WIRELESS COMMUNICATION SYSTEM, POWER SUPPLY SYSTEM, AND TERMINAL DEVICE

A wireless communications system is provided. A power supply circuit (320) in the wireless communications system includes an envelope tracking modulator, and the envelope tracking modulator may be coupled to a first power amplifier circuit (PA31) and a second power amplifier circuit (PA32), so that...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	CHANG, Hsiang Hui, HU, Feiyang, TANG, Daiping
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	AMPLIFIERS BASIC ELECTRONIC CIRCUITRY ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY TRANSMISSION
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	A wireless communications system is provided. A power supply circuit (320) in the wireless communications system includes an envelope tracking modulator, and the envelope tracking modulator may be coupled to a first power amplifier circuit (PA31) and a second power amplifier circuit (PA32), so that the power supply circuit (320) supplies power to the first power amplifier circuit (PA31) and the second power amplifier circuit (PA32). When a transmit signal that is output by a processor (310) meets a first bandwidth range, the power supply circuit (320) supplies power to the first power amplifier circuit (PA31), and the first power amplifier circuit (PA31) amplifies power of the transmit signal. When the transmit signal that is output by the processor (310) meets a second bandwidth range, the power supply circuit (320) supplies power to the second power amplifier circuit (PA32), and the second power amplifier circuit (PA32) amplifies the transmit signal. The first power amplifier circuit (PA31) and the second power amplifier circuit (PA32) that have different bandwidths share one power supply circuit (320). This helps reduce costs and reduce an area of a printed circuit board.