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:
Oct. 25, 2016
Filed:
Mar. 29, 2012
Ville Viikari, Espoo, FI;
Heikki Seppä, Espoo, FI;
Tomi Mattila, Espoo, FI;
Ari Alastalo, Espoo, FI;
Mark Allen, Espoo, FI;
Timo Varpula, Espoo, FI;
Ville Viikari, Espoo, FI;
Heikki Seppä, Espoo, FI;
Tomi Mattila, Espoo, FI;
Ari Alastalo, Espoo, FI;
Mark Allen, Espoo, FI;
Timo Varpula, Espoo, FI;
Abstract
Described herein is a passive wireless resonating non-linear sensor that is typically based on a ferroelectric varactor. The sensor replies its data at an intermodulation frequency when a reader device illuminates it at two closely-located frequencies. Furthermore, described herein is a general intermodulation read-out principle for passive wireless sensors. A sensor utilizes a mixing element, such as a varactor and it can be equipped with a capacitive, inductive, or resistive sensor element. When the sensor is illuminated with signals with two frequencies it replies the sensor data at an intermodulation frequency.