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.

Date of Patent:
Aug. 16, 2022

Filed:

Mar. 22, 2021
Applicant:

Infineon Technologies Ag, Neubiberg, DE;

Inventors:

Andreas Schwarz, Oepping, AT;

Dmytro Cherniak, Villach, AT;

Luigi Grimaldi, Villach, AT;

Assignee:

INFINEON TECHNOLOGIES AG, Neubiberg, DE;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03D 3/24 (2006.01); H03L 7/197 (2006.01); H03L 7/099 (2006.01); H03L 7/093 (2006.01);
U.S. Cl.
CPC ...
H03L 7/1978 (2013.01); H03L 7/093 (2013.01); H03L 7/0992 (2013.01); H03L 2207/50 (2013.01);
Abstract

In accordance with an embodiment, a method of operating a fractional-N phase locked loop (FN-PLL) includes: dividing a first clock signal using a multi-modulus divider (MMD) based on a modulus control signal to form a frequency-divided clock signal, where the first clock signal is based on an output clock of the PLL; generating the modulus control signal based on a divider control input value using a delta-sigma modulator (DSM); and when a fractional portion of the divider control input value is within a first range of values, and repeatedly removing a first number of clock cycles from the first clock signal before dividing the first clock signal using the MMD, where the first number of clock cycles is a non-integer number of clock cycles.


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