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:
Feb. 11, 2020

Filed:

Mar. 21, 2018
Applicant:

Qorvo Us, Inc., Greensboro, NC (US);

Inventors:

Xia Li, Utrecht, NL;

Hendrik Arend Visser, Wijchen, NL;

Assignee:

Qorvo US, Inc., Greensboro, NC (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03L 7/00 (2006.01); H03C 3/09 (2006.01); H03L 7/197 (2006.01); H03D 7/16 (2006.01);
U.S. Cl.
CPC ...
H03C 3/0933 (2013.01); H03C 3/0925 (2013.01); H03D 7/163 (2013.01); H03L 7/1976 (2013.01);
Abstract

Frequency synthesizer circuitry includes multi-phase clock generator circuitry, frequency divider circuitry, signal retiming circuitry, and signal combining circuitry. The multi-phase clock generator circuitry receives an input clock signal and generates a number of multi-phase clock signals. The frequency divider circuitry also receives the input clock signal and performs frequency division thereon to generate a reference signal. The signal retiming circuitry receives the reference signal and the multi-phase clock signals and generates a number of retiming signals. The signal combining circuitry combines two of the retiming signals to provide an output clock signal that has the same frequency as the reference signal but a different duty cycle.


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