Electromagnetic plane-wave scattering from a sectorial groove in a perfectly conducting plane

• Authors: Deng-How Tsaur , Kao-Hao Chang
• Languages of publication: EN

Abstracts

EN

Scattering characteristics of plane waves by a sectorial groove in a perfectly conducting plane are investigated. Both the transverse magnetic (TM) and transverse electric (TE) polarizations of the incident wave are considered. Judicious use of the region-matching technique provides a rigorous series solution to the problem. The analyzed region is separated into two sub-regions by choosing a semi-circular auxiliary boundary. Thefield in each sub-region is expanded as a summationof proper wave functions with unknown coefficients. Enforcing the matching of conditions on the auxiliary boundary and of boundary condition on the circular-arc surface of the groove leads to a linear set of equations and the unknown coefficients are then determined. Numerical results demonstrate the influence of central angles of the sectorial groove on echo width, far-field pattern and near-field distribution. The presented geometry is easily applicable to the design and fabrication of a grating structure for optical switches and tunable filters.

Keywords

EN

electromagnetic scattering; plane waves; groove; series solution

Discipline

• 02.60.Lj: Ordinary and partial differential equations; boundary value problems
• 41.20.Jb: Electromagnetic wave propagation; radiowave propagation(for light propagation, see 42.25.Bs; for electromagnetic waves in plasma, see 52.35.Hr; for atmospheric, ionospheric, and magnetospheric propagation, see 92.60.Ta, 94.20.Bb, and 94.30.Tz, respectively; see also 94.05.Pt Wave/wave, wave/particle interactions, in space plasma physics)
• 42.25.Fx: Diffraction and scattering
• 42.68.Mj: Scattering, polarization(see also 92.60.Ta Electromagnetic wave propagation and 92.60.Vb Radiative processes, solar radiation in meteorology)
• 92.60.Ta: Electromagnetic wave propagation

• Publisher: De Gruyter Open
• Journal: Open Physics
• Year: 2009
• Volume: 7
• Issue: 1
• Pages: 160-167

Dates

published

1 - 3 - 2009

online

8 - 1 - 2009

Contributors

author

Deng-How Tsaur

• Department of Harbor and River Engineering, National Taiwan Ocean University, No.2, Beining Rd., Jhongjheng District, Keelung City, 202-24, Taiwan

author

Kao-Hao Chang

• Department of Harbor and River Engineering, National Taiwan Ocean University, No.2, Beining Rd., Jhongjheng District, Keelung City, 202-24, Taiwan

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Identifiers

DOI

10.2478/s11534-008-0137-7