Amplifier circuit

Amplifiers – With semiconductor amplifying device – Including plural stages cascaded

Reexamination Certificate

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Details

C330S307000

Reexamination Certificate

active

07466206

ABSTRACT:
Amplifier circuit for amplifying an input signal, having a vertically integrated cascode that has a collector semiconductor region of a collector, adjacent to the collector semiconductor region, a first base semiconductor region of a first base, a second base semiconductor region of a second base, an intermediate base semiconductor region adjoining both the first base semiconductor region and the second base semiconductor region, and an emitter semiconductor region of an emitter adjacent to the second base semiconductor region, wherein a signal input is connected to the second base, and the first base is electrically coupled both to a voltage source that is independent of the input signal and to the collector.

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Melito M et al: “Bipolar-MOS monolithic cascode switch in VIPower technology” Industrial Application Society Annual Meeting, 19943, Conference Record of the 1994 IEEE Denver, CO, USA Oct. 2-6, 1994, New York, NY, USA, IEEE, Oct. 2, 1994, pp. 1322-1325, XP010124240 ISBN: 0-7803-1993-1 the whole document.

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