Dispersion characteristics of fundamental and higher order modes of cylindrical microstrip lines with a cover layer

✍ Scribed by Ching-Her Lee; Chung-I G. Hsu

• Publisher: John Wiley and Sons
• Year: 1997
• Tongue: English
• Weight: 207 KB
• Volume: 16
• Category: Article
• ISSN: 0895-2477
• DOI: 10.1002/(sici)1098-2760(19971220)16:6<385::aid-mop16>3.0.co;2-#

✦ Synopsis

The dispersion characteristics of the effecti¨e dielectric constant and the characteristic impedance of a superstrate-loaded cylindrical microstrip line are examined. Numerical results of fundamental and higher order modes are computed using a spectral-domain integral equation formulation in conjunction with the method of moments. Entire-domain sinusoidal functions are employed for microstrip current expansions to obtain con¨ergent results with relati¨ely few terms. The results show that the effects of the co¨er layer on the dispersion cur¨es for the narrower strip are more appreciable than for the wider strip.