USA As Represented by Secretary of the Navy

New Jersey Institute of Technology

Kenneth P Stewart

Brian Carl Hicks

Haim Grebel

Oren Sternberg

Karl Dieter Moeller

Paul Shelton Ray

Henrique Schmitt

Emil J Polisensky

Tracy Clarke

Norman R Mcglothlin, Jr

Nagini P Dalal

Stephen J Burns

Namir E Kassim

An active antenna system for receiving electromagnetic radiation at frequencies below 100 MHz. The system includes a vertical support mast; a front end electronics unit including an active balun, the front end electronics unit affixed to the support mast; two crossed-dipole antennas affixed oriented at about 90 degrees to each other, each crossed-dipole antenna having two arms formed of electrically conductive material, each arm having an isoceles triangular frame with an apex of the frame electrically connected to a feedpoint of the front end electronics unit, each arm also having a longitudinal member extending from the apex to the center of the base of the triangular shape and a cross member extending between sides of the triangular frame. The system can operate independently or as part of a long wavelength array for astronomical radio telescope applications.

Wide-band active antenna system for HF/VHF radio reception

A non-periodic reflection beamsplitter or reflector for use in an interferometer. The interferometer employs non-periodic reflectors or a non-periodic beamsplitter in order to produce interference patterns to analyze. The non-periodic reflectors or beamsplitters may be concentrically arranged reflectors having equal area. The beamsplitter consists of two adjacent non-periodic structures having complementary reflection and transmission patterns.

Non-periodic wavefront dividing interferometer

Growing community of inventors

Upper Marlboro, MD, United States of America

Kenneth P Stewart