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:
May. 04, 2010
Filed:
Jul. 18, 2007
Daniel Schultheiss, Hornberg, DE;
Josef Fehrenbach, Haslach, DE;
Christoph Mueller, Oppenau, DE;
Bernhard Corbe, Schutterwald, DE;
Daniel Schultheiss, Hornberg, DE;
Josef Fehrenbach, Haslach, DE;
Christoph Mueller, Oppenau, DE;
Bernhard Corbe, Schutterwald, DE;
Vega Grieshaber KG, Wolfach, DE;
Abstract
In fill-level measuring devices according to the pulse-transit-time method, a reflection that is generated internally in a microwave module is used as a reference for transit time measuring. For generating the reference pulse, the microwave module comprises its own sampling mixer or its own oscillator. Subsequently, the echo signal and the reference pulse can be further processed separately or together. No delay line is necessary on the transmission frequency of the radar sensor. Interference as a result of leakage signals is largely prevented.