STUDY OF HIGH-POWER ELECTROSTATICALLY FOCUSED KYLSTRONS.
Abstract
This report covers a two-year program of experimental study to establish the feasibility of increasing the power level of electrostatically focused klystrons (ESFK's) to the 1 megawatt peak power range at S-band, and to increase their bandwidth capability with an ultimate objective of 10% of center frequency. Since this new type of tube does not require external magnetic focusing structures and all the focusing fields are entirely self-contained within the metal envelope of the tube, it is feasible to operate these tubes in close proximity to each other with center-to-center spacings commensurate with that required for phased array radar systems. The achievement of the 1 MW peak power leval at S-band was very successfully demonstrated in a tube which had efficiencies in the 42 - 45% range without a depressed collector, a gain of over 30 dB, and a bandwidth of about 3%. The feasibility of achieving much broader bandwidths than this was demonstrated on a lower power tube with a broadband output circuit whose hot bandwidth was shown to be 4.55% at the 50 kW power level. Other broadband work under this program has pointed the way toward the next steps to be taken which should result in the successful development of a high power 10% bandwidth tube, which would be a valuable device not only for the phased array radar applications, but for other systems requiring lightweight, high power amplifier tubes. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 1966
- Accession Number
- AD0803999
Entities
People
- A. J. Prommer
- G. E. Pokorny
- J. F. Hull