Accession Number : ADD008329

Title :   High Frequency Roll-Bar Loop Antenna.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE ARMY WASHINGTON DC

Personal Author(s) : Czerwinski,Watson P

Report Date : 12 Aug 1980

Pagination or Media Count : 4

Abstract : Described is a vehicular mounted loop antenna which operates as an NVIS radio communication antenna over one range of frequencies and as a vertically polarized whip antenna over another range of frequencies corresponding to the frequency range of a radio communication set equipped with a conventional whip antenna. A coupling loop of variable area and a transmitting loop are positioned in a common vertical plane on a horizontally disposed base member, with the coupling loop positioned within the transmitting loop. A variable capacitor is in circuit with, and is an integral element of, the transmitter loop to provide resonance over the desired operating frequency range. (Author)

Descriptors :   *Patents, *Loop antennas, *Radio transmitters, Vehicle equipment, Whip antennas, Integrated systems, Variable capacitors, Coupling(Interaction), Range(Extremes), Transmitters, Loops, Antennas, Transmitting, Frequency

Subject Categories : Electrical and Electronic Equipment
      Non-radio Communications

Distribution Statement : APPROVED FOR PUBLIC RELEASE