Patent · US Active

Equaliser for the intermediate frequency channel of an FMCW fill level sensor

US10371557B2 · kind B2 · utility

0Cited by

4References

12Claims

0Family size

Assignee

VEGA Grieshaber KG · DE

Inventors

Michael Fischer · Palo Alto, US
Roland Welle · Oberwolfach, DE
Karl Griessbaum · Nettetal, DE

Key dates

Filing date	Apr 2, 2014
Grant date	Aug 6, 2019
Priority date	—
Expiry date	Feb 26, 2035

Classification

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

Abstract

A FMCW fill level sensor comprising an equalizer that equalizes the intermediate frequency signal digitalized by an analog-digital converter. Equalizing is carried out, for example, in the form of convoluting the digitalized intermediate frequency signal by an equalizing function in the time domain. It is also possible to equalize the digitalized intermediate frequency signal by multiplying the signal by an equalizing function in the form of a transfer function G(ωk) to form the discrete frequency in the frequency domain. A digital filter can also be used. This can increase the accuracy with which the fill level is determined.

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