Accession Number:

AD0272141

Title:

BIPERIODIC MAGNETRON DEVELOPMENT

Descriptive Note:

Corporate Author:

RADIO CORP OF AMERICA HARRISON N J

Personal Author(s):

Report Date:

1961-12-31

Pagination or Media Count:

1.0

Abstract:

The design of a biperiodic magnetron is detailed and measurements on sealed-off and demountable versions of the tube are reported. Experimental results point up a serious gap in the microwavefield, insofar as biperiodic, or more generally, multi-periodic-circuit tubes are concerned. A knowledge of the multi-mode problems existing with multi-periodic structures is not sufficient to deal with an active tube. To fully exploit both O-type and M-type interactions, as well as hybrid varieties, a fundamental understanding of the behavior of an electron beam in the presence of such a circuit is necessary. In the biperiodic magnetron the spiral lens performed satisfactorily, insofar as beam transmission is concerned. However, the limitations imposed on the radial velocity distribution with respect to traveling-wave interaction are not known. The electron beams initial conditions at the entrance plane to the biperiodic structure varies across the beam diameter. These variations, and their deviations from the theoretically designed entrance conditions, affect the gain and efficiency of the device, as well as the degree of excitation of undesired modes. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE