DIGITAL BASEBAND RECEIVER WITH DC DISCHARGE AND GAIN CONTROLCIRCUITS

    公开(公告)号:CA2528339A1

    公开(公告)日:2005-01-06

    申请号:CA2528339

    申请日:2004-05-06

    Abstract: A digital baseband (DBB) receiver for receiving and processing a wireless communication signal. The DBB receiver includes at least one low noise amplifier (LNA), at least one demodulator, a direct current (DC) discharge circuit and an LNA control circuit. The LNA selectively amplifies the communication signal. The demodulator outputs analog real and imaginary sign al components on real and imaginary signal paths, respectively, in response to receiving the communication signal from the LNA. The DC discharge circuit selectively discharges DC accumulating on at least one of the real and imaginary signal paths. The LNA control circuit turns the LNA on or off.

    Examiner
    97.
    发明专利
    Examiner 未知

    公开(公告)号:AU2004253066A1

    公开(公告)日:2005-01-06

    申请号:AU2004253066

    申请日:2004-05-05

    Abstract: A communication system including an amplifier, a receiver, an analog to digital converter (ADC) and an insertion phase variation compensation module. The amplifier receives a communication signal. If the amplifier is enabled, the amplifier amplifies the communication signal and outputs the amplified communication signal to the receiver. If the amplifier is disabled, the amplifier passes the communication signal to the receiver without amplifying it. The receiver outputs an analog complex signal to the ADC. The ADC outputs a digital complex signal to the insertion phase variation compensation module which counteracts the effects of a phase offset intermittently introduced into the communication signal when the amplifier is enabled or disabled.

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