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 7 of 7 for “"antenna placement"”.
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Application of characteristic mode analysis to variable antenna placement on devices operating in the near -resonant range
<p>As antenna sizes on portable wireless devices decrease to the dimensions of the device itself and to that of the operating wavelength, the system begins to operate in the near-resonant frequency range. Currently, a straightforward synthesis approach for determining optimal antenna placement …
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The Development of a Small Scale Radio Astronomy Image Synthesis Array for Research in Radio Frequency Interference Mitigation
… arrays are composed of many parabolic reflector antennas. These antennas are designed to be extremely sensitive to detect faint emissions from astronomical sources. Unfortunately, this also makes them susceptible to radio frequency interference (RFI) from man made sources such as orbiting …
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Ordinal Logistic Regression Analysis of RFID Doorway Portal Performance as a Function of System Design Parameters
… (RFID) doorway portal as a function of antenna placement, doorway size and composition, reader manufacturer, tag type, and tag orientation. In this analysis of a RFID system, the response observations were modeled under an ordinal logistic regression model. The selection of a categorical …
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Measurement Based Channel Characterization and Modeling for Vehicle-to-Vehicle Communications
… (paper V) and, the fourth topic is the impact of antenna placement on vehicles and the possible diversity gains. This thesis consists of an introduction and six papers: Paper I presents a double directional analysis of vehicular channels based on channel measurement data. Using SAGE, a …
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Investigation of Integrated Decoupling Methods for MIMO Antenna Systems. Design, Modelling and Implementation of MIMO Antenna Systems for Different Spectrum Applications with High Port-to-Port Isolation Using Different Decoupling Techniques
Multiple-Input-Multiple-Output (MIMO) antenna technology refers to an antenna with multiple radiators at both transmitter and receiver ends. It is designed to increase the data rate in wireless communication systems by achieving multiple channels occupying the same bandwidth in a multipath …
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MIMO Communication Capacity: Antenna Coupling and Precoding for Incoherent Detection
… on the capacity performance of these multi-antenna architectures. Specifically, it examines the impact of superdirectivity for compact antenna arrays, the effect of antenna mutual coupling, and MIMO performance of multi-mode optical fiber with non-linear detection. Superdirectivity can lead …
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Small, dual band, placement insensitive antennas
… properties. This limitation stems from the antenna choice for these labels - a dipole variant. The slot antenna, the effective inverse of the dipole, is shown to be an effective RFID antenna for environment-independent peel-and-stick applications. A miniaturization and multi-band design …