DEVELOPMENT OF A HIGH FREQUENCY ELECTRON-BEAM PARAMETRIC AMPLIFIER.
Abstract
In an attempt to reduce the noise recently meas ured in the two Kompfner-dip coupler tube, the original gun, which contained a large cathode and two current-intercepting anodes was replaced by a non-intercepting Pierce gun. Measurements made on this tube with the recently obtained lower noise figure receiver have shown improved but still unacceptable noise levels at the output coupler after noise cancellation. Further theo retical considerations on this noise are pre sented in an appendix. A 400 mc non-degenerate amplifier tube designed to investigate, and hence minimize, excess noise from longitudinal velocity spread has been constructed and has an unexpect edly high noise figure of 6.5 db. Reasons for the discrepancy are being investigated. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 31, 1963
- Accession Number
- AD0418365
Entities
People
- Charles G. Nelson
- Peter G. Everett