According to W.J.Getsinger [56] a coplanar series gap (see fig. 12.5) is supposed to be the dual problem of the inductance of a connecting strip between twin strip lines.
The inductance of such a thin strip with a width and the length
is given to a good approximation by
![]() |
(12.32) |
where and
. Substituting this inductance
by its equivalent capacitance of the gap in CPW yields
![]() |
(12.33) |