Patent · US Active

Independent reference pulse generation

US7710125B2 · kind B2 · utility

6Cited by

7References

18Claims

0Family size

Assignee

VEGA Grieshaber KG · DE

Inventors

Daniel Schultheiss
Josef Fehrenbach · Lenzkirch, DE
Christoph Mueller · Bern, CH
Bernhard Corbe · Schutterwald, DE

Key dates

Filing date	Jul 18, 2007
Grant date	May 4, 2010
Priority date	—
Expiry date	Dec 20, 2027

Classification

Technology area (CPC G)Physics
CPC primaryG01S13/88
WIPO fieldMeasurement
WIPO sectorInstruments

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.