Amplifiers – With semiconductor amplifying device – Including temperature compensation means
Patent
1998-04-21
2000-01-11
Pascal, Robert
Amplifiers
With semiconductor amplifying device
Including temperature compensation means
330298, H03F 304
Patent
active
060140593
ABSTRACT:
A power amplifier circuit is provided which comprises an input terminal for receiving an input signal and an output terminal for providing an output signal, and at least one transistor for amplifying the input signal to provide the output signal, and a module for controlling the input signal received at the input terminal, and a module for generating a control signal which substantially follows the temperature of the at least one transistor at least in a selected temperature range. The module for controlling the input signal controls the input signal such that the control signal is prevented from exceeding a pre-determined level. The level corresponds to a pre-determined temperature of the at least one transistor which is equal to or below a specified maximum temperature for the at least one transistor.
REFERENCES:
patent: 3480835 (1969-11-01), Richman
patent: 3864642 (1975-02-01), Long et al.
patent: 4042889 (1977-08-01), Baker
patent: 4321554 (1982-03-01), Quilter
patent: 4355287 (1982-10-01), Hoover
Choe Henry
Pascal Robert
Telefonaktiebolaget LM Ericsson
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