Self-tuning narrow-band receiver

摘要

To implement a narrow-band receiver with extremely high quality factor and, respectively, narrow bandwidth, it is proposed to use a circuit capable of resonating which can be adjusted by electrical quantities with respect to the frequency of resonance and quality factor, that a microcomputer continuously measures the frequency and bandwidth and, on the basis of these measurement results, outputs the electrical adjusting quantities for the resonant circuit in such a manner that the desired frequency and bandwidths are obtained accurately.