|
|
A quasi-optical Free-Space Method for Dielectric Constant Characterisation of Polymer Materials in the mm-wave band Host Publication: Finds and Results from the Swedish Cyprus Expedition: A Gender Perspective at the Medelhavsmuseet Authors: A. Elhawil, L. Zhang, J. Stiens, C. De Tandt, G. Van Assche, A. Alexander and R. Vounckx Publisher: IEEE Publication Date: Dec. 2007 Number of Pages: 4
Abstract: Abstract: Polymers attract more and more attention as low loss dielectric materials in RF and millimeter wave field, because of their interest properties at high frequencies. In this work, we report a Quasi-Optical free-space method to derive W-band dielectric constant of some common-used polymers including Polymethylmethacrylate, polyvinylchloride, Nylon66, Mylar, polytetra-fluorethylene, polypropylene, high and low density polyethylene, kapton and polyethersulfone. Free-space transmission/ reflection coefficients of the aforementioned materials are measured with a millimeter wave network analyzer. Genetic algorithm (GA) is employed to compute the complex dielectric constant. The results are compared with those in other previously published works.
|
|
