A new variable-width window is presented and compared with several other windows, both of variable and fixed widths. The comparison focuses on sensitivity and dynamic range. The equivalent noise bandwidth or ENBW (or rather, its reciprocal) is used as a proxy for the first; maximum sidelobe level and high-frequency roll-off in the Fourier transform, for the second. The new window can access any...

DS-CDMA is evaluated for rectangular pulse shaping and square root raised cosine pulses with different roll off factors. Rectangular pulses are found to be better even with close adjacent channels. With synchronization error in the order of 10% of a chip interval, square root raised cosine pulses outperform the rectangular pulse.

We report results from a new methodology for investigating the visually perceived properties of surface textures. Densely sampled two-dimensional 1/f^β noise processes are used to model natural looking surfaces, which are rendered using combined point-source and ambient lighting. Surfaces are shown in motion to provide rich cues to their relief. They are generated in real time to enable observe...

This article concerns the classification of household sounds for the development of an application to help people with hearing disabilities to resolve everyday situations which may present them with serious problems: telephone calls, the sound of the door bell, an alarm clock, the completion of a domestic appliance programme, etc. It presents the study carried out in order to obtain the best ac...

Superhydrophobic surfaces let water droplets roll off with low friction and falling droplets rebound, leaving the surfaces completely dry. Such extremely water repellent surfaces are found in nature on lotus leaves, the legs of water striders and feather coatings of birds, and portray a beautiful example of ingenious biological design. They provide an exciting research avenue for physicists and...

This paper presents a new and physical modeling approach for neutron SER with excellent accuracy demonstrated on SRAMs fabricated using 0.18pm CMOS technology. The SER contribution of each type of recoil ion and a fast roll-off behavior of neutron SER for high QCRIT nodes are reported for the first time.

In this letter, a three-dimensional (3-D) wide passband frequency selective surface (FSS) is proposed. Compared with planar FSSs, 3-D structures usually present superior roll-off characteristics, especially under lower frequency. However, wideband FSSs typically have greater insertion loss in the passband, and transmission characteristic sensitive to angle of incident electromagnetic wave. The ...

In this letter, a compact ultra-wideband (UWB) bandpass filter based on CPW-tomicrostrip transition structure is proposed. Compared with traditional UWB BPF using hybrid structures, the proposed filter has a more sharp selectivity due to a transmission zero located at the lower edge of the passband generated by the combined effect of both CPW-MS-CPW and interdigital coupling line (ICL). Moreove...

This paper presents a new ultra-wideband (UWB) bandpass filter (BPF) with sharp roll-off and dual-notched bands. The filter consists of a triangle ring multi-mode resonator (MMR) with the stub-loaded resonator (SLR) for controlling the two transmission zeros at 2.8 / 11 GHz, the embedded open-circuited stub and the asymmetric tight coupled input/output (I/O) lines for introducing the dual notch...