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 10 of 10 for “"time-domain techniques"”.
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Reconciling modal and time domain techniques in photonic simulation
Three dimensional Finite Difference Time Domain (3D-FDTD) simulation serves as the indisputable gold standard for device design and verification in silicon photonics. However, 3D-FDTD is prohibitively expensive for large devices let alone cascaded systems, leading to the pursuit of a diversified …
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New methods for dynamic nuclear polarization in insulating solids : the Overhauser effect and time domain techniques
… effect. Our second approach is to perform time domain or pulsed DNP, which differs fundamentally from CW DNP, and like CP and INEPT transfers, is in principle independent of B0. In particular, we have investigated the performance of two related pulse sequences including the nuclear …
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Time domain device modeling of High Frequency Power MOSFETs
… that the frequency range of these MOSFETs is in domains where typically scattering parameter measurements are used, a broad band device model can prove to be extremely useful. This thesis summarizes the research performed towards the development of a wideband Gate model for the Motorola MRF162 …
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Wideband electromagnetic characterization of Portland cement concrete
… MHz. Measurements have been performed in both time domain and frequency domain. The focus of this research has been to investigate time domain techniques for the characterization of PCC specimens under different test conditions. A simplified TDR measurement technique using one-port calibration …
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The Applicability of the Tap-Delay Line Channel Model to Ultra Wideband
… from the measurement data. Both frequency domain and time domain techniques were studied in this work. After a comparison, we examined a time domain technique known as the CLEAN algorithm for our channel modeling analysis. A detailed analysis of the CLEAN algorithm is given, as it is found …
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Wideband characterization of thick film inductors
This work presents a method based on time domain techniques to characterize and model thick film inductor structures. The method is a time domain reflection (TOR) measurement which measures the input port's reflection transfer function of the component under test. The reflection from a short …
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Experimental Identification of Nonlinear Systems
… We then compare this technique with two other techniques that have been presented in the literature. In addition to the amplitude- and frequency-sweep technique presented, we apply a second frequency-domain technique and a time-domain technique to the second mode of a cantilevered beam. We …
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Performance evaluation of a spread spectrum local area position location system
… Ground based radio frequency spread spectrum techniques were chosen due to their relatively low cost, ease of implementation, and all weather capability. Two types of spectral spreading were examined: frequency hopping and direct sequence. The error performance capabilities of spread spectrum …
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Robust Control of Input-Delay Linear Parameter-Varying (LPV) Systems
Practical systems are nonlinear and time-varying and thus linear techniques can expose their control design to extra conservatism. Nevertheless, the Linear Parameter-Varying (LPV) representation can effectively describe them, which in contrast to linearization, maintains the principal dynamic modes …