US 12,451,911 B2
Wireless communications system, power supply system, and terminal device
Hsiang Hui Chang, Shenzhen (CN); Daiping Tang, Shanghai (CN); and Feiyang Hu, Shanghai (CN)
Assigned to HUAWEI TECHNOLOGIES CO., LTD., Shenzhen (CN)
Appl. No. 17/789,011
Filed by HUAWEI TECHNOLOGIES CO., LTD., Shenzhen (CN)
PCT Filed Dec. 25, 2020, PCT No. PCT/CN2020/139220
§ 371(c)(1), (2) Date Jun. 24, 2022,
PCT Pub. No. WO2021/129781, PCT Pub. Date Jul. 1, 2021.
Claims priority of application No. 201911367567.1 (CN), filed on Dec. 26, 2019.
Prior Publication US 2023/0027340 A1, Jan. 26, 2023
Int. Cl. H03F 1/06 (2006.01); H03F 3/68 (2006.01); H04B 1/04 (2006.01); H04B 1/40 (2015.01)
CPC H04B 1/0458 (2013.01) [H03F 1/06 (2013.01); H03F 3/68 (2013.01); H04B 1/0475 (2013.01); H04B 1/40 (2013.01); H04B 2001/0408 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A wireless communications system, comprising:
a power supply circuit configured to receive an envelope signal and supply power to a first power amplifier circuit and a second power amplifier circuit, wherein
the power supply circuit comprises an envelope tracking modulator coupled to the first power amplifier circuit and the second power amplifier circuit and is configured to receive the envelope signal and output an envelope voltage, and the power supply circuit further comprises an inductor filter circuit coupled to the first power amplifier circuit and the second power amplifier circuit and configured to receive the envelope voltage, wherein
the first power amplifier circuit is configured to receive a transmit signal; and when a bandwidth of the transmit signal meets a first bandwidth range, amplify the transmit signal to output a first amplified output signal; and
the second power amplifier circuit is configured to receive the transmit signal; and when the bandwidth of the transmit signal meets a second bandwidth range, amplify the transmit signal to output a second amplified output signal.