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2 years ago in Antenna & RF Design , Engineering By Renu
How is the total thickness of textile wearable antennas determined?
Textile antennas must be flexible, lightweight, and comfortable while maintaining acceptable electromagnetic performance. I want to understand how designers calculate the total thickness, including dielectric layers, conductive fabrics, and protective coatings, and how thickness affects bandwidth, efficiency, and bending performance.
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By Reno Answered 1 year ago
From my experience designing textile wearable antennas, I have seen that total thickness is determined by summing all functional layers, including the dielectric textile substrate, conductive elements (embroidered, stitched, or printed), and any protective coatings or encapsulation. I would recommend selecting the thinnest substrate that maintains structural integrity and desired permittivity, since thicker substrates increase bandwidth but reduce flexibility. Conductive layers should be as thin as possible to maintain conductivity without adding bulk. In practice, designers also account for mechanical compression and bending, which can slightly change effective thickness and affect resonant frequency. Iterative simulation combined with prototype measurements ensures that the total thickness balances electromagnetic performance, comfort, and durability in wearable applications.
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