Radiation pattern of a borehole radar antenna
January 1, 2002
To understand better how a borehole antenna radiates radar waves into a formation, this phenomenon is simulated numerically using the finite-difference, time-domain method. The simulations are of two different antenna models that include features like a driving point fed by a coaxial cable, resistive loading of the antenna, and a water-filled borehole. For each model, traces are calculated in the far-field region, and then, from these traces, radiation patterns are calculated. The radiation patterns show that the amplitude of the radar wave is strongly affected by its frequency, its propagation direction, and the resistive loading of the antenna.
Citation Information
Publication Year | 2002 |
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Title | Radiation pattern of a borehole radar antenna |
DOI | 10.1117/12.462190 |
Authors | K.J. Ellefsen, D.L. Wright |
Publication Type | Conference Paper |
Publication Subtype | Conference Paper |
Index ID | 70025065 |
Record Source | USGS Publications Warehouse |