A fully polarimetric compact radar range operating at a center frequency of 100 GHz has been developed for obtaining radar cross section, inverse synthetic aperture radar imagery and high range resolution profiles on targets and structures of interest. The 100 GHz radar range provides scale-model RCS measurements for a variety of convenient scale factors including W-Band (1:1 scale), C-band (1:...

Vocal tremor is encountered in different neurological diseases and could be used for their characterisation. In this paper, vocal tremor features have been extracted for speakers with Parkinson’s disease and control speakers. It is shown that Parkinson’s disease has significant effects on vocal tremor features. For speakers with Parkinson’s disease, the average vocal frequency is higher and the...

This paper is a result of Author’s design of a Real Time System that as the main application analyzes human speech at the calling party, compresses/codes it in a Bandwidth about 500Hz instead of so called traditional bandwidth of 4KHz in Fixed Telephony Systems, then reconstructs the speech at the called party. This leads to expanding efficiency of using frequency band resources especially to e...

We give explicit analytical formulas for finding a signal with the known compact support from its spectrum known on a finite frequency band.

Wide band-gap power devices have enabled single-phase totem-pole (TP) factor correction (PFC) converter designs to be switched at several tens of kHz under hard-switching and hundreds soft-switching. It is straight-forward analyze compare the volume boost inductor for TP PFC converters having multi-leg multi-level configurations operating continuous-conduction-mode (CCM) critical-conduction-mod...

Spectrum scarcity is becoming a major issue for service providers interested in either deploying new services or enhancing the capacity for existing applications. On the other hand, recent measurements suggest that many portions of the licensed (primary) spectrum remain unused for significant periods of time. This has led the regulatory bodies to consider opening up under-utilized licensed freq...

This thesis presents optical characterizations of interfaces in ferromagnetic heterostructures and thin films used for spin polarized electronic devices. In these experiments, femtosecond laser spectroscopies are exploited to investigate the interface magnetization reversal, spin precession, and band offset, which are crucial in determining the performances of spintronic devices. First, magneti...