Invention Grant
- Patent Title: RF receiver device
- Patent Title (中): 射频接收设备
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Application No.: US12359358Application Date: 2009-01-26
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Publication No.: US08041322B2Publication Date: 2011-10-18
- Inventor: Hiroji Akahori
- Applicant: Hiroji Akahori
- Applicant Address: JP Tokyo
- Assignee: Oki Semiconductor Co., Ltd.
- Current Assignee: Oki Semiconductor Co., Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Volentine & Whitt, PLLC
- Priority: JP2008-019026 20080130
- Main IPC: H04B1/06
- IPC: H04B1/06

Abstract:
A radio-frequency receiver includes an RF amplification circuit which amplifies a received RF signal and generates an amplified RF signal, a mixing circuit which converts the amplified RF signal into an intermediate-frequency signal, an IF amplification circuit which generates an amplified IF signal, a first level detection circuit which detects a level of the amplified RF signal, a second level detection circuit which detects a level of the IF signal, a third level detection circuit which detects a level of the amplified IF signal, a RF reference level generation circuit which generates an RF reference level based on one of respective detection signal levels of the first and second level detection circuits, and an RF gain control circuits which controls an amplification gain of the RF amplification circuit so that a detection signal level of the third level detection circuit becomes equal to the RF reference level.
Public/Granted literature
- US20090209219A1 RF RECEIVER DEVICE Public/Granted day:2009-08-20
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