Naslov
Surface Impedance Characterization for UTD Based Solution with IBC for Surface Fields on a Dielectric-Coated PEC Circular Cylinder

Autori
Garcia-Aguilar, Andres ; Šipuš, Zvonimir ; Sierra-Perez, Manuel

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
6th European Conference on Antennas and Propagation (EUCAP), 2012. / - , 2012, 163-167

ISBN
978-1-4577-0919-7

Skup
6th European Conference on Antennas and Propagation (EUCAP), 2012.

Mjesto i datum
Prag, Češka Republika, 26.03.2012. - 30.03.2012

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
conformal array antennas; hybrid electromagnetic methods; Green’s function; uniform theory of diffraction (UTD); surface impedance

Sažetak
A novel formulation for the surface impedance characterization is introduced for the canonical problem of surface fields on a perfect electric conductor (PEC) circular cylinder with a dielectric coating due to a electric current source using the Uniform Theory of Diffraction (UTD) with an Impedance Boundary Condition (IBC). The approach is based on a TE/TM assumption of the surface fields in the original problem. Where this surface impedance fails, an optimization is performed to minimize the error in the SD Green’s function between the original problem and the equivalent one with the IBC. This new approach requires small changes in the available UTD based solution with IBC to include the geodesic ray angle and length dependence in the surface impedance formulas. This asymptotic method, accurate for large separations between source and observer points, in combination with spectral domain (SD) Green’s functions for multidielectric coatings leads to a new hybrid SD-UTD with IBC to calculate mutual coupling among microstrip patches on a multilayer dielectric-coated PEC circular cylinder. Results are compared with the eigenfunction solution in SD, where a very good agreement is met.

Izvorni jezik
Engleski

Znanstvena područja
Elektrotehnika

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