A permittivity characterization method by detuned ring-resonators for bulk materials up to 110 GHz

Start Page
124
End Page
127
Article Number
6986385
Citation
European Microwave Conference: 6986385 (2014)
Contribution to Conference
European Microwave Week 2014: Connecting the Future, EuMW 2014 , EuMC 2014 
Publisher DOI
10.1109/EuMC.2014.6986385
An accurate characterization of microwave materials is essential for reliable high frequency circuit design. This paper presents a measurement setup, which enables a quick and accurate determination of the relative permittivity of dielectric bulk materials up to 110 GHz. A ring-resonator is manufactured on a well characterized substrate dealing as reference resonator. The Material Under Test (MUT) is placed on top of the ring, which increases the effective permittivity and therefore introduces a shift of the resonance frequency of the resonator. Electromagnetic field simulations with different heights and relative permittivities of the MUT provide a lookup table for the measured resonance frequencies. The functionality of the proposed measurement setup is validated by measurement results of different MUTs.
Schlagworte
Bulk material
Detuned resonator
Frequency shift
Material characterization
Permittivity
Ring-resonator