A comparison of solid, mesh, and segmented broad dipoles in biological environments

Solid and mesh broad dipole antennas (30 mm half-length at 2 GHz) show similar S 11 and bandwidth in air, but the current is distributed differently. Further, when the mesh dipole is placed onto a conductive material (pork loin), the current distribution moves from edges toward the center, changing...

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Bibliographic Details
Published in2017 USNC-URSI Radio Science Meeting (Joint with AP-S Symposium) pp. 53 - 54
Main Authors Hall, Kaitlin, Chrysler, Andrew, Furse, Cynthia
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.07.2017
Subjects
Bandwidth
Biology
Copper
Current distribution
Dipole antennas
Implantable Antennas
Mesh Dipoles
Resonant frequency
Segmented Dipoles
Solids
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Summary:Solid and mesh broad dipole antennas (30 mm half-length at 2 GHz) show similar S 11 and bandwidth in air, but the current is distributed differently. Further, when the mesh dipole is placed onto a conductive material (pork loin), the current distribution moves from edges toward the center, changing the overall performance of the antenna. Low conductivity, segmented dipoles are also presented showing an increase in resonant frequency from 3.4 GHz to 4.0 GHz as the segment gap increases from 0.1 mm to 0.3 mm. The segmentation also increases the bandwidth from 19% to 25%. The segmented dipole is placed onto conductive pork loin and resonant frequency decreases from 1.7 GHz to 1.1 GHz as the gap decreases from 0.3 mm to 0.1 mm.
DOI:10.1109/USNC-URSI.2017.8074893