Search for dissertations about: "permittivity"

Showing result 1 - 5 of 89 swedish dissertations containing the word permittivity.

  2. 1. Microwave Measurement Systems for In-line 3D Monitoring of Pharmaceutical Processes

    Author : Livia Cerullo; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; permittivity; moisture content; microcrystalline cellulose; Pharmaceutical processes; dispersive media; finite element method; microwave measurements;

    Abstract : The monitoring and understanding of pharmaceutical processes are important in order to achieve high-quality products at a low-production cost. The presence of water, e.g. as moisture content in the solid-state pharmaceutical material, is ofparticular interest and importance. READ MORE

  4. 2. Microwave Measurement Systems for Parameter Estimation and Classification

    Author : JOHAN WINGES; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; microcrystalline cellulose; parameter estimation; sensitivities; microwave measurements; finite element method; gradient-based optimization; permittivity;

    Abstract : Microwave measurement systems are attractive for diagnostics and monitoring purposes in a number of important applications. For example, the strong interaction between microwaves and water make microwaves well-suited for moisture measurements. READ MORE

  5. 3. High frequency electronic packaging and components : characterization, simulation, materials and processing

    Author : Christian Johansson; Mats Robertsson; Li-Rong Zheng; Linköpings universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Dielectric loss; high frequency electrical characterization; microwave circuits; multilayer thin film technology; ORMOCER®; permittivity; printed diode; sequential build-up; silicone elastomer; Signal processing; Signalbehandling;

    Abstract : Electronic packaging continues to move towards improved performance and lower cost. Requirements of higher performance, reduced size, weight and cost of both high density interconnects and high frequency devices have led to the search for new materials, material combinations, methods, processes and production equipment. READ MORE

  6. 4. Optical interconnects and high frequency electronic packaging : SBU-materials, material characterization, LAP- & microprocessing

    Author : Steffen Uhlig; Linköpings universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; optical interconnects; overview opto coupling components; overview planar waveguide amplifiers; large area panel processing; polymer waveguides; multilayer thin film technology; ORMOCER®; sequential build up; permittivity; dielectric loss;

    Abstract : The main objective of this thesis is to discuss and demonstrate optical interconnect technologies. These can be used to enhance the data throughput capacity of future printed circuit boards and backplanes, i.e. exchange Copper conductors with light conductors. READ MORE

  7. 5. Microwave-Assisted Air-Dehydration of Fruits and Vegetables Processing Conditions and Product Quality

    Author : Tomas Funebo; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; dielectric properties; pre-treatment; dehydration; permittivity; microwave; fruits; vegetables; multimode;

    Abstract : This thesis is focused on aspects of microwave-assisted hot-air drying of fruits and vegetables. The two material coefficients, the relative permittivity (ε) and the loss factor (ε), determine the interaction of microwave energy with foods. READ MORE