Novel designs for thermally robust coplanar crossing in QCA

In this paper, different circuit arrangementsof Quantum- dotCellularAutomata(QCA)areproposedforthe so-called coplanar crossing. These arrangements exploit the major- ity voting properties of QCA to allow a robust crossing of wires on the Cartesian plane. This is accomplished using enlarged lines and voting. Using a Bayesian Network (BN) based simulator, new results are provided to evaluate the robustness to so-called kink of these arrangements to ther- mal variations. The BN simulator provides fast and reli- able computation of the signal polarization versus normal- ized temperature. It is shown that by modifying the layout, a higher polarization level can be achieved in the routed sig- nal by utilizing the proposed QCA arrangements.