For ultra-wideband (UWB) communication, Rake receivers using matched filter detection show the best performance but they are complex to realize due to the inherent channel estimation problem and combining problem. Transmitted reference schemes, on the other hand, allow for a less complex receiver structure that is able to combine the energy from different multipath components without channel es...

This paper presents a novel hybrid bias concept for liquid crystal (LC) filter by using simultaneously electric and magnetic fields. It enables continuous tuning with simplified electrode design, decreased number of electrodes reduced voltage. Furthermore, the efficiency is increased, since homogeneous fields enable full exploitation LC's anisotropy. To demonstrate this concept, reconfigurable ...

The paper presents a novel Modulated Power Filter and Compensator (MPFC) scheme for voltage stability, energy conservation, loss reduction, power factor correction, and power quality enhancement for electric distribution systems based on Multi-Objective Particle Swarm Optimisation (MOPSO). The MPFC scheme was developed by the first author to vary the shunt power filter equivalent admittance, mo...

We report temporal shaping of few-cycle terahertz pulses, using a slit in a conductive screen as a high-pass filter. The filter's cutoff frequency was tuned by changing the width of the slit; the slope of the cutoff transition was altered by changing the thickness of the screen. We measured the transmission function of the filters, using large-aperture photoconducting antennas to create and det...

The active power filter has gained much more attention because of its effective performance to mitigate the harmonics. This paper presents shunt active power filter (SAPF) controlled by PI controller to compensate the harmonics. Also, it introduces a new artificial intelligent technique called Bacterial Foraging Optimization to optimize the parameters of the PI-controller through on-line self-a...

A novel design for a waveguide band-rejection filter carrying high power in its pass band is presented. The resonant cavities of the filter are mounted in pairs on the narrow walls of the guide and coupled to the guide through rectangular openings the full height of the guide. Thus there are no edges or radii on which electric field concentrations can occur. An X-band model having six cavity pa...

The growing share of renewable energies in power production and the rise market battery electric vehicles increase demand for technologies. In both fields, a predictable operation requires knowledge internal state, especially its state charge (SoC). Since direct measurement SoC is not possible, Kalman filter-based estimation methods are widely used. this work, step-by-step guide implementation ...

Due to the ever-increasing in non linear loads and the worldwide trend to establish smart grids, harmonic level in the electricity grids is significantly increased. In addition to their impact on power quality, harmonic current can have a devastating effect on the operation of over current relays as they are designed to operate efficiently at the fundamental frequency. The distorted waveform wi...

We introduce Random Projection Filter Bank (RPFB) as a general framework for feature extraction from time series data. RPFB is a set of randomly generated stable autoregressive filters that are convolved with the input time series. Filters in RPFB extract different aspects of the time series, and together they provide a reasonably good summary of the time series. These features can then be used...