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Second-order filter with notch for use in receivers to effectively suppress the transmitter blockers
Second-order filter with notch for use in receivers to effectively suppress the transmitter blockers
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机译:带有陷波的二阶滤波器,用于接收机中,可有效抑制发射机阻塞
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摘要
The disclosed invention relates to a transceiver system comprising a notch filter element configured to suppress transmitter blockers (i.e., transmitter interferer signals) within a reception path. In some embodiments, the transceiver front-end comprises a differential reception path, having a first differential branch and a second differential branch, configured to provide an RF differential input signal having a transmitter blocker to a transimpedance amplifier, comprising a first-order active filter and a notch filter element. The notch filter element comprises a stop band corresponding to a frequency of a transmitted signal, such that the notch filter element suppresses the transmitted blocker without degrading the signal quality of the received differential input signal.
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