Amplifiers – With semiconductor amplifying device – Including temperature compensation means
Reexamination Certificate
2008-05-20
2008-05-20
Nguyen, Patricia (Department: 2817)
Amplifiers
With semiconductor amplifying device
Including temperature compensation means
C330S295000, C330S296000, C455S127100
Reexamination Certificate
active
07375588
ABSTRACT:
A transmission amplifier for amplifying a signal to be transmitted includes an amplifying unit that is warmed efficiently when the temperature is low. In a constitution in which an amplifying unit amplifies a signal, a temperature detecting means detects temperature. Amplifying-unit-self-heating-facilitation control means perform control for facilitating self-heating by the amplifying unit when temperature detected by the temperature detecting means is lower than a predetermined threshold value, or equal to or lower than the predetermined threshold value. The amplifying-unit-self-heating-facilitation control means perform, for example, bias control for the amplifying unit as the control for facilitating self-heating by the amplifying unit.
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Dosaka Junya
Yamakawa Junichiro
Hitachi Kokusai Electric Inc.
Nguyen Patricia
Wenderoth , Lind & Ponack, L.L.P.
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