Spherical Fourier-Transform-Based Real-Time Near-Field Shaping and Focusing in Beyond-5G Networks
For ultra-reliable high-data-rate communication, the beyond fifth generation (B5G) and the sixth generation (6G) wireless networks will heavily rely on beamforming, with mobile users often located in the radiative near-field of large antenna systems. Therefore, a novel approach to shape both the amplitude and phase of the electric near-field of any general antenna array topology […]
A Two-Step Approach for the Analysis of Bulk Current Injection Setups Involving Multiwire Bundles
In this work, a two-step procedure to predict maximum(worst-case scenario) and minimum (best-case scenario) noise levels induced by bulk current injection (BCI) at the terminal sections of awiring harness is presented.To this end, common mode (CM) and differential mode (DM) quantities are introduced by a suitable modal transformation, and equivalent modal circuits are derived, where […]
Construction of the differential surface admittance operator with an extended Fokas method for electromagnetic scattering at polygonal objects with arbitrary material parameters
This article presents a novel method to accurately simulate electromagnetic scattering at homogeneous polygonal cylinders with arbitrary material properties. A single source equivalence approach is invoked, allowing to substitute the background medium for the inner material of the scatterer, provided an equivalent surface current density is introduced. We construct the pertinent differential surface admittance operator […]
Interconnect Modeling using a Surface Admittance Operator Derived with the Fokas Method
In this contribution, we propose a novel approach to rigorously model interconnect structures with an arbitrary convex polygonal cross-section and general, piecewise homogeneous, material parameters. A full-wave boundary integral equation formulation is combined with a differential surface admittance approach, invoking an extended form of the numerically fast Fokas method to construct the pertinent operator. Several […]
A Hybrid EM/QM Framework Based on the ADHIE-FDTD Method for the Modeling of Nanowires
A new modeling formalism to compute the time-dependent behavior of combined electromagnetic (EM) and quantum mechanical (QM) systems is proposed. The method is geared towards highly multiscale geometries, which is vital for the future design of nanoelectronic devices. The advocated multiphysics modeling formalism leverages the alternating-direction hybrid implicit-explicit (ADHIE) finite-difference time-domain (FDTD) method for the […]
A Robust Bayesian Optimization Framework for Microwave Circuit Design Under Uncertainty
In modern electronics, there are many inevitable uncertainties and variations of design parameters that have a profound effect on the performance of a device. These are, among others, induced by manufacturing tolerances, assembling inaccuracies, material diversities, machining errors, etc. This prompts a wide interests in enhanced optimization algorithms that take the effect of these uncertainty […]
An efficient algorithm to determine the operational range of near-field on-body UHF RFID systems
A new algorithm is proposed, leveraging a 3D multipole expansions of the electromagnetic fields, to accurately determine the operational range of a radiative near-field on-body radio-frequency identification (RFID) system based on its far field radiation patterns, simulated or measured, under realistic deployment conditions. We illustrate the advocated method by an interrogating 866 MHz standard gain […]
Accurate Characterization of Radiation from Interconnects on Interposer at mmWave Frequencies
An electromagnetic interference (EMI) assessment of mmWave interposers becomes increasingly important as the need for heterogeneous systems increases. However, the small size and complexity of these platforms make it more difficult to accurately measure them and, thus, a dedicated set-up to isolate the interposer’s emission is required. In this contribution, we first show experimentally that […]
Uncertainty Quantification of Electromagnetic Devices, Circuits, and Systems
Profs. Paolo Manfredi and Dries Vande Ginste authored Chapter 2 (Polynomial Chaos Based Uncertainty Quantification in Electrical Engineering: Theory) and Chapter 3 (Polynomial Chaos Based Uncertainty Quantification in Electrical Engineering: Applications) of the book Uncertainty Quantification of Electromagnetic Devices, Circuits, and Systems, edited by Prof. Sourajeet Roy and published by the Institution of Engineering and […]
Efficient modeling of on-body passive UHF RFID systems in the radiative near-field
A novel method is presented to accurately determine the operational range of an on-body, passive ultra-high-frequency (UHF) radio-frequency identification (RFID) system operating in the radiative near-field, based on its far-field radiation patterns. To this end, an efficient algorithm based on 3-D multipole expansion of the electromagnetic fields is formulated. By combining the new operator with […]