Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 5 of 5 for “"substrate loss"”.
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Design and fabrication of an RF power LDMOSFET on SOI
… in RF power applications was the reduction of RF substrate loss due to the presence of the buried oxide. SOI was shown to reduce both drain substrate loss and pad substrate loss. Both contributed to an improvement in the device's power efficiency. An improvement of 5 percentage points of …
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Microelectromechanical Systems (Mems) for Radio Frequency Applications
… IC-compatible fabrication process, low loss, and wide tuning range. Second, a novel three-dimensional (3-D) microstructure assembly technique, Plastic Deformation Magnetic Assembly (PDMA), is developed, which is compatible with the standard IC fabrication process and capable of …
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Fabrication of Hollow Optical Waveguides on Planar Substrates
… hollow optical waveguides integrated on planar substrates. Similar in principle to Bragg waveguides and other photonic crystal waveguides, the antiresonant reflecting optical waveguide (ARROW) is used to guide light in hollow cores filled with liquids or gases. Waveguides with liquid or gas …
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Improved Polyhydroxyalkanoate Production from Selected Volatile Fatty Acids using Cupriavidus necator
… growth of bacteria. A feeding strategy of the substrate (VFAs – acetic acid and butyric acid) was developed to avoid inhibition by the substrate and the alkaline buffer. The results established that continuous feeding of VFAs based on maintaining optimum pH around 7 resulted in enhanced PHA …
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Efficient Finite Element Electromagnetic Analysis for High-Frequency/High-Speed Circuits And Multiconductor Transmission Lines
This dissertation comprises the following four components. (1) Development of a robust and efficient 3-D finite element electromagnetic field solver with high-order vector elements for high-frequency and high-speed circuit simulations. The solver supports wave port and lumped port excitations as …