Accession Number : AD0671971

Title :   SOME PROPERTIES OF HELICAL ANTENNAS AT LOW FREQUENCIES.

Descriptive Note : Scientific rept., Mar 67-Jan 68,

Corporate Author : INNSBRUCK UNIV (AUSTRIA)

Personal Author(s) : Lukavec,Rafael ; Elster,Tilman

Report Date : 20 APR 1968

Pagination or Media Count : 41

Abstract : Experimental examination and results of self-resonant helical antennas in the frequency range between 25 kc and several Mc/sec are described. The dimensions of these antennas are several orders of magnitude smaller than the wavelength in the surrounding medium. The influences of two different media surrounding the antenna, namely air and water, on the input impedance and resonant frequency of the antennas are described. The electrical properties of water were studied separately. It is shown how to obtain the quantities of a network model for describing such antennas, from the measured data. (Author)

Descriptors :   (*HELICAL ANTENNAS, ELECTRICAL PROPERTIES), RESONANCE, ELECTRICAL IMPEDANCE, VELOCITY, PHASE, MATHEMATICAL MODELS, AIR, WATER, LOW FREQUENCY, DIELECTRIC PROPERTIES, EXPERIMENTAL DATA, AUSTRIA

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE