Accession Number : AD0275576

Title :   MILLIMETER WAVE COMPONENT RESEARCH.

Descriptive Note : Final rept.,

Corporate Author : AIR FORCE CAMBRIDGE RESEARCH LABS L G HANSCOM FIELD MASS

Personal Author(s) : Sobel ,F. ; Cohn,M.

Report Date : MAR 1962

Pagination or Media Count : 67

Abstract : Components and techniques for the generation, transmission, and detection of energy in the 100 to 300 gc frequency region were investigated. An analysis of phase-correcting Fresnel zone plates was carried out and a number of zone plates were designed, constructed and successfully tested at frequencies near 140, 210 and 280 gc. The zone plates were used at 140 and 210 gc to make relatively long path transmission measurements and were compared experimentally with dielectric lenses of conventional design. Quarter-period zone plates were used in a Michelson interferometer for the measurement of the dielectric properties of a number of materials and for tests of the frequency stability of a klystron. A detailed theoretical analysis was performed for the propagation characteristics of single-conductor transmission lines, and attenuation calculations were made for several dielectric image lines. Experimental measurements were made at 105 and 140 gc on these two types of surface waveguides. Excitation analyses were carried out for circular cross-section dielectric rod and uncoated metal wire surface waveguides to determine possible launching efficiencies. (Author)

Descriptors :   *MICROWAVES, *RADIO TRANSMISSION, *SEMICONDUCTORS, *TRANSMISSION LINES, *WAVEGUIDES, ATTENUATION, CRYSTAL MIXERS, DIELECTRICS, DIODES, EXTREMELY HIGH FREQUENCY, FERRITES, FREQUENCY MULTIPLIERS, KLYSTRONS, MATHEMATICAL ANALYSIS, MEASUREMENT, PHASE SHIFT CIRCUITS, PROPAGATION, WAVE PROPAGATION

Distribution Statement : APPROVED FOR PUBLIC RELEASE