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:
Jan. 25, 2022
Filed:
Dec. 21, 2020
Stichting Imec Nederland, Eindhoven, NL;
Johan van den Heuvel, Geldrop, NL;
Stichting IMEC Nederland, Eindhoven, NL;
Abstract
A signal generator has a nominal frequency control input and a modulation frequency control input and comprises an oscillator, with a first set of capacitors at least partially switchably connectable for adjusting a frequency of the oscillator as part of a phase-locked loop, and a second set of capacitors comprised in a modulation stage of the oscillator, switchably connectable for modulating the frequency and controlled by the modulation frequency control input; a modulation gain estimation stage configured to determine a frequency-to-capacitor modulation gain; and a modulation range reduction module configured for clipping a modulation range of the oscillator to a range achievable using the second set of capacitors, using the modulation gain averaging out, in time, a phase error caused by the said clipping; and mimicking the said clipping, additively output to the nominal frequency control input to compensate said PLL for the said modulation.