The scattering of a far-field source by perfectly conducting targets above a semi-infinite lossy medium is studied. An analytical solution is applied to the electromagnetic scattering problem with the Cylindrical Wave Approach. Interaction of a plane-wave field with the cylindrical targets is expressed through expansions into cylindrical waves, and a spectral approach is used to deal with the interaction of the scattered field and the interface. The method allows modelling the interaction of an external source with a biological medium, in the presence of external metallic objects. In the numerical examples, the electrical parameters of a muscle are used to model the biological tissue. Application to cases of interest for the total field transmitted in the muscle is investigated for both TM and TE polarization states. Penetration of the electromagnetic field is evaluated, both at the ISM frequency of 2.4 GHz and in the millimeter frequency range at 28 GHz.

中文翻译：

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光谱域方法对生物介质上方金属靶的电磁散射

研究了在半无限有损介质上方完美传导目标对远场源的散射。利用圆柱波方法将解析解应用于电磁散射问题。平面波场与圆柱目标的相互作用通过扩展为圆柱波来表达，并使用光谱方法来处理散射场与界面的相互作用。该方法允许在存在外部金属物体的情况下对外部源与生物介质的相互作用进行建模。在数值示例中，肌肉的电参数用于对生物组织进行建模。针对TM和TE极化状态，研究了在肌肉中传输的总场感兴趣的情况下的应用。