A narrow transverse slit in the signal strip of a conventional CPW is chara
cterised using the experimental resonance frequency. It is shown that both
the resonance frequency and the bandwidth decrease as functions of the slit
depth. Furthermore, the equivalent series inductance for the slit in a CPW
is calculated by changing the inductance relation of the slit in the micro
strip. The resonance frequencies calculated by means of this relation are i
n excellent agreement with the measured resonance frequencies.