We studied the durations and average speeds of videopulses transmitted through chiral sculptured thin films using a finite–difference algorithm. The chiral STF was either linear or possessed an intensity–dependent permittivity. Videopulse durations tended to decrease with increasing carrier wavelength and to increase, for given carrier wavelength and polarization state, when the chiral STF was ...

Capacity has become of primary importance in broadband wireless access (BWA) networks due to the increasing demand for multimedia services and the possibility of providing wireless Internet, leading to their standardization by IEEE (802.16, WirelessMAN, WiMAX) and ETSI (HiperMAN). The major factor limiting capacity in such systems is interference originating from adjacent cells, namely, interce...

We present a setup for highly polarized proton beams using two parallel propagating laser pulses that have carrier envelope phase difference of $\pi$. This mechanism is examined utilizing particle-in-cell simulations and compared to single-pulse commonly used magnetic vortex acceleration. find the use dual-pulse allows peak energies 124 MeV good angular spread with normalized vector potential $...

Microwave photonic phase-shifting technology can be used to generate high-frequency, broadband, and tunable phase-coded microwave signals, which are helpful in solving the contradiction between detection range resolution radar systems. A method for generating a reconfigurable carrier signal of fundamental or doubled frequency, based on polarization multiplexed technology, is proposed verified b...

In recent years, there has been an increasing interest in dual linear polarization antennas for various purposes, e.g. polarimetric synthetic aperture radar (SAR) imaging. A key design goal for dual polarization antennas is to obtain a high cross-polarization suppression. When using standard techniques for improving the cross-polarization suppression in dual linear polarization antenna arrays u...

Based on time-resolved electroluminescence (TREL) measurement, more efficient carrier injection, transport, relaxation, and recombination associated with a stronger carrier localization and a low polarization effect in a nonpolar m-plane InGaN/GaN light emitting diode (m-LED), compared with those in a polar c-LED, are reported. With a higher applied voltage in the c-LED, decreasing response tim...

It is well known that multipath effect remains a dominant error source that affects the positioning accuracy of Global Navigation Satellite System (GNSS) receivers. Significant efforts have been made by researchers and receiver manufacturers to mitigate multipath error in the past decades. Recently, a multipath mitigation technique using dual-polarization antennas has become a research hotspot ...