Improvements introduced in analogue adapted filters of coupled devices. (Machine-translation by Google Translate, not legally binding)

摘要

Improvements introduced in analog adaptive filters of load-coupled devices in which a coefficient weighting is performed by dividing one of the multi-phase synchronization signal electrodes into first and second area portions, and the output of the matched filter is detected by adding the synchronization current related to the signal required to charge all of the first area portions and all of the second area portions and combining these summed values in a differential amplifier, said first and second area portions are connected to respective lines of identical phase sync signal, and for each of said identical phase sync signal lines are provided: (a) a storage capacitor whose value is substantially greater than the total capacity of the electrode portions connected to that line of cited synchronization signal: (b) first means commutes semiconductor operators operable by a pulse applied during a first synchronism pulse period to connect the storage capacitor to a reference voltage and charge the capacitor to the reference voltage; (c) second semiconductor means responsive to variations in the charge level of said capacitor to generate a corresponding output signal; (d) third semiconductor switching means operable by a pulse supplied during a second period of sync pulse to connect the storage capacitor to that identical phase sync signal line; (e) fourth semiconductor switching means operable during a pulse applied during the first synchronism pulse period to connect said cited phase sync signal line to ground and discharge the electrode portions connected to that synchronism signal line until a reference value such that during the second period of synchronization signal the storage capacitor is discharged in an amount proportional to the signal charge stored by said electrode portions connected to said cited signaling line, thereby varying the magnitude of the polarization of the control electrode in the second semiconductor switching means and resulting in a corresponding change in said signal output; and (f) the differential amplifier having inputs connected to receive the signal outputs cited from each of the second semiconductor means and regenerating in response thereto an adapted filter output signal. (Machine-translation by Google Translate, not legally binding)