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:
Aug. 25, 2009
Filed:
May. 19, 2004
Applicants:
Tony Fonden, Spanga, SE;
Lars Richard Birger Hellberg, Huddinge, SE;
Mats Klingberg, Enskede, SE;
Inventors:
Assignee:
Telefonaktiebolaget L M Ericsson (Publ), Stockholm, SE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B 1/04 (2006.01); H03C 1/62 (2006.01); H04K 1/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
An adaptive predistortion arrangement includes means () for up-converting a baseband signal (S) into an intermediate frequency signal (S) having frequency aliazing and means () for down-converting a radio frequency signal (S) into an intermediate frequency signal (S) having the same frequency aliazing as the up-converted baseband signal. An adapter () adapts predistortion parameters to keep the up-converted baseband signal equal to the down-converted radio frequency signal.