Right-Angled Coplanar Waveguide Using Short-Circuited Slotline

In this article, a right-angled coplanar waveguide using the short-circuited slotline is proposed to eliminate the coplanar waveguide mode to coupled slotline mode conversion suffered by the conventional right-angled coplanar waveguide. As compared with the simulation and measurement results of the conventional right-angled coplanar waveguide, the reflection coefficient is greatly reduced from -2.44 to -9.52 dB, whereas the transmission coefficient is greatly increased from -16.07 to -4.49 dB. Besides, the peak-to-peak noise of the time-domain reflection is reduced from 0.033 to 0.027 V, whereas the peak-to-peak noise of the time-domain transmission is reduced from 0.040 to 0.029 V. Furthermore, the electric fields of the inner and outer slots of the coplanar waveguide are now made equal phase throughout the right-angled bend. As a result, the power loss is reduced from 60% to 55% and the signal integrity is improved.