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Wireless energy transmission technology is an important research field in recent years, and has a good research value and application prospect. Wireless energy transmission technology: short electromagnetic inductive coupling transmission technology, medium range of electromagnet ic coupling resonance transmission technology, remote microwave power transmission technology. These three types of wireless energy transmission technology work in different application fields. Through this article, we are to study the wireless energy transmission system, which is based on the non licensed 2.45/5.8GHz microwave, as the energy carrier, which can improve the transmission efficiency and realize the variable transmission of energy. The dual band (2.45/5.8GHz) segment is achieved by loading microstrip branch and slot, and the narrow band gap of microstrip slot antenna is solved. The frequency of energy transmission is the same as that of the wireless sensor network. It can realize the reuse of the energy receiving system and the antenna. It can reduce the volume of the product and reduce the complexity of the system. The research can be extended to other areas: for all kinds of small electronic products in the "free space", such as a variety of small aircraft, such as a variety of small aircraft, etc., for the "No power facility" family, office, etc..

Research of antenna for microwave energy transmission system for IOT