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:
Dec. 06, 2016
Filed:
May. 31, 2014
The Regents of the University of Michigan, Ann Arbor, MI (US);
Muhammad Faisal, Ann Arbor, MI (US);
David D. Wentzloff, Ann Arbor, MI (US);
The Regents of the University of Michigan, Ann Arbor, MI (US);
Abstract
An all digital phase-locked loop (PLL) and a method of controlling the PLL is provided. The method includes the steps of receiving a reference signal (f) at a controller and a time-to-digital converter (TDC), the controller and TDC being coupled to multiple tunable delay elements; receiving at the multiple tunable delay elements a first signal input via the controller and a pulse-width modulation (PWM) circuit; providing an PLL output (f) to the TDC at least partially based on the first signal input; and generating a phase error output (Φ) based on the reference signal (f) and the PLL output (f), wherein the phase error output (Φ) is provided as feedback to the controller to control the PLL output (f).