Detector circuit and system for a wireless communication

Details Detector circuit and system for a wireless communication Detector circuit and system for a wireless communication

2011-08-02

2011-08-02

Choe, Henry K (Department: 2817)

Amplifiers

With semiconductor amplifying device

Including gain control means

C330S296000

Reexamination Certificate

active

07990221

ABSTRACT:
Provided are a detector circuit which has a simple circuit configuration, is capable of indicating an accurate power according to a load fluctuation of a radio frequency power amplifier or a difference in a modulation mode, and can be easily incorporated in the radio frequency power amplifier, and a wireless communication system using the detector circuit. The detector circuit10includes a detecting resistor11for detecting a part of a current flowing from a bias circuit6, and a current-voltage conversion circuit12for converting a current obtained through the detecting resistor11into a voltage. A current supplied from the bias circuit6to the amplifying transistor1is detected, so that an output current from the amplifying transistor1fluctuates when a load on the radio frequency power amplifier fluctuates, and an input current and a current from the bias circuit fluctuate in proportion to the output current from the amplifying transistor1, whereby an outputted detection voltage can follow a load fluctuation on the radio frequency power amplifier.

REFERENCES:
patent: 6275687 (2001-08-01), Lloyd
patent: 6448855 (2002-09-01), Sowlati et al.
patent: 6531925 (2003-03-01), Scott et al.
patent: 6625429 (2003-09-01), Yamashita
patent: 7126412 (2006-10-01), Amamiya
patent: 7245182 (2007-07-01), Koizumi
patent: 7274206 (2007-09-01), Prikhodko et al.
patent: 2001-016116 (2001-01-01), None
patent: 2003-531547 (2003-10-01), None
patent: 3847756 (2006-11-01), None

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