H - Electricity – 03 – H
Patent
H - Electricity
03
H
333/82
H03H 11/48 (2006.01) H03H 11/46 (2006.01) H03H 19/00 (2006.01)
Patent
CA 1162995
D 23,092 SWITCHED CAPACITOR BILINEAR RESISTORS by Man Shek Lee ABSTRACT OF THE DISCLOSURE A two terminal circuit comprising a capacitive element (with a negative capacitance of of value -C/2) connected between the terminals, and an integrated capacitor (with a positive capacitance C) having one and other sides thereof alternately or periodically connected to associated sides of the element and to ground for simulating a floating bilinear resistor having a resistance R = T/C across the terminals which satifies the bilinear transformation Image . This circuit is insensitive to both top and bottom plate parasitic capacitance effects associated with the capacitance when one terminal is connected to a voltage source and the other to a virtual ground point on the input to an operational amplifier. In alternate embodiments, the circuit simulates a grounded bilinear resistor when only one of the terminals is connected to ground, and when one terminal and one side of the capacitor are grounded. In many application the negative capacitive element may be absorbed by a positive capacitor of larger capacitance that is connected in parallel with it in a switched capacitor circuit.
377398
Gte Automatic Electric Incorporated
R. William Wray & Associates
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