Amplifier arrangement and method of signal amplification

Details Amplifier arrangement and method of signal amplification Amplifier arrangement and method of signal amplification

2006-07-07

2008-11-18

Nguyen, Khanh V (Department: 2817)

Amplifiers

With semiconductor amplifying device

Including frequency-responsive means in the signal...

C330S051000

Reexamination Certificate

active

07453321

ABSTRACT:
An amplifier arrangement is proposed which has an amplifier with adjustable amplification having an output. An impedance transformer circuit is connected to the output. Said circuit is designed for transforming a high output impedance of the adjustable amplifier into a low impedance at its output. The amplifier arrangement contains at least two switchable elements having a reactance, which elements are connected in each case by a first terminal to the output of the impedance transformer circuit, and by a second terminal to a reference potential terminal. The switchable elements are designed for changing the impedance at the output of the impedance transformer circuit depending on a switch position of a switching means. A load impedance at the output of the amplifier is consequently varied by simple means when the output level of the amplifier changes.

REFERENCES:
patent: 5060294 (1991-10-01), Schwent et al.
patent: 6281748 (2001-08-01), Klomsdorf et al.
patent: 6794935 (2004-09-01), Klomsdorf et al.
patent: 7202736 (2007-04-01), Dow et al.
patent: 199 30 195 (2001-01-01), None

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