Research on Near Field Pattern Effects.
Abstract
Under the present contract, a simple and efficient multiple-plate model has been developed for the aircraft substructures. Using this model, the tail, wings, stabilizer and engine housings can be easily simulated. A three dimensional model (i.e., prolate spheroid) is employed for investigating the radiation from an aircraft fuselage. In addition, high frequency solutions for the electric field due to antennas radiating from a perfectly conducting convex body are developed. The expressions are given in terms of a fixed ray coordinate system which follows the geodesic path on the conducting surface. These expressions are simple, compact, and are given in terms of some well known and tabulated Fock integrals. Furthermore, these expressions reduce to the geometrical optics solution in the 'deep' lit region and recover the Keller's surface ray representation in the deep shadow region. The continuity of the fields across the shadow boundary is also established. A major task of applying the high frequency solution to solve practical problems, (namely, determining the unique geodesic path on the conducting surface), is also accomplished in the case of a prolate spheroid. Numerical results obtained by employing the newly developed solution are in good agreement with eigenfunction solutions and measured results. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 1979
- Accession Number
- ADA079325
Entities
People
- Ning Wang
- Walter Dennis Burnside
Organizations
- Ohio State University