We show that by using InP for the emitter and collector layers, and a thin high-doped base layer, it is possible to achieve bath a high de current gain and a high maximum frequency of oscillation, We have fabricated InP/InGaAs double heterojunction bipolar transistors (DHBT's) with cutoff frequencies f(T) and f(max) Of 92 and 95 GHz, respectively, with a de current gain of over 100. The maximum cutoff frequencies were 107 and 104 GHz.
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Univ Calif Santa Barbara, Dept Elect & Comp Engn, Santa Barbara, CA 93106 USAUniv Calif Santa Barbara, Dept Elect & Comp Engn, Santa Barbara, CA 93106 USA
Chiang, Han-Wei
Rode, Johann C.
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Univ Calif Santa Barbara, Dept Elect & Comp Engn, Santa Barbara, CA 93106 USAUniv Calif Santa Barbara, Dept Elect & Comp Engn, Santa Barbara, CA 93106 USA
Rode, Johann C.
Choudhary, Prateek
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Univ Calif Santa Barbara, Dept Elect & Comp Engn, Santa Barbara, CA 93106 USAUniv Calif Santa Barbara, Dept Elect & Comp Engn, Santa Barbara, CA 93106 USA
Choudhary, Prateek
Rodwell, Mark J. W.
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Univ Calif Santa Barbara, Dept Elect & Comp Engn, Santa Barbara, CA 93106 USAUniv Calif Santa Barbara, Dept Elect & Comp Engn, Santa Barbara, CA 93106 USA