Title:
5G RADIO FREQUENCY FRONT END POWER SUPPLY SWITCHING CHIP COMPATIBLE WITH APT AND ET MODES
Document Type and Number:
WIPO Patent Application WO/2021/120242
Kind Code:
A1
Abstract:
Disclosed is a 5G radio frequency front end power supply switching chip compatible with APT and ET modes. The chip comprises a first switch M1, a second switch M2, and a third switch M3. The first switch M1, the second switch M2, and the third switch M3 respectively comprise a high power supply terminal, a low power supply terminal, a control terminal. A control terminal of the third switch M3 and a control terminal of the first switch M1 are respectively used for loading control voltages. A high power supply terminal of the third switch M3 is connected to a control terminal of the second switch M2. A low power supply terminal of the third switch M3 is grounded. A high power supply terminal of the second switch M2 is used for loading a power supply. A low power supply terminal of the second switch M2 is connected to a high power supply terminal of the first switch M1, and serves as an output terminal. A low power supply terminal of the first switch M1 is grounded. The power supply switching chip provided by the present invention achieves the compatibility of the most commonly used APT power supply mode and ET power supply mode in a 5G radio frequency power amplifier.
Inventors:
HU ZIJIE (CN)
CAO YUAN (CN)
NI NAN (CN)
NI JIANXING (CN)
CAO YUAN (CN)
NI NAN (CN)
NI JIANXING (CN)
Application Number:
PCT/CN2019/127951
Publication Date:
June 24, 2021
Filing Date:
December 24, 2019
Export Citation:
Assignee:
RADROCK CHONGQING TECH CO LTD (CN)
International Classes:
H03F1/30; H03F1/02; H03F1/32
Domestic Patent References:
| WO2015148326A1 | 2015-10-01 |
Foreign References:
| CN110061709A | 2019-07-26 | |||
| CN104486845A | 2015-04-01 | |||
| US20180367101A1 | 2018-12-20 |
Other References:
QIN, XIAOHU: "Powering for RF Power Amplifier of the Handheld Device by SuPA", THE WORLD OF POWER SUPPLY, 31 July 2017 (2017-07-31), pages 1 - 13, XP009528550, ISSN: 1561-0349
Attorney, Agent or Firm:
CHENGDU ZHIJISHI PATENT AGENCY (CN)
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