High-frequency power amplifier

Details High-frequency power amplifier High-frequency power amplifier

2007-02-27

2008-10-21

Choe, Henry K (Department: 2817)

Amplifiers

With semiconductor amplifying device

Including temperature compensation means

C330S296000

Reexamination Certificate

active

07439808

ABSTRACT:
A high-frequency power amplifier with a temperature compensation function for power amplifying a high-frequency signal, includes: a power amplifying transistor having an emitter grounded; a high power output bias circuit that supplies a high power output current corresponding to a high power output of the high-frequency power amplifier to the power amplifying transistor; and a low power output bias circuit that supplies a low power output current corresponding to a low power output of the high-frequency power amplifier to the power amplifying transistor.

REFERENCES:
patent: 6922107 (2005-07-01), Green
patent: 6992524 (2006-01-01), Yang et al.
patent: 7154336 (2006-12-01), Maeda
patent: 7310015 (2007-12-01), Jeon et al.
patent: 7358817 (2008-04-01), Kao et al.
patent: 2003-347850 (2003-12-01), None
patent: 2004-40500 (2004-02-01), None

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