Amplifier circuit with passive gain step circuit

Details Amplifier circuit with passive gain step circuit Amplifier circuit with passive gain step circuit

2006-05-16

2006-05-16

Le, Don (Department: 2819)

Amplifiers

With dummy tube

C330S296000

Reexamination Certificate

active

07046081

ABSTRACT:
An amplifier circuit includes an amplifier connected between an HF input and HF output and a coupling circuit connected in parallel to the amplifier between the HF input and the HF output. The coupling circuit includes an input bipolar transistor whose collector terminal or emitter terminal is high-frequency coupled to the HF input, and a coupling diode structure which is high-frequency coupled between the base terminal of the input bipolar transistor and the HF output.

REFERENCES:
patent: 5880631 (1999-03-01), Sahota
patent: 6144254 (2000-11-01), Irvine et al.
patent: 6522195 (2003-02-01), Watanabe et al.
patent: 6624702 (2003-09-01), Dening
patent: 6731171 (2004-05-01), Yamashita
patent: 6768377 (2004-07-01), Macedo
patent: 6803822 (2004-10-01), Kim et al.
patent: 1 107 451 (2000-11-01), None

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