Telecommunications – Transmitter – Power control – power supply – or bias voltage supply
Reexamination Certificate
2005-08-29
2008-12-02
Phu, Sanh D (Department: 2618)
Telecommunications
Transmitter
Power control, power supply, or bias voltage supply
C455S127200, C455S127300, C455S250100, C455S253200, C455S246100, C370S313000, C370S252000, C375S146000, C375S147000
Reexamination Certificate
active
07460841
ABSTRACT:
A circuit arrangement includes two adjustable amplification devices where the signal output of the first amplification device is connected to the signal input of the second amplification device. The first amplification device has a digital input for controlling its gain and the second amplification device has an input for controlling its gain. The input for gain control in the second amplification device is connected to the input for controlling the gain of the first amplification device via a means such that a change in the gain of the second amplification device in one direction is effected by a change in gain, brought about by means of the control, in the first amplification device in the opposite direction such that the total gain remains essentially the same.
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International Search Report, Int'l Application No. PCT/DE2004/000370, Int'l Filing Date Feb. 27, 2004, 3 pgs.
Fischer Frank
Klein Horst
Krug Erwin
Pflaum Bernd
Eschweiler & Associates LLC
Infineon - Technologies AG
Phu Sanh D
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