A stable implementation of multiple Higdon’s absorbing boundary condition for Maxwell’s equations

<p></p><p>Highlights</p> <p>1) This letter presents a stable implementation of Higdon’s ABC at multiple layers without attenuation factor.</p> <p>2) The multiple Higdon’s ABC works well with wide-band frequency and ultra-thin layers, such as three.</p> <p>3) Optimal parameters of the multiple Higdon’s ABC are presented in this letter.</p> <p>4) The optimal angels of the multiple Higdon’s ABC satisfy a circle equation.</p><br><p></p>