- Log In
Split Post Dielectric Resonator (SPDR)
SPDRs are intended for the measurements of the complex permittivity of laminar dielectric materials including LTCC substrates, but also thin ferroelectric films deposited on low loss dielectric substrates.
Single Post Dielectric Resonator (SiPDR)
TE01δ mode dielectric resonator technique is intended for very precise complex permittivity measurements of bulk low loss disc or cylinder shape dielectric ceramics.
Resonators for graphene measurements
Investigation of graphene properties has been a hot subject in the world's scientific community for the last couple of years. In October 2010, the interest in the subject was additionally fuelled by the Nobel Prize in Physics awarded jointly to Andre Geim and Konstantin Novoselov "for groundbreaking experiments regarding the two-dimensional material graphene".
Our expert, Prof. Jerzy Krupka, has developed resonators specifically designed for the measurements of electrical properties of graphene deposited on small 10 mm x 10 mm dielectric substrates at microwave frequencies (around 13 GHz). Such resonators are commercially available through QWED.
Fabry-Perot Open Resonator (FPOR)
A novel type of a Fabry-Perot Open Resonator (FPOR) with Gaussian mirrors is intended for automated broadband and precise resonant measurements of electromagnetic properties of low-loss dielectric sheets in the 20-110 GHz frequency range. The FPOR system is equipped with a specialized software controlling the measurement process and extracting complex permittivity of the material under test from the measured frequency and quality factor.
2D SPDR Scanner for Material Imaging
Efficient imaging of material samples with a portable 2D scanner incorporating a 10GHz Split-Post Dielectric Resonator and driven by a low-form-factor vector or scalar network analyser.
Standard reference materials
QWED offers standard reference materials for dielectric measurements. For example, samples of single crystal quartz can be ordered by interested customers, either in conjunction with a resonator purchase or independently. Samples of anisotropic substrates are also available.