High-frequency power amplifier and communication apparatus

Details High-frequency power amplifier and communication apparatus High-frequency power amplifier and communication apparatus

2007-08-14

2007-08-14

Pascal, Robert (Department: 2817)

Amplifiers

With semiconductor amplifying device

Including temperature compensation means

Reexamination Certificate

active

11076525

ABSTRACT:
A temperature compensation circuit145included in a collector voltage generation section130aapplies an offset voltage Vofs(T) to a power control signal Vctrl according to a device temperature. The resulting temperature compensation circuit output voltage Vctrl′ (T) is applied to a collector terminal of a bipolar transistor110through a voltage regulator140and a choke inductor170.

REFERENCES:
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patent: 6665525 (2003-12-01), Dent et al.
patent: 6701138 (2004-03-01), Epperson et al.
patent: 6753735 (2004-06-01), Arai et al.
patent: 6897730 (2005-05-01), Dupuis et al.
patent: 6917243 (2005-07-01), Doherty et al.
patent: 08-028617 (1991-01-01), None
patent: 2001-176982 (2001-06-01), None
patent: 2002-009558 (2002-01-01), None
patent: WO 02/101944 (2002-12-01), None

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