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Proceedings Paper

Investigation of tunable structures with liquid dielectrics for the microwave range
Author(s): Vitaliy G. Shevchenko; Vladimir N. Apletalin; Anatoliy T. Ponomarenko; Valerii Pavlovich Maltsev; Yuri N. Kazantsev
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Paper Abstract

Tunable electromagnetic wave absorbers for the microwave range comprise polymer-liquid composites, made up of structures of definite shape from low dielectric constant polymer dielectric, filled with polar liquids. Tuning of reflection coefficient is performed in several ways: filling or removal of liquid from the structure, changing composition or temperature of liquid, etc. Effective absorption of electromagnetic waves by these structures in a wide range of frequencies is realized in case frequency dependence of dielectric constant of the liquid is such that for the whole range the condition of resonance absorption is fulfilled. The advantages of polar liquid dielectrics as absorbing media are demonstrated. Absorbing properties of structures with polar liquids and solutions of different salts are compared. Reflection coefficients for several structures of `dielectric on metal' type were measured.

Paper Details

Date Published: 20 May 1996
PDF: 8 pages
Proc. SPIE 2722, Smart Structures and Materials 1996: Smart Electronics and MEMS, (20 May 1996); doi: 10.1117/12.240446
Show Author Affiliations
Vitaliy G. Shevchenko, Institute of Synthetic Polymeric Materials (Russia)
Vladimir N. Apletalin, Institute of Radio Engineering and Electronics (Russia)
Anatoliy T. Ponomarenko, Institute of Synthetic Polymeric Materials (Russia)
Valerii Pavlovich Maltsev, Institute of Radio Engineering and Electronics (Russia)
Yuri N. Kazantsev, Institute of Radio Engineering and Electronics (Russia)


Published in SPIE Proceedings Vol. 2722:
Smart Structures and Materials 1996: Smart Electronics and MEMS
Vijay K. Varadan; Paul J. McWhorter, Editor(s)

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