多線状導体で囲まれた領域内部の電磁界分布の一検討

摘要

Authors have been trying to estimate theoretically the EM wave reducing effectiveness (or rejection effectiveness) by the arrays of conductive thin wires. The calculation results revealed the suppression effectiveness and the near field pattern. As an example, the scattering and shielding of conductive thin wire linear-arrays for the TM plane wave were estimated. Not only the scattering of external EM waves but also shielding of some enclosures composed with thin wire arrays were studied. This report treats the latter case i.e. the thin wire array lined on a circle making a tube is analyzed to evaluate the shielding effectiveness as well as the field distributions in and around the structure. The near fields formed by the wire system that includes an active wire or a wire driven by an external power source are shown.%著者らは、細線導体による散乱現象に注目し、これを利用することで細線導体配列系が電磁波の抑圧・遮掛こ有効であることを述べてきた。特に板状に配列した細線導体系の電磁波散乱を取り上げ、外来平面波の抑圧効果の評価を行ってきた。さらに、平面照射問題のみならず、細線導体系の特定の導体を駆動源としたときの電磁界形成についても検討を加え、不要放射の1モデルとしての検討を報告した。本論文では、閉じた曲線上に配列した多線条導体が、内部の駆動線からの電磁放射を抑圧する事を検討し、具体的には円周配列の場合の周囲電界分布を算定評価した。さらに広がりを持って周期的に配列した多線状導体系の遮蔽効果も検討した。