Invention Grant
- Patent Title: Power supply circuit, power supply system, and radio communication apparatus
- Patent Title (中): 电源电路，电源系统和无线通信装置
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Application No.: US14192675Application Date: 2014-02-27
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Publication No.: US09203345B2Publication Date: 2015-12-01
- Inventor: Yasufumi Sakai , Eiji Yoshida
- Applicant: FUJITSU LIMITED
- Applicant Address: JP Kawasaki
- Assignee: FUJITSU LIMITED
- Current Assignee: FUJITSU LIMITED
- Current Assignee Address: JP Kawasaki
- Agency: Arent Fox LLP
- Priority: JP2013-086431 20130417
- Main IPC: H01Q11/12
- IPC: H01Q11/12 ; H04B1/04 ; H03F1/02 ; H03F3/189 ; H02M3/156 ; H02M1/00 ; H04B1/16
Abstract:
A power supply circuit includes: a direct current to direct current converter; a linear amplifier; and a first capacitance, one terminal of the first capacitance being coupled an output of the linear amplifier, another terminal of the first capacitance being coupled to an output terminal, wherein the linear amplifier configured to operate in a variable voltage mode and the linear amplifier configured to stop operating and couples an output of the linear amplifier to a ground in a fixed voltage mode.
Public/Granted literature
- US20140315504A1 POWER SUPPLY CIRCUIT, POWER SUPPLY SYSTEM, AND RADIO COMMUNICATION APPARATUS Public/Granted day:2014-10-23
Information query
