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

Highlights

1) This letter presents a stable implementation of Higdon’s ABC at multiple layers without attenuation factor.

2) The multiple Higdon’s ABC works well with wide-band frequency and ultra-thin layers, such as three.

3) Optimal parameters of the multiple Higdon’s ABC are presented in this letter.

4) The optimal angels of the multiple Higdon’s ABC satisfy a circle equation.