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. 13, 2013
Filed:
Jun. 15, 2009
Lars Sundström, Lund, SE;
Bengt Lindoff, Bjarred, SE;
Sven Mattisson, Bjarred, SE;
Filip Oredsson, Malmo, SE;
Tony Petersson, Malmo, SE;
Imad Ud Din, Lund, SE;
Lars Sundström, Lund, SE;
Bengt Lindoff, Bjarred, SE;
Sven Mattisson, Bjarred, SE;
Filip Oredsson, Malmo, SE;
Tony Petersson, Malmo, SE;
Imad ud Din, Lund, SE;
Telefonaktiebolaget LM Ericsson (publ), Stockholm, SE;
Abstract
A processing device () for processing an analog complex input signal generated by downconversion of an aggregated-spectrum radio-frequency signal in a radio-receiver (), wherein the complex input signal comprises a plurality of sub bands (S-S) scattered across a total frequency band () of the complex input signal. The processing device () comprises a plurality of processing paths (P-P). wherein each processing path (P-P) is adapted to process an associated sub band (S-S). Each processing path comprises a complex mixer (CM-CM) adapted to frequency translate the complex input signal, and an analog channel-selection filter (CSF-CSF) arranged to filter an output signal of the complex mixer (CM-CM) and pass the frequency translated associated sub band (S-S). A control unit () is adapted to receive control data indicating frequency locations of the sub bands (S-S) and, for each processing path (P-P). control the local oscillator signal of the complex mixer (CM-CM) of the processing path (P-P) based on the frequency location of the associated sub band (S-S) and the passband of the channel-selection filter (CSF-CSF) of the processing path (P-P), such that the frequency-translated associated sub band (S-S) appears within a passband of the channel-selection filter (CSF-CSF) of the processing path (P-P). The distortion monitored in the unused paths may be used to improve the performance of the used paths.