Multi-level spherical wave expansion for fast near-field to far-field transformation

Rodríguez Varela, Fernando and Sierra Castañer, Manuel and Galocha Iragüen, Belén (2018). Multi-level spherical wave expansion for fast near-field to far-field transformation. In: "40th​ ​Annual​ ​Meeting​ ​and​ ​Symposium​ ​of​ ​the​ ​Antenna​ ​Measurement​ ​Techniques Association, AMTA 2018", 04/11/2018 - 09/11/2018, Williamsburg, VA, USA. pp. 1-6.

Description

Title: Multi-level spherical wave expansion for fast near-field to far-field transformation
Author/s:
  • Rodríguez Varela, Fernando
  • Sierra Castañer, Manuel
  • Galocha Iragüen, Belén
Item Type: Presentation at Congress or Conference (Article)
Event Title: 40th​ ​Annual​ ​Meeting​ ​and​ ​Symposium​ ​of​ ​the​ ​Antenna​ ​Measurement​ ​Techniques Association, AMTA 2018
Event Dates: 04/11/2018 - 09/11/2018
Event Location: Williamsburg, VA, USA
Title of Book: Proceedings of ​40th​ ​Annual​ ​Meeting​ ​and​ ​Symposium​ ​of​ ​the​ ​Antenna​ ​Measurement​ ​Techniques Association, AMTA 2018
Date: 2018
Subjects:
Faculty: E.T.S.I. Telecomunicación (UPM)
Department: Señales, Sistemas y Radiocomunicaciones
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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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.

Funding Projects

TypeCodeAcronymLeaderTitle
Government of SpainTEC2014-55735-C3-1-RENABLING-5GUnspecifiedUnspecified
Government of SpainTEC2017-85529-C3-1-RFUTURE-RADIOUnspecifiedSistemas y Tecnología Radio para Comunicaciones Terrestres y Espaciales de Gran Capacidad en un Futuro Hiperconectado
Madrid Regional GovernmentS2013/ICE-3000SPADERADAR-CMUnspecifiedSpace debris radar/ radar para detección de basura espacial

More information

Item ID: 55282
DC Identifier: http://oa.upm.es/55282/
OAI Identifier: oai:oa.upm.es:55282
Official URL: https://amta2018.org/
Deposited by: Memoria Investigacion
Deposited on: 16 Sep 2019 16:48
Last Modified: 16 Sep 2019 16:48
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