Research on Rectenna for Microwave Energy Harvesting

In recent years, with the rapid development of 5G communications and wireless sensor networks have been applied in many fields, such as disaster management, infrastructure, monitoring, etc. At present, batteries are still the main power source for sensor nodes, but as the distributed environment of sensor networks becomes wider and more complex, battery maintenance and replacement will become a very difficult problem. In addition, with the development of micro-electromechanical systems and low-power electronic technologies, more and more small, low-power handheld mobile devices have appeared on the market. In addition, the battery itself has a limited lifespan, which can also cause environmental pollution. Using rectennas to power these devices with microwave energy in the environment will provide these devices with sustainable electrical energy and can also avoid environmental pollution from waste batteries.