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    • 10. 发明授权
    • System and method to monitor broadband radio frequency transport systems
    • 监控宽带射频传输系统的系统和方法
    • US07603093B2
    • 2009-10-13
    • US11302723
    • 2005-12-14
    • Michael KremerWilliam J. MitchellPaul SchatzJerry TomsPhilip M. WalaBernard K. WiwelDean Zavadsky
    • Michael KremerWilliam J. MitchellPaul SchatzJerry TomsPhilip M. WalaBernard K. WiwelDean Zavadsky
    • H04B1/06H04B7/00
    • H04B17/327
    • A system to monitor gain in a broadband radio frequency transport system that includes a radio frequency antenna, a remote unit, and a host unit adapted to receive a signal from the remote unit over a transmission link. The remote unit includes a pilot tone generator adapted to generate at least one single-frequency tone having a known power level, a summing circuit operably associated with the pilot tone generator adapted to sum the single-frequency tone with the respective received radio frequency signal. Each host unit includes a pilot tone receiver circuit to receive the transmitted signal and detect the single-frequency tone transmitted over the transmission link. The host unit includes a controller to determine a gain within the transmission link and to determine if the gain is in a preset range of gains based on the power level of the received pilot tone.
    • 一种用于监测宽带射频传输系统中的增益的系统,该系统包括射频天线,远程单元和适于通过传输链路从远程单元接收信号的主机单元。 所述遥控单元包括适于产生具有已知功率电平的至少一个单频音调的导频音发生器,与所述导频音发生器可操作地相关联的求和电路,所述导频音发生器适于将所述单频音调与相应接收的射频信号相加。 每个主机单元包括一个导频音接收器电路,用于接收发送的信号并检测通过传输链路传输的单频音调。 主机单元包括控制器,用于确定传输链路内的增益,并且基于接收到的导频音调的功率电平来确定增益是否处于预设增益范围内。