A compact dual linear polarization improved Greinacher rectifier antenna structure

A dual-line polarization and rectifying antenna technology, which is applied in the direction of antennas, radiating element structures, electrical components, etc., can solve problems such as polarization mismatch between antennas, and achieve the effect of solving the problem of polarization mismatch between antennas

Pending Publication Date: 2019-01-18
苏州芯智瑞微电子有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a compact dual-linear polarization improved Greinacher rectenna structure to solve the problem of polarization mismatch between antennas in wireless power transmission technology

Method used

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  • A compact dual linear polarization improved Greinacher rectifier antenna structure
  • A compact dual linear polarization improved Greinacher rectifier antenna structure
  • A compact dual linear polarization improved Greinacher rectifier antenna structure

Examples

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Effect test

Embodiment 1

[0022] Such as figure 2 The schematic diagram of the conventional dual-polarized rectenna circuit is shown, including the dual-polarized antenna and the improved Greinacher charge pump. The improved Greinacher charge pump includes a first voltage doubler and a second voltage doubler with the same circuit structure;

[0023] The first voltage doubler includes first diodes connected in series in the same direction D 1 and the second diode D 2 , the first diode in series D 1 and the second diode D 2 The first capacitor is connected in parallel at both ends C 1 , the first diode D 1 The positive pole provides the load R L negative voltage V -, the first diode D 1 The cathode of the second diode D 2 the anode of the second diode D 2 The cathode of the ground, the first diode D 1 and the second diode D 2 between the electrode point and the second capacitor C 2 Connected to one end, the second capacitor C 2 The other end is used as the input end of the fi...

Embodiment 2

[0031] Such as image 3 A compact dual-linearly polarized modified Greinacher rectenna structure is shown, including a dual-linearly polarized antenna, a modified Greinacher charge pump and a directional coupler. The improved Greinacher charge pump includes a first voltage doubler and a second voltage doubler with the same circuit structure;

[0032] The first voltage doubler includes first diodes connected in series in the same direction D 1 and the second diode D 2 , the first diode in series D 1 and the second diode D 2 The first capacitor is connected in parallel at both ends C 1 , the first diode D 1 The positive pole provides the load R L negative voltage V -, the first diode D 1 The cathode of the second diode D 2 the anode of the second diode D 2 The cathode of the ground, the first diode D 1 and the second diode D 2 between the electrode point and the second capacitor C 2 Connected to one end, the second capacitor C 2 The other end is used ...

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Abstract

The invention discloses a compact dual linear polarization improved Greinacher rectifying antenna structure in wireless power transmission application, which includes a dual linearly polarized antenna, an improved Greinacher charge pump and a directional coupler. The improved Greinacher charge pump consists of a first voltage multiplier and a second voltage multiplier with the same circuit structure. The negative voltage V- of the output of the first voltage multiplier is equal to the positive voltage V + of the output of the second voltage multiplier; Directional coupler input, isolation ports are connected with horizontal polarization and vertical polarization ports of the dual linear polarization antenna; The directional coupler straight through and coupling ports are connected with theinput ports of the first voltage multiplier and the second voltage multiplier. The invention has the beneficial effect that the polarization mismatch between antennas in the wireless power transmission technology is effectively solved by combining a dual linear polarization antenna, an improved Greinacher charge pump and a directional coupler. The invention can be applied to the application of high-efficiency wireless power transmission system.

Description

technical field [0001] The invention relates to a rectenna design in wireless power transmission application, in particular to a compact dual-line polarization improved Greinacher rectenna structure. Background technique [0002] Wireless power transfer technology has promoted the rapid development of wireless sensor networks. As a key technology in wireless power transmission, rectennas can efficiently convert radio frequency to DC power, thereby meeting the working voltage requirements of electronic components in wireless sensor networks. Generally, linearly polarized transmitting and receiving antennas are used for wireless power interconnection between the RF signal source and the rectifier circuit. However, the polarization mismatch between antennas seriously affects the efficiency of wireless power interconnection between the RF signal source and the rectifier circuit. Traditional dual-polarized rectennas can solve the polarization mismatch problem to a certain exten...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/36H01Q15/24H01Q23/00
CPCH01Q1/36H01Q15/24H01Q23/00
Inventor 张浩姚鸿
Owner 苏州芯智瑞微电子有限公司
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