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Sketch of the waveform-selective cloaking concept applied to a wire antenna. (a) Cloaking effect switches ON if illuminated by a pulse signal (PW), and the antenna becomes invisible. (c) Cloaking effects switches OFF if illuminated by a continuous signal (CW), and the antenna operates in the usual way in both reception and transmission. (b) Waveform-selective circuit consisting of a diode bridge rectifier and a series combination of an inductance (L) and a resistor (R) connected in parallel to the input and output ports (adapted from ).
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