TRACKER CIRCUIT, COMMUNICATION DEVICE, AND VOLTAGE SUPPLY METHOD
A tracker circuit includes an A-ET circuit, a voltage generating circuit and an output switching circuit. The A-ET circuit generates a continuously varying voltage that is associated with an envelope of a signal to be amplified by a power amplifier. The voltage generating circuit generates a peak vo...
Gespeichert in:
| Hauptverfasser: | , , |
|---|---|
| Format: | Patent |
| Sprache: | eng |
| Schlagworte: | |
| Online-Zugang: | Volltext bestellen |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| Zusammenfassung: | A tracker circuit includes an A-ET circuit, a voltage generating circuit and an output switching circuit. The A-ET circuit generates a continuously varying voltage that is associated with an envelope of a signal to be amplified by a power amplifier. The voltage generating circuit generates a peak voltage that is higher than a maximum voltage value of the continuously varying voltage. The output switching circuit outputs the continuously varying voltage to the power amplifier as a first supply voltage of the power amplifier when an envelope value of the signal to be amplified by the power amplifier is smaller than a threshold; and outputs the peak voltage to the power amplifier as the first supply voltage of the power amplifier when the envelope value is greater than the threshold. |
|---|