Power amplifier module

Details Power amplifier module Power amplifier module

2006-09-05

2006-09-05

Pascal, Robert (Department: 2817)

Amplifiers

With semiconductor amplifying device

Including protection means

C330S20700P

Reexamination Certificate

active

07102445

ABSTRACT:
An amplifier2camplifies a transmit signal and outputs the amplified transmit signal to an antenna10. A drive current for driving the amplifier2cis inputted to a drive current input terminal7. A current divider circuit41is provided between the drive current input terminal7and the amplifier2c, and divides the drive current among a plurality of paths. The current divider circuit41includes a plurality of switching elements provided in the paths, respectively, and switched between a conduction state and a blocking state; and a resistance element13provided in at least one of the plurality of paths. A detection section5detects an electrical parameter in the resistance element. A control section6switches the plurality of switching elements between a conduction state and a blocking state, based on the electrical parameter detected by the detection section5.

REFERENCES:
patent: 5826177 (1998-10-01), Uno
patent: 6785521 (2004-08-01), Hadjichristos et al.
patent: 9-199950 (1997-07-01), None
patent: 9-284062 (1997-10-01), None
patent: 11-355054 (1999-12-01), None

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