| 摘要 |
A material properties detection system ( 100 ). The system can include an antenna ( 120 ) that is tuned for operation within a frequency band over which the antenna transmits. The system also can include a transmitter ( 210 ) that generates electromagnetic energy across the frequency band and forwards the electromagnetic energy to the antenna. An impedance measurement circuit ( 215 ) can be provided. The impedance measurement circuit can measure an input impedance of the antenna over the frequency band and generate measured impedance data ( 225 ). The system can include a material characterization application ( 230 ) that processes the measured impedance data to generate a material characterization for a structure ( 110 ) to which the antenna is proximate. The material characterization can include a dielectric constant, a permittivity, a loss tangent and/or a permeability.
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