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, 2011
Filed:
May. 15, 2007
Christa Nohammer, Vienna, AT;
Daniel Paulo Wiese Meneses Rocha, Queijas, PT;
Caspar Van Vroonhoven, EJ Den Haag, NL;
Michael Johannes Vellekoop, Hinterbruhl, AT;
Christa Nohammer, Vienna, AT;
Daniel Paulo Wiese Meneses Rocha, Queijas, PT;
Caspar Van Vroonhoven, EJ Den Haag, NL;
Michael Johannes Vellekoop, Hinterbruhl, AT;
Austrian Research Centers GmbH-ARC, Vienna, AT;
Abstract
An electronic biosensor arrangement (), comprising a receiving region () for biological material, a sensor-electrode arrangement () with sensor electrodes () which intermesh in a comb-like manner being associated therewith, with which sensor electrodes () a measuring circuit () is connectable for measuring an electrical measurement parameter on the sensor electrodes () and influenced by biological material, wherein the sensor electrodes () form a plurality of sensor capacitors (Cto C), with which electronic switching means (Sto S) driven by a control logic () are associated for connecting to earth or to a voltage source carrying a measurement voltage (V), respectively, comprising a reference capacitor (C), to which a switching means (S) driven by the control logic () and arranged for optionally connecting to earth or to the measurement voltage (V) is likewise assigned, wherein the capacitors (C, C−C) are also combined to a node (A), which is connected to an input (−) of a differential amplifier (), and with which measurement capacitors (Cto C) having binary-weighted capacities (Cto 32C) are furthermore connected for forming an SAR comparison unit, with the measurement capacitors being also selectively connectable via switching means (Sto S) driven by the control logic () to a voltage source (V) or to earth for the purpose of providing charge-difference for SAR conversion.