Wireless powering of sensors in free space and concrete medium

2009 13th International Symposium on Antenna Technology and Applied Electromagnetics and the Canadian Radio Science Meeting Pub Date : 2009-03-24 DOI:10.1109/ANTEMURSI.2009.4805101

S. Punjala, K. Makki

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引用次数: 5

Abstract

The whole idea of this paper is to power sensors buried inside concrete at a certain depth by using a reconfigurable PIFA antenna [2] and to power sensors in free space. The PIFA antenna inside concrete has to absorb power from the incident plane wave on the surface of concrete. Electric field which is incident on concrete would decay according to the parameters of concrete. The purpose of this paper is to show that an antenna with a fractal surface is an ideal choice to power a sensor inside concrete since the surface area is much larger. Any device in free space can by powered from the RF energy that its antenna receives from another antenna. Since the antenna [1] is large we can make sure that more than one sensor could be powered by a single antenna at a single time inside concrete. Antennas in free space are powered based on the electric field on its surface. Reconfigurable antennas can be used for powering sensors for transmission from inside the surface of concrete which would provide a lot of advantages. Concrete was modeled in HFSS according to the parameters in previous research papers [2].

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自由空间和混凝土介质中传感器无线供电

本文的总体思路是利用可重构PIFA天线[2]为埋在混凝土内部一定深度的传感器供电，并在自由空间为传感器供电。混凝土内部的PIFA天线需要吸收入射到混凝土表面的平面波的功率。入射到混凝土上的电场会随着混凝土参数的变化而衰减。本文的目的是表明，具有分形表面的天线是为混凝土内部传感器供电的理想选择，因为表面面积要大得多。自由空间中的任何设备都可以通过其天线从另一天线接收到的射频能量来供电。由于天线[1]很大，我们可以确保混凝土内部的多个传感器可以同时由单个天线供电。自由空间中的天线以其表面的电场为动力。可重构天线可用于为从混凝土表面内部传输的传感器供电，这将提供许多优点。根据前人研究论文[2]中的参数，在HFSS中对混凝土进行建模。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2009 13th International Symposium on Antenna Technology and Applied Electromagnetics and the Canadian Radio Science Meeting

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