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A permittivity measurement system for high frequency laboratories /Marais, Johannes Izak Frederik January 2006 (has links)
Thesis (MScIng)--University of Stellenbosch, 2006. / Bibliography. Also available via the Internet.
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Microwave resonator investigation of electric field effects on mercury surfaces.Ionides, George Nicos January 1969 (has links)
The microwave resonator method for studying small amplitude surface waves in liquids has been improved by making the time measurement more accurate and much more convenient. It was used to measure the oscillation frequency of the surface as a function of liquid depth. Discrepancies between the experimentally obtained results and theoretical predictions due to the rigidity of the mercury meniscus where contact is made with the walls of a cylindrical resonator were found. From these an accurate value for the effective reduction in radius of the resonator because of the meniscus effect was obtained. A method was developed for applying strong electrostatic fields (about 20 kV/cm) onto the fluid surface without interfering with the measuring technique. An interesting result of this was the observation that the field cleans the surface from contamination. This phenomenon manifests itself in a marked reduction in the damping of surface waves just after a large field is applied. A resonator of square cross-section was used to demonstrate the Fourier analyzing property of rectangular resonators. / Science, Faculty of / Physics and Astronomy, Department of / Graduate
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Passive microwave mapping of ice thickness /Apinis, John Janis January 1976 (has links)
No description available.
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Microwave measurements of dielectric properties of some polar liquidsCrawford, John Clark. January 1959 (has links)
Call number: LD2668 .T4 1959 C73
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Microwave measurements of the electric dipole moment and other dielectric properties of some organic compoundsWindle, Warren Floyd. January 1961 (has links)
Call number: LD2668 .T4 1961 W55
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Investigation into the monitoring of microwaves in microwave cavities using optical techniques /Matasane, Matasane Clement. January 1900 (has links)
Thesis (MTech (Electrical Engineering))--Peninsula Technikon, 2002. / Word processed copy. Summary in English. Includes bibliographical references (leaves 148-149). Also available online.
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Investigation of the impact of turbine blade geometry on near-field microwave blade tip time of arrival measurementsZimmer, Aline Katharina. January 2008 (has links)
Thesis (M. S.)--Aerospace Engineering, Georgia Institute of Technology, 2009. / Committee Chair: Jagoda, Jechiel; Committee Co-Chair: Jacobs, Laurence; Committee Member: Seitzman, Jerry. Part of the SMARTech Electronic Thesis and Dissertation Collection.
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Meteorological observations with passive microwave systems,Kreiss, William T. January 1968 (has links)
Thesis--University of Washington. / "This research has been supported by NASA Grant NsG-632 to the Department of Atmospheric Sciences, University of Washington, and by The Boeing Company." Bibliography: p. 195-198.
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Analysis of spatial filtering in phase-based microwave measurements of turbine blade tipsHolst, Thomas Arthur. January 2005 (has links)
Thesis (M. S.)--Mechanical Engineering, Georgia Institute of Technology, 2006. / Littles, Jerrol W. Jr., Committee Member ; Johnson, W. Steven, Committee Member ; Kurfess, Thomas R., Committee Chair ; Melkote, Shreyes N., Committee Member.
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Investigation into the monitoring of microwaves in microwave cavities using optical techniquesMatasane, Matasane Clement January 2002 (has links)
Thesis (MTech (Electrical Engineering))--Peninsula Technikon, Cape Town, 2002. / Tne purpose of this research or study was to perform an investigation in the use of optical
fibers as sensor elements in order to develop a millimetre wave instrument capable of
measuring microwave power within microwave cavities. Included in the scope of the
project was an investigation of microwaves and microwave power measurements
techniques.
The emphasis of the research work was to develop expertise in photonics, by modeling
and developing a measuring technique using optical techniques. This was deemed to be
highly beneficial in laboratory experimentation and for possible use by microwave
technicians. The implementation was amongst others, done by means of computer
simulation and associated hardware, together with fiber-optic accessories.
In order to conduct this research a literature and technology survey of current non-optical
microwave power measurement technique was done. With this a review different power
measurements systems and their relationship towards microwave power measurements
was conducted. Within the scope of the project, a study of fiber optics sensors and its
components was also conducted, which enabled models for a Mach-Zehnder microwave
sensor to be developed. This resulted in the development of inexpensive electronic signal
conditioning and detection techniques to enable measurements that employed a Mach-Zehnder
Interferometer for this sensor technique.
Finally, as microwaves are difficult to measure with pure electronic equipment, different
approaches were made to investigate the temperature changes and other parameters on
optical fiber to avoid damage to it. The specifications of hardware and circuitry suitable to measure these effects were determined.
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