Probe-corrected near-field to far-field transformation using multiple spherical wave expansions

Rodríguez Varela, Fernando and Galocha Iragüen, Belen and Sierra Castañer, Manuel (2019). Probe-corrected near-field to far-field transformation using multiple spherical wave expansions. In: "13th European Conference on Antennas and Propagation (EuCAP 2019)", 31/03/2019 - 05/04/2019, Cracovia, Polonia. pp. 1-5. https://doi.org/10.1017/S1759078720000136.

Description

Title: Probe-corrected near-field to far-field transformation using multiple spherical wave expansions
Author/s:
  • Rodríguez Varela, Fernando
  • Galocha Iragüen, Belen
  • Sierra Castañer, Manuel
Item Type: Presentation at Congress or Conference (Article)
Event Title: 13th European Conference on Antennas and Propagation (EuCAP 2019)
Event Dates: 31/03/2019 - 05/04/2019
Event Location: Cracovia, Polonia
Title of Book: Proceedings of 13th European Conference on Antennas and Propagation (EuCAP 2019)
Date: April 2019
Subjects:
Freetext Keywords: near-field to far-field transformation; spherical wave expansion; near-field measurements; probe correction
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

Near-field to far-field transformations constitute a powerful antenna characterization technique for near-field measurement scenarios. In this paper a near-field to far-field transformation technique based on multiple spherical wave expansions is presented. Thanks to its iterative matrix inversion nature, the approach performs the transformation of fields measured on arbitrary surfaces. Also, irregular sampling schemes can be incorporated. The proposed algorithm is based on modelling the antenna fields with not one, but several spherical wave expansions distributed over its geometry. Due to the high number of spherical wave expansions, their truncation number can be arbitrarily reduced. Working with expansions of low order allows to incorporate the probe correction in the transformation in a very simple way, accepting any type of probe and orientation. Only the probe far-field pattern is used, thus working with its full spherical wave expansion is avoided. The algorithm is validated using simulated field data as well as measurements of real antennas.

Funding Projects

TypeCodeAcronymLeaderTitle
Government of SpainTEC2014-55735-C3-1-RENABLING-5GUnspecifiedEnabling innovative radio technologies for 5G networks
Government of SpainTEC2017-85529-C3-1-RFUTURE-RADIOUnspecifiedRadio systems and technologies for high capacity terrestrial and satellite communications in an hyperconnected work
Madrid Regional GovernmentS2013/ICE-3000SPADERADARUnspecifiedSpace Debris Radar
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