Ultra-wide-band antenna energy collection system used for energy supply for online monitoring system

Abstract

The invention discloses an ultra-wide-band antenna energy collection system used for energy supply for an online monitoring system. The ultra-wide-band antenna energy collection system comprises an ultra-wide-band antenna and a rectifying circuit; an FR-4 epoxy glass fibre plate with a dielectric constant of 4.4 is used as a dielectric substrate; on the basis of a coplanar waveguide feed slot dipole antenna, a gradual change structure is adopted, so that the structural change of the slot antenna is slow, thereby achieving an impedance gradual change effect and further endowing the antenna with the broadband characteristic; on the basis, a pair of branch prolonging current paths are added, so that the antenna bandwidth is improved while the antenna working frequency is lowered, and low frequency can be as low as 800MHz; and next, the antenna is connected with the voltage-multiplying and rectifying circuit which consists of a capacitor and a diode for converting low-power radio-frequency energy collected by the antenna into direct current energy required by the online monitoring system. By adoption of the ultra-wide-band antenna energy collection system, radio-frequency electromagnetic wave energy can be collected widely and flexibly, so that energy supply for a monitoring system sensor can be realized effectively.

Description

technical field [0001] The invention relates to an antenna energy collection system, in particular to an ultra-wideband antenna energy collection system for supplying energy to an online monitoring system. Background technique [0002] In order to meet the needs of online monitoring of environmental factors such as water quality and atmosphere, the development of various online monitoring systems has become the focus of recent research. As an important component of an on-line monitoring system, various sensors need to be installed in the wild (not indoors), and their energy supply issues have attracted more and more researchers' attention. With the maturity of ultra-low power chip technology, collecting radio frequency energy in the surrounding environment to provide power for sensors has become an effective and feasible new energy supply mode. The most important part of wireless energy harvesting technology is the design of the receiving antenna. [0003] The sensors in t...

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Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide an ultra-broadband antenna energy collection system for supplying energy to an online monitoring system, to solve the complex wireless environment where the online monitoring system is located. Narrow and large size etc.

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