Amplifier arrangement

Details Amplifier arrangement Amplifier arrangement

2004-08-11

2008-03-25

Nguyen, Simon (Department: 2618)

Amplifiers

With semiconductor amplifying device

C455S127300, C455S253200, C455S333000, C330S088000, C330S098000, C330S288000

Reexamination Certificate

active

07348846

ABSTRACT:
The present invention relates to an amplifier arrangement having a plurality of amplifier stages that form a series circuit. Each amplifier stage comprises a current mirror, the translation ratio of which defines the gain of the amplifier stage. Moreover, a current coupling-out element is provided in each amplifier stage, a partial current being output at said element, and the partial currents are added together in a summation element. An RSSI signal associated with the summed currents is provided at the output of the summation element. The RSSI amplifier arrangement provides constant and thermostable signal amplification, low sensitivity to overvoltages, and exhibits a low current requirement and good radio frequency properties.

REFERENCES:
patent: 5489868 (1996-02-01), Gilbert
patent: 5506537 (1996-04-01), Kimura
patent: 5677561 (1997-10-01), Jensen
patent: 6252455 (2001-06-01), Kurby et al.
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patent: 7010283 (2006-03-01), Matsumoto et al.
patent: 2003/0052726 (2003-03-01), Shkap
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patent: 2003/0080805 (2003-05-01), Kaminishi
patent: 2004/0038657 (2004-02-01), Bae
patent: 2005/0037716 (2005-02-01), Mitzlaff

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