Patent ID: 7496865
Filing Date: 2009-02-24
Classification: H03F,H03H

Abstract:
1. A modified analytical synthesis method of designing an Operational Transconductance Amplifiers and Capacitors (OTA-C) nth-order filter from 5 MHz to 5 GHz, comprising: a. generating an equal number of internal nodes, except input and output nodes, to that of an order of a transfer function of a synthesized circuit; b. giving each of all internal nodes, except the input and output nodes, a grounded capacitor and providing no extra capacitors in the circuit while all grounded capacitors are used for absorbing a shunt parasitic capacitance; c. generating only single-ended-input OTAs for overcoming a feed-through effect; and d. generating a least/minimum number of active and passive components for reducing power consumption, chip area, and noise.