Open-Ended Coaxial Dielectric Probe Effective Penetration Depth Determination
We have performed a series of experiments which demonstrate the effect of open-ended coaxial diameter on the depth of penetration. We used a two layer configuration of a liquid and movable cylindrical piece of either Teflon or acrylic. The technique accurately demonstrates the depth in a sample for...
| Veröffentlicht in: | IEEE transactions on microwave theory and techniques. - 1998. - 64(2016), 3 vom: 01. März, Seite 915-923 |
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| Format: | Aufsatz |
| Sprache: | English |
| Veröffentlicht: |
2016
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| Zugriff auf das übergeordnete Werk: | IEEE transactions on microwave theory and techniques |
| Schlagworte: | Journal Article Dielectric open-ended coaxial probe penetration depth probe diameter tissue properties |
| Zusammenfassung: | We have performed a series of experiments which demonstrate the effect of open-ended coaxial diameter on the depth of penetration. We used a two layer configuration of a liquid and movable cylindrical piece of either Teflon or acrylic. The technique accurately demonstrates the depth in a sample for which a given probe diameter provides a reasonable measure of the bulk dielectric properties for a heterogeneous volume. In addition we have developed a technique for determining the effective depth for a given probe diameter size. Using a set of simulations mimicking four 50 Ω coaxial cable diameters, we demonstrate that the penetration depth in both water and saline has a clear dependence on probe diameter but is remarkably uniform over frequency and with respect to the intervening liquid permittivity. Two different 50 Ω commercial probes were similarly tested and confirm these observations. This result has significant implications to a range of dielectric measurements, most notably in the area of tissue property studies |
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| Beschreibung: | Date Revised 21.03.2022 published: Print-Electronic Citation Status PubMed-not-MEDLINE |
| ISSN: | 0018-9480 |