Charge pump rectifier and radio frequency energy conversion method

A charge pump and rectifier technology, which is applied in the direction of electrical components, circuit devices, output power conversion devices, etc., can solve the problems of restricting wide application, difficulty in perfect matching of charge pump rectifiers, and large resistance value of nonlinear junction resistance. Power capacity, improving RF-DC power conversion efficiency, and suppressing the effects of odd harmonic components

Active Publication Date: 2018-01-19
扬州芯智瑞电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, based on the limitations of the Schottky diode semiconductor process, its nonlinear junction resistance exhibits a large resistance value at low input power levels, and the parasitic parameters introduced by the Schottky diode due to the package, etc., make it difficult for the charge pump rectifier A perfect match with the antenna is achieved at low power levels, which greatly limits its wide application in RF wireless energy transmission and environmental RF energy harvesting applications

Method used

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  • Charge pump rectifier and radio frequency energy conversion method
  • Charge pump rectifier and radio frequency energy conversion method
  • Charge pump rectifier and radio frequency energy conversion method

Examples

Experimental program
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Effect test

Embodiment 1

[0032] Such as figure 2 The shown charge pump rectifier includes a Branch-Line coupler connecting the antenna and the charge pump, and the charge pump includes a first voltage doubler and a second voltage doubler with the same structure;

[0033] The first voltage doubler includes a first diode D1 and a second diode D2 connected in series in the same direction, and a first capacitor C1 is connected in parallel at both ends of the first diode D1 and the second diode D2 connected in series, and the first The anode of the diode D1 provides the load negative potential difference V-, the cathode of the first diode D1 is connected to the anode of the second diode D2, the cathode of the second diode D2 is grounded, the first diode D1 and the second The electrode points between the diodes D2 are connected to one end of the second capacitor C2, and the other end of the second capacitor C2 is used as the input end of the first voltage doubler;

[0034] The second voltage doubler inclu...

Embodiment 3

[0055] Such as image 3 The shown charge pump rectifier includes a Branch-Line coupler connecting the antenna and the charge pump, and the charge pump includes a first voltage doubler and a second voltage doubler with the same structure;

[0056] The first voltage doubler includes a first diode D1 and a second diode D2 connected in series in the same direction, and a first capacitor C1 is connected in parallel at both ends of the first diode D1 and the second diode D2 connected in series, and the first The anode of the diode D1 provides the load negative potential difference V-, the cathode of the first diode D1 is connected to the anode of the second diode D2, the cathode of the second diode D2 is grounded, the first diode D1 and the second The electrode points between the diodes D2 are connected to one end of the second capacitor C2, and the other end of the second capacitor C2 is used as the input end of the first voltage doubler;

[0057] The second voltage doubler includ...

Embodiment 2

[0059] In Example 2, by connecting a 50-ohm matching load to the isolated port, the reflected power caused by the mismatch of the charge pump rectifier will all enter the isolated port and be consumed on the 50-ohm resistor, which avoids the above-mentioned reflected electromagnetic wave from affecting the charge pump rectifier. make an impact.

[0060] In order to avoid the above-mentioned emitted electromagnetic waves from being consumed and wasted, the present invention proposes as Figure 4 The circuit configuration shown.

[0061] Example 3

[0062] Such as image 3 The shown charge pump rectifier includes a Branch-Line coupler connecting the antenna and the charge pump, and the charge pump includes a first voltage doubler and a second voltage doubler with the same structure;

[0063] The first voltage doubler includes a first diode D1 and a second diode D2 connected in series in the same direction, and a first capacitor C1 is connected in parallel at both ends of the ...

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Abstract

The invention discloses a charge pump rectifier in the field of wireless charging. The charge pump rectifier comprises a Branch-Line coupler connecting an antenna and a charge pump, wherein the chargepump comprises a first voltage multiplier and a second voltage multiplier which are same in structure and opposite in diode connection sequence; a negative potential difference V- output by the firstvoltage multiplier is equivalent to a positive potential difference V+ output by the second voltage multiplier; an input end of the Branch-Line coupler is connected with the antenna; and two output ends of the Branch-Line coupler are respectively connected with an input end of the first voltage multiplier and an input end of the second voltage multiplier.

Description

technical field [0001] The invention relates to a charge pump rectifier, in particular to a radio frequency energy conversion method of the charge pump rectifier. Background technique [0002] As a cutting-edge technology with great potential, wireless energy transmission and environmental radio frequency energy harvesting technology can get rid of the lengthy cable shackles in the traditional energy transmission field, which is of great significance in the field of Internet of Things and biomedical applications. As a key technology in wireless energy transmission technology, it is the design of Schottky diode rectifier based on zero bias to realize high-efficiency conversion of RF-to-DC power. Among them, the charge pump rectifier is a common and practical type of rectifier, especially for low power density environments. Under the premise of ensuring high efficiency conversion of RF-DC power, the charge pump rectifier can effectively increase the output voltage, and then me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M7/10H02M1/14H02J50/20
Inventor 张浩姚鸿仲正
Owner 扬州芯智瑞电子科技有限公司
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