发明授权
US08964904B2 Receiver filter for DC-wander removal in a contactless smartcard
有权
接收器滤波器，用于在非接触式智能卡中移除DC漂移
- 专利标题： Receiver filter for DC-wander removal in a contactless smartcard
- 专利标题（中）： 接收器滤波器，用于在非接触式智能卡中移除DC漂移
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申请号： US13735780申请日： 2013-01-07
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公开(公告)号： US08964904B2公开(公告)日： 2015-02-24
- 发明人: Massimo Ciacci , Remco Cornelis Herman van de Beek , Ghiath Al-Kadi
- 申请人： NXP B.V.
- 申请人地址： NL Eindhoven
- 专利权人： NXP B.V.
- 当前专利权人： NXP B.V.
- 当前专利权人地址： NL Eindhoven
- 主分类号： H04L27/22
- IPC分类号： H04L27/22 ; H04B1/16 ; H04L25/03 ; H04L25/06 ; H04B1/00
摘要：
Embodiments of a method for processing a baseband signal in a Direct Current (DC)-suppressed system, a system for processing a baseband signal in a DC-suppressed system, and a smart card are described. In one embodiment, a method for processing a baseband signal in a DC-suppressed system involves processing the baseband signal in the analog domain with a first high pass filter (HPF), converting the processed baseband signal to a digital signal, and processing the digital signal in the digital domain with a second HPF to provide a discrete-time differentiation of the baseband signal. Other embodiments are also described.
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