A New Method for Measuring the Properties of Dielectric Materials

This letter proposes a new method for determining the properties of dielectric materials. A dielectric sample in free space illuminated by an incident field from a nearby antenna produces a scattered field, which will affect the input impedance of the antenna. The change of the input impedance of the antenna can then be used to determine the permittivity and the loss of the dielectric sample. The measurement setup using a microstrip antenna has been examined in detail. Experimental results have been presented to demonstrate the feasibility and validity of the proposed method.

[1]  J. A. Jargon,et al.  Complex permittivity determination from propagation constant measurements , 1999 .

[2]  Langis Roy,et al.  Material characterization using a quasi-optical measurement system , 2002, Conference Digest Conference on Precision Electromagnetic Measurements.

[3]  J. Baker-Jarvis.  Transmission 1 Reflection and Short-circuit Line Permittivity Measurements , 2017 .

[4]  Wen Geyi.  Foundations of Applied Electrodynamics: Geyi/Foundations of Applied Electrodynamics , 2010 .

[5]  A. Hippel,et al.  Dielectric Materials and Applications , 1995 .

[6]  Jing Shenhui,et al.  Calibration-Independent and Position-Insensitive Transmission/Reflection Method for Permittivity Measurement With One Sample in Coaxial Line , 2011, IEEE Transactions on Electromagnetic Compatibility.

[7]  Y. Kobayashi,et al.  Microwave Measurement of Dielectric Properties of Low-Loss Materials by the Dielectric Rod Resonator Method , 1985 .

[8]  E. J. Vanzura,et al.  Improved technique for determining complex permittivity with the transmission/reflection method , 1990 .

[9]  V. Varadan,et al.  Free-space measurement of complex permittivity and complex permeability of magnetic materials at microwave frequencies , 1990 .

[10]  M. Raghavan,et al.  An overview of dielectric properties measuring techniques , 2005 .

[11]  B. W. Hakki,et al.  A Dielectric Resonator Method of Measuring Inductive Capacities in the Millimeter Range , 1960 .

[12]  Wen Geyi.  Foundations of Applied Electrodynamics , 2010 .

[13]  K. Limaye,et al.  Estimation of complex permittivity of arbitrary shape and size dielectric samples using cavity measurement technique at microwave frequencies , 2005, IEEE Transactions on Microwave Theory and Techniques.

[14]  W. Dou,et al.  Improvement of open resonator technique for dielectric measurement at millimetre wavelengths , 2009 .

[15]  E. M. Wareham,et al.  Technique of microwave measurements , 1956 .

[16]  D. Murthy,et al.  Complex permittivity measurements using cavity perturbation technique with substrate integrated waveguide cavities. , 2010, The Review of scientific instruments.

[17]  A Monorchio,et al.  Waveguide Dielectric Permittivity Measurement Technique Based on Resonant FSS Filters , 2011, IEEE Microwave and Wireless Components Letters.

[18]  R. Harrington.  Time-Harmonic Electromagnetic Fields , 1961 .