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LOW NOISE, LINEAR. VARIABLE GAIN. R. F. AMPLIFIER
WESTINGHOUSE ELECTRIC CORP ELMIRA N Y
Pagination or Media Count:
An analysis of amplifier interference phenomena in relation to various tube transfer-characteristics is developed. Two possible approaches to diminish interference effects are proposed a specially designed deflection tube with a linear transfer-characteristic, and a special circuitry which compensates for the curvature of the transfer-characteristic curve of a conventional amplifier tube so as to linearize the transfer-characteristic of the amplifier system. The basic design of a sheet beam deflection tube was completed and calculations were of the deflection sensitivity, beam current density, and transconductance characteristics. Tooling for the construction of the preliminary design sheet beam deflection tube was completed and parts were fabricated. Linearity of a 3 triode circuit was measured by applying a ten volt peakto-peak, 60 cycle signal to the grid of the input tube. The 3 triode circuit was refabricated and tuned circuits were added in order to determine whether the linearity of this circuit would actually reduce cross modulation. Author
APPROVED FOR PUBLIC RELEASE