Biotelemetric Wireless Intracranial Pressure Monitoring: An In Vitro Study

Figure 6

Measurement results obtained from sensor B. (a) Magnitude and (b) phase angle of the reader antenna’s input impedance. (c) Reflection phase of the sensor as a variable load. (d) Shift in the resonance frequency of the sensor as a function of pressure. (e) Phase dip variation. (f) Phase shift versus applied pressure.

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