Affiliations: [a] Department of Electrical Engineering, University of
Padova, Padova, Italy
Correspondence:
[*]
Corresponding author: Daniele Desideri, Department of Electrical
Engineering, University of Padova, via Gradenigo 6/a, I-35131, Padova, Italy.
Tel.: +39 049 827 7566; +39 049 827 7535; Fax: +39 049 827 7599; E-mail:
[email protected]
Abstract: A new version of coaxial transmission line sample holder with
continuous conductor for measurement of shielding effectiveness of planar films
has been developed. The inner conductor of the sample holder is divided in two
parts; at one end of the two parts an internal and an external straight thread
respectively have been realized. The connection of the inner conductor is done
by screwing the two parts, pressing the film and its substrate between two flat
annular surfaces. The contact is simple, reliable and effective. Contact
resistance value of the order of milliohm has been obtained with a copper film
deposited on PEEK substrate. With the deposited copper film, shielding
effectiveness measurements in the frequency range 10 kHz–300 MHz have
been done and are reported.
