A semi-analytical methodology is presented for the accurate analysis of time-domain radiation characteristics of antenna sensors. A locally conformal finite-difference time-domain technique is adopted to derive a minimal pole/residue spherical harmonic expansion of the equivalent currents excited on a suitable Huygens surface enclosing the sensing device. In this way, by using the singularity expansion method, the time-domain gain of the structure can be evaluated in closed form as the superposition of non-uniform spherical wave contributions attenuating along with the time and space according to the complex poles accounting for the natural resonant processes occurring in the device.

A Hybrid FDTD/SEM Model for Accurate Analysis of Time-Domain Radiation Properties of Antenna-Based Sensors

LAY EKUAKILLE, Aime;VERGALLO, PATRIZIA;
2013-01-01

Abstract

A semi-analytical methodology is presented for the accurate analysis of time-domain radiation characteristics of antenna sensors. A locally conformal finite-difference time-domain technique is adopted to derive a minimal pole/residue spherical harmonic expansion of the equivalent currents excited on a suitable Huygens surface enclosing the sensing device. In this way, by using the singularity expansion method, the time-domain gain of the structure can be evaluated in closed form as the superposition of non-uniform spherical wave contributions attenuating along with the time and space according to the complex poles accounting for the natural resonant processes occurring in the device.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11587/372931
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