Title:
WIRELESS COMMUNICATION SYSTEM, POWER SUPPLY SYSTEM, AND TERMINAL DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/129781
Kind Code:
A1
Abstract:
A wireless communication system. A power supply circuit (320) within said wireless communication system comprises an envelope tracking modulator, an envelope tracking modulator being able to couple with a first power amplifier circuit (PA31) and a second power amplifier circuit (PA32), so as to enable the power supply circuit (320) to supply power to the first power amplifier circuit (PA31) and the second power amplifier circuit (PA32). When a send signal output by a processor (310) satisfies 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 the power of the send signal; when the send signal output by the processor (310) satisfies 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 send signal. The first power amplifier circuit (PA31) and the second power amplifier circuit (PA32), which are for different bandwidths, share the power supply circuit (320), beneficial in lowering costs as well as reducing printed circuit board area.
Inventors:
CHANG HSIANG HUI (CN)
TANG DAIPING (CN)
HU FEIYANG (CN)
TANG DAIPING (CN)
HU FEIYANG (CN)
Application Number:
PCT/CN2020/139220
Publication Date:
July 01, 2021
Filing Date:
December 25, 2020
Export Citation:
Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
H03F3/68; H03F1/00; H04B1/40
Foreign References:
| CN105703716A | 2016-06-22 | |||
| CN108011724A | 2018-05-08 | |||
| US20170006543A1 | 2017-01-05 | |||
| US20160164466A1 | 2016-06-09 | |||
| CN103430603A | 2013-12-04 | |||
| CN105811893A | 2016-07-27 | |||
| CN201911367567A | 2019-12-26 |
Other References:
See also references of EP 4064560A4
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