The filter section uses switched capacitor techniques for high-and low-group filters and dial-tone rejection.
An auto-tracking filter of switched capacitor is recommended.
Then, adopting reactive current margin and harmonics as control and protection variable, an expert system was formed to control thyristor switched capacitor.
FIG. 1 schematically illustrates the input stage of a switched capacitor analog to digital converter.
Through inductor optimization, the VCO has a low phase noise and a wide tuning range with switched capacitor array and NMOS varactor.
