Patent attributes
Nth-order OTA-C (Operational Transconductance Amplifiers and Capacitors) filter structures are realized by using the analytical synthesis method to achieve the following three important criteria simultaneously:filters use just n grounded capacitors, each of which is located at each of just n nodes in the realized circuit, because they use smaller area in the IC, and they can absorb equivalent shunt capacitive parasites;filters employ only single-ended-input OTAs to overcome the feed-through effects due to finite input parasitic capacitances associated with double-input OTAs to replace the same positions of the n given capacitors; andfilters have the least number-of components (passive and active) for a given order to reduce power consumption, chip areas, and noise.
