### Abstract

The problem of transverse electric plane wave scattering from a rectangular channel which is engraved in a perfect conducting plane is investigated. A Fourier transform technique is employed to express the scattered field in the spectral domain in terms of parallel‐plate waveguide modes. The boundary conditions are enforced on the conducting surface and the channel aperture to obtain simultaneous equations for the transmitted field inside the channel. The simultaneous equations are solved to represent the transmitted field in a series form. By using the stationary phase approximation, the exact expression for the far‐zone scattered field is obtained and the echo width behavior is numerically studied in terms of the scattering angle, frequency, and channel size. It is found that the behavior of the echo width versus the channel depth exibits resonance irrespective of the size of the channel width. An approximate series expression (Kirchhoff solution) for the echo width is valid for high‐frequency scattering regimes (a > 2 λ). We also present an approximate closed form solution for nadir backscattering which is valid when a > 0.2λ.

Original language | English |
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Pages (from-to) | 663-673 |

Number of pages | 11 |

Journal | Radio Science |

Volume | 28 |

Issue number | 5 |

DOIs | |

Publication status | Published - Jan 1 1993 |

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### All Science Journal Classification (ASJC) codes

- Earth and Planetary Sciences(all)
- Electrical and Electronic Engineering
- Condensed Matter Physics
- Computer Networks and Communications
- Atmospheric Science
- Computers in Earth Sciences
- Geochemistry and Petrology
- Geophysics
- Instrumentation

### Cite this

*Radio Science*,

*28*(5), 663-673. https://doi.org/10.1029/93RS01371

**An analysis of transverse electric scattering from a rectangular channel in a conducting plane.** / Park, Tah J.; Eom, Hyo J.; Yoshitomi, Kuniaki.

Research output: Contribution to journal › Article

*Radio Science*, vol. 28, no. 5, pp. 663-673. https://doi.org/10.1029/93RS01371

}

TY - JOUR

T1 - An analysis of transverse electric scattering from a rectangular channel in a conducting plane

AU - Park, Tah J.

AU - Eom, Hyo J.

AU - Yoshitomi, Kuniaki

PY - 1993/1/1

Y1 - 1993/1/1

N2 - The problem of transverse electric plane wave scattering from a rectangular channel which is engraved in a perfect conducting plane is investigated. A Fourier transform technique is employed to express the scattered field in the spectral domain in terms of parallel‐plate waveguide modes. The boundary conditions are enforced on the conducting surface and the channel aperture to obtain simultaneous equations for the transmitted field inside the channel. The simultaneous equations are solved to represent the transmitted field in a series form. By using the stationary phase approximation, the exact expression for the far‐zone scattered field is obtained and the echo width behavior is numerically studied in terms of the scattering angle, frequency, and channel size. It is found that the behavior of the echo width versus the channel depth exibits resonance irrespective of the size of the channel width. An approximate series expression (Kirchhoff solution) for the echo width is valid for high‐frequency scattering regimes (a > 2 λ). We also present an approximate closed form solution for nadir backscattering which is valid when a > 0.2λ.

AB - The problem of transverse electric plane wave scattering from a rectangular channel which is engraved in a perfect conducting plane is investigated. A Fourier transform technique is employed to express the scattered field in the spectral domain in terms of parallel‐plate waveguide modes. The boundary conditions are enforced on the conducting surface and the channel aperture to obtain simultaneous equations for the transmitted field inside the channel. The simultaneous equations are solved to represent the transmitted field in a series form. By using the stationary phase approximation, the exact expression for the far‐zone scattered field is obtained and the echo width behavior is numerically studied in terms of the scattering angle, frequency, and channel size. It is found that the behavior of the echo width versus the channel depth exibits resonance irrespective of the size of the channel width. An approximate series expression (Kirchhoff solution) for the echo width is valid for high‐frequency scattering regimes (a > 2 λ). We also present an approximate closed form solution for nadir backscattering which is valid when a > 0.2λ.

UR - http://www.scopus.com/inward/record.url?scp=0027664524&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0027664524&partnerID=8YFLogxK

U2 - 10.1029/93RS01371

DO - 10.1029/93RS01371

M3 - Article

VL - 28

SP - 663

EP - 673

JO - Radio Science

JF - Radio Science

SN - 0048-6604

IS - 5

ER -