38 citations · 179 across the 22 of their papers we have counts for
25 papers
The uniqueness of inverse scattering problems, reciprocity principles, and nonradiating sources related to low-signature structures
Johan Helsing, Anders Karlsson
This paper is about perfectly electrically conducting structures designed to produce negligible scattered power when exposed to a time-harmonic plane electromagnetic wave. The stru…
The Helmholtz Dirichlet and Neumann problems on piecewise smooth open curves
Johan Helsing, Shidong Jiang
A numerical scheme is presented for solving the Helmholtz equation with Dirichlet or Neumann boundary conditions on piecewise smooth open curves, where the curves may have corners…
Design of perfectly conducting objects that are invisible to an incident plane wave
Johan Helsing, Shidong Jiang, Anders Karlsson
This work concerns the design of perfectly conducting objects that are invisible to an incident transverse magnetic plane wave. The object in question is a finite planar waveguide…
Inverse problem for a planar conductivity inclusion
Doosung Choi, Johan Helsing, Sangwoo Kang +1
This paper concerns the inverse problem of determining a planar conductivity inclusion. Our aim is to analytically recover from the generalized polarization tensors (GPTs), which c…
An efficient full wave solver for eddy currents
Johan Helsing, Anders Karlsson, Andreas Rosén
An integral equation reformulation of the Maxwell transmission problem is presented. The reformulation uses techniques such as tuning of free parameters and augmentation of close-t…
Solving Fredholm second-kind integral equations with singular right-hand sides on non-smooth boundaries
Johan Helsing, Shidong Jiang
A numerical scheme is presented for the solution of Fredholm second-kind boundary integral equations with right-hand sides that are singular at a finite set of boundary points. The…