Design and performance of a new low-noise triode for use up to 1000 Mc/s

The paper outlines the factors governing the design of a simple glass-base u.h.f. amplifier valve and considers the circuits in which it can be used. The design of such a valve is described, together with the special techniques which are necessary to obtain reproducibility with inter-electrode clearances of only 40 microns. Detailed information is given on the stability, noise performance and gain-bandwidth product of the valve over the u.h.f. band.