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:
Feb. 13, 2018
Filed:
May. 17, 2016
Applicant:
Nxp B.v.;
Inventor:
Ulrich Moehlmann, Hamburg, DE;
Assignee:
NXP B.V., Eindhoven, NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03D 3/24 (2006.01); H04L 7/033 (2006.01); H03L 7/093 (2006.01); H03L 7/091 (2006.01); H03L 7/099 (2006.01); H04B 1/12 (2006.01);
U.S. Cl.
CPC ...
H04L 7/0331 (2013.01); H03L 7/091 (2013.01); H03L 7/093 (2013.01); H03L 7/0991 (2013.01); H04B 1/12 (2013.01); H03L 2207/50 (2013.01);
Abstract
A phase locked loop, comprising: a phase detector configured to determine a phase difference (Δφ) between a reference signal and a feedback signal; a loop filter configured to perform a filtering operation on a signal derived from the phase difference, and to provide a control signal; a frequency controlled oscillator configured to receive the control signal and provide an output signal with a frequency that varies according to the control signal; wherein a low-pass filter is provided between the phase detector and the loop filter and/or between the loop filter and the frequency controlled oscillator to reduce quantization noise from the phase detector.