A Microstrip Rectifier Circuit Based on Dual-frequency Impedance Matching

Abstract

The invention relates to a dual frequency impedance matching based microstrip rectifier circuit, comprising a rectifier circuit, an input connector, a dual frequency impedance matching circuit and a harmonic wave suppression circuit. The rectifier circuit includes two rectification branches; the harmonic wave suppression circuit includes two harmonic wave suppression branches; the output ends of the two rectification branches are connected with the input ends of the two harmonic wave suppression branches respectively. The output end of the input connector is connected with the input end of the dual frequency impedance matching circuit and the output end of the dual frequency impedance matching circuit is connected with the input ends of the two rectification branches respectively. Compared with the prior art, the circuit of the invention is advantageous as follows: 1) the adoption of improved [pai]-shaped microstrip matching method achieves a dual-frequency matching effect and improves the energy utilization efficiency; 2) the arrangement of symmetrical differential structures and the capacitors in parallel suppress the second harmonic waves, reduce the size of the circuit, and improve the integration; and 3) the use of a four-times differential rectifier circuit improves the output voltage of a DC load.

Description

technical field [0001] The present invention relates to the field of wireless energy transmission, in particular to a microstrip rectifier circuit based on dual-frequency impedance matching. Background technique [0002] Wireless energy transmission technology refers to the technology in which electric energy is not transmitted through physical wires, but uses microwaves for wireless transmission. Microwave energy has been extensively researched due to its advantages of mobility, greenness and freeness, and not being affected by the day and night environment. With the development of semiconductor technology, etc., wireless energy transmission technology has been widely developed in the field of low-power applications, especially in portable wireless electronic devices and the like. [0003] Wireless communications between wireless devices, such as wireless telecommunication base stations and mobile phones, flood the surrounding environment with RF energy. Therefore, wasted...

AI Technical Summary

Problems solved by technology

The frequency distribution that can be collected and utilized is very wide, but the traditional radio frequency rectification circuit usually only works in one frequency band, in addition, the bandwidth is small, the efficiency is low, and the size is large. Therefore, it is necessary to design a radio frequency rectification circuit that can work in multiple frequency bands and high bandwidth is very meaningful

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