Orthogonal Multitone Electrical Impedance Spectroscopy (OMEIS) for the Study of Fibrosis Induced by Active Cardiac Implants

Figure 6

Spectrum of a resistance voltage signal (spectrum in lower part) form a voltage divider circuit between and the test impedance powered by the multitone signal (spectrum in upper part). The values of the test impedance are shown. The markers () show the amplitude difference, in dB, between both spectra at the frequencies of 19.53 kHz and 488.28 kHz. The second signal was intentionally shifted 20 dB downward for better visibility.