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. 22, 2016
Filed:
Nov. 29, 2012
Ams R&d Analogni Polprevodniki, D.o.o., Ljubljana, SI;
Vinko Kunc, Ljubljana, SI;
Jernej Rozman, Ravne Na Koroskem, SI;
Maja Atanasijevic-Kunc, Ljubljana, SI;
AMS R&D ANALOGNI POLPREVODNIKI, D.O.O., Ljubljana, SI;
Abstract
A method is performed for a signal transmitted by an RFID interrogator being a radiofrequency electromagnetic sine wave. An amplitude noise contribution RSdto a demodulated received signal RSd within a frequency interval of a low-pass filter is determined by means of a measured demodulated transmitted signal TSd as RSd=k.TSd in that a dc component DCin said demodulated received signal RSd and a dc component DCin said demodulated transmitted signal TSd are measured and a conversion factor k is determined as k=DC:DC. A receiver output signal O is continuously generated out of the received signal by subtracting said amplitude noise contribution RSdfrom the demodulated received signal RSd, filtering the cleaned signal RSd-k.TSd by the low-pass filter and amplifying it. The conversion factor is determined in an exceptionally simplified way as said ratio of said dc components. No receiving interruptions are needed.