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. 17, 2014
Filed:
Sep. 28, 2009
Stefan Andersson, Lund, SE;
Kirill Kozmin, Lund, SE;
Fredrik Tillman, Lund, SE;
Telefonaktiebolaget LM Ericsson (publ), Stockholm, SE;
Abstract
A technique of suppressing noise in a transmitter device () is provided, wherein the transmitter device () comprises a baseband signal processing stage () operating at baseband frequency and comprising a modulator () for converting a baseband signal into an RF signal, and an RF signal processing stage () operating at RF and comprising an amplifier (). A method implementation of this technique comprises the steps performed in a feedback loop () coupled around the amplifier () of tapping the RF signal processing stage downstream of the amplifier () to obtain an amplified RF signal comprising a baseband signal component and a noise component, downconverting the tapped RF signal to baseband frequency, removing the baseband signal component from the downconverted signal, upconverting the resulting signals still comprising the noise component to RF frequency and feeding the upconverted signal back to the RF signal processing stage upstream of the amplifier () thereby suppressing the noise component.