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Energy collection rectifier for environmental electromagnetic wave

An environmental electromagnetic wave and energy harvesting technology, applied in electromagnetic wave systems, current collectors, electric vehicles, etc., can solve the problems of non-linear working characteristics and increase the difficulty of rectification circuits, and achieve low prices for components and materials, low profile, and broad engineering application prospects Effect

Inactive Publication Date: 2015-11-11
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The rectifier diode is a key component of the rectifier circuit. Its performance parameters determine whether the rectifier circuit can work in a low-power environment, and its nonlinear operating characteristics increase the difficulty of realizing multi-frequency operation of the rectifier circuit.

Method used

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  • Energy collection rectifier for environmental electromagnetic wave
  • Energy collection rectifier for environmental electromagnetic wave
  • Energy collection rectifier for environmental electromagnetic wave

Examples

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Embodiment 1

[0025] see Figure 1 to Figure 3 , an ambient electromagnetic wave energy harvesting rectifier, comprising an upper metal microstrip rectification circuit structure (1), a middle dielectric substrate (2) and a lower ground metal layer (3). The metal microstrip rectifier circuit structure on the upper layer consists of a double T-shaped short-circuit stub impedance matching network (4) connected to a DC load (7) through a rectifier diode (5) and a microstrip fan-shaped pass-through filter (6) in turn .

Embodiment 2

[0027] This embodiment is basically the same as Embodiment 1, and the special features are as follows: the double T-shaped short-circuit stub impedance matching network (4) is formed by connecting two T-shaped short-circuit stub impedance converters (8), and its geometric parameters can be used for Adjust the input impedance of the rectifier circuit to achieve impedance matching at the three frequency points of 920MHz, 2.14GHz, and 2.4GHz. The T-shaped short-circuit stub impedance converter (8) is connected to the lower metal layer (3) through the circular metal vias (9) at the lower ends of the two T-shaped legs, and is used for impedance matching and provides a DC circuit. The input port of the double T-shaped short-circuit stub impedance matching network (4) is connected to an SMA connector, so as to be conveniently connected to the receiving antenna.

[0028] The type of the rectifier diode (5) is HSMS-2850, in order to realize rectification under low power, it is connecte...

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Abstract

The invention relates to an energy collection rectifier for an environmental electromagnetic wave. The rectifier comprises an upper metal microstrip rectification circuit structure, a central dielectric substrate, and a lower grounding metal layer. The upper metal microstrip rectification circuit structure is formed by that an impedance matching network with two T-shaped short-circuit branches is connected with a DC load sequentially through a rectification diode and a microstrip fan-shaped through filter. The rectifier is suitable for three frequency bands of a current mainstream wireless communication system: ISM915MHz, UMTS2100, and 2.4GHz of an 802.11b protocol. The rectifier can obtain higher rectification efficiency under the condition of -10dBm low input power. The rectifier is low in profile, is small in size, is light in weight, is firm in structure, is easy to integrate, employs the technology of printed circuits, is very low in cost of selected elements and materials, is suitable for large-scale production, and is good in prospect of engineering application.

Description

technical field [0001] The invention relates to an environmental electromagnetic wave energy collection rectifier, which is suitable for low-power environments and can work in three frequency bands, and belongs to the field of rectification circuits with three-frequency working characteristics in the field of energy collection. Background technique [0002] Energy harvesting technology can be used to collect and utilize various energy forms, such as solar energy, wind energy, electromagnetic wave energy and so on. In recent years, with the continuous development of wireless communication technology, the surrounding environment is full of electromagnetic wave energy of different frequencies, so the research on energy harvesting technology in the form of electromagnetic wave has become a hot spot. The rectifier circuit is the key technology of the electromagnetic wave energy harvesting system. It can convert the collected electromagnetic energy in the surrounding environment i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/02H02J17/00
Inventor 陆佳骏杨雪霞梅欢
Owner SHANGHAI UNIV
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