Edmond J. Violette, L. Roger Espeland, Kenneth C. Allen, and F. Schwering

Abstract:

Measurements of millimeter wave propagation in urban areas at 9.6, 28.8 and 57.6 GHz, and a determination of signal levels reflected from several building surfaces, were made to study wave propagation characteristics in a city environment. Principal emphasis was on the evaluation of communications link reliability, detectability and usable bandwidth as a function of position of terminals. Reflected signal level measurements were performed on building surfaces of concrete aggregate, painted smooth concrete with protruding ribs, brick, and metal siding. Multipath measurements were recorded as a function of distance for several runs over paths of about 1 kilometer in the center of the Denver metro area. Non-line-of-sight observations showed a large number of substantial signals arriving from a wide range of angles. This report contains the results and analysis from single-path and multipath reflections recorded for the study. Included are an evaluation of multipath effects for both urban and non-urban line-of-sight path and measurements of signals received on nonline-of-sight paths, using edge diffraction effects.

This research and development technical report was submitted to U. S. Army Communications-Electronics Command (CECOM).

Keywords: millimeter wave; millimeter-wave propagation

Disclaimer: Certain commercial equipment, components, and software may be identified in this report to specify adequately the technical aspects of the reported results. In no case does such identification imply recommendation or endorsement by the National Telecommunications and Information Administration, nor does it imply that the equipment or software identified is necessarily the best available for the particular application or uses.

For questions or information on this or any other NTIA scientific publication, contact the ITS Publications Office at ITSinfo@ntia.gov or 303-497-3572.

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