THE HELICAL ANTENNA AND ITS PROBLEMS.
Abstract
Problems are discussed which result from the use of helical antennas in a dissipative medium at low frequencies. A network model for helical antennas surrounded by rock with the conductivity sigma and the dielectrical constant epsilon, is used for deriving theoretical expressions for the real part and imaginary part of the input impedance in the case of quasistationary currents. The field structure to be expected and the different types of propagation are discussed in brief. The antennas examined by experiment are described and the measured results are compared with the theoretical values. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 1967
- Accession Number
- AD0660543
Entities
People
- Wolfram Bitterlich
Organizations
- University of Innsbruck