The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 15, 2025
Filed:
Nov. 17, 2021
Intel Corporation, Santa Clara, CA (US);
Noam Familia, Modiin, IL;
Vadim Levin, Folsom, CA (US);
Intel Corporation, Santa Clara, CA (US);
Abstract
Embodiments herein relate to an apparatus and method for calibrating a notch filter which filters a power supply signal for a voltage-controlled oscillator (VCO). In one aspect, a control circuit performs a number of calibration cycles for the filter to determine a value of a calibration code for the filter which minimizes a change in a frequency of the output signal of the VCO due to a change in the voltage of the power supply signal. After each calibration cycle, the calibration code is adjusted based on whether the frequency of the output signal increase or decreases. The calibration cycles can therefore converge on an optimal calibration code which minimizes the change in frequency due to the change in voltage. This minimizes a sensitivity of the VCO to noise in the power supply signal.