### Abstract

Analysis of the electromagnetic excitation of a conducting wire, enclosed in a rectangular cavity, by an incident plane wave through a small aperture is presented. Two approaches, the method of moments and the equivalent circuit theory, are used to calculate resonant frequencies and the wire current. Bethe’s small–hole theory and thin wire approximation are employed to simplify the numerical computations. When the plane wave excites a resonant mode of the cavity, substantial numerical simplifications are afforded. Under resonance condition, the wire current is much larger than it would be if the wire was in free space. Comparisons of various physical quantities evaluated by these two approaches are made.

Original language | English (US) |
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Pages (from-to) | 311-324 |

Number of pages | 14 |

Journal | Journal of Electromagnetic Waves and Applications |

Volume | 4 |

Issue number | 4 |

DOIs | |

State | Published - 1990 |

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### ASJC Scopus subject areas

- Electrical and Electronic Engineering
- Electronic, Optical and Magnetic Materials
- Physics and Astronomy(all)

### Cite this

**Electromagnetic excitation of a wire enclosed in a rectangular cavity by a plane wave incident on a small aperture.** / Ma, B. L.; Lu, I. T.

Research output: Contribution to journal › Article

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TY - JOUR

T1 - Electromagnetic excitation of a wire enclosed in a rectangular cavity by a plane wave incident on a small aperture

AU - Ma, B. L.

AU - Lu, I. T.

PY - 1990

Y1 - 1990

N2 - Analysis of the electromagnetic excitation of a conducting wire, enclosed in a rectangular cavity, by an incident plane wave through a small aperture is presented. Two approaches, the method of moments and the equivalent circuit theory, are used to calculate resonant frequencies and the wire current. Bethe’s small–hole theory and thin wire approximation are employed to simplify the numerical computations. When the plane wave excites a resonant mode of the cavity, substantial numerical simplifications are afforded. Under resonance condition, the wire current is much larger than it would be if the wire was in free space. Comparisons of various physical quantities evaluated by these two approaches are made.

AB - Analysis of the electromagnetic excitation of a conducting wire, enclosed in a rectangular cavity, by an incident plane wave through a small aperture is presented. Two approaches, the method of moments and the equivalent circuit theory, are used to calculate resonant frequencies and the wire current. Bethe’s small–hole theory and thin wire approximation are employed to simplify the numerical computations. When the plane wave excites a resonant mode of the cavity, substantial numerical simplifications are afforded. Under resonance condition, the wire current is much larger than it would be if the wire was in free space. Comparisons of various physical quantities evaluated by these two approaches are made.

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U2 - 10.1163/156939390X00564

DO - 10.1163/156939390X00564

M3 - Article

VL - 4

SP - 311

EP - 324

JO - Journal of Electromagnetic Waves and Applications

JF - Journal of Electromagnetic Waves and Applications

SN - 0920-5071

IS - 4

ER -