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.

Date of Patent:
Sep. 26, 2000

Filed:

Dec. 15, 1997
Applicant:
Inventors:

Wolfgang Bornhofft, Seevetal, DE;

Gerhard Trenkler, Barsbuttel, DE;

Assignee:
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G01R / ; G01V / ; G01V / ;
U.S. Cl.
CPC ...
324345 ; 324258 ;
Abstract

A matching amplifier for an induction probe which detects low-frequency alternating magnetic fields of floating bodies propagating in water. The matching amplifier has an isolating amplifier and a frequency response-determining network, with the network being provided with a frequency pass region having a band-pass characteristic and an integrating response in the band pass for the purpose of canceling the decorrelation of the measuring values emitted by the induction probe, with the integrating response being matched to compensate for the decorrelation of the measuring signal of the induction probe generated by the differentiating effect of the induction probe.


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