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Polarization deflection non-sensitive wireless power and information transmission system

An information transmission system and wireless power technology, which is applied in the field of polarization deflection insensitive wireless power and information transmission systems, and can solve problems such as affecting the working distance of wireless sensor networks, and receiving/transmitting antenna polarization misalignment.

Active Publication Date: 2021-02-23
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the polarization deflection of electromagnetic waves, the polarization of the receiving / transmitting antenna is misaligned, which seriously affects the working distance of the wireless sensor network.

Method used

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  • Polarization deflection non-sensitive wireless power and information transmission system
  • Polarization deflection non-sensitive wireless power and information transmission system
  • Polarization deflection non-sensitive wireless power and information transmission system

Examples

Experimental program
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Embodiment 1

[0015] attached image 3 The schematic diagram of the working circuit of the polarization deflection insensitive wireless power and information transmission system is shown. When the dual-polarized antenna (vertical polarization direction) in the base station module emits linearly polarized electromagnetic waves, the linearly polarized electromagnetic waves will be transmitted to the rectenna. Due to the polarization deflection of the linearly polarized electromagnetic wave and the dual-polarized antenna (vertical polarization direction) in the rectenna, the deflection angle is φ, and the linearly polarized electromagnetic wave will be decomposed into two parts, which are respectively vertically and horizontally transmitted by the dual-polarized antenna in the rectenna. polarized direction, and acts as a quadrature coupler input (P 1 ), isolation (P 4 ) port input voltage, can be calculated as

[0016]

[0017]

[0018] The orthogonal coupler has special coupling, and ...

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PUM

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Abstract

The invention discloses a polarization deflection non-sensitive wireless power and information transmission system. The system comprises a base station module and a rectification antenna. The base station module is composed of a transmitting circuit and a receiving circuit. A transmitting circuit in the base station module is composed of an oscillator, a coupler, a power amplifier, a control circuit, a filter I and a dual-polarized antenna. A receiving circuit in the base station module is composed of a dual-polarized antenna, a filter II, a low-noise amplifier, a mixer, an ADC data sampler and a baseband signal processing circuit. The rectification antenna is composed of a dual-polarized antenna, a quadrature coupler, a quarter-wavelength short-circuit branch, a rectifier I and a rectifier II. The vertical polarization port and the horizontal polarization port of the dual-polarized antenna are respectively connected with the input port and the isolation port of the quadrature coupler;rectifiers I and II are respectively connected with a straight-through port and a coupling port of the quadrature coupler; and the quarter-wave short-circuit branch is connected with input ports of the rectifiers I and II to suppress second harmonics so as to enhance the rectification efficiency.

Description

technical field [0001] The invention relates to a wireless power and information transmission system, in particular to a polarization deflection insensitive wireless power and information transmission system. Background technique [0002] In recent years, wireless power transfer technology has effectively solved the problem of battery maintenance in wireless sensor networks. However, due to the polarization deflection of electromagnetic waves, the polarization of the receiving / transmitting antenna is misaligned, which seriously affects the working distance of the wireless sensor network. Therefore, there is an urgent need for additional information transmission circuits to assist wireless sensor networks in identifying, tracking and distance adaptation. Contents of the invention [0003] Based on the above problems, the present invention proposes a polarization deflection-insensitive wireless power and information transmission system, which realizes high-efficiency wirele...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/40H04B7/10H04W88/08
CPCH04B1/40H04W88/08H04B7/10
Inventor 张浩许进阴玥
Owner NORTHWESTERN POLYTECHNICAL UNIV
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