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. 20, 2010
Filed:
May. 02, 2007
Zhi-ming Lin, Changhua, TW;
Zhi-Ming Lin, Changhua, TW;
National Changua University of Education, Changhua, TW;
Abstract
A non-linear transient analysis module and method for phase locked loop (PLL) is disclosed. The method includes a pulse cycle defined by the larger period of two input frequencies; a pulse width defined by the accumulation value of period difference. Each pulse cycle is divided into two linear regions, a first voltage at the beginning of the pulse cycle as an initial value then applying a first linear equation to obtain a second voltage, and then the second voltage as an initial value then applying a second linear equation to obtain a third voltage which is used to be an initial value for next pulse cycle. An average voltage of the first region and the second region is inputted into the VCO to generate an output as the PFD input. The aforementioned steps are repeated to complete a simulation of PLL transient response.