Diffused-Base R. F. Power Oscillator Junction Transistors

摘要

This final report details the successful development of a 70 megacycle, one watt amplifier transistor. This device (the L-5437) has a minimum power gain of 5 db (grounded emitter) with an efficiency > 65% at 70 megacycles, using 1 watt RF output. Under these conditions, it is capable of continuously dissipating over 500 mw of power. Under overload conditions, continuous operation at 2.5 watts dissipation for over 50 hours has been achieved.