RF power amplifier circuit
A RF power amplifier circuit has at least one power transistor and a protection circuit protecting the power transistor against high voltages that lead to a destructive breakdown of the transistor. The circuit comprises a power transistor, a biasing circuit biasing the power transistor; a peak detec...
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| Format: | Patent |
| Sprache: | eng |
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| Zusammenfassung: | A RF power amplifier circuit has at least one power transistor and a protection circuit protecting the power transistor against high voltages that lead to a destructive breakdown of the transistor. The circuit comprises a power transistor, a biasing circuit biasing the power transistor; a peak detector measuring the output voltage of the power transistor; and a comparator circuit connected to the peak detector and designed to reduce the base current of the power transistor when controlled by the peak detector. |
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