Method and apparatus for directly digitizing microwave signals

US6911929B2 · kind B2 · utility

Assignee

• VEGA Grieshaber KG · DE

Inventor

• Robert Laun · Hausach, DE

Key dates

• Filing date: Aug 20, 2002
• Grant date: Jun 28, 2005
• Expiry date: Sep 17, 2022

Classification

• Technology area (CPC G): Physics
• CPC primary: G01S13/88
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

Described is a method and an apparatus of directly digitizing microwave signals reflected at a filling product surface of a filling product present in a receptacle, in which method the microwave signals reflected at the filling product surface are sampled unmodified in their frequency, and the therefrom resulting analog values are converted into digital values, with successive digital values being stored in various intermediate memories, and the intermediately stored digital values are read out from the intermediate memories and are stored in a terminal memory unit, to which accesses an evaluation arrangement which determines the filling level height.