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The crossed antenna as an electric field probe with attached cable

Authors

  • Ronold W. P. King


Abstract

The properties of an electric field probe that consists of two mutually perpendicular conductors attached to the end of a long coaxial line are investigated with a view to minimizing the pickup by the cable. The structure is treated as a junction-loaded crossed-wire antenna. Coupled integral equations for the currents are derived and solved approximately. It is shown that the contribution to the voltage across the load can be kept relatively small compared with the contributions by the active elements of the probe if a correct design is maintained. The analysis is carried out specifically for a normally incident plane wave with components of the electric field parallel to both the cable and the elements of the probe.

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