RADIATION FROM SOME PERIODIC STRUCTURES EXCITED BY A WAVEGUIDE.
Abstract
The problem of radiation from a set of semi-infinite parallel plates, as well as those of radiation from uniform and modulated corrugated surfaces excited by a parallel plane waveguide, are solved exactly. The method used is an extension of the conventional mode matching technique so that it is applicable to open structures. A Fourier transform taken perpendicular to the plates and matching across the plane which separates the structure and the semiinfinite region into which it is radiating, taken together with certain periodicity properties of the unknown functions in the transform domain, allows generation of an infinite set of algebraic equations which may be solved exactly. From the solution of these equations nearly all results of interest may be obtained: the reflection coefficient, the mode coefficients, which represent the field in the structure, the radiation pattern, the k-beta diagram, and the amplitudes of the surface waves launched. Fairly extensive numerical results for these quantities were obtained. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1965
- Accession Number
- AD0623133
Entities
People
- D. S. Karjala
- Raj Mittra
Organizations
- University of Illinois Urbana–Champaign