Method and apparatus for checking a circuit
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United States of America Patent
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Dec 26, 2017
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app pub date -
Feb 5, 2014
filing date -
Feb 7, 2013
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Abstract
A method for checking a circuit devised for contactless data communication, which comprises an antenna and an electronic component coupled with the antenna, comprises the following steps: generating an alternating magnetic field of a field strength, and arranging the circuit in the alternating field region. Then the electronic circuit is excited by means of an energy pulse. In a further step, an oscillation of the circuit in response to the excitation of the circuit by the energy pulse is captured. The captured oscillation of the circuit is finally evaluated, in particular with regard to a self-resonant frequency of the circuit.
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