves and receives radio waves. However, it is not radio waves that the transmitter sends to the antenna through the feeder. The receiving antenna cannot send radio waves directly to the receiver through the feeder. The energy conversion process must be performed. Below we take the radio communication equipment as an example to analyze the signal transmission process, and then explain the energy conversion effect of the antenna.