Radio frequency energy acquisition system based on planar inverted-F antenna

Abstract

The invention relates to a radio frequency energy acquisition system, and particularly relates to a radio frequency energy acquisition system based on a planar inverted-F antenna. The radio frequency energy acquisition system based on the planar inverted-F antenna comprises an antenna module, an impedance matching network, a boosting circuit, a rectification module and an energy storage module, wherein the antenna module, the impedance matching network, the boosting circuit, the rectification module and the energy storage module are sequentially connected; the antenna module adopts the planar inverted-F antenna; the rectification module comprises a low-pass filter and a full-wave rectification circuit, and the full-wave rectification circuit uses a Schottky diode as the rectification tube. The antenna module acquires electromagnetic waves in the space, the voltage is boosted to the working voltage through the boosting circuit and then inputted to the rectification circuit, DC voltage is then outputted through the filter of the rectification module, and finally, the energy storage module is used for storing the energy. Compared with an energy acquisition system by using an antenna array or other antenna structure, the scheme of the invention can acquire multiple frequencies of electromagnetic waves, and the energy conversion frequency is high.

Description

technical field [0001] The invention relates to a radio frequency energy collection system, in particular to a radio frequency energy collection system based on a planar inverted-F antenna. Background technique [0002] In the historical moment of wireless communication technology, radio frequency energy harvesting technology came into being. In recent years, energy harvesting has been the focus of the research community. There are multiple energy sources in the environment, such as solar energy, kinetic energy and wind energy. Now, wearable devices have been popularized on a large scale and are trying to obtain a wider range of acceptable habits and usability. Circuits such as sensors and microcontrollers in wearable devices are generally powered by batteries. Due to the limited life of the batteries, they need to be charged regularly. Power is supplied to sensors, microcontrollers and other circuits through the energy harvesting system. The energy harvesting system can con...

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Problems solved by technology

[0003] In order to solve the problems of single collection frequency and low conversion efficiency in the existing energy collection system, the present invention provides a radio frequency energy collection system based on planar inverted F antenna

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