Invention Grant
- Patent Title: Power amplification apparatus and control method
- Patent Title (中): 功率放大装置及控制方法
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Application No.: US14626714Application Date: 2015-02-19
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Publication No.: US09479127B2Publication Date: 2016-10-25
- Inventor: Masahiro Kumagawa , Hisashi Adachi
- Applicant: Panasonic Corporation
- Applicant Address: JP Osaka
- Assignee: PANASONIC CORPORATION
- Current Assignee: PANASONIC CORPORATION
- Current Assignee Address: JP Osaka
- Agency: Greenblum & Bernstein, P.L.C.
- Priority: JP2014-038864 20140228
- Main IPC: H03F3/217
- IPC: H03F3/217 ; H03F3/00 ; H03F1/02 ; H03F1/32 ; H03F3/24
Abstract:
A power amplification apparatus generates a code for controlling the number of class D power amplifiers that are in operation among a plurality of class D power amplifiers, changes the duty ratio of a carrier wave signal in accordance with output voltage, and amplifies a transmission signal. A code for decreasing the number of class D power amplifiers in operation is generated when the duty ratio of the carrier wave signal is increased, while a code for increasing the number of class D power amplifiers in operation is generated when the duty ratio of the carrier wave signal is decreased.
Public/Granted literature
- US20150249431A1 POWER AMPLIFICATION APPARATUS AND CONTROL METHOD Public/Granted day:2015-09-03
Information query
IPC分类:
