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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Sato, K. Kozima, H. Masuzawa, H. Manabe, T. Ihara, T. Kasashima, Y. Yamaki, K. |
| Copyright Year | 1995 |
| Description | Author affiliation: Commun. Res. Lab., Minist. of Posts & Telecommun., Tokyo, Japan (Sato, K.; Kozima, H.; Masuzawa, H.; Manabe, T.; Ihara, T.) |
| Abstract | The reflection characteristics and refractive indices of construction materials in the millimeter wave bands are needed for development of millimeter-wave application systems such as indoor communication systems and short-range sensing systems. Because so little experimental data of construction materials at millimeter-wave bands has been available, the authors have measured the reflection and transmission coefficients of a concrete plate, plasterboard, rock wool, a floorboard, a carpet tile, at 57.5, 78.5, and 95.9 GHz. The refractive indices of the materials that can be modeled as a homogeneous dielectric plate with a smooth surface were estimated by the combined use of reflection and transmission data. The refractive indices of a concrete plate, plasterboard, a floorboard, and rock wool at 57.5 GHz were found to be 2.55-j0.084, 1.50-j0.01, 1.98-j0.083, and 1.26-j0.005, respectively. These indices showed little frequency dependence in the measured frequency range, except for that of the floorboard, which varied about 10%. The authors also measured the reflection characteristics of materials with inhomogeneous structures or rough surfaces, and found that the specular reflection from a concrete plate and a floorboard can be reduced significantly by covering them with carpet tiles with rough surfaces. |
| Starting Page | 449 |
| Ending Page | 453 |
| File Size | 539946 |
| Page Count | 5 |
| File Format | |
| ISBN | 078032742X |
| ISSN | 10903038 |
| DOI | 10.1109/VETEC.1995.504907 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 1995-07-25 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Reflection Building materials Millimeter wave measurements Millimeter wave communication Concrete Dielectric materials Wool Tiles Rough surfaces Surface roughness |
| Content Type | Text |
| Resource Type | Article |
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