Search for dissertations about: "dipole antennas"
Showing result 1 - 5 of 25 swedish dissertations containing the words dipole antennas.
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1. Integrated Antennas : Monolithic and Hybrid Approaches
Abstract : This thesis considers integration of antennas and active electronics manufactured on the same substrate. The main topic is on-chip antennas for commercial silicon processes, but hybrid integration using printed circuit board technology is also addressed. READ MORE
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2. Wideband Active and Passive Antenna Solutions for Handheld Terminals
Abstract : This thesis presents solutions and studies related to the design of wideband antennas for wireless handheld terminal applications. A method of electrically shortening the terminal chassis length to obtain resonance at high frequencies has been proposed and evaluated, thereby increasing the antennas impedance bandwidth. READ MORE
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3. Photonic terahertz-wave generation, radiation and quasioptical integration
Abstract : This thesis deals with the uni-travelling-carrier photodiode (UTC-PD) based photonic generation of terahertz waves, antenna designs for the terahertz radiation and a novelcatadioptric lens for quasioptical integration.The ongoing and accomplished research work on the UTC-PD, its limitations and optimisation scopes for attaining higher bandwidth and higher output power have been discussed. READ MORE
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4. Integrated Antenna Solutions for Wireless Sensor and Millimeter-Wave Systems
Abstract : This thesis presents various integrated antenna solutions for different types of systems and applications, e.g. wireless sensors, broadband handsets, advanced base stations, MEMS-based reconfigurable front-ends, automotive anti-collision radars, and large area electronics. READ MORE
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5. Analysis of Dipole and Patch Antennas in Cylindrical Structures
Abstract : This thesis deals with the analysis of dipoles, patches, and aperture coupled patches located in an infinitely long cylindrical structure with arbitrary cross-section. The analysis exploits the two-dimensional nature of the structure by expanding all fields and currents in spatial harmonics along the cylinder axis, and solving the subsequent spectral two-dimensional problems by the moment method. READ MORE