Memorias de investigación
Communications at congresses:
Multi-Level Spherical Wave Expansion for Fast Near- Field to Far-Field Transformation
Year:2018
Research Areas
  • Engineering,
  • Telecommunications
Information
Abstract
Traditional near-field to far-field transformation algorithms based on modal expansion are unable to deal with arbitrary measurement surfaces. To approach these problems, a matrix inversion method can be used to retrieve the spherical wave expansion (SWE) of the antenna under test (AUT) fields. Modeling the antenna with a set of multiple SWEs centered at arbitrary points over its surface offers a flexible approach for the solution of field transformation problems over arbitrary surfaces. The coefficients of each SWE are obtained using an iterative inversion approach where the matrix-vector products can be replaced by multilevel operators based on recursive aggregations and interpolations of the partial SWE fields, reducing the computational complexity from ?(?) to ? ? ? . The proposed algorithm is tested using synthetic data and measurements showing good scalability and reduced transformation error.
International
Si
Congress
AMTA 2018
960
Place
WILLIAMSBURG, VIRGINIA
Reviewers
Si
ISBN/ISSN
2380-1840
Start Date
04/11/2018
End Date
09/11/2018
From page
1
To page
6
2018 AMTA PROCEEDINGS
Participants
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Grupo de Radiación
  • Centro o Instituto I+D+i: Centro de I+d+i en Procesado de la Información y Telecomunicaciones
  • Departamento: Señales, Sistemas y Radiocomunicaciones