Capacitive pressure sensors have undergone a multitude of design modifications to improve their performance for various applications. This paper aims to add a novel feature to increase the capacitance generated by using a convex dome-shaped substrate electrode. The paper provides in-depth mathematical and analytical modeling that supports the proposed design. The results indicate a significant improvement in capacitance, touch-mode range, and linearity for the touch-mode capacitive pressure sensor. © 2018, Springer Science+Business Media, LLC, part of Springer Nature.