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Radio-frequency rectifying circuit with broadband dual-branch structure

A rectifier circuit and dual-branch technology, applied in circuit devices, electrical components, etc., to achieve the effect of improving the utilization rate of radio frequency energy, suppressing harmonics, and increasing the output voltage

Inactive Publication Date: 2017-09-15
SYSU CMU SHUNDE INT JOINT RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the application of wireless energy harvesting, it is often necessary to meet the requirements of wide dynamic range of input power, high energy conversion efficiency, and high load voltage. It is difficult for existing rectifier circuits to meet the above requirements at the same time.

Method used

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  • Radio-frequency rectifying circuit with broadband dual-branch structure
  • Radio-frequency rectifying circuit with broadband dual-branch structure
  • Radio-frequency rectifying circuit with broadband dual-branch structure

Examples

Experimental program
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Effect test

Embodiment 1

[0034] The structure and principle of the radio frequency rectification circuit with broadband double branch structure are as follows: figure 1 , 2 As shown, the microstrip line with a characteristic impedance of 50 ohms is used as the signal input terminal, and then passes through a splitter to a single-band branch and a dual-band branch. Both of the two branches include an impedance matching network and a voltage doubler rectification branch and harmonic suppression branch. Since the matching networks of the two branches work in different frequency bands, after the RF energy passes through the input terminal, it is split by the RF energy of the splitter. The single-frequency branch rectifies a specific single frequency band, and the dual-frequency branch rectifies two specific Single-band rectification. Harmonic suppression is required after voltage doubling and rectification to filter out high-order harmonic components in the output voltage. The voltage doubling rectific...

Embodiment 2

[0040] The structure and principle of the radio frequency rectification circuit of another kind of preferred scheme broadband dual-branch structure are as follows image 3 , 4 As shown, the microstrip line with a characteristic impedance of 50 ohms is used as the signal input terminal, and then passes through a splitter to a single-band branch and a dual-band branch. Both of the two branches include an impedance matching network and a voltage doubler rectification branch and harmonic suppression branch. Since the matching networks of the two branches work in different frequency bands, after the RF energy passes through the input terminal, it is split by the RF energy of the splitter. The single-frequency branch rectifies a specific single frequency band, and the dual-frequency branch rectifies two specific Single-band rectification. Harmonic suppression is required after voltage doubling and rectification to filter out high-order harmonic components in the output voltage. T...

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Abstract

The invention relates to a radio-frequency rectifying circuit with a broadband dual-branch structure. The radio-frequency rectifying circuit comprises an input connector and a branching unit; the input connector is connected with the input end of the branching unit; the radio-frequency rectifying circuit also comprises a single-frequency-band branch and a dual-frequency-band branch, wherein the single-frequency-band branch comprises a single-frequency impedance matching network, a double voltage rectifying branch and a harmonic suppression branch, wherein the input end of the single-frequency impedance matching network is connected with the output end of the branching unit; the output end of the single-frequency impedance matching network is connected with the input end of the double voltage rectifying branch; the output end of the double voltage rectifying branch is connected with the input end of the harmonic suppression branch; the dual-frequency-band branch comprise a dual-frequency impedance matching network, a double voltage rectifying branch and a harmonic suppression branch, wherein the input end of the dual-frequency impedance matching network is connected with the other output end of the branching unit; the output end of the dual-frequency impedance matching network is connected with the input end of the double voltage rectifying branch; the output end of the double voltage rectifying branch is connected with the input end of the harmonic suppression branch.

Description

technical field [0001] The present invention relates to the field of wireless energy transmission, and more specifically, relates to a radio frequency rectification circuit with a broadband double-branch structure. Background technique [0002] In the field of wireless sensor networks and intelligence, energy harvesting is the key to solving the problem of energy sources. Most of the traditional energy harvesting systems are based on solar energy and wind energy. This energy harvesting system is greatly limited by geographical and climatic conditions and can only be used in specific areas. Only regions can be applied, which restricts the actual application scenarios and makes it difficult to promote. Radio frequency energy harvesting refers to the collection of surrounding electromagnetic waves and conversion into usable electrical energy. Based on advanced wireless telecommunications, microwave energy has the advantages of mobility, green and free, and is not affected by th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J50/20H02J5/00
CPCH02J5/005H02J50/20
Inventor 谭洪舟黎梓宏曾淼旺刘先泺廖肇荣
Owner SYSU CMU SHUNDE INT JOINT RES INST
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