发明申请
US20070178863A1 AM/FM tuner saw filter-less architecture using AM frequency band up-conversion 审中-公开
AM / FM调谐器使用AM频段上变频来实现无滤波器架构

  • 专利标题: AM/FM tuner saw filter-less architecture using AM frequency band up-conversion
  • 专利标题(中): AM / FM调谐器使用AM频段上变频来实现无滤波器架构
  • 申请号: US11471917
    申请日: 2006-06-21
  • 公开(公告)号: US20070178863A1
    公开(公告)日: 2007-08-02
  • 发明人: G. Tyson TuttleDan B. Kasha
  • 申请人: G. Tyson TuttleDan B. Kasha
  • 主分类号: H03D5/00
  • IPC分类号: H03D5/00
AM/FM tuner saw filter-less architecture using AM frequency band up-conversion
摘要:
A receiver for AM and FM broadcast signals is disclosed. FM signals are received from an FM antenna and then processed by receive path circuitry or an FM tuner integrated circuit (IC) to produce audio output signals, such as digital audio output signals. The AM signals are received by an AM antenna and then up-converted using a fixed-clock to a frequency range nearer to the FM signal frequencies. The up-converted AM frequencies are then processed using the receive path circuitry. A multiplexer (MUX) allows for selection of the FM signals or the up-converted AM signals to be passed through for signal processing.
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