Efficient calculation of transient fields in multilayered media
A scheme for computing fields radiated by transient sources residing above a grounded multilayered medium is proposed. First, the causality trick is invoked to obtain a new representation of the field excited by transient sources. Second, starting from this representation, a novel approach to rapidly computing this field assuming that the mutilayered stack is electrically thin, is developed. Third, the approach is applied to the accelerated calculation of multilayered transient fields.
Time-Domain Integral Equation Solver for Planar Circuits Over Layered Media Using Finite Difference Generated Green's Functions
A simple, highly accurate, and efficient 2D finite-difference technique for computing the direct convolution of time-domain Green's functions (TDGFs) of layered media with temporal interpolators is presented. The proposed TDGFs are incorporated into a recently developed marching-on-in-time (MOT)-based time-domain integral equation (TDIE) solver based on noncausal high-order B-Spline temporal interpolators without requiring the prediction of future unknowns. Numerical results demonstrating the applicability of the technique to the analysis of various microwave structures are presented.
The Pleistocene Epoch in East Anglia
Abstract The sequence of Pleistocene deposits in East Anglia is tabulated. The following aspects of the Pleistocene are discussed and summarized: boundaries of the Pleistocene, glacial and preglacial, ice advances, interglacials, glaciations, marine horizons, climate and periglacial features. Correlations are given between the Pleistocene deposits of East Anglia and the continent.