Output power control device
First Claim
1. An output power control device that switches transmission output power gradually or continuously, comprising:
- a feedback control system for feedback controlling the output power;
an open control system for open controlling the output power;
control system switching means for causing the feedback control system to function when a target output power level is larger than a previously set fixed value, and for causing the open control system to function when a target output power level is smaller than a previously set fixed value; and
temperature compensation means for compensating for temperature variation at least when the open control system is functioning.
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Accused Products
Abstract
An output power control device is provided with an isolator, to which a transmission signal, that has been power amplified by a power amplifier, is input. The transmission signal is input via a transmission line connected to an output side of the power amplifier. The isolator only passes a progressive wave component of the transmission signal. The output power control device also includes a detection circuit for forming an actual output power detection signal by extracting part of an output power from a point of input of the isolator. Further, a reactance adjusting element connected to the point of input of the isolator cancels a parasitic reactance associated with the extracting section of the detection circuit.
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Citations
4 Claims
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1. An output power control device that switches transmission output power gradually or continuously, comprising:
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a feedback control system for feedback controlling the output power; an open control system for open controlling the output power; control system switching means for causing the feedback control system to function when a target output power level is larger than a previously set fixed value, and for causing the open control system to function when a target output power level is smaller than a previously set fixed value; and temperature compensation means for compensating for temperature variation at least when the open control system is functioning. - View Dependent Claims (2, 3, 4)
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Specification