نتایج جستجو برای: sharp roll off
تعداد نتایج: 239699 فیلتر نتایج به سال:
This letter presents a two-port dual-band filtering network, which can be integrated with antennas for antenna applications in sub-6 GHz systems. The proposed network consists of slotline resonator and two stub groups, featuring second- third-order resonant characteristics at the lower upper frequencies. Analysis by establishing equivalent circuits is carried out to verify performance network. ...
This paper describes the implementation of a new parametric model of the glottal geometry aimed at improving male and female speech synthesis in the framework of articulatory analysis synthesis. The model represents glottal geometry in terms of inlet and outlet area waveforms and is controlled by parameters that are tightly coupled to physiology, such as vocal fold abduction. It is embedded in ...
Whereaswater drops on both lotus leafs and rose petals have high contact angles, the drops can easily roll off lotus leafs but strongly adhere to rose petals. Here, we report a simple and cost-effective approach to fabricate highly stretchable large-area surfaces that give lotusleaf and rose-petal effects by harnessing origami patterns formed in graphene paper (GP) bonded on a pre-strained elas...
We consider a blind separation problem for undetermined mixtures of two BPSK signals in a multi-path fading channel. We use independence and frequency diversity of the two source signals to identify mixture parameters, estimate Pulse Shaping Filters (PSF) and channel responses, as well as to extract both binary sequences from only one observation. Presented method uses gradient descent algorith...
Local isotropy, or the statistical isotropy of small scales, is one of the basic assumptions underlying Kolmogorov’s theory of universality of small-scale turbulent motion. The literature is replete with studies purporting to examine its validity and limitations. While, until the midseventies or so, local isotropy was accepted as a plausible approximation at high enough Reynolds numbers, variou...
Background Several risk factors for the development of running injuries have been identified, however, the etiology is still not completely clear [1]. A number of prospective studies have identified gait-related risk factors for lower leg overuse injuries [2-6]. On the other hand, running injuries only develop by overloading the lower extremity. Fatigue can therefore be hypothesized to be a pri...
Closed Form Fractional Integration and Differentiation via Real Exponentially Spaced Pole-Zero Pairs
We derive closed-form expressions for the poles and zeros of approximate fractional integrator/differentiator filters, which correspond to spectral roll-off filters having any desired log-log slope to a controllable degree of accuracy over any bandwidth. The filters can be described as a uniform exponential distribution of poles along the negative-real axis of the s plane, with zeros interleavi...
We investigate the nonlinear power transfer characteristics of a silicon photonic microring resonator. We show that the microring device behaves as a power limiter if the roll-off tail of its resonance is steeper than a simple Lorentzian lineshape. OCIS codes: (230.4110) Modulators; (230.4555) Coupled Resonators; (200.4650) Optical Interconnects.
The recent development of MOSFET demands innovative approach to maintain the scaling into nanoscale dimension. This paper focuses on the physical nature of vertical MOSFET in nanoscale regime. Vertical structure is one of the promising devices in further scaling, with relaxed-lithography feature in the manufacture. The comparison of vertical and lateral MOSFET performance for nanoscale channel ...
A circuit design methodology minimizing total power drain of a static complementary metal–oxide–semiconductor (CMOS) random logic network for a prescribed performance, operating temperature range, and short channel threshold voltage rolloff is investigated. Physical, continuous, smooth, and compact “Transregional” MOSFET drain current models that consider high-field effects in scaled devices an...
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