Title :
High-speed coplanar transmission lines
Author :
Keil, Ulrich D. ; Dykaar, Douglas R. ; Levi, A.F.J. ; Kopf, Rose F. ; Pfeiffer, L.N. ; Darack, Sheldon B. ; West, K.W.
Author_Institution :
AT&T Bell Lab., Murray Hill, NJ, USA
fDate :
10/1/1992 12:00:00 AM
Abstract :
The authors present measurements of picosecond pulse propagation on coplanar strip transmission lines for which speed (i.e., group velocity), as well as phase and amplitude information are measured. Electrode effects are studied using transmission line loops 1 mm in diameter with cumulative propagation distances as long as 6 cm. The intrinsically low dielectric constant of coplanar-air transmission lines is shown to result in high signal speed and low attenuation. The authors use the data to verify the applicability of a model based largely on empirical formulae for radiation loss (geometry) and conductor absorption. The model is then used to identify optimal design criteria (for a given bandwidth) and is extended to the case of small dimensions
Keywords :
strip lines; transmission lines; 1 nm; 6 cm; amplitude information; conductor absorption; coplanar strip transmission lines; coplanar transmission lines; coplanar-air transmission lines; cumulative propagation distances; group velocity; high signal speed; intrinsically low dielectric constant; low attenuation; optimal design criteria; phase information measurement; picosecond pulse propagation; radiation loss; transmission line loops; Attenuation; Coplanar transmission lines; Dielectric constant; Dielectric measurements; Electrodes; Phase measurement; Pulse measurements; Strips; Transmission line measurements; Velocity measurement;
Journal_Title :
Quantum Electronics, IEEE Journal of
