## Search

Now showing items 1-10 of 22

#### Accurate solutions of scattering problems involving low-contrast dielectric objects with surface integral equations

(Institution of Engineering and Technology, 2007)

We present the stabilization of the surface integral equations for accurate solutions of scattering problems involving low-contrast dielectric objects. Unlike volume formulations, conventional surface formulations fail to ...

#### Efficient solution of the electric-field integral equation using the iterative LSQR algorithm

(Institute of Electrical and Electronics Engineers, 2008)

In this letter, we consider iterative solutions of the three-dimensional electromagnetic scattering problems formulated by surface integral equations. We show that solutions of the electric-field integral equation (EFIE) ...

#### Circular arrays of log-periodic antennas for broadband applications

(IEEE, 2006)

Circular arrays of log-periodic (LP) antennas are designed for broadband applications. A sophisticated electromagnetic simulation environment involving integral equations and fast solvers is developed to analyze the LP ...

#### The solution of large EFIE problems via preconditioned multilevel fast multipole algorithm

(Institution of Engineering and Technology, 2007)

We propose an effective preconditioning scheme for the iterative solution of the systems formulated by the electric- field integral equation (EFIE). EFIE is notorious for producing difficult-to-solve systems. Especially, ...

#### Optimal interpolation of translation operator in multilevel fast multipole algorithm

(Institute of Electrical and Electronics Engineers, 2006)

Lagrange interpolation of the translation operator in the three-dimensional multilevel fast multipole algorithm (MLFMA) is revisited. Parameters of the interpolation, namely, the number of interpolation points and the ...

#### Solutions of large integral-equation problems with preconditioned MLFMA

(IEEE, 2007)

We report the solution of the largest integral-equation problems in computational electromagnetics. We consider matrix equations obtained from the discretization of the integral-equation formulations that are solved ...

#### Extending the applicability of the combined-field integral equation to geometries containing open surfaces

(Institute of Electrical and Electronics Engineers, 2006)

In this letter, we consider the solution of large electromagnetics problems of composite structures with coexisting open and closed conductors. By modifying the construction of the combined-field integral equation (CFIE), ...

#### A hierarchical partitioning strategy for an efficient parallelization of the multilevel fast multipole algorithm

(IEEE, 2009)

We present a novel hierarchical partitioning strategy for the efficient parallelization of the multilevel fast multipole algorithm (MLFMA) on distributed-memory architectures to solve large-scale problems in electromagnetics. ...

#### Enhancing the accuracy of the interpolations and anterpolations in MLFMA

(Institute of Electrical and Electronics Engineers, 2006)

We present an efficient technique to reduce the interpolation and anterpolation (transpose interpolation) errors in the aggregation and disaggregation processes of the multilevel fast multipole algorithm (MLFMA), which is ...

#### Novel electromagnetic surface integral equations for highly accurate computations of dielectric bodies with arbitrarily low contrasts

(Journal of Computational Physics, 2008)

We present a novel stabilization procedure for accurate surface formulations of electromagnetic scattering problems involving three-dimensional dielectric objects with arbitrarily low contrasts. Conventional surface integral ...