Time-domain Integral-equation-based Solver for Transient and Broadband Problems in Electromagnetics
نویسندگان
چکیده
A time-domain (TD) numerical method has been developed based on the method-of moments (MoM) and marching-on-time (MoT) solution of the electrical-type integral equation with mixed potential formulation and free-space Green’s functions. This timedomain integral-equation (TDIE) code is applicable for arbitrary 3-D antennas and arrays composed conductors. It was developed particularly to simulate ultra-wideband (UWB), finite phased arrays of tapered slot antennas and some results from this study are included in the paper. The TDIE, which calculates wideband data in a single solution and utilizes basis functions defined only on the surfaces of conductors but not throughout the entire volume of the array, requires much less RAM and CPU time than frequency-domain and FDTD methods.
منابع مشابه
Time-Domain Analysis of Two-Dimensional Scattering Problems by Use of a Source-Model Technique
Time-domain integral equation based solution techniques have gradually shifted over the last couple of years into the focus of computational electromagnetics research [1]. In this paper, we present a mesh-free time-domain integral equation solution for the problem of electromagnetic scattering by a two-dimensional metallic cylinder illuminated by a TM (transverse magnetic) plane wave pulse. In ...
متن کاملNon-conformal domain decomposition methods for time-harmonic Maxwell equations.
We review non-conformal domain decomposition methods (DDMs) and their applications in solving electrically large and multi-scale electromagnetic (EM) radiation and scattering problems. In particular, a finite-element DDM, together with a finite-element tearing and interconnecting (FETI)-like algorithm, incorporating Robin transmission conditions and an edge corner penalty term, are discussed in...
متن کاملThree dimensional static and dynamic analysis of thick plates by the meshless local Petrov-Galerkin (MLPG) method under different loading conditions
In this paper, three dimensional (3D) static and dynamic analysis of thick plates based on the Meshless Local Petrov-Galerkin (MLPG) is presented. Using the kinematics of a three-dimensional continuum, the local weak form of the equilibrium equations is derived. A weak formulation for the set of governing equations is transformed into local integral equations on local sub-domains by using a uni...
متن کاملNovel Algorithms for Ultra Scale Electromagnetic Problems in the Supercomputing Era
The need for increasing fidelity and accuracy in mission-critical electromagnetic applications have pushed the problem sizes toward extreme computational scales. Therefore, there is a large premium placed on the investigation of parallel and scalable integral equation simulators, a particularly useful class of computational electromagnetics, to meet this demand. This dissertation will focus on ...
متن کاملThe Transient Behavior of LC and Ring Oscillators under External Frequency Injection
In this work, time domain analysis is used to solve Adler’s equation in order to obtain the required time, for an oscillator under external injection, reaching the steady-state condition. Mathematical approach has been applied to fully describe the transient of frequency acquisition in injection-locked LC and Ring oscillators considering their time-varying nature. Then, the analysis is verifie...
متن کامل