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A spatial matching technique for microwave wireless energy transmission

An energy transmission, microwave wireless technology, applied in electrical components, circuit devices, etc., can solve the problem of not considering the free space matching problem of the transceiver antenna, achieve the effect of improving the DC conversion efficiency and solving the simulation difficulty

Active Publication Date: 2018-12-25
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Existence 1) only consider the power matching problem of the rectenna, and do not consider the matching problem of the free space of the transmitting and receiving antenna

Method used

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  • A spatial matching technique for microwave wireless energy transmission
  • A spatial matching technique for microwave wireless energy transmission
  • A spatial matching technique for microwave wireless energy transmission

Examples

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Effect test

Embodiment 1

[0046] A microwave energy transmission system, the working frequency of the system is 2.45GHz. It is composed of a transmitting antenna and a receiving antenna array. The aperture size of the transmitting antenna array is 35 wavelengths, and the aperture size of the receiving antenna array is 50 wavelengths. The distance is 980.4 wavelengths. The transmitting antenna array is linearly polarized. In order to achieve polarization Matching, the receiving antenna array in the corresponding rectenna also adopts linear polarization.

[0047] Such as figure 2 Microwave system transceiver antenna diagram and Figure 13 As shown in the schematic diagram of the transmitting antenna, both the transmitting antenna and the receiving antenna adopt linear polarization in the Y-axis direction, and the transmitting antenna array transmits a high-energy incoming wave from the horn antenna 5, and two layers of artificial materials 6 are placed in front of the horn antenna 5, as Figure 14 As ...

Embodiment 2

[0054] A microwave energy transmission system, the working frequency of the system is 2.45GHz. It is composed of a transmitting antenna array and a receiving antenna array. The aperture size of the transmitting antenna array is 35 wavelengths, the aperture size of the receiving antenna array is 50 wavelengths, and the distance is 980.4 wavelengths.

[0055] Such as Figure 13 As shown in the transmitting antenna, the transmitting antenna adopts the linear polarization mode in the Y-axis direction, and the transmitting antenna transmits a high-energy incoming wave from the horn antenna 5, and an artificial material 6 is placed in front of the horn antenna 5, such as Figure 14 As shown, it is composed of a square frame structure to achieve a uniformly distributed field with an aperture field amplitude of 74.23V / m.

[0056] Such as image 3 Linear polarization / circular polarization receiving antenna array distribution, Figure 11 Circularly polarized receiving antenna unit st...

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Abstract

The invention relates to microwave energy transmission field, aiming at obtaining the maximum total energy transmission efficiency of a microwave energy transmission system. An energy transmission space matching technology comprises a transmitting antenna, a receiving antenna and a rectifying circuit. Field matching, impedance matching and power matching are carried out sequentially; the field matching includes polarization matching and aperture field matching. The invention provides the energy transmission space matching technology, which improves the space electromagnetic wave transmission efficiency and the rectifier antenna direct current conversion efficiency by improving field matching, impedance matching and power matching, and improves the total energy transmission efficiency of amicrowave energy transmission system. The field matching of the invention is matched by antenna aperture field distribution and mutual coupling action of transmitting antenna and receiving antenna, thus solving the problem of full-scale simulation difficulty of a complex large-scale system.

Description

technical field [0001] The invention relates to the field of microwave energy transmission, in particular to an energy transmission space matching technology. Background technique [0002] At present, energy transmission is mainly realized by erecting wires or cables, which requires a lot of manpower and material resources, and there is still a lot of energy wasted due to the loss of wires or cables during transportation. The microwave energy transmission technology converts electrical energy into microwaves for transmission, which reduces the erection of transmission lines, eliminates complicated wires, makes the living space tidy, and has a wide range of application prospects. [0003] Microwave power transmission (MPT) can realize long-distance transmission of energy, and is an important wireless energy transmission method. In the wireless energy transmission method of microwave energy transmission, the energy is transmitted into space in the form of microwaves by the tr...

Claims

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Application Information

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IPC IPC(8): H02J50/20
CPCH02J50/20
Inventor 黄卡玛卢萍杨阳朱铧丞
Owner SICHUAN UNIV