Accession Number : AD0289809

Title :   STUDY AND INVESTIGATION OF MILLIMETER AND SUB-MILLIMETER WAVE RECEIVER TECHNIQUES

Corporate Author : ILLINOIS UNIV URBANA ELECTRICAL ENGINEERING RESEARCH LAB

Report Date : 15 OCT 1962

Pagination or Media Count : 1

Abstract : The pyroelectric effect detector was tested experimentally. The sensitivity of the experimental model varies between 2 x 10 to the -11th power amperes/milliwatt and 4 x 10 to the -11th power amperes/milliwatt depending on the temperature of the sample. The use of a shunt inductor to increase the output of the detector was investigated. By choosing the inductor so that the crystal capacitance and the inductor form a resonant circuit at the modulation frequency, the output was increased. The possibility of using metal reflectors rather than dielectric lenses for the phase correctors was investigated. Also being studied is the problem of energy focusing on a beam waveguide for efficient detection. One proposed scheme of doing this consists of using a series of lenses of decreasing focal length to decrease the energy spot size. A tapered dielectric rod was used to focus the energy onto the detector. (Author)

Descriptors :   *INFLUENZA VIRUS, *INFRARED OPTICAL SYSTEMS, *INFRARED RECEIVERS, *MICROWAVES, *RADAR RECEIVERS, *TRANSMISSION LINES, CAVITY RESONATORS, COLD WAR, DETECTORS, ELECTRIC POTENTIAL, ELECTRIC SHUNTS, RADIOFREQUENCY LENSES, FERROELECTRIC CRYSTALS, FERROELECTRIC MATERIALS, FOCUSING, FREQUENCY MODULATION, MODEL TESTS, RADIOFREQUENCY, REFLECTORS, RESISTANCE (ELECTRICAL), SENSITIVITY, SINGLE CRYSTALS, THEORY, WAVEGUIDES

Distribution Statement : APPROVED FOR PUBLIC RELEASE