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Edge diffracted caustic fields. [spacecraft antenna radiation patterns
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Peters Jr., L. Burnside, W. D. |
| Copyright Year | 1974 |
| Description | The fields near a caustic created by an edge diffraction process are computed using the equivalent current concept. These fields are shown to have the property commonly associated with ray optical analysis or the Geometrical Theory of Diffraction (GTD), e.g., a 90 deg phase shift as the ray passes through the caustic. The present effort is directed toward consideration of the caustic created by an edge diffraction process. Particular attention is focused on electromagnetic excitation. The acoustic excitation for the hard boundary condition is outlined in an appendix. In addition, goal is to establish the extent of the caustic region. This is of particular importance when a ray optical solution involves multiply-diffracted terms in that the minimum size of the body that can be analyzed may be restricted by the extent of the caustic, i.e., the 90 deg phase shift used in ray optical analysis may be introduced only if the caustic is contained on the surface being studied. |
| File Size | 667441 |
| Page Count | 31 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19740014761 |
| Archival Resource Key | ark:/13960/t8qc4sp1s |
| Language | English |
| Publisher Date | 1974-05-01 |
| Access Restriction | Open |
| Subject Keyword | Electronic Equipment Diffraction Paths Antenna Design Conical Bodies Ray Tracing Spacecraft Antennas Electromagnetic Fields Wedges Edges Wave Reflection Antenna Radiation Patterns Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
