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A TEM cell design to study electromagnetic radiation exposure from cellular phones.

机译:TEM电池设计用于研究手机的电磁辐射暴露。

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摘要

A transverse electromagnetic (TEM) cell was designed and fitted with a double ended monopole antenna as a signal leader in order to couple electromagnetic radiation from GSM 900 and 1800 commercial cellular phones into a usable area of the cell. The double-ended monopole antenna acts as a signal leader for incoming and outgoing signals between the TEM cell’s outer surfaces. Biological subjects can be placed at the usable area for biological effects of electromagnetic radiation studies.;The amplitudes of the forward and backward travelling mode excitation and the input impedance of the signal leader were analyzed in the study. It showed good agreement with known results from other experiments and lab simulations. The electric field distribution was studied with such varying parameters as the cellular phone position, polarization, dialing type, and dialing frequency.;Analysis showed that the electric field uniformity can be improved with either the use of a shorter signal leader or by reducing the dimensions (size) of the TEM cell. The test area available in this design is large enough for a Petri dish, such that electromagnetic radiation studies can be performed. Another advantage of the setup is that, unlike cuvettes, cells can be of a single layer (grown on the dish) and thus the shielding effects of one cell on the other while under electromagnetic radiation can be minimized.
机译:设计了一个横向电磁(TEM)单元,并安装了一个双端单极天线作为信号引导器,以便将来自GSM 900和1800商用蜂窝电话的电磁辐射耦合到该单元的可用区域中。双端单极天线充当TEM单元外表面之间传入和传出信号的信号引导器。可以将生物对象放置在电磁辐射研究的生物效应可用区域。研究中分析了前进和后退行驶模式激励的幅度以及信号线的输入阻抗。它与其他实验和实验室模拟的已知结果显示出很好的一致性。用蜂窝电话的位置,极化,拨号类型和拨号频率等各种参数研究了电场分布;分析表明,使用较短的信号引线或减小尺寸可以改善电场均匀性(尺寸)的TEM单元。此设计中可用的测试区域足够用于培养皿,因此可以进行电磁辐射研究。该装置的另一个优点是,与试管不同,细胞可以是单层的(生长在培养皿上),因此在电磁辐射下一个细胞对另一细胞的屏蔽作用可以最小化。

著录项

  • 作者单位

    University of Missouri - Columbia.;

  • 授予单位 University of Missouri - Columbia.;
  • 学科 Engineering Biomedical.;Biophysics Medical.;Engineering Electronics and Electrical.
  • 学位 M.S.
  • 年度 2008
  • 页码 99 p.
  • 总页数 99
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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