Accession Number:

AD0263839

Title:

INVESTIGATION OF MICROWAVE DUPLEXER SWITCHING MECHANISMS

Descriptive Note:

Corporate Author:

ILLINOIS UNIV URBANA ELECTRICAL ENGINEERING RESEARCH LAB

Personal Author(s):

Report Date:

1961-04-15

Pagination or Media Count:

1.0

Abstract:

The study of perturbations, produced in noble gases, following a high power RF breakdown 1 microsecond long of the gas at the end of a glass tube inserted in the waveguiding system, has been pursued under different conditions of pressure, type of gas, RF power and tube geometry. The propagation velocity of these perturbations is observed to be nearly independent on the gas pressure, the RF power level and the geometry of the tube subjected to the RF pulse, but to greatly vary with the type of gas. This velocity is found to be close to the velocity of the sound in the particular gas under consideration at room temperature. Therefore these perturbations are identified with sound waves, the velocity of which being modified by the enhanced gas temperature. Other perturbations, detected at identical times over long distances along the tube, are believed to belong to cylindrical sound waves oscillating between the axis and the walls of the tube. Preliminary calculations have been made which demonstrate the possibility of microwave transmission through thin sheets of indium antimonide using quarterwavelength dielectric sheets to match the sample to the waveguide. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE