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:
Mar. 07, 2006
Filed:
Oct. 13, 1999
Tore André, Älvsjö, SE;
Uno Torstensson, Östhammar, SE;
Tore André, Älvsjö, SE;
Uno Torstensson, Östhammar, SE;
Telefonaktebolaget LM Ericsson (publ), Stockholm, SE;
Abstract
The present invention relates to an apparatus for cancellation of electromagnetic interferences (n), including means () for dividing a reference signal (s) into a first and second signal (s, s) having different phases, tow multipliers () for each multiplying a weight coefficient to one of the phase displaced signals (s, s) each and for outputting a multiplied signal each, and adder () for adding the two multiplied signals and for outputting a corrected reference signal (s), and a subtracter () for subtracting the corrected reference signal (s), from an input signal (s) and for outputting an error signal (s). According to the invention different weight coefficients (l(f), Q(f)) are used for different frequencies or frequency bands (f) of the interference (n).