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Full-polarization rectification antenna with wide bandwidth and wide power range and energy transmission system

A rectenna, full polarization technology, applied in the direction of antenna, antenna grounding device, antenna grounding switch structure connection, etc., can solve the problems of broadband, wide power and polarization rotation angle insensitivity, etc., to improve circuit matching performance, improve Rectification efficiency, the effect of improving circuit efficiency

Active Publication Date: 2021-11-23
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above technical means cannot simultaneously realize the characteristics of broadband, wide power and polarization rotation angle insensitivity

Method used

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  • Full-polarization rectification antenna with wide bandwidth and wide power range and energy transmission system
  • Full-polarization rectification antenna with wide bandwidth and wide power range and energy transmission system
  • Full-polarization rectification antenna with wide bandwidth and wide power range and energy transmission system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Such as figure 1 and figure 2 As shown, a fully polarized rectenna with wide bandwidth power range includes a receiving antenna and a rectifying circuit.

[0035] The receiving antenna is a wide-bandwidth beam dual-polarized antenna, using a coaxial line as a feeding balun, the radiator adopts a bow-tie vibrator with folded ends, and the floor adopts a square single-sided copper-clad dielectric board with folded edges around it, and the radiation Eight metal walls are symmetrically loaded around the body to realize the functions of beam widening and bandwidth expansion.

[0036] It further specifically includes: a floor 1 , feeding coaxial lines 2 and 3 and a radiator 6 . The floor is a square dielectric board, the upper surface of which is covered with copper, and the four sides are folded downward by 90 degrees, and the folded shape is a rectangular dielectric board. This structure can improve the front-to-back ratio of the receiving antenna. In this embodiment, t...

Embodiment 2

[0058] An energy transmission system, comprising the fully polarized rectifying antenna described in Embodiment 1, wherein the fully polarized rectifying antenna includes a receiving antenna and a rectifying circuit;

[0059] The receiving antenna is a wide-bandwidth beam dual-polarized antenna, including a floor and a feeding coaxial line. One side of the floor is provided with a metal wall and a radiator. The metal wall is arranged around the radiator, and the feeding coaxial line respectively connected to the radiator and the input port of the rectifier circuit;

[0060] The rectifier circuit is a double-input rectifier circuit with a wide bandwidth power range, printed on the other side of the floor, and includes a six-port network based on a Lange coupler, which is connected to the first rectification path and the first rectification path respectively. The input end of the second rectification path is connected, and the two output ends of the first rectification path and ...

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Abstract

The invention discloses a full-polarization rectification antenna with a broadband wide power range and an energy transmission system. The full-polarization rectification antenna comprises a receiving antenna and a rectification circuit; the receiving antenna is a broadband wide-beam dual-polarization antenna and comprises a floor and a feed coaxial line; one side of the floor is provided with a metal wall and a radiator; the metal wall is arranged around the radiating body, and the feed coaxial line is connected with the radiating body and an input port of the rectifying circuit respectively; and the rectifying circuit is a double-input rectifying circuit with a wide broadband power range and is printed on the other surface of the floor. The antenna can be used for broadband microwave wireless energy collection, and has the advantages that the circuit matching performance can be improved in a broadband wide power range, the circuit efficiency is improved, and the conversion from unbalance to balance of power can be realized; after the antenna is combined with a dual-polarization receiving antenna, stable rectification efficiency can be maintained under the condition of different incident polarization rotation angles.

Description

technical field [0001] The invention relates to the technical field of microwave wireless energy transmission, in particular to a fully polarized rectifying antenna with a wide bandwidth power range and an energy transmission system. Background technique [0002] With the rapid development of wireless communication and low-power electronic devices today, wireless energy transfer and wireless energy harvesting have gradually become promising technologies for wireless charging of electronic devices, such as sensor nodes in the Internet of Things, medical devices, and micro-robots. However, in different application scenarios, the working conditions will also change, including receiving direction, frequency, input power level and load value, etc. However, traditional rectennas can only work in a specific scenario, and there are few research works that can work simultaneously in multiple scenarios. The rectenna consists of a rectifying circuit and a receiving antenna. The receiv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/48H01Q1/50H01Q1/36H01Q5/50H01Q23/00
CPCH01Q1/48H01Q1/50H01Q1/36H01Q5/50H01Q23/00
Inventor 章秀银薄少飞区俊辉徐碧航
Owner SOUTH CHINA UNIV OF TECH
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