Search for dissertations about: "compact antenna"
Showing result 11 - 15 of 40 swedish dissertations containing the words compact antenna.
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11. Multiport Antenna Systems for Space-Time Wireless Communications
Abstract : Multiport antenna systems are indispensable part of modern wireless communication systems. Their crucial impact on the overall performance requires sufficient regard and dedication to a precise design and characterisation. This concern has been to a considerable extent addressed in the frame of the current thesis. READ MORE
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12. Characterization and Enhancement of Antenna System Performance in Compact MIMO Terminals
Abstract : Co-band multiple-antenna implementation in compact user terminals is necessary for harvesting the full potential of diversity and multiple-input multiple-output (MIMO) technology in cellular communication systems. The recent worldwide deployment of Long Term Evolution (LTE), which requires the use of MIMO technology in the downlink, adds to the urgency of achieving both practical and optimal multiple-antenna systems in user terminals. READ MORE
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13. Design and Optimization of Wideband Hat-Fed Reflector Antenna with Radome for Satellite Earth Station
Abstract : This thesis presents the development of a hat-fed refector antenna with radome to be used as satellite earth station. The antenna with self supported feed is relatively compact, circular symmetric and with low cross polarization. To achieve optimum performance over the satellite Ku-band,covering 10.75-14. READ MORE
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14. Microwave and Millimeter-Wave Monolithic Integrated Circuits in CMOS and GaAs-mHEMT Technologies
Abstract : The objective of this work has been to design and characterize microwave and millimeter-wave components and circuits within a 90 nm Si-CMOS process and a 100 nm GaAs-mHEMT process. The work is divided in two parts depending on the technology. READ MORE
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15. Millimeter-Wave High-Gain Antenna for 5G Backhauling with Auto-beam-tracking Function
Abstract : As microwave links are increasingly deployed within the millimeter-wave frequency range, E-band (70/80 GHz) links have been installed on a global scale. One major technological challenge in this high-frequency spectrum is the significant increase in path loss between receivers and transmitters. READ MORE