Measurement Results
Key Point!
- A Fabry-Perot resonator is ideal for measuring low-loss materials in the D-band.
- Highly stable measurements, with less than 0.5% variation across measurement frequencies.
- Frequency dependence differs by material, making evaluation at the actual operating frequency essential.
A variety of polymer films were measured in the D-band (110-170 GHz), a frequency range receiving attention for 6G applications. Dielectric loss (Df) in particular shows distinct frequency dependence for different polymers, demonstrating the importance of evaluating each material at the frequency where it will be used.
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System Configuration
- Fabry-Perot resonator, D-band, FP-D (EM labs)
- Permittivity measurement software for Fabry-Perot resonators, FP-MA (EM labs)
- Vector network analyzer: N5290A (Keysight Technologies)
- Mini VNAX frequency extender module: N5262BW06 (Keysight Technologies)
Measured Samples
- PTFE, 200 um
- COP, 187 um
- PP, 38 um
- MPI, 50 um
- LCP, 48 um
- PC, 200 um
- Kapton, 78 um