Accession Number : ADD005888

Title :   Compact Low-Profife Electrically Small VHF Antenna.

Descriptive Note : Patent,


Personal Author(s) : Jones,Howard S , Jr ; Reggia,Frank

Report Date : 18 Jul 1978

Pagination or Media Count : 4

Abstract : This report describes an electrically small antenna designed for operation in the 25 to 50 megahertz frequency range which may be constructed in two basic forms. The first embodiment comprises a conductive coil in the form of a copper ribbon that is electroless-plated on a thin cylindrical silicone fiberglass substrate which is loaded with a ferrite core. The loaded coil assembly comprises a radiating element that operates over a metal ground plane. The second embodiment comprises a coiled ribbon conductor which is electroless copper plated directly on a cylindrical ferrite rod surface. The latter embodiment provides closer coupling of the magnetic field into the ferrite. Each embodiment preferably utilizes variable input and output capacitors which are respectively coupled to a source of RF power and to the ground plane. (Author)

Descriptors :   *Patents, *Antenna configurations, Electrical conductivity, Coils, Very high frequency

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE