Dispersion characteristics of microstrip transmission line on glass microwave IC's

Measurement of the effective dielectric constant of microstrip transmission line on glass for the frequency range of 5-35 GHz are presented. These measurements indicate that there is very little dispersion in 200-μm-thick glass for frequencies up to 35 GHz. Further, electromagnetic analysis shows that the dielectric constant of glass changes from 4.05 to 4.00 when the frequency varies from 5 to 35 GHz, somewhat compensating for the dispersion."