Measurement of the circuit properties of insulated linear antennas in a dissipative medium

The experimental system for measuring the electrical properties of antennas embedded in a dissipative medium is discussed. Measured input admittances of linear antennas with insulations of different sizes and dielectric constants are compared with the theoretical results. Measured current distributions of insulated antennas with the dielectric constant of the insulation comparable to that of the surrounding medium are compared with theory and are found to be in good agreement. The uncertainties in the measurement are discussed.