Integrated high-efficiency rectification antenna for collection of wireless energy

A rectifier antenna, wireless energy technology, applied in the direction of antenna, antenna grounding device, antenna grounding switch structure connection, etc., can solve the problems of large occupied area, not meeting the requirements of antenna, compact rectifier circuit and easy integration, etc. Easy to implement, easy to implement impedance matching, area saving effect

Active Publication Date: 2017-03-01
佛山以太物联科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This makes the area occupied between the two relatively large, which does not meet the requirements of the prior art for the compactness and ease of integration of the antenna and the rectifier circuit

Method used

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  • Integrated high-efficiency rectification antenna for collection of wireless energy
  • Integrated high-efficiency rectification antenna for collection of wireless energy
  • Integrated high-efficiency rectification antenna for collection of wireless energy

Examples

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Embodiment 1

[0029] The present invention is further described below with reference to the accompanying drawings by taking the collection of signal energy in the GSM1800 frequency band as an example, but the embodiments of the present invention are not limited to the GSM1800 frequency band.

[0030] figure 1 It is a schematic structural diagram of the fractal loop antenna 1 in the rectenna. The fractal loop antenna 1 has a square shape, which is composed of 3 straight strips and 8 second-order Koch fractal structures 2, and its size is 42mm X 42mm. The width of each straight bar is 0.8mm and the length is 2.5mm. At the designed operating frequency of 1.83 GHz, the total electrical length of the antenna is approximately 1.37 wavelengths. In this embodiment, a printed circuit board (PCB) process is used to fabricate the fractal loop antenna 1 on a polytetrafluoroethylene dielectric plate with a thickness of 0.8 mm, and the relative permittivity is 2.55. The fractal loop antenna 1 is locat...

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Abstract

The invention relates to an integrated high-efficiency rectification antenna for the collection of wireless energy, and the antenna comprises a dielectric plate, a fractal ring antenna, and a rectification circuit. The fractal ring antenna and the rectification circuit are disposed on the top layer of the dielectric plate, and the input end of the rectification circuit is connected with one parallel feed line in the fractal ring antenna. The rectification antenna also comprises a metal ground plane disposed on the bottom layer of the dielectric plate, and the position of the metal ground plane on the bottom layer of the dielectric plate is aligned with the position of the fractal ring antenna on the top layer of the dielectric plate. The metal ground plane is connected with the other parallel feed line of the fractal ring antenna. The rectification circuit is disposed in the fractal ring antenna.

Description

technical field [0001] The invention relates to the field of wireless energy collection, and more particularly, to an integrated high-efficiency rectenna for wireless energy collection. Background technique [0002] In the field of microwave wireless energy transmission and collection, the antenna and RF rectifier circuit are the core modules of the system, which directly affect the overall performance of the system. [0003] Due to the uncertainty of the wireless energy source, it is suitable to use a loop antenna with approximately omnidirectional radiation in the energy collection. The appropriate improvement of the loop antenna by the fractal method can further realize the miniaturization and multi-frequency characteristics of the antenna. When the loop antenna circumference is approximately equal to one wavelength, the radiation impedance is about 200 ohms, which makes it difficult to match to a 50 ohm circuit. In order to solve this problem, the traditional method is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q23/00H01Q1/48H01Q1/50
CPCH01Q1/48H01Q1/50H01Q23/00
Inventor 谭洪舟曾淼旺安德烈·安德烈尼克刘先泺黎梓宏曾衍瀚
Owner 佛山以太物联科技有限公司
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