Nano Science and Technology Institute
Nanotech 2008 Vol. 3
Nanotech 2008 Vol. 3
Nanotechnology 2008: Microsystems, Photonics, Sensors, Fluidics, Modeling, and Simulation - Technical Proceedings of the 2008 NSTI Nanotechnology Conference and Trade Show, Volume 3
Chapter 5: Modeling & Simulation of Microsystems

Bulk-Titanium Waveguide – a New Building Block for Microwave Planar Circuits

Authors:X.T. Huang, S. Todd, C. Ding, N.C. MacDonald
Affilation:University of California at Santa Barbara, US
Pages:513 - 516
Keywords:titanium, MEMS, waveguide, RF MEMS
Abstract:We present a new topology for planar microwave transmission line: bulk titanium waveguide. The waveguide is formed by deep trench etching, dielectric gap filling, and planarization. The high aspect ratio of the resulting structure provide superior field confinement, low crosstalk, therefore a small footprint. We have successfully demonstrated waveguides with propagation loss of 0.7dB/mm at 40GHz. To enable bulk titanium as a substrate compatible with microfabrication, we developed a suite of techniques that overcome unique manufacturing issues associated with titanium.
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