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    • 42. 发明授权
    • Receiver arrangement with AC coupling
    • 接收器配置与交流耦合
    • US08428543B2
    • 2013-04-23
    • US13088768
    • 2011-04-18
    • Bernd AdlerDieter PimingsdorferHarald PretlWerner Schelmbauer
    • Bernd AdlerDieter PimingsdorferHarald PretlWerner Schelmbauer
    • H04B1/10
    • H03D3/008H04B1/30
    • A receiver arrangement with AC coupling is specified in which a filter arrangement (3) is provided in a baseband signal processing chain in a homodyne receiver and can be switched between at least two high-pass filter cut-off frequencies. In this case, a brief changeover is made to a higher cut-off frequency when varying the gain of a low-noise baseband amplifier (2), for example when the received field strength changes, during the reception mode. The described arrangement allows changes to be carried out to the gain in baseband during the normal reception mode. The present receiver is accordingly suitable for code division multiple access methods, such as those which are provided in the UMTS Standard.
    • 规定了具有AC耦合的接收器装置,其中滤波器装置(3)设置在零差接收器中的基带信号处理链中,并且可以在至少两个高通滤波器截止频率之间切换。 在这种情况下,例如当在接收模式期间接收到的场强变化时,改变低噪声基带放大器(2)的增益时,对较高的截止频率进行简单的切换。 所描述的布置允许在正常接收模式期间对基带中的增益进行改变。 因此,本接收机适合于诸如在UMTS标准中提供的那些的码分多址方法。