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

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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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Journal: TechConnect Briefs
Volume: 3, Nanotechnology 2008: Microsystems, Photonics, Sensors, Fluidics, Modeling, and Simulation – Technical Proceedings of the 2008 NSTI Nanotechnology Conference and Trade Show, Volume 3
Published: June 1, 2008
Pages: 513 - 516
Industry sectors: Advanced Materials & Manufacturing | Sensors, MEMS, Electronics
Topic: Informatics, Modeling & Simulation
ISBN: 978-1-4200-8505-1