Wireless electromagnetic wave constant-power transmitting and charging device

Abstract

The invention discloses a wireless electromagnetic wave constant-power transmitting and charging device. The transmitting device comprises a single chip microcomputer, a radio frequency module, an operational amplifier, an automatic gain control module, a first filter, a power amplifier, a power coupler, a power detection module, a second filter and a radio frequency antenna. According to the invention, a certain amount of output power of the power amplifier is coupled through the coupling end of the power coupler and fed back to the power detection module to obtain sampling voltage, the operational amplifier compares the sampling voltage with the reference voltage to obtain the adjusting voltage; the power amplifier conducts negative feedback adjustment on the output power of the power amplifier according to the adjusting voltage so as to allow output power to reach a preset value and to be kept constant all the time, so the radio frequency power of the transmitting end of the radio frequency antenna is constant, and the stability of a launching device is ensured; and meanwhile, the transmitting device has an automatic gain control function, and the output power is not influenced by temperature change.

Description

technical field [0001] The invention relates to the technical field of wireless charging, in particular to a wireless electromagnetic wave constant power transmitting charging device. Background technique [0002] Wireless networks are growing rapidly, including global information and data transmission that allows users to establish long-distance wireless connections, as well as short-range Bluetooth, infrared, ZigBee cellular networks, and RFID technologies. Due to the limited energy of network nodes and the difficulty of replenishment, fast energy consumption and weak battery life are problems that need to be solved urgently in wireless networks. Therefore, considering the influence of the external environment or the constraints of natural conditions, it is an effective solution to use wireless electromagnetic wave transmitting equipment to effectively provide energy for equipment with wireless electromagnetic wave receiving function. Contents of the invention [0003] ...

AI Technical Summary

Problems solved by technology

Due to the limited energy of network nodes and the difficulty of replenishment, fast energy consumption and weak battery life are urgent problems for wireless networks.

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