Wireless transmission device in which transmission output is...

Details Wireless transmission device in which transmission output is... Wireless transmission device in which transmission output is...

2011-03-01

2011-03-01

Jackson, Blane J (Department: 2618)

Telecommunications

Transmitter

Power control, power supply, or bias voltage supply

C455S126000, C330S254000, C330S291000

Reexamination Certificate

active

07899420

ABSTRACT:
A wireless transmission device includes a RF power amplification section for amplifying a transmit RF signal and outputting the amplified signal to a transmission antenna, a detector section, and a control section. The RF power amplification section includes a plurality of stages of amplification, the transmit RF signal is input to an input of a first one of the plurality of stages of amplification, and an output of a last one of the plurality of stages of amplification is output to the transmission antenna. The detector section includes a plurality of detectors provided so as to correspond to the plurality of stages of amplification, each for detecting an input level of a corresponding one of the stages of amplification, and a synthesizer for synthesizing together detection outputs from the plurality of detectors. The control section controls, in a feedback control, an output level of the RF power amplification section based on an output level of the synthesizer.

REFERENCES:
patent: 6980780 (2005-12-01), Chen et al.
patent: 7783272 (2010-08-01), Magnusen
patent: 2005/0227646 (2005-10-01), Yamazaki et al.
patent: 62-100010 (1987-05-01), None
patent: 01-137716 (1989-05-01), None
patent: 2004-153378 (2004-05-01), None
patent: 2005-191791 (2005-07-01), None
Japanese Notice of Reasons for Rejection, w/ English translation thereof, issued in Japanese Patent Application No. JP 2007-005631 dated Sep. 14, 2010.

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