A rapidly convergent iterative method for two-dimensional closed-body scattering problems

✍ Scribed by Robert J. Adams; Gary S. Brown

• Publisher: John Wiley and Sons
• Year: 1999
• Tongue: English
• Weight: 221 KB
• Volume: 20
• Category: Article
• ISSN: 0895-2477
• DOI: 10.1002/(sici)1098-2760(19990205)20:3<179::aid-mop9>3.0.co;2-5

✦ Synopsis

Figure 3 Comparison of the normalized phase velocity computed w x by using the new expression of and the expression in 1 with r, eff, p the measurements Figure 4 Comparison of the interaction impedance computed by w x using the new expression of and the expression in 1 with the r, eff, p measurements

An improvement of the theoretical values of the normalized phase velocity with respect to the measurement is evident in most of the frequency band. A more accurate computation of the interaction impedance is also obtained.

Conclusions

A new expression of the effective dielectric constant of the pth tube in the case of rectangular dielectric rods for use in the inhomogeneous dielectric loading approach is given. A comparison with the results obtained by using a previously published expression and the new experimental results demonstrates the improvement obtained using the presented expression in the simulation of normalized phase velocity and the interaction impedance for a helix slow-wave structure.

REFERENCES 1. P.K. Jain and B.N. Basu, The inhomogenous loading effects of practical dielectric supports for the helical slow wave structure of Ž .