Invention Grant
- Patent Title: Analog-digital converter chip and RF-IC chip using the same
- Patent Title (中): 模拟数字转换芯片和RF-IC芯片使用相同
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Application No.: US12273240Application Date: 2008-11-18
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Publication No.: US08169350B2Publication Date: 2012-05-01
- Inventor: Takashi Oshima , Taizo Yamawaki
- Applicant: Takashi Oshima , Taizo Yamawaki
- Applicant Address: JP Tokyo
- Assignee: Hitachi, Ltd.
- Current Assignee: Hitachi, Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Miles & Stockbridge P.C.
- Priority: JP2007-300615 20071120
- Main IPC: H03M1/10
- IPC: H03M1/10 ; H04B1/12 ; H04B1/18
Abstract:
A wireless receiving circuit having an analog-digital converter of digital calibration type constituted by plural analog-digital converter units, shares portions about digital calibration, and applies the result of calibration of one analog-digital converter unit to other analog-digital converter units to appropriately perform each digital calibration of the plural analog-digital converter units. For example, in a wireless receiving circuit having an analog-digital converter of digital calibration type constituted of an analog-digital converter unit of I side and an analog-digital converter unit of Q side, portions about digital calibration are shared, and a calibration result of I side is applied to Q side.
Public/Granted literature
- US20090131010A1 ANALOG-DIGITAL CONVERTER CHIP AND RF-IC CHIP USING THE SAME Public/Granted day:2009-05-21
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