Table 1 Resonance frequencies and retrieved real permittivity when the sensor is loaded with a lossy material having a dielectric constant of 2.

From: A Pixelated Microwave Near-Field Sensor for Precise Characterization of Dielectric Materials

Electric Loss Tangent

Resonance Frequency (GHz)

Retrieved Dielectric Constant

0

5.050

2.00

0.001

5.050

2.00

0.01

5.045

2.01

0.05

5.040

2.02