Title:
ENVELOPE TRACKING MODULATOR AND TRANSMITTING DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/062685
Kind Code:
A1
Abstract:
An envelope tracking modulator (ETM) and a transmitting device, for use in solving the problem of mutual influence between different types of power amplifiers (PA) in an existing ET/APT dual-mode power supply. The ETM comprises: a single-input dual-output DC/DC converter (201), having a first output end used for outputting a first power supply voltage and a second output end used for outputting a first direct current (DC) voltage, the first power supply voltage being used for driving at least one first power amplifier (APT PA) using an APT mode; a single-input single-output DC/DC converter (202), having an output end used for outputting a second DC voltage; and a linear amplifier (203) used for amplifying an envelope signal under power provision of the first DC voltage and outputting a first alternating current voltage, the second DC voltage and the first alternating current voltage constituting a second power supply voltage, and the second power supply voltage being used for driving at least one second power amplifier (ET PA) using an ET mode.
Inventors:
LI WEINAN (CN)
QIAN YAO (CN)
QIAN YAO (CN)
Application Number:
PCT/CN2019/109570
Publication Date:
April 08, 2021
Filing Date:
September 30, 2019
Export Citation:
Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
H04B1/00; G05F1/56; H04B1/40
Foreign References:
| CN108107959A | 2018-06-01 | |||
| CN108107959A | 2018-06-01 | |||
| CN107404226A | 2017-11-28 | |||
| CN107733461A | 2018-02-23 | |||
| CN104780132A | 2015-07-15 | |||
| CN104779922A | 2015-07-15 | |||
| US20160065139A1 | 2016-03-03 |
Attorney, Agent or Firm:
TDIP & PARTNERS (CN)
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