C. Yeh

University of California, Los Angeles, Los Angeles, California, United States

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Publications (3)6.55 Total impact

  • W. E. Salmond · C. Yeh
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    ABSTRACT: This paper deals with electromagnetic wave propagation in a longitudinally magnetized, ferrite‐filled elliptical waveguide. Using the wave equations and boundary conditions for a ferrite‐filled waveguide of arbitrary cross‐sectional shape, it is shown that for an elliptical cross section the characteristic equations for the propagation constant take the form of even and odd infinite determinants. Solutions for the characteristic equations are obtained for various values of applied field strength, saturation magnetization, and waveguide ellipticity. The existence of three types of cutoff conditions is demonstrated.
    No preview · Article · Aug 1970 · Journal of Applied Physics
  • W. E. Salmond · C. Yeh
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    ABSTRACT: Detailed analyses were carried out for the Faraday effect of electromagnetic waves propagating in longitudinally magnetized ferrite‐filled elliptical waveguides. Few resemblances were found between the Faraday rotation effect in a circular waveguide and that in an elliptical waveguide. The circular waveguide features strong coupling between the dominant vertically and horizontally polarized modes, whereas in the elliptical ferrite‐filled guide very little mode coupling occurs for large eccentricities.
    No preview · Article · Aug 1970 · Journal of Applied Physics
  • C. Yeh
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    ABSTRACT: The problem of the interaction of obliquely incident microwaves with a plasma column which is moving uniformly in the axial direction is treated analytically. An arbitrary polarization for the incident plane wave is assumed. Two methods in solving this problem are presented. Extensive numerical results for the scattered energy in the backward and broadside directions and the angular distribution of the scattered energy are obtained for various interesting ranges of the parameters involved. It is found that cross‐polarized field components are induced even at normal incidence when the plasma medium is moving with respect to the observer and that cross‐polarized field components disappear at an incident angle θ 0 =sin<sup>-1</sup>(v z /c), where v z is the velocity of the moving plasma and c is the speed of light in vacuum when the plasma column is imbedded in free space.
    No preview · Article · Jan 1970 · Journal of Applied Physics

Publication Stats

24 Citations
6.55 Total Impact Points

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  • 1970
    • University of California, Los Angeles
      • Department of Electrical Engineering
      Los Angeles, California, United States