Amplifiers – With semiconductor amplifying device – Including protection means
Patent
1980-08-11
1982-10-05
Mullins, James B.
Amplifiers
With semiconductor amplifying device
Including protection means
330207P, 455117, H02H 720
Patent
active
043530370
ABSTRACT:
A protection circuit for a transmitter amplifier which provides power leveling and controls transmitter output power as a function of the ratio of reflected power to forward power. The circuit senses forward power level and develops a first voltage which is compared with the reference voltage to provide a control voltage which controls the power developed by the transmitter amplifier. Reflected power is sensed and a second voltage is developed which is compared to a portion of the first voltage and causes a reduction in the reference voltage when the reflected power to forward power ratio exceeds a predetermined level.
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Gillman James W.
Motorola Inc.
Mullins James B.
Scheer James A.
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