Sparse wireless energy transmission TRM design method and structure

A wireless energy transmission and design method technology, applied in computing, special data processing applications, instruments, etc., can solve the problems of not caring about the reduction of gain, limiting the flexibility of sparse arrays, and being unable to apply field distribution design, etc.

Active Publication Date: 2019-10-08
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology

The specific performance is as follows: First, the optimization target is limited to the far-field distribution of linear arrays or area arrays, which cannot be applied to the field distribution design in complex energy transmission scenarios such as near-field or scattering environments; second, sparse arrays generally only consider the degree of sidelobe suppression , and does not care about the reduction of gain, so it cannot meet the specified energy transmission efficiency requirements; finally, this technology usually uses fixed structural units as the basic units before and after sparse, which limits the structural flexibility of sparse arrays

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  • Sparse wireless energy transmission TRM design method and structure
  • Sparse wireless energy transmission TRM design method and structure
  • Sparse wireless energy transmission TRM design method and structure

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Embodiment 1

[0080] Embodiment 1. Sparse wireless energy transmission TRM structure and design in free space

[0081] This embodiment provides a sparse wireless energy transmission TRM design method and structure, the schematic diagram of the design method is as follows figure 1 shown, including the following steps:

[0082] Step 1. Set dense unit TRM and energy transmission index

[0083] Set the dense unit TRM as an 8-element line array with equal spacing, and the numbers of the basic units are 1 to 8 from left to right; the powered antenna is 4 equally spaced units located in free space, 500mm away from the TRM array, and the central axis of the transceiver array same as Figure 4 shown. The basic unit of the dense unit TRM is a single-antenna active unit, which is formed by connecting the feed end of a single antenna unit to an active feed branch, such as Figure 5 shown. The transmitting and receiving antenna units are all microstrip patch antennas working at 2.45GHz, and the sp...

Embodiment 2

[0099] Embodiment 2. Sparse wireless energy transmission TRM structure and design in a scattering environment

[0100] Step 1. Set dense unit TRM and energy transmission index

[0101] Set the dense port TRM as an 8-element equidistant line array, the numbers are Ω={1,...,8}, N=8; the energy-receiving areas are four discrete ones located at a distance of 500mm from the TRM line array in the scattering environment Position, that is, the location of the receiving unit; the scatterers are six metal cylinders with a height of 50mm and a spacing of 110mm, located between the transceiver arrays and 200mm away from the normal direction of the TRM line array, such as Figure 9 shown. The basic unit of the dense unit TRM is a single-antenna active unit, which is formed by connecting the feed end of a single antenna to an active feed branch, such as Figure 5 shown. The transmitting and receiving antenna units are all microstrip patch antennas working at 2.45GHz, and the specific par...

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Abstract

The invention discloses a sparse wireless energy transmission time inversion mirror design method and structure, and belongs to the technical field of electromagnetic wave wireless energy transmission. The method comprises the following steps of setting a discretized energy receiving area and a dense unit TRM composed of the basic units, and determining an energy transmission index; based on the channel parameters of the dense unit TRM, determining the optimal active unit position, number and gain compensation factor, and meeting a sidelobe threshold index; and designing a sparse active unit TRM according to the characteristics of the selected active unit to meet an efficiency threshold index. The structural characteristic of the sparse TRM obtained through the method is that the caliber of the active unit is integral multiple of that of the basic unit and can be realized by arranging the basic units into an array conveniently. According to the present invention, the problems that thenumber of the active units of the wireless energy transmission TRM is too large, the feed is complex and the system cost is high, are solved, the TRM sparse design in various environments is realizedwhile the expected energy transmission index is met.

Description

technical field [0001] The invention belongs to the technical field of electromagnetic wave wireless energy transmission, and in particular relates to a design method and structure of a sparse wireless energy transmission Time Reversal Mirror (Time Reversal Mirror, TRM). Background technique [0002] Wireless Power Transfer (WPT) refers to the wireless transmission of energy from the power source to the load. Compared with the traditional wired energy transmission method, WPT does not require power transmission cables, which is convenient, flexible, and has urgent application needs and broad prospects. Research on WPT has also attracted the attention of the scientific and industrial circles. The existing WPT technologies include magnetic induction technology, magnetic coupling resonance technology, and microwave wireless energy transmission technology. According to the characteristics of various technologies, it has been gradually applied in various applicable scenarios. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/20
Inventor 包金龙赵德双王秉中
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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