Invention Grant
- Patent Title: Power amplification module
- Patent Title (中): 功率放大模块
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Application No.: US14520467Application Date: 2014-10-22
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Publication No.: US09559654B2Publication Date: 2017-01-31
- Inventor: Hayato Nakamura , Mitsuo Ariie , Tadashi Matsuoka , Tsutomu Onaro
- Applicant: Murata Manufacturing Co., Ltd.
- Applicant Address: JP Kyoto
- Assignee: MURATA MANUFACTURING CO., LTD.
- Current Assignee: MURATA MANUFACTURING CO., LTD.
- Current Assignee Address: JP Kyoto
- Agency: Pearne & Gordon LLP
- Priority: JP2013-233027 20131111
- Main IPC: H03G3/30
- IPC: H03G3/30 ; H03F3/21 ; H03F3/193 ; H03F1/02 ; H03F1/22 ; H03F3/195 ; H03G1/00

Abstract:
Disclosed is a power amplification module which has a comparatively small size and is capable of adjusting the rising characteristic of a gain. The power amplification module includes a first gain control current generation circuit which generates a first gain control current changing with a control voltage, a first bias current generation circuit which generates a first bias current according to the first gain control current, a gain control voltage generation circuit which generates a gain control voltage changing with the control voltage, a first transistor which is emitter-grounded and in which an input signal and the first bias current are supplied to a base thereof, and a second transistor which is cascode-connected to the first transistor and in which the gain control voltage is supplied to a base thereof and a first output signal obtained by amplifying the input signal is output from a collector thereof.
Public/Granted literature
- US20150130537A1 POWER AMPLIFICATION MODULE Public/Granted day:2015-05-14
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