Patent ID: 9201048
Filing Date: 2015-12-01
Classification: G01N,G01R

Abstract:
1. Apparatus configured to characterize a resonance behavior of one or more magnetostrictive and/or magnetoelastic resonators, the apparatus comprising: a first channel including one or more coils and the one or more magnetostrictive and/or magnetoelastic resonators, the first channel having a first impedance; a second channel having a second impedance different from the first impedance, the difference between the first and second impedances being attributable to the one or more magnetostrictive and/or magnetoelastic resonators of the first channel; a signal source coupled to the first channel and to the second channel, the signal source being configured to apply an input signal to both the first and second channels; a signal receiver coupled to the first channel and to the second channel, the signal source being configured to generate a combined output signal in response to output signals measured from both the first and second channels; and a processor coupled to the signal receiver and configured to (i) determine the resonance behavior of the one or more magnetostrictive and/or magnetoelastic resonators in response to the combined output signal and (ii) output a value indicative of the resonance behavior of the one or more magnetostrictive and/or magnetoelastic resonators as the resonance characterization.