Waveguide Dielectric Permittivity Measurement Technique Based on Resonant FSS Filters

作者：Costa Filippo^*; Amabile Claudio; Monorchio Agostino; Prati Enrico

来源：IEEE Microwave and Wireless Components Letters, 2011, 21(5): 273-275.

DOI：10.1109/LMWC.2011.2122303

• Frequency selective surfaces (FSSs)
• resonant dielectric measurement technique
• waveguide filter

A method to determine the dielectric permittivity of materials is presented. Such a method exploits the use of a low-cost frequency selective structure (FSS), transversally placed in a waveguide in the proximity of the sample under test. The presence of the additional dielectric placed close to the FSS leads to a shift of bandpass and bandstop resonance frequencies. The relationship between the frequency shift and the permittivity of the dielectric under test allows the determination of the unknown permittivity. Such a procedure is particularly suitable for measuring the dielectric permittivity of thin slabs.

• 出版日期2011-5