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发明申请
US20070270115A1 MOBILE WIRELESS COMMUNICATIONS DEVICE HAVING LOW-IF RECEIVER CIRCUITRY THAT ADAPTS TO RADIO ENVIRONMENT 有权
具有适应无线电环境的低中频接收机电路的移动无线通信设备

  • 专利标题： MOBILE WIRELESS COMMUNICATIONS DEVICE HAVING LOW-IF RECEIVER CIRCUITRY THAT ADAPTS TO RADIO ENVIRONMENT
  • 专利标题（中）： 具有适应无线电环境的低中频接收机电路的移动无线通信设备
  • 申请号： US11383501
    申请日： 2006-05-16
  • 公开(公告)号： US20070270115A1
    公开(公告)日： 2007-11-22
  • 发明人: Oleksiy Kravets
  • 申请人： Oleksiy Kravets
  • 申请人地址： CA Waterloo
  • 专利权人： RESEARCH IN MOTION LIMITED
  • 当前专利权人： RESEARCH IN MOTION LIMITED
  • 当前专利权人地址： CA Waterloo
  • 主分类号： H04B1/10
  • IPC分类号： H04B1/10 ;  H04B1/18
MOBILE WIRELESS COMMUNICATIONS DEVICE HAVING LOW-IF RECEIVER CIRCUITRY THAT ADAPTS TO RADIO ENVIRONMENT
摘要：
A mobile wireless communications device, system and associated method includes a housing and circuit board that includes radio frequency (RF) circuitry and processor operative with each other. The RF circuitry includes a low-IF receiver circuit that is operative for maintaining an interferer signal at a same frequency side as a wanted signal relative to a local oscillator frequency setting, creating an interferer image signal, and filtering the image signal as substantially baseband frequency.
摘要（中）：

移动无线通信设备，系统和相关联的方法包括壳体和电路板，其包括彼此可操作的射频（RF）电路和处理器。 RF电路包括低IF接收器电路，其用于在与本地振荡器频率设置相关的有用信号的相同频率侧保持干扰信号，产生干扰源图像信号，并将图像信号作为基本频率 。

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