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.
Results
Showing 1 to 10 of 10 for “"Time Domain Measurements"”.
-
Time domain metrology for dielectric spectroscopy of particulates
… the permittivity of soil samples using measurements in the time domain were studied. A number of algorithms for inverting the measured data to obtain epsilon were investigated and three different types of sampling devices were examined. The investigation examined the positive and …
-
Experimental Demonstration of Lindblad Tomography on a Superconducting Quantum Device
… T₂, which are readily accessible from standard time-domain measurement. While T₁ and T₂ times provide rough heuristics for interaction between single qubits and their lossy environments, these numbers stand in as mere proxies for the full multi-qubit loss channel of interest, which can be …
-
A Study of Indoor Ultra-wideband Propagation Measurement and Characterization
… This thesis focuses primarily on a frequency-domain approach for propagation measurements and characterization of indoor UWB channels. This approach is based on measurements of the amplitude using a scalar network analyzer and retrieval of the phase from the amplitude data using a Hilbert …
-
Dielectric Measurements for Organ Cryopreservation
… and of perfused rabbit kidney tissue. Dielectric measurements were made with both time and frequency domain instrumentation, over a frequency range of 50MHz to 2.6GHz, and a temperature range of -30'C to +20'c. The more successful of the two systems uses an open-ended coaxial probe with a new, …
-
Location estimation in a 3D environment using radio frequency identification tags
… strength variations were insignificant. Instead, time domain measurements with the help of an external antenna were conducted. The composite signal width including of the wake up signal of the interrogator, travel time between the interrogator and tag, and the tag's response was measured and …
-
Characterization of Ultra Wideband Communication Channels
… measured in different ways using a variety of time-domain and frequency-domain techniques. The experimental setups used in channel characterization effort also include pulse generators and antennas as integral parts of the channel, since the pulse shape and antenna characteristics have …
-
The anelastic structure and deep geology of the Derbyshire Dome from high frequency Rayleigh waves.
… of possible errors on timing and amplitude measurements are investigated and reduced. Time domain measurements indicate the Carboniferous Limestone district of the Derbyshire Dome consists of smaller provinces the boundaries of which are marked by sudden changes in group velocity and …
-
Optimal filters for deconvolution of transient signals in the presence of noise
… different methods for the deconvolution of time domain signals. The techniques developed in this work are frequency domain filtering techniques. and are suitable for the type of deconvolution problems encountered in time domain reflectometry (TOR). They include a smoothing technique that is …
-
Essays on financial econometrics : variance and covariance estimation using price durations
… variance and covariance estimators are based on time-domain measurements. In this thesis, we investigate variance and covariance estimators constructed on the price domain: the price duration based variance and covariance estimators. A price event occurs when the absolute cumulative price change …
-
The Analysis and Design of Phase-tunable Low-Power Low-Phase-Noise I/Q Signal Sources for Analog Phase Calibrated Transceivers
… advantage over classical calibration techniques. Time domain measurements performed on a 5 GHz prototype show that I/Q signals with phase error up to ~±30°, beyond which the VCO cores are unlocked, can be driven to perfect quadrature phase. The PT-QVCO can be tuned from 3.87-4.45 GHz at the …