Monolithically fabricated HBT amplification stage with...

Amplifiers – With semiconductor amplifying device – Including protection means

Reexamination Certificate

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C330S296000

Reexamination Certificate

active

06998920

ABSTRACT:
A monolithically integrated amplifier comprising at least one heterojunction bipolar transistor and at least one field effect transistor is disclosed wherein the field effect transistor provides improved ruggedness by limiting the base and/or collector current to the HBT during severe load mismatch and/or high overdrive.

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