Dielectric Constant? of polymers at High Freq,
Dielectric Constant? of polymers at High Freq,
(OP)
Does anybody know where I might find either charts or data on commonly used polymers in the electronics industry? For example most data sheets only show information to 10 GHz or so. I am looking for data on Ultem, Kel-F, and the like at frequencies 30 GHz to 65 GHz. Can someone please help me!





RE: Dielectric Constant? of polymers at High Freq,
I think the 30GHz to 65GHz region you are interested in is too new to be well documented. I also think that standard equipment will not be available at manufacturers to measure the properties. I am sure the manufacturers would measure it for you if it were easy.
I would phone the manufacturers/distributers and talk with them about the problem.
I doubt that many laboratories exist that can do such work at 65GHz.
RE: Dielectric Constant? of polymers at High Freq,
You'll probably have to measure them on your own with one of the various resonator techniques (cube, printed circuit, flat sheet). Rogers uses the flat sheet resonance technique.
For information on a large quantity of materials at lower frequencies, I purchased "Dielectric Materials and Applications" by Arthur Von Hippel, from Artech house. It's very old, 1954 vintage but last release date was 1995.
They tested alot of materials up to 10 ghz, and a few to 25 ghz.
kch
(antennas)
RE: Dielectric Constant? of polymers at High Freq,
RE: Dielectric Constant? of polymers at High Freq,
Try the other forums to see if anyone has used this material. Antennas and Propagation and the Microwave forums are more likely to have someone who designs higher frequency components.
kch