My project is to design an antenna for wearable applications. Right now my substrate is PTFE (Teflon) but that is just plastic I think. I am looking for suggestions on the substrate. Can I use PTFE as a substrate for wearable applications or if I can have some suggestions on substrate material which is good for wearable applications.
Thank you
Hi,you know that properties of the PTFE are the high temp. handling (then higher power than plastic) and frequency response better than plastic,but working for di casting is more complicated than plastic
In most of the cases, different fabric materials substrate for wearable applications such as Silk, Aravind Cotton, Lenin, Raw Silk and Terry-Cotton are used. For wearable textile antennas utilizing substrates with a low dielectric constant, the surface wave losses are reduced, and impedance bandwidth is expanded. In general, textiles material has a very low dielectric constant that reduces the surface wave losses and increases the impedance bandwidth of the antenna. The wearable textile substrate material dielectric properties depend on the parameters of resonance frequencies, temperature, surface roughness and moisture content.
Thank you , I have one more question: where can I get correct information on dielectric constant of these materials like silk, Terry cotton, Lenin etc. I use CST.
Return to permittivity of material most of them around 2 you can test the value of permittivity essentially depending on capacitive value, ask PCV specialized to tell you about near one.
It can be used for the use in flexible conditions. But for wearable applications, use different textile substrate.
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