[SOLVED] Substrate Relative dielectric constant (εr)

[joshua6143]

Hi,

Can anyone help me on this, cos i will be using Felt & Fleece fabric as substrate but i couldn't find the relative dielectric constant (εr) & thickness of the material. Does anyone know where can i find those specs????
TQ

josh

 

[keith1200rs]

There is quite a list here:

You need to know what the felt or fabric is made of, e.g. cotton, polyester etc. Even then, air gaps will cause errors.

Keith.

 

[joshua6143]

Hi Keith,

TQ for the information, i will checked it out for fabric material.