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:
Jan. 01, 2013
Filed:
Oct. 01, 2008
Barend Visser, Potchefstroom, ZA;
Petrus Paulus Kruger, Vredefort, ZA;
Ocker Cornelius DE Jager, Potchefstroom, ZA;
Barend Visser, Potchefstroom, ZA;
Petrus Paulus Kruger, Vredefort, ZA;
Ocker Cornelius De Jager, Potchefstroom, ZA;
North-West University, , ZA;
Abstract
A distributed low noise amplifier (DLNA) comprises at least a first amplifier partproviding a first pathform an input of the amplifier to an output of the amplifier and a second amplifier partproviding a second pathfrom the input to the output. Each of the first and second paths being associated with a respective and different change in phase. The difference being larger than degrees in a noise suppression band to cause a phase difference between noise generated by the amplifier arrangement propagating along the first and second paths and destructive interference of the noise before the output of the DLNA, thereby to suppress noise in the noise suppression band. The respective gains of the amplifier partstomay decrease in a direction from the input of the amplifier to the output thereof.