jabidof
Member level 5
Antenna loss resistance
Hello everybody!
Here is a new topic about antenna. The input resistance of an antenna is divided into a radiating part and losses. Furthermore, the losses are composed of a dielectric part and a skin effect part. I found in the literature that the skin effect losses can be modeled using a so called HF resistance whose value is:
Rhf ≈ 1/(σ δ conductor_perimeter)
where σ is the conductivity of the material and δ the skin depth.
But for the dielectric loss, which is probably related to the tanδ of the material, i found no approximate formula. Does anybody know something about this subject?
BR,
JPC
Hello everybody!
Here is a new topic about antenna. The input resistance of an antenna is divided into a radiating part and losses. Furthermore, the losses are composed of a dielectric part and a skin effect part. I found in the literature that the skin effect losses can be modeled using a so called HF resistance whose value is:
Rhf ≈ 1/(σ δ conductor_perimeter)
where σ is the conductivity of the material and δ the skin depth.
But for the dielectric loss, which is probably related to the tanδ of the material, i found no approximate formula. Does anybody know something about this subject?
BR,
JPC