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:
Sep. 29, 2020

Filed:

Mar. 01, 2017
Applicant:

Telefonaktiebolaget Lm Ericsson (Publ), Stockholm, SE;

Inventors:

Staffan Ek, Lund, SE;

Tony Påhlsson, Lund, SE;

Henrik Sjöland, Lund, SE;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03C 3/09 (2006.01); G04F 10/00 (2006.01); H03L 7/087 (2006.01); H03L 7/089 (2006.01); H03L 7/099 (2006.01);
U.S. Cl.
CPC ...
H03L 7/087 (2013.01); G04F 10/005 (2013.01); H03L 7/0891 (2013.01); H03L 7/0992 (2013.01); H03C 3/0991 (2013.01);
Abstract

A system for phase control of a Phased Locked Loop, PLL, is disclosed. The system includes the PLL. The PLL includes an oscillator configured to generate an output signal; a frequency divider configured to generate a feedback signal by dividing the output signal from the oscillator; a first phase detector arrangement configured to output a first control signal to control the oscillator in response to a detection of a phase deviation between a reference signal and the feedback signal. A second phase detector is configured to receive the feedback signal from the frequency divider and the reference signal, and generate an output signal. A phase calibration circuit is configured to receive the output signal from the second phase detector and generate a second control signal to adjust a phase of the output signal of the oscillator.


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