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Microwave Characterization Of Electro-Optic Polymers

Published online by Cambridge University Press:  11 February 2011

Guru Subramanyam ,
Prasanna Mathala ,
Christine Chevalier ,
Antonio Davis ,
Perry Yaney  and
James Grote
Guru Subramanyam
Affiliation:
Department of Electrical &Computer Engg., University of Dayton, Dayton, OH 45469
Prasanna Mathala
Affiliation:
Department of Electrical &Computer Engg., University of Dayton, Dayton, OH 45469
Christine Chevalier
Affiliation:
Analex Corp., NASA Glenn Research Center, 21000 Brookpark Road, Cleveland, OH 44135
Antonio Davis
Affiliation:
Electro-Optics Graduate Program, University of Dayton, Dayton, OH 45469
Perry Yaney
Affiliation:
Electro-Optics and Department of Physics, University of Dayton, Dayton, OH 45469
James Grote
Affiliation:
AFRL MLPS, Materials and Manufacturing Directorate, WPAFB, Dayton, OH 45432
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Abstract

Electro-optic polymer thin-films were characterized at microwave frequencies, for possible applications in GHz modulators. Single layers of the polymers were spin coated on low loss magnesium oxide substrates for characterizing the polymers at microwave frequencies. Coplanar waveguide test structures were designed for evaluation of the relative dielectric permittivity as well as the loss-tangent of the polymers at microwave frequencies. A conformal mapping technique was used for the extraction of relative dielectric constant of the polymer films based on the microwave scattering parameter measurements. As an example, a DR1-PMMA polymer had a relative dielectric permittivity of 3.01 and a loss-tangent of 0.075 at 8 GHz. The design of the test structures, the procedure for the accurate determination of the dielectric permittivity and the loss-tangent of the polymer films are discussed in this paper.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 734: Symposia A/B – Defect-Mediated Phenomena in Ordered Polymers – Polymer/Metal Interfaces and Defect Mediated Phenomena in Ordered Polymers , 2002 , B9.15
Copyright
Copyright © Materials Research Society 2003

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References

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