Search for dissertations about: "trench"

Showing result 1 - 5 of 21 swedish dissertations containing the word trench.

  2. 1. On the Modelling of Train Induced Ground Vibrations with Analytical Methods

    Author : Anders Karlström; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; ground vibrations; train; wave propagation; dynamic flexibility; trench; railway track; vibration isolation; wave barrier; soil-structure interaction;

    Abstract : A novel analytical approach to model train induced ground vibrations is proposed. Integral transform solutions are combined with series solutions to obtain fast numericalalgorithms, where a particular designed boundary condition for finite regions is seen to enable the solution procedure. READ MORE

  4. 2. Chemical Mechanical Polishing of Silicon and Silicon Dioxide in Front End Processing

    Author : Markus Forsberg; Jörgen Olsson; Jyrki Molarius; Uppsala universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Electronics; chemical mechanical polishing; chemical mechanical planarization; silicon; silicon dioxide; front end; shallow trench isolation; deep trench isolation; bipolar transistor; BiCMOS; wafer bonding; Elektronik; Electronics; Elektronik;

    Abstract : Chemical mechanical polishing (CMP) has been used for a long time in the manufacturing of prime silicon wafers for the IC industry. Lately, other substrates, such as silicon-on-insulator has become in use which requires a greater control of the silicon CMP process. READ MORE

  5. 3. Vertical High-Voltage Transistors on Thick Silicon-on-Insulator

    Author : Ulrich Heinle; Gehan Amaratunga; Uppsala universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Electronics; SOI; vertical DMOS; trench isolation; power electronics; integration; on-resistance; capacitive coupling; self-heating; switching; Elektronik; Electronics; Elektronik; Elektronik; Electronics;

    Abstract : More and more electronic products, like battery chargers and power supplies, as well as applications in telecommunications and automotive electronics are based on System-on-Chip solutions, where signal processing and power devices are integrated on the same chip. The integration of different functional units offers many advantages in terms of reliability, reduced power consumption, weight and space reduction, leading to products with better performance at a hopefully lower price. READ MORE

  6. 4. Reduction in ground vibrations by the use of wave obstacles

    Author : Peter Persson; Byggnadsmekanik; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Abstract : The increasing size of the population results in that unbuilt spaces needing to be used for the construction of new facilities. Large construction sites can generate disturbing vibrations to nearby buildings, both while construction is underway and afterwards through the operation of subways, for example. READ MORE

  7. 5. Modelling of High Power SOI Vertical DMOS Transistors and Flip-chip Packages

    Author : Kuntjoro Pinardi; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Conductive Adhesive; self-heating; Unclamped Inductive Switching; ACA; vertical DMOS; integration; Flip-chip; UIS; SOI;

    Abstract : Part I: Vertical DMOS Transistors System level integration is a major trend in the electronic industry at the moment. For automotive applications in particular it is desirable to integrate CMOS logic circuits and different types of power devices. READ MORE