ABSORPTION AND TRANSMISSION OF ELECTROMAGNETIC WAVES. PHASE J. INVESTIGATION OF INTERDEPENDENCE OF ABSORBER DESIGN PARAMETERS
Abstract
IT IS SHOWN, THAT A THIN, HOMOGENEOUS, DISSIPATIVE LAYER IN FRONT OF A METAL PLATE ABSORBS ELECTROMAGNETIC WAVES OVER A WIDE RANGE OF FREQUENCIES (reflection coefficient R equal to or less than 10%). The frequency range is extended towards higher frequencies by arranging the dissipative layer a small distance from the metal plate. The frequency interval with optimal matching (R equal to or less than 10%) calculated from measured values of relative dielectric constant and relative permeability of the ferrite Ferramic E is 1:10 without and 1:20 with air layer between metal plate and dissipative layer. Measurements with a similar ferrite, Ferramic E 1960, in principle confirm the predetermined results. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 30, 1961
- Accession Number
- AD0272110
Entities
People
- H.w. Helberg
Organizations
- University of Göttingen