Abstract
We have investigated an array of magnetoelectric (ME) detection sensor units and an equivalent scheme by which to model their magnetic-field detection sensitivity. The signal response, noise level, and signal-to-noise ratio (SNR) of an array of <i xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">m</i> units connected in parallel and serial modes have been analyzed. Our research shows that ME arrays in parallel increase the signal and noise currents by factors of <i xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">m</i> and radic <i xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">m</i> , respectively, while ME arrays in series do not increase the signal current but reduce the noise by radic <i xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">m</i> . Accordingly, we predict and experimentally confirm that the SNR increases by a factor of radic <i xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">m</i> , for both serial and parallel modes.
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