Combination of spherical and planar scanning for phaseless near-field antenna measurements

Rodríguez Varela, Fernando and Galocha Iragüen, Belen and Sierra Castañer, Manuel and Fernández Álvarez, Javier and Mattes, Michael and Breinbjerg, Olav (2019). Combination of spherical and planar scanning for phaseless near-field antenna measurements. In: "Antenna Measurement Techniques Association Symposium (AMTA) 2019", 06/10/2019 - 11/10/2019, San Diego, California, USA. ISBN 978-1-7281-4525-9. pp. 1-6. https://doi.org/10.23919/AMTAP.2019.8906466.

Description

Title: Combination of spherical and planar scanning for phaseless near-field antenna measurements
Author/s:
  • Rodríguez Varela, Fernando
  • Galocha Iragüen, Belen
  • Sierra Castañer, Manuel
  • Fernández Álvarez, Javier
  • Mattes, Michael
  • Breinbjerg, Olav
Item Type: Presentation at Congress or Conference (Article)
Event Title: Antenna Measurement Techniques Association Symposium (AMTA) 2019
Event Dates: 06/10/2019 - 11/10/2019
Event Location: San Diego, California, USA
Title of Book: Proceedings of Antenna Measurement Techniques Association Symposium (AMTA) 2019
Date: November 2019
ISBN: 978-1-7281-4525-9
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

The two scans phaseless technique is a well-known procedure for the characterization of antennas on near-field ranges without need of measuring the phase. Amplitude information over two surfaces compensates for the lack of phase reference. In this paper we propose the combination of spherical and planar surfaces for the application of the two scans technique, together with the application of Wirtinger Flow, a state-of-the art phase retrieval algorithm with high convergence guarantees. The use of different types of surface adds additional information about the field’s degrees of freedom, allowing for smaller separation between acquisition surfaces as compared with the 2-sphere techniques. In addition, an initial estimation for the phase is not required. The phase retrieval process is formulated in terms of the Spherical Wave Expansion (SWE) of the antenna under test. The SWE-to-PWE (Plane Wave Expansion) is utilized in order to process the amplitude field on the planar surface. Results for simulated and measured near-field data are shown to demonstrate the potential capabilities of the proposed technique.

Funding Projects

TypeCodeAcronymLeaderTitle
Government of SpainTEC2017-85529-C3-1-RFUTURE-RADIOUnspecifiedRadio systems and technologies for high capacity terrestrial and satellite communications in an hyperconnected work

More information

Item ID: 64812
DC Identifier: http://oa.upm.es/64812/
OAI Identifier: oai:oa.upm.es:64812
DOI: 10.23919/AMTAP.2019.8906466
Official URL: https://ieeexplore.ieee.org/document/8906466
Deposited by: Memoria Investigacion
Deposited on: 27 Mar 2021 10:48
Last Modified: 27 Mar 2021 10:48
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