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Assistant Professor Aatmesh Shrivastava Awarded Patent

ECE Assistant Professor Aatmesh Shrivastava was awarded a patent for “Low voltage crystal oscillator (XTAL) driver with feedback controlled duty cycling for ultra low power.”


Abstract Source: USPTO

A low voltage crystal oscillator (XTAL) driver with feedback controlled duty cycling for ultra low power biases an amplifier for an XTAL in the sub-threshold operating regime. A feedback control scheme can be used to bias the amplifier for an XTAL biased in the sub-threshold operating regime. The amplifier of a XTAL oscillator can be duty cycled to save power, e.g., the XTAL driver can be turned off to save power when the amplitude of the XTAL oscillation reaches a maximum value in range; but be turned back on when the amplitude of the XTAL oscillation starts to decay, to maintain the oscillation before it stops. In addition or alternatively, a feedback control scheme to duty cycle the amplifier of a XTAL oscillator can be used to monitor the amplitude of the oscillation.

Related Faculty: Aatmesh Shrivastava

Related Departments:Electrical & Computer Engineering