Nicholas DeMinco; Robert T. Johnk; Paul M. McKenna; Chriss A. Hammerschmidt; J. Wayde Allen

Abstract: This report describes one of three free-field radio frequency (RF) measurement systems that are currently being developed by engineers at the Institute for Telecommunication Sciences (NTIA/ITS). The objective is to provide estimates of the electrical properties of the ground (permittivity and conductivity) over which the measurement systems are deployed. This measurement system uses transmission loss measurements between two monopoles placed close to the ground at specific separation distances. Soil properties are extracted by comparing measured data with known analytical models and optimizing the results.

Keywords: signal processing; antenna; transmission loss; radio-wave propagation; time domain; frequency domain; deconvolution; Fourier transform; gating; monopole antenna; reflectivity; propagation measurement; S-parameters

For technical information concerning this report, contact:

Nicholas DeMinco
Institute for Telecommunication Sciences
(303) 497-3660
ndeminco@ntia.doc.gov

To request a reprint of this report, contact:

Lilli Segre, Publications Officer
Institute for Telecommunication Sciences
(303) 497-3572
LSegre@ntia.gov

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.

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