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:
Jul. 09, 2013
Filed:
Mar. 24, 2010
Christoph Kuratli, Bern, CH;
Christoph Kuratli, Bern, CH;
EM Microelectronic-Marin S.A., Marin, CH;
Abstract
The active transponder includes an input amplifier () arranged between an envelope detector () and a demodulation circuit (). It further includes an activation unit () for the input amplifier and also for the demodulation circuit, which is formed by a frequency changer or mixer circuit (), which decreases a significant modulation frequency of the modulated signal received by the antenna to a low frequency, the resulting low frequency signal then being amplified and filtered by low frequency elements. The activation unit thus consumes little electric power and sends a wake up signal to the elements operating at a high frequency when it detects said significant modulation frequency, in a very selective manner.