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We demonstrate a PMD measurement technique for 10-Gbit/s signals using time domain evolution of Stokes vector with a low sampling-rate coherent receiver. An accuracy of 2ps DGD is achieved over 0 to 25 ps.
In this paper, the matching-on-in-order time-domain volume-surface integral equation (MOO TD-VSIE) method is utilized to analyze electromagnetic scattering from objects composed of both conductor and dielectric material. SWG and RWG basis functions are used as the spatial basis functions in volume and surface discretization respectively. Different orders of weighted Laguerre polynomials are used as...
In this paper, a novel solution to marching-on-in-order (MOO) time-domain integral equations (TDIE) are introduced using order-independent temporal (OIT) basis functions to analyze transient electromagnetic scattering from perfect electrically conducting (PEC) structures. The OIT basis function is based on the Laguerre polynomials and generated via a singular value decomposition (SVD). It can considerably...
A weakly conditionally stable (WCS) finite-different time-domain (FDTD) algorithm is presented for resonant cavity analysis. The time-step in the WCS-FDTD is based on the largest cell size. And compared with the alternating-direction implicit (ADI) FDTD, the WCS-FDTD method is of higher accuracy and efficiency. Numerical results indicate that the CPU time for the WCS-FDTD method can reduced to about...
In this paper, one kind of subgrid techniques using physical connection between the main grid and subgrid is proposed. The physical space is composed of two fictitious spaces by equivalent principle. More details and accurate results in critical areas of interest are obtained by Huygens method replacing the wave equation on the interface of main grid and subgrid. Following physical principles rigorously,...
Based on high order hierarchical vector function, the finite-element time-domain (FETD) method combined with tearing and interconnecting (TI) algorithm is presented. This method is efficient for time domain analysis of substrate integrated waveguide (SIW) structures, since the SIW structures have a lot of fine via holes. By means of the high order hierarchical vector function, the accuracy and ability...
In this paper, the UV method is utilized to reduce both the memory requirement and computational complexity in time-domain combined field integral equation (TD-CFIE) method to analyze scattering from arbitrarily shaped conducting structures. The UV method takes advantage of the rank-deficiency feature and it is kernel-independent. Different orders of weighted Laguerre polynomials are used as temporal...
In this paper, one kind of subgrid technique using physical connection between different sizes cells is presented. Huygens method, one representation of equivalence principle, is employed to solve the problems of filed values on the interface of different size cells. This new technique could solve discontinuous structural electromagnetic problems.
This paper gives a concise overview on various well-accepted approaches to power system harmonic analysis. Modeling strategies for harmonic sources and network components are presented. Simulation techniques in the frequency, time and harmonic domains are described. Their advantages, drawbacks and applicability are also discussed.
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