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A modified calibration method for complex permittivity measurement
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10.1063/1.4817635
/content/aip/journal/rsi/84/8/10.1063/1.4817635
http://aip.metastore.ingenta.com/content/aip/journal/rsi/84/8/10.1063/1.4817635
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Schematics of the calibration process for the conventional and modified cavity perturbation theories. In comparison with the conventional theory, the modified (this) method employs two known samples to calibrate.

Image of FIG. 2.
FIG. 2.

Resonant frequencies versus sample's relative dielectric constant for two calibration conditions: (a) same volume but different dielectric properties and (b) same dielectric property but different volumes. The resonant frequency obtained by HFSS is considered as a standard. The other two curves are calculated using the conventional method (Eq. (1) ) and modified method (Eq. (8) ).

Image of FIG. 3.
FIG. 3.

Schematics of experimental setup: (a) heating system (high-power operation) and (b) dielectric measurement system (low-power operation). The temperature was measured with a calibrated infrared thermometer.

Image of FIG. 4.
FIG. 4.

(a) Resonant frequency and (b) quality factor versus sample temperature. The sample was heated to 600 °C and allowed it cool down naturally by turning off the microwave power. These data were taken in the cool-down process.

Image of FIG. 5.
FIG. 5.

Temperature response for normalized (a) relative dielectric constant (  /  ) and (b) loss tangent (tan δ / tan δ) using conventional and modified methods. Red dashed lines with dots are obtained using modified method (Eq. (8) ). Dashed lines with triangles are measured using conventional cavity perturbation method (Eq. (1) ).

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/content/aip/journal/rsi/84/8/10.1063/1.4817635
2013-08-13
2014-04-18
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: A modified calibration method for complex permittivity measurement
http://aip.metastore.ingenta.com/content/aip/journal/rsi/84/8/10.1063/1.4817635
10.1063/1.4817635
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