Search for dissertations about: "antenna characterization"
Showing result 1 - 5 of 53 swedish dissertations containing the words antenna characterization.
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1. Characterization of artificially soft surfaces and their applications in antenna design
Abstract : .... READ MORE
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2. Embedded Element Patterns in Combination with Circuit Simulations for Multi-Port Antenna Analysis
Abstract : This thesis is a result from work on two different subjects, electromagnetic simulations of reverberation chambers and a methodology for the analysis of multi-port antennas. The subjects can be linked together by their contribution to knowledge in electromagnetic simulations and characterization of antennas. READ MORE
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3. Characterization and Design Requirements for Antennas in the Near-field and the Random-LOS Propagation Environment
Abstract : The choice of antenna for a particular application depends on the requirements imposed by that application. These can be, the application's field region (i.e., near-field or far-field), polarization, radiation pattern, radiation efficiency, system throughput, etc. READ MORE
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4. Design, Characterization, and Calibration of Low-Noise Terahertz Receivers
Abstract : This thesis is focused on the field of instrumentation for radio-astronomy and atmospheric science, and specifically deals with problems such as optical design and its verification, horn antennas and receiver optics’ components, different aspects of measurement systems in order to characterize low-noise THz receivers, and its calibration techniques.Ultra low-noise Terahertz receivers, used in radio-astronomy, are typically coupled to the telescope system through relay optics that provides guiding of the signal to the receiver frontend with minimal loss. READ MORE
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5. Modeling and Compensation of Nonlinear Distortion in Multi-Antenna RF Transmitters
Abstract : Multi-antenna systems are utilized as a way to increase spectral efficiency in wireless communications. In a transmitter, the use of several parallel transmit paths and antennas increases system complexity and cost. Cost-efficient solutions, which employ active antenna arrays and avoid expensive isolators, are therefore preferred. READ MORE