Digitally controlled ground capacitor multiplier
AssigneesSaudi Arabian Oil Company, King Fahd University of Petroleum and Minerals
InventorsAbdulrahman Alshuhail, Hussain Alzaher, Alaa El-Din Hussein
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Abstract
A digitally controlled grounded capacitor multiplier includes: a single capacitor directly connected at one end to an input voltage and at another end to a negative input of an operational amplifier; the operational amplifier including a negative feedback loop; and a digitally controlled current amplifier (DCCA) connected to an output of the operational amplifier. The DCCA digitally controls the digitally controlled grounded capacitor multiplier. The digitally controlled grounded capacitor multiplier comprises only two active devices consisting of the operational amplifier and the DCCA.
Claims20
A digitally controlled grounded capacitor multiplier comprising:
- a single capacitor directly connected at one end to an input voltage and at another end to a negative input of an operational amplifier;
- the operational amplifier comprising a negative feedback loop;
- and
- a digitally controlled current amplifier (DCCA) connected to an output of the operational amplifier, wherein the DCCA digitally controls the digitally controlled grounded capacitor multiplier, wherein
- the digitally controlled grounded capacitor multiplier comprises only two active devices consisting of the operational amplifier and the DCCA.
A low pass filter comprising:
- a first resistor connected at a first end to an input source;
- and
- a digitally controlled grounded capacitor multiplier, wherein
- the digitally controlled grounded capacitor multiplier comprises:
- a single capacitor directly connected at one end to a second end of the resistor and at another end to a negative input of an operational amplifier;
- the operational amplifier comprising a negative feedback loop;
- and
- a digitally controlled current amplifier (DCCA) connected to an output of the operational amplifier, wherein the DCCA digitally controls the digitally controlled grounded capacitor multiplier, wherein
- the digitally controlled grounded capacitor multiplier comprises only two active devices consisting of the operational amplifier and the DCCA.
Dependencies are inferred from the claim text.