On the behavior of electromagnetic fields on the interfaces of chirostrip dipole antennas

✍ Scribed by Feliciano Lumini; J. C. da S. Lacava

• Publisher: John Wiley and Sons
• Year: 1999
• Tongue: English
• Weight: 176 KB
• Volume: 21
• Category: Article
• ISSN: 0895-2477
• DOI: 10.1002/(sici)1098-2760(19990605)21:5<384::aid-mop21>3.0.co;2-a

✦ Synopsis

Ž

. of layers, the following case is considered Fig. 4 : a plane Ž . wave f s 300 MHz and ␣ s illuminates a four-layer cylinder characterized by s 8.0, s 6.0, s 4.0, r1 r 2 r 3 s 2.0, a s 0.15 m, a s 0.20 m, a s 0.25 m, a s r4 1 2 3 4 0.30 m, and d s 0.10 m. The electric conductivities of the various layers s s s s Srm assume different 1 2 3 4

values, s 0.001, 0.002, 0.005, 0.01. For ª 0, the solutions w x become more and more similar to the one calculated in 4 for the lossless case. For these calculations, M s 6 and L s 1 or L s 3 have been considered.

Conclusions

In this letter, a series solution for the plane-wave scattering computation on the case of a multilayer dielectric elliptic cylinder with significant lossy characteristics has been evaluated in terms of the scattering cross section per unit length.

Ž Several numerical results including a comparison with exist-. ing data and check cases have been reported. The availability of a reliable series solution for a canonical object with one or more layers and lossy materials is, of course, of great interest, especially in testing numerical procedures for the solution of direct and inverse scattering problems.