Accession Number : AD0438401


Title :   DESIGN AND DEVELOPMENT INVESTIGATIONS OF A LOW NOISE, LINEAR, VARIABLE GAIN, R.F. AMPLIFIER TUBE.


Descriptive Note : Quarterly progress rept. no. 3, 1 Jan-31 Mar 64,


Corporate Author : WESTINGHOUSE ELECTRIC CORP ELMIRA N Y


Personal Author(s) : Pietrzyk,J P ; van der Jagt,A ; Pear,R L


Report Date : 15 Apr 1964


Pagination or Media Count : 41


Abstract : The main purpose of a new design, construction D, was to reduce the noise level and to make the tube better suited for the high frequency range. For that reason we raised the transconductance to approximately 2500 umhos. At the same time we managed to achieve a very good Ib/Ic2 ratio which also will be beneficial to the noise. During the period work was also done on automatic gain control. Experiments with deflection electrodes or suppressor grids did not give the required result. Construction D of the afore mentioned designs seems to be most suited for the 200 - 400 Mc/s range. Some induction and capacitance measurements were done in order to determine the best possible stem arrangement. An approach and test outline to evaluate the tubes has been established. In the approach, the selected tubes will be substituted for the existing RF amplifier using an adaptor. Mounted in the adaptor will be those components required for the modified amplifier circuit. (Author)


Descriptors :   RADIOFREQUENCY AMPLIFIERS , ELECTRON TUBES , RADIO RECEIVERS , GAIN , CATHODES(ELECTRON TUBES) , MEASUREMENT , TRIODES , TETRODES , ELECTRON TUBE COMPONENTS , NOISE(RADIO) , DISTORTION , VERY HIGH FREQUENCY , SENSITIVITY , AUTOMATIC GAIN CONTROL


Distribution Statement : APPROVED FOR PUBLIC RELEASE