Accession Number:

AD0256421

Title:

MULTIWAVE TRANSMISSION LINE AND SEMICONDUCTOR SWITCHING ELEMENTS STUDIES

Descriptive Note:

Corporate Author:

SYLVANIA ELECTRIC PRODUCTS INC WALTHAM MASS

Personal Author(s):

Report Date:

1961-02-28

Pagination or Media Count:

1.0

Abstract:

Results are presented of a program to investigate 1 the application of crystal switches to the scanning of receiving antennas and 2 the properties of a multiwave transmission line. The crystal switch study was concerned with the characteristics of single and multithrow switches which would determine their effectiveness as an antenna scanning device. Measurements on insertion loss, switching ratio, switching speed and noise figure were made. The results proved the feasibility of using these devices for high speed scanning and indicated some improvements to increase their bandwidth properties. The multiwave transmission line study was concerned with a transmission line consisting of two unbalanced TEM lines whose outer form was a rectangular or ridged waveguide. Major points of investigation were the attenuation of TEM modes, the cross coupling of the TEM modes, the effect of center conductors on the cut-off frequency of the dominant waveguide mode, and the construction of an experimental mode launcher. The results of the study indicated that this system can simultaneously transmit two TEM modes and the dominant waveguide mode with negligible cross coupling. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE