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:
Jun. 19, 2018
Filed:
Mar. 20, 2015
Telefonaktiebolaget Lm Ericsson (Publ), Stockholm, SE;
TELEFONAKTIEBOLAGET LM ERICSSON (PUBL), Stockholm, SE;
Abstract
The programmable frequency control system presented herein provides frequency programmability and phase noise reduction for signals generated by a plurality of frequency programmable phase-locked loops (PLLs). In general, a modulated data stream input to each of the plurality of PLLs controls the frequency of the signal output by the PLLs. The solution presented herein reduces the phase noise by introducing a time shift to the modulated data stream applied to at least some of the PLLs so that at least some of the PLLs receive time-shifted versions of the modulated data stream relative to other PLLs. In so doing, the solution presented herein decorrelates the quantization noise generated by the plurality of frequency programmable PLLs.