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The Diffraction of Oblique Surface Waves by a Right-Angle Bend.


AD606513

Publication Date 1964
Personal Author Karp, S. N.; Chu, T. S.
Page Count 2
Abstract The diffracted field that arises when an incident electromagnetic surface wave strikes the edge of a right-angle bend at an oblique angle is investigated. One face of the bend supports the surface wave and the other face is a perfect conductor. This diffraction problem is related to the scanning surface wave antennas. An analysis of oblique surface waves on an infinite impedance plane is first presented graphically. We treat two cases. In one case the edge of the bend is parallel, and, in the other case, perpendicular, to the perfectly conducting direction of the impedance plane. When the surface wave is incident normally, these special cases reduce to the normal TM and TE surface waves respectively. The mathematical formalism of the first case may bb y be reduced to that of a two dimensional TM problem which has been solved previously. The second case involves two coupled mixed boundary conditions and is exactly analyzed in detail. The effect of the obliquity on the reflection coefficient and the radiation pattern under various conditions is discussed. (Author)
Keywords
  • ELECTROMAGNETIC WAVES
  • ANTENNAS
  • DIFFRACTION
  • WAVEGUIDE BENDS
  • ELECTRICAL IMPEDANCE
  • PROPAGATION
  • REFLECTION
  • VECTOR ANALYSIS
  • SCANNING
  • SURFACE WAVE ANTENNAS
Corporate Authors Courant Inst of Mathematical Sciences New York Univ N Y
Document Type Technical Report
NTIS Issue Number 196501
Contract Number
  • AF19 628 3868
The Diffraction of Oblique Surface Waves by a Right-Angle Bend.
The Diffraction of Oblique Surface Waves by a Right-Angle Bend.
AD606513

  • ELECTROMAGNETIC WAVES
  • ANTENNAS
  • DIFFRACTION
  • WAVEGUIDE BENDS
  • ELECTRICAL IMPEDANCE
  • PROPAGATION
  • REFLECTION
  • VECTOR ANALYSIS
  • SCANNING
  • SURFACE WAVE ANTENNAS
  • AF19 628 3868
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