### Abstract

The adaptive cross approximation algorithm is invoked for the fast construction of the method-of-moment matrix involving source basis functions for the currents and a set of auxiliary test functions that samples the radiated electromagnetic (EM) field. Once the adaptive cross approximation coupling matrix is constructed, the far and near fields from a source current are obtained directly through a single matrix-vector product. The post-processing method is particularly fast when the EM fields are smoothly varying over their sampling domain, or when far fields need to be computed for many current distributions, e.g., for sets of macro basis functions arising in several domain decomposition methods.

Original language | English |
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Title of host publication | Proceedings of the 9th European Conference on Antennas and Propagation (EUCAP 2015), 12-17 April 2015, Lisbon, Portugal |

Place of Publication | Piscataway |

Publisher | Institute of Electrical and Electronics Engineers |

Pages | 1-4 |

Publication status | Published - 2015 |

Event | 9th European Conference on Antennas and Propagation, EuCAP 2015 - Lisbon, Portugal Duration: 13 May 2015 → 17 May 2015 Conference number: 9 http://www.eucap2015.org/ |

### Conference

Conference | 9th European Conference on Antennas and Propagation, EuCAP 2015 |
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Abbreviated title | EuCAP 2015 |

Country | Portugal |

City | Lisbon |

Period | 13/05/15 → 17/05/15 |

Internet address |

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## Cite this

Maaskant, R., & Lancellotti, V. (2015). Field computations through the ACA algorithm. In

*Proceedings of the 9th European Conference on Antennas and Propagation (EUCAP 2015), 12-17 April 2015, Lisbon, Portugal*(pp. 1-4). Institute of Electrical and Electronics Engineers.