Invention Grant
US08928400B2 Semiconductor device having first and second demodulation circuits for wireless communication
有权
具有用于无线通信的第一和第二解调电路的半导体器件
- Patent Title: Semiconductor device having first and second demodulation circuits for wireless communication
- Patent Title (中): 具有用于无线通信的第一和第二解调电路的半导体器件
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Application No.: US13298897Application Date: 2011-11-17
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Publication No.: US08928400B2Publication Date: 2015-01-06
- Inventor: Takayuki Tsukamoto
- Applicant: Takayuki Tsukamoto
- Applicant Address: JP Kawasaki-shi, Kanagawa
- Assignee: Renesas Electronics Corporation
- Current Assignee: Renesas Electronics Corporation
- Current Assignee Address: JP Kawasaki-shi, Kanagawa
- Agent Womble Carlyle
- Priority: JP2010-263516 20101126
- Main IPC: H03D1/00
- IPC: H03D1/00 ; H04L27/06 ; H04B5/00
Abstract:
A device receives ASK signals by using an ASK signal receiving circuit that is different from an ASK signal receiving circuit for R/W mode, when an NFC-enabled semiconductor device operates in a mode other than the R/W mode. An ASK signal receiving circuit for 100% ASK is provided on the side of a pair of transmitting terminals. This arrangement eliminates the influence of an ESD provided within an ASK signal receiving circuit for 10% ASK coupled to a pair of receiving terminals. There is no need for management of threshold values that are different according to type of ASK and it is possible to support different modulation schemes by a smaller circuit configuration.
Public/Granted literature
- US20120134444A1 Semiconductor Device Having First and Second Demodulation Circuits for Wireless Communication Public/Granted day:2012-05-31
Information query
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