Accession Number : AD0889658
Title : Performance of Toroid Coupled Trees as Antennas.
Descriptive Note : Research and development technical rept.,
Corporate Author : ARMY ELECTRONICS COMMAND FORT MONMOUTH NJ
Personal Author(s) : Johnson, R. F. ; Murphy, K. J. ; Hoverter, R. T. ; Ikrath, K.
Report Date : JUN 1971
Pagination or Media Count : 18
Abstract : Communications over short ranges through dense wooded or jungle terrains remains a major problem for our armies today. An approach to solving this problem is to use a Hybrid Electromagnetic Antenna Coupler (HEMAC) toroid as a transformer-coupler to excite secondary radiation from the vegetation. The combination of the electric and magnetic fields emitted by the toroid are shown to be as effective as a whip antenna for communicating in the wooded areas adjacent to Fort Monmouth. Initial experiments comparing a HEMAC toroid to a whip antenna are discussed. (Author)
Descriptors : (*RADIO TRANSMISSION, JUNGLES), (*ANTENNAS, TREES), TACTICAL WARFARE, COILS, ANTENNA COMPONENTS, COUPLING CIRCUITS.
Subject Categories : Electrical and Electronic Equipment
Radiofrequency Wave Propagation
Distribution Statement : APPROVED FOR PUBLIC RELEASE