Accession Number : AD0712378

Title :   CHARACTERISTICS OF OVERSIZE CIRCULAR WAVEGUIDES AND TRANSITIONS AT 3-MILLIMETER WAVELENGTHS.

Descriptive Note : Report for Jan 69-Mar 70,

Corporate Author : AEROSPACE CORP EL SEGUNDO CALIF LAB OPERATIONS

Personal Author(s) : King,Howard E. ; Wong,Jimmy L.

Report Date : 01 AUG 1970

Pagination or Media Count : 23

Abstract : The physical and electrical characteristics of a 0.995 in. diameter oversize circular waveguide and its associated transitions operating in the 92- to 96-GHz band are described. Both linear and nonlinear taper transitions were employed in converting from the WR-10 dominant mode rectangular waveguide (0.100 X 0.050 in. ID) to a 0.995 in. diameter circular waveguide. The results of the present investigations indicate that the nonlinear taper transitions yield considerably less multimoding effects. In the 92- to 96-GHz band, the measured attenuation for a 0.995 in. diameter oversize copper circular waveguide is 0.028 dB/ft as compared to a theoretical value of 0.02 dB/ft. (Author)

Descriptors :   (*WAVEGUIDES, MILLIMETER WAVES), CYLINDRICAL BODIES, ATTENUATION, CONFIGURATION

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE