[Publising House of Electron. Ind 1999 International Conference on Computational Electromagnetics and its Applications. ICCEA'99 - Beijing, China (1-4 Nov. 1999)] 1999 International Conference on Computational Electromagnetics and its Applications. Proceedings (ICCEA'99) (IEEE Cat. No.99EX374) - The dispersion characteristic of broadside-coupled coplanar waveguide in wide frequency band