# Modeling of Resonating Closed Impedance Bodies with Surface Integral Equation Methods

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**Modeling of Resonating Closed Impedance Bodies with Surface Integral Equation Methods.** / Yla-Oijala, Pasi; Kong, Beibei; Jarvenpaa, Seppo.

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*IEEE Transactions on Antennas and Propagation*, Vuosikerta. 67, Nro 1, Sivut 361 - 368. https://doi.org/10.1109/TAP.2018.2877311

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*IEEE Transactions on Antennas and Propagation*,

*67*(1), 361 - 368. https://doi.org/10.1109/TAP.2018.2877311

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### RIS - Lataa

TY - JOUR

T1 - Modeling of Resonating Closed Impedance Bodies with Surface Integral Equation Methods

AU - Yla-Oijala, Pasi

AU - Kong, Beibei

AU - Jarvenpaa, Seppo

PY - 2019/1

Y1 - 2019/1

N2 - Numerical solutions of various surface integral equation formulations in modeling resonating (lossless) closed impedance bodies are investigated. It is demonstrated that for certain values of purely imaginary surface impedances very strongly resonating field solutions can appear. Some of the considered formulations that are known to work well outside these resonances, e.g., for lossy surfaces, can lead to very poor accuracy or even diverging solutions at these resonances. Among the considered formulations only the combined source integral equations, discretized with a mixed scheme, both avoid the nonphysical spurious internal resonances and work reasonably well at the physical (impedance) resonances.

AB - Numerical solutions of various surface integral equation formulations in modeling resonating (lossless) closed impedance bodies are investigated. It is demonstrated that for certain values of purely imaginary surface impedances very strongly resonating field solutions can appear. Some of the considered formulations that are known to work well outside these resonances, e.g., for lossy surfaces, can lead to very poor accuracy or even diverging solutions at these resonances. Among the considered formulations only the combined source integral equations, discretized with a mixed scheme, both avoid the nonphysical spurious internal resonances and work reasonably well at the physical (impedance) resonances.

KW - combined field integral equation

KW - combined source integral equation

KW - Electric field integral equation

KW - impedance boundary condition

KW - impedance integral equation

KW - resonance

KW - self-dual formulation

KW - spurious solution

UR - http://www.scopus.com/inward/record.url?scp=85055137735&partnerID=8YFLogxK

U2 - 10.1109/TAP.2018.2877311

DO - 10.1109/TAP.2018.2877311

M3 - Article

VL - 67

SP - 361

EP - 368

JO - IEEE Transactions on Antennas & Propagation

JF - IEEE Transactions on Antennas & Propagation

SN - 0018-926X

IS - 1

ER -

ID: 29254505