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Descripción
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.
Internacional	Si
Nombre congreso	41st? ?Annual? ?Meeting? ?and? ?Symposium? ?of? ?the? ?Antenna? ?Measurement? ?Techniques Association (AMTA)
Tipo de participación	960
Lugar del congreso	San Diego, California
Revisores	Si
ISBN o ISSN	978-1-7281-4525-9
DOI
Fecha inicio congreso	06/10/2019
Fecha fin congreso	11/10/2019
Desde la página	1
Hasta la página	6
Título de las actas	2019 Antenna Measurement Techniques Association Symposium (AMTA)

Esta actividad pertenece a memorias de investigación

• Autor: Fernando Rodriguez Varela (UPM)
• Autor: Belen Galocha Iraguen (UPM)
• Autor: Manuel Sierra Castañer (UPM)
• Autor: Javier Fernández Álvarez (Department of Electrical Engineering, Technical University of Denmark Kgs. Lyngby, Denmark)
• Autor: Michael Mattes (Department of Electrical Engineering, Technical University of Denmark Kgs. Lyngby, Denmark)
• Autor: Olav Breinbjerg (Department of Electrical Engineering, Technical University of Denmark Kgs. Lyngby, Denmark)

• 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