Transmission circuit capable of efficiently operating a...

Details Transmission circuit capable of efficiently operating a... Transmission circuit capable of efficiently operating a...

2006-06-13

2006-06-13

Mottola, Steven J. (Department: 2817)

Amplifiers

With semiconductor amplifying device

Including gain control means

C330S133000

Reexamination Certificate

active

07061326

ABSTRACT:
A power supply voltage required on the basis of information of setting transmission power to be output is supplied, thereby minimizing power consumption. A transmission circuit comprises a driver amplifier3whose gain is controlled by a first control voltage Vc1for setting transmission power and a power amplifier4connected to the post-stage of the power amplifier3. A power supply circuit5to which the first control voltage Vc1is input and whose output voltage is controlled by the first control voltage Vc1is provided. A voltage required for the power amplifier4when outputting the transmission power set by the first control voltage Vc1is supplied from the power supply circuit5.

REFERENCES:
patent: 6577190 (2003-06-01), Kim
patent: 2002-290247 (2002-10-01), None
patent: 2003-008365 (2003-01-01), None

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