Invention Grant
- Patent Title: Amplifier circuit
- Patent Title (中): 放大器电路
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Application No.: US12547625Application Date: 2009-08-26
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Publication No.: US08164385B2Publication Date: 2012-04-24
- Inventor: Yukito Tsunoda , Mariko Sugawara
- Applicant: Yukito Tsunoda , Mariko Sugawara
- Applicant Address: JP Kawasaki
- Assignee: Fujitsu Limited
- Current Assignee: Fujitsu Limited
- Current Assignee Address: JP Kawasaki
- Agency: Fujitsu Patent Center
- Priority: JP2008-220000 20080828
- Main IPC: H03F3/45
- IPC: H03F3/45
Abstract:
An amplifier circuit includes a first amplifier amplifying an input signal and outputting a first amplified signal, a second amplifier amplifying the first amplified signal and outputting a second amplified signal, and a feedback circuitry feeding back the second amplified signal to the input of the second amplifier. The feedback circuitry includes a feedback transistor that keeps the input level of the second amplifier constant.
Public/Granted literature
- US20100052790A1 AMPLIFIER CIRCUIT Public/Granted day:2010-03-04
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