Accession Number : ADD016034
Title : Focal Plane Antenna Array for Millimeter Waves.
Descriptive Note : Patent, Filed 28 Apr 92, patented 17 Aug 93,
Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC
Personal Author(s) : Waters, William M
Report Date : 17 Aug 1993
Pagination or Media Count : 10
Abstract : A millimeter wave imaging system receives millimeter wave radiation and provides video imaging signals based thereon. The system comprises an imaging lens for receiving incoming radiation; a focal plane antenna array disposed at the focal plane of the lens on which radiation received by the lens is focussed; and signal processing and display circuitry for processing the output of the antenna array and for producing and displaying corresponding video imaging signals. The focal plane antenna array comprises a planar array of a plurality of conical horns and circular waveguides which, in use, are disposed at the focal plane of the lens; and a microstrip detector assembly coupled to the waveguides for detecting the radiation received thereby. The microstrip detector assembly comprises a dielectric substrate having a plurality of microstrip conductors embedded therein, each microstrip conductor being coupled to a respective one of the waveguides, and a diode detector being connected to each microstrip conductor.
Descriptors : *ANTENNA ARRAYS, *MILLIMETER WAVES, *VIDEO SIGNALS, *TELEVISION CAMERAS, *PATENTS, *VIDICONS, CIRCULAR, DETECTORS, DIELECTRICS, DIODES, FOCAL PLANES, OUTPUT, RADIATION, SIGNAL PROCESSING, SIGNALS, SUBSTRATES, WAVEGUIDES, CAMERA LENSES, OPTICAL WAVEGUIDES
Subject Categories : Electrical and Electronic Equipment
Distribution Statement : APPROVED FOR PUBLIC RELEASE