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Wave attenuation and mode dispersion in a waveguide coated with lossy dielectric material
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Lo, Y. T. Lee, S. W. Lee, C. S. Chuang, S. L. |
| Copyright Year | 1984 |
| Description | The modal attenuation constants in a cylindrical waveguide coated with a lossy dielectric material are studied as functions of frequency, dielectric constant, and thickness of the dielectric layer. A dielectric material best suited for a large attenuation is suggested. Using Kirchhoff's approximation, the field attenuation in a coated waveguide which is illuminated by a normally incident plane wave is also studied. For a circular guide which has a diameter of two wavelengths and is coated with a thin lossy dielectric layer (omega sub r = 9.1 - j2.3, thickness = 3% of the radius), a 3 dB attenuation is achieved within 16 diameters. |
| File Size | 4773286 |
| Page Count | 67 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19840022076 |
| Archival Resource Key | ark:/13960/t77t2j74m |
| Language | English |
| Publisher Date | 1984-07-01 |
| Access Restriction | Open |
| Subject Keyword | Communications And Radar Wave Attenuation Lossy Media Radar Cross Sections Engine Inlets Frequencies Dielectrics Coatings Wave Dispersion Propagation Modes Thickness Waveguides Kirchhoff Law of Radiation Permittivity 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 |
