Abstract
We demonstrate a tunneling hot-electron transfer amplifier that exhibits both dc and rf current gain at room temperature. The measured peak common-emitter current gain of the transistor approaches 7 while the dc differential gain is close to 10. S-parameter measurements, performed at a current density of 1.8×104 A cm−2, yield a current gain cutoff frequency of 6 GHz and a maximum frequency of oscillation of 12.5 GHz.
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