Search for dissertations about: "coaxial waveguide"
Showing result 1 - 5 of 14 swedish dissertations containing the words coaxial waveguide.
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1. Gap Waveguide Technology- Electromagnetic Packaging and Transitions
Abstract : The scarcity of available frequency bands for new wireless communication systems, as well as the growing need for higher capacity, motivates the current interest in moving upwards in frequency. The millimeter wave frequencyrange is very attractive to allocate potential commercial opportunities such as short range wireless communications that allow high-speed data/video transmission, and automotive radars for both driver assistance and increasedsafety. READ MORE
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2. Design, Processing, and Characterization of High Frequency Flip Chip Interconnects
Abstract : The demands for high frequency interconnect techniques for microwave integrated circuits (ICs) are growing with increasing operating frequencies of wireless communication systems. Interconnects have significant effect and impact on the overall system performance at high frequencies. READ MORE
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3. Modern numerical methods in electromagnetics applied to the design of reflector antennas and horn feeds
Abstract : .... READ MORE
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4. Topology optimization of antennas and waveguide transitions
Abstract : This thesis introduces a topology optimization approach to design, from scratch, efficient microwave devices, such as antennas and waveguide transitions. The design of these devices is formulated as a general optimization problem that aims to build the whole layout of the device in order to extremize a chosen objective function. READ MORE
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5. Baluns, Hybrids and Power Dividers for Ultra- Wideband Antennas
Abstract : UWB (ultra wideband), depending on the application requirement, is usually referred to 2:1 bandwidth for radio/wireless applications. Here in this thesis it is also used to denote extremely wideband antenna and components at several octave bandwidth, particularly for high frequency applications, such as the 1 – 10 GHz antenna system needed for the Square Kilometer Array (SKA) radio telescope and the 2 – 14 GHz antenna system for the VLBI2010 (Very Long Base line Interferometer) project. READ MORE