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METHOD AND APPARATUS FOR CALIBRATION OF A BAND-PASS FILTER AND SQUELCH DETECTOR IN A FREQUENCY-SHIFT KEYING TRANSCEIVER
METHOD AND APPARATUS FOR CALIBRATION OF A BAND-PASS FILTER AND SQUELCH DETECTOR IN A FREQUENCY-SHIFT KEYING TRANSCEIVER
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机译:频移键控收发器中的带通滤波器和静噪检测器的校准方法和装置
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摘要
Various embodiments relate to a method for calibration of a center frequency of a BPF in an FSK transceiver, the method including the steps of filtering a carrier frequency signal by the BPF to produce a filtered signal, detecting, by a phase-frequency detector (“PFD”), a difference in phase between the carrier frequency signal and the filtered signal from the BPF, sweeping a calibration code of the BPF, detecting a transition in the sign of the phase difference and capturing a calibration code associated with the transition in the sign of the phase difference for calibration of the BPF.
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