Effect of enhanced current crowding in a CPW with a thin ferroelectric film
Artikel i vetenskaplig tidskrift, 1997

Enhanced current crowding is predicted at the edges of the conducting strips in thin ferroelectric film coplanar waveguides (CPWs). A minimum current crowding depth is expected, which depends on the CPW geometry and dielectric constant of the ferroelectric film. In practical CPW devices the enhanced current crowding can increase the conductor losses by up to four times. The current crowding depth may be smaller than the skin depth or London penetration depth (for high temperature superconducting CPW)

coplanar waveguides current distribution electric fields ferroelectric thin films losses microwave devices permittivity waveguide theory


Erik F. Carlsson

Institutionen för mikrovågsteknik

Spartak Gevorgian

Institutionen för mikroelektronik och nanovetenskap

Electronics Letters

0013-5194 (ISSN) 1350-911X (eISSN)

Vol. 33 145-146


Elektroteknik och elektronik