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Wireless energy collecting device

A collection device, wireless energy technology, applied in the direction of electrical components, etc., can solve the problems of low sensitivity, failure to reach the turn-on voltage of key device conversion devices, difficult low power application, etc., to achieve simple implementation, maximum power transmission, and low cost Effect

Inactive Publication Date: 2017-10-03
HUADA SEMICON CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the limitation of the current RF energy harvesting system is that its sensitivity is low, that is, the level converted by the antenna from the low-power RF signal is low, and it cannot reach the key components of the system, such as the conversion device of the RF-DC converter. turn-on voltage, making the conversion device inoperable, making such RF energy harvesting systems difficult to use for low-power applications

Method used

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Embodiment Construction

[0050] It should be noted that components in the various figures may be shown exaggerated for the purpose of illustration and are not necessarily true to scale. In the various figures, identical or functionally identical components are assigned the same reference symbols.

[0051] Unless otherwise specified, in this application, the quantifiers "a" and "an" do not exclude the scene of a plurality of elements.

[0052] figure 1 A block diagram of a first embodiment of a wireless energy harvesting device 100 according to the present invention is shown.

[0053] Such as figure 1 As shown, the wireless energy harvesting device 100 includes an antenna 101 for receiving a wireless signal and converting it into an electric field signal. The wireless signal may be a radio frequency signal, but may also be a signal of other frequency bands. The antenna impedance R 天线 +jX 天线 is set such that the antenna impedance R 天线 +jX 天线 The impedance R' after impedance conversion with the w...

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Abstract

The invention relates to a wireless energy collecting device. The device comprises an antenna, a wireless direct-current converter impedance conversion circuit and a wireless direct-current converter; the impedance R antenna+jX antenna of the antenna is set to be conjugated with an impedance R' converter+jX' converter of the wireless direct-current converter, which is converted in impedance; the wireless direct-current converter impedance conversion circuit is connected with the wireless direct-current converter to convert the impedance R' converter+jX' converter of the wireless direct-current converter into an R' converter+jX' converter, so that the absolute value of the imaginary part X' converter of the impedance of the wireless direct-current converter, which is converted in impedance, is N times greater than the absolute value of the real part R' converter; N is greater than square root of 3; and, the wireless direct-current converter is connected with the wireless direct-current converter impedance conversion circuit so as to convert the output signals into direct-current signals. By adoption of the device, good voltage amplification and good impedance matching can be realized. The invention further relates to a passive voltage conversion matching circuit and a sensing device.

Description

technical field [0001] The present invention generally relates to the field of wireless signal amplification, and specifically relates to a wireless energy harvesting device, a passive voltage conversion matching circuit and a corresponding sensing device. Background technique [0002] The rise of the Internet of Things has brought great convenience to people's lives, and the improvement of the Internet of Things technology has become the goal pursued by the industry. One improvement target is the power supply of its wireless sensor nodes. A wireless sensor node (including one or more wireless sensors) is an important part of the Internet of Things, which is used for real-time data collection, processing and transmission of networked devices. Due to the huge number of wireless sensor nodes, their power supply has become a prominent problem. For example, assuming an IoT sensor network has 10,000 wireless sensor nodes, and the battery of each sensor node can last for 4 years...

Claims

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Application Information

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IPC IPC(8): H02J5/00
CPCH02J5/005
Inventor 王伟印王永流李荣信
Owner HUADA SEMICON CO LTD