US Government As Represented by the Secretary of the Army

Bernard E Feigenbaum

Donn V Campbell

Palemon W Dubowicz

Kenneth J Loffer

Francis G Loso

A dual-band antenna in which EHF signals are connected to one end of a wauide and radiated from the other and wherein a half-dipole for VHF signals is connected to the radiating end of the waveguide and the other half-dipole for VHF is formed by a shield that is coaxial with and surrounds all of the waveguide except the radiating end. VHF signals are coupled to the half-dipole formed by the shield via a matching network.

Dual band EHF, VHF vehicular whip antenna

A plurality of dual feed half square wave antenna element (each of U-shaped onfiguration) are arranged in a log-periodic structure. The antenna elements are feed at the current loops; i.e., at the corners of the U-shaped antenna elements. A dual inphase feed produces vertical polarization signals of low angle radiation, and a dual antiphase feed produces horizontal polarization signals of high angle radiation.

Log - periodic HF antenna system

A broadband H.F. directional sky-wave antenna system comprises a plurality f interconnected, vertical, zig-zag, antenna sections of predetermined increasing height. A counterpoise is utilized to balance the antenna. Power is coupled to the shortest zig-zag section via an impedance matching transformer. A resistance is used to terminate the antenna in its characteristic impedance.

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Neptune, NJ, United States of America

Bernard E Feigenbaum