Results 21 to 30 of about 270,101 (314)
IEEE Access, 2019 In this paper, a systematic design methodology of a 0dB and a 3dB forward couplers based on the ridge gap waveguide (RGW) technology is presented. This methodology is based on exact theoretical formulations rather than any approximate or empirical ...
Abduladeem Beltayib, Abdel-Razik Sebak
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IEEE Access, 2023 This study proposes a dielectric lens antenna that implements an impedance matching layer comprising square-pillar periodic structures on the lens surface to reduce the surface reflection formed in the lens from a high-permittivity dielectric material ...
Bazilah Baharom +7 more
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IEEE Access, 2019 The development of wireless and satellite communication has led to a demand for high-performance microwaves and mm-wave components in terms of cost, losses, and fabrication complexity.
Syed M. Sifat +3 more
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Optimal periodic output feedback control: a continuous-time approach
, 2007 : This paper addresses the problem of optimal static output feedback control of linear periodic systems. The proposed approach, which allows to deal with both stable and unstable open loop systems, relies on a continuous-time formulation of the control ...
VIGANO', LUCA +8 more
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Gongneng cailiao yu qijian xuebaoThis paper proposes a new structure of periodic photonic crystal based on the hybrid integration of silicon-based waveguides and phase change materials, which is used to construct optical switch device.
Wei ZHU +4 more
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Numerical Analysis of the Mitigation Performance of a Buried PT-WIB on Environmental Vibration
Sensors, 2023 Environmental vibration pollution has serious negative impacts on human health. Among the various contributors to environmental vibration pollution in urban areas, rail transit vibration stands out as a significant source.
Lei Gao +3 more
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Radiative Transport in a Periodic Structure [PDF]
Journal of Statistical Physics, 1999 We derive radiative transport equations for solutions of a Schrödinger equation in a periodic structure with small random inhomogeneities. We use systematically the Wigner transform and the Bloch wave expansion. The streaming part of the radiative transport equations is determined entirely by the Bloch spectrum, while the scattering part by the random ...
Bal, Guillaume +3 more
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Computation of Kalman Decompositions of Periodic Systems
, 2003 We consider the numerically reliable computation of reachability and observability Kalman decompositions of a periodic system with time-varying dimensions.
A. Varga +3 more
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Homogenization of a Thermoelastic Bristly Structure Immersed in a Thermofluid
AxiomsThe article considers the mathematical model describing the joint motion of a viscous compressible heat-conducting fluid and a thermoelastic plate with a fine two-level thermoelastic bristly microstructure attached to it.
Sergey Sazhenkov, Elena Sazhenkova
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On computing the zeros of periodic systems
, 2002 We present an effcient and numerically reliable approach to compute the zeros of a periodic system. The zeros are defined in terms of the transfer-function matrix corresponding to an equivalent lifted statespace representation as constant system.
Dooren, P. Van +6 more
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