Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 9 of 9 for “"antenna measurement"”.
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Novel measurement system based on electromagnetic sensors on board unmanned aerial vehicles for subsurface imaging and antenna measurement applications
… (ENGLISH): This thesis presents two novel measurement systems based on mounting electromagnetic sensors working at microwave frequencies on board Unmanned Aerial Vehicles (UAVs). The ability of inspecting difficult-to-access areas without interacting with the environment is one of the …
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Contribution to the uncertainty evaluation in the measurement of the main antenna parameters = Contribución a la evaluación de la incertidumbre en la medida de los principales parámetros de antena
… polarization techniques and swept-frequency measurements, indirect measurements of antenna characteristics and automated test systems. The accurate determination of a physical quantity or performance by measurements is a challenging task. For microwave antennas there are some established …
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Characteristics of the Fields in the Near and Far Zone Of Antennas and Its Significance in Wireless Communication
… characterization of the fields radiated from antennas in wireless communication scenario has been mostly overlooked by communication society. The definition and application of Near-Field and Far-field has mostly been considered from the antenna measurement community. To date no critical study …
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Retrieval of Free Space Radiation Patterns through Measured Data in a Non-Anechoic Environment
<p>Antenna pattern measurements are usually carried out in an anechoic chamber. However, a good anechoic chamber is very expensive to construct. Previous research has attempted to compensate for the effects of extraneous fields measured in a non-anechoic environment to obtain a free space pattern …
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Design and Verification of a LabVIEW Automated Antenna Radiation Pattern Measurement System
… to advance student education in the areas of antennas and wireless communications. An anechoic chamber is a room designed to suppress electromagnetic radiation reflections so that accurate measurement of radio frequency (RF) systems such as wireless radios and antennas can take place. Despite …
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ANALYSIS AND DESIGN OF BROADBAND AND DUAL BAND MICROSTRIP ANTENNAS
The concept of using microstrip antennas to provide printed radiating structures, which are electrically thin, lightweight, and low cost, is a relatively new and exciting development in antenna engineering. The application of this phenomenon to design useful antennas started only in the early 1970s …
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Antenna systems research
… is an overview of a number of investigations on antenna systems and related subjects over a period of 28 years, which has resulted in 44 publications in the technical literature, one current patent, and an M.Sc. thesis. The investigations have been grouped into 7 categories: - Log periodic …
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UAV-based Far-Field and Near-Field Antenna Measurements
L'abstract è presente nell'allegato / the abstract is in the attachment
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Novel XYZ scanner-based radiation and scattering measurement techniques for antena diagnostics and imaging applications
… novel experimental results in the fields of antenna measurement and inverse scattering for electromagnetic imaging applications that can be applied to different fields such as security (personnel screening, explosive detection), non-invasive inspection and structure analysis (fatigue and …