Accession Number : AD0284905

Title :   STUDY AND INVESTIGATION OF MILLIMETER AND SUBMILLIMETER RECEIVER TECHNIQUES

Corporate Author : ILLINOIS UNIV URBANA ELECTRICAL ENGINEERING RESEARCH LAB

Report Date : 01 JUN 1962

Pagination or Media Count : 1

Abstract : DESCRIPTORS: *Microwaves, *Infrared detectors, *Infrared optical systems, *Radar receivers, *Infrared rlometers, Electromagnetic waves, Infrared radiation, Di electrics, Ferroelectric crystals, Temperature, Polarization, Antiferromagnetism, Crystals, Magnetostriction, Magneto-optic rotation, Hall effect, Semiconductors, Superconductors, Wave transmission, Waveguides, Electron beams, Fo cusing, Electromagnetic lenses, Microwave equipment, Mathematical analysis, Cavity res onators, Transmission lines. Efforts were made to develop video electromagnetic detection schemes which are usable in the millimeter-infrared region. The analysis and evaluation of pyroelectric effect detectors and antiferromagnetic detectors is presented. Antiferromagnetic detectors appear feasible if their low temperature requirement is acceptable. Other detection schemes which are discussed but which have not been fully investigated include Hall effect devices, photodetection schemes, electron heating in intrinsic semiconductors, and superconducting devices. A Goubau beam type waveguide with a design frequency of 75 kmc was constructed for use in evaluating detection schemes. The design data for this transmission line is presented along with loss measurements. To aid in making measurements on the line, a resonator and a Michelson interferometer was constructed. The problems associated with efficient launching of the beam modes and with focusing the beam waveguide distributions for detection purposes were also investigated. (Author)

Descriptors :   *INFRARED DETECTORS, *INFRARED OPTICAL SYSTEMS, *INFRARED RECEIVERS, *MICROWAVES, *RADAR RECEIVERS, ANTIFERROMAGNETISM, BOLOMETERS, CRYSTAL RECTIFIERS, CRYSTAL VIDEO RECEIVERS, CRYSTALS, DETECTORS, DIELECTRICS, RADIOFREQUENCY LENSES, ELECTROMAGNETIC RADIATION, ELECTRON BEAMS, FERROELECTRIC CRYSTALS, FOCUSING, HALL EFFECT, INFRARED RADIATION, MAGNETOOPTICS, MAGNETOSTRICTION, MATHEMATICAL ANALYSIS, MICROWAVE EQUIPMENT, POLARIZATION, SEMICONDUCTORS, SUPERCONDUCTORS, TEMPERATURE, WAVE PROPAGATION, WAVEGUIDES

Distribution Statement : APPROVED FOR PUBLIC RELEASE