DESIGN OF A PARALLEL PLATE MICROWAVE LENS
Abstract
Two parallel plate microwave lenses were investigated. These lenses operate on the principle that microwave energy will propagate between parallel conducting sheets with a phase velocity exceeding that of light; hence, this 'medium' has an apparent index of refraction which is less than unity. When the bounding contours of such an assembly of plates are suitably shaped, then the assembly is analogous to an optical lens, and can be made to focus microwave energy. In this case, the bounding contours have the form of ellipsoids of revolution, and the equations and parameters necessary to shape the contours properly are derived and discussed. A complete design is described for a 5 foot square lens with focal length of 5 feet and an index of refraction of 9/16, operated at a wavelength of 12.5 cm. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 22, 1962
- Accession Number
- AD0285513
Entities
People
- William R. Flynt
- Winfield W. Salisbury