Authors: H.M.R. Suy, H.G.A. Huizing, P.G. Steeneken and O.I. Yanson
Affilation: NXP Semiconductors, Netherlands
Pages: 65 - 68
Keywords: MEMS switches, compact model, circuit model
In this paper, a new compact scalable circuit model for RF MEMS switches is presented. This new one-dimensional model combines the computational speed of one-dimensional models, with the accuracy of multi-dimensional models. The model includes a wide range of physical phenomena, such as squeeze film damping, contact, fringing electrostatic fields, and membrane bending. In addition, a parasitic network is developed that models the skin effect in the switch. The model is written in Verilog-A for easy implementation in any circuit simulator. The model is extensively numerically tested, and is validated on CV, transient, and S-parameter measurements. In contrast to earlier 1D models, a higher level of accuracy is achieved without the compromise of a loss of computational speed or ease-of-use in circuit simulators.