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    • 10. 发明申请
    • FRONT-END ARRANGEMENTS FOR MULTIBAND MULTIMODE COMMUNICATION ENGINES
    • 多通道多通道发动机的前端装置
    • WO2005039060A2
    • 2005-04-28
    • PCT/IB2004/002647
    • 2004-08-13
    • NOKIA CORPORATIONNOKIA INC.ELLÄ, JuhaMARTIN, NigelKYLÄKOSKI, Janne
    • ELLÄ, JuhaMARTIN, NigelKYLÄKOSKI, Janne
    • H04B
    • H04B1/0057H04B1/0064H04B1/18H04B1/48
    • A receive front-end module in a multi-band communication device. The communication device comprises a plurality of signal paths for receiving and transmitting communication signals in a plurality of frequency bands in GSM and W-CDMA modes. The signal paths in the receive front-end module are operatively connected to a common feed point, which is connected to one of the RF antennas of the communication device, and the signal paths are selected such that no frequency bands for receiving communication signals in the receive front-end module are overlapping. If the communication device also transmits the communication signal in at least one transmit frequency range partially overlapping with one of the frequency bands in the receive front-end module, switching means is provided to at least one of signal paths in the receive front-end module for providing cross-band isolation between the transmitted and received communication signals.
    • 在多频带通信设备中的接收前端模块。 通信设备包括用于在GSM和W-CDMA模式中的多个频带中接收和发送通信信号的多个信号路径。 接收前端模块中的信号路径可操作地连接到公共馈电点,公共馈电点连接到通信装置的RF天线中的一个,并且信号路径被选择为使得没有频带用于接收通信信号 接收前端模块是重叠的。 如果通信设备还在与接收前端模块中的一个频带部分重叠的至少一个发射频率范围内发送通信信号,则将接收前端模块中的信号路径中的至少一个提供开关装置 用于在发送和接收的通信信号之间提供跨频带隔离。