Error compensation by measurement of the STC filter function
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United States of America Patent
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Aug 1, 2017
Grant Date -
Apr 9, 2015
app pub date -
May 3, 2013
filing date -
May 3, 2012
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Abstract
Level measuring device which can compensate the distortions, caused by an STC filter, of the received signal, by measuring a reference signal which passes through the receiving branch and also through the STC filter, during the ongoing operation of the level measuring device or during manufacture. For example, after passing through the receiving branch, this reference signal can be fed to a microprocessor which can calculate the correction values of the IF signal therefrom. A switch can be provided which can switch over between the reference signal and the IF signal.
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