Title :

Freehand system for antenna diagnosis based on amplitude-only data

Author(s) :

Alvarez-Narciandi, Guillermo [Auteur]
Universidad de Oviedo = University of Oviedo
Laviada, Jaime [Auteur]
Universidad de Oviedo = University of Oviedo
Alvarez-Lopez, Yuri [Auteur]
Universidad de Oviedo = University of Oviedo
Ducournau, Guillaume [Auteur]
Photonique THz - IEMN [PHOTONIQUE THZ - IEMN]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Luxey, Cyril [Auteur]
Laboratoire de Polytech Nice-Sophia [Polytech'Lab]
Belem-Gonçalves, Cybelle [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Gianesello, Frédéric [Auteur]
STMicroelectronics [Crolles] [ST-CROLLES]
Nachabe, Nour [Auteur]
Laboratoire de Polytech Nice-Sophia [Polytech'Lab]
del Rio, Carlos [Auteur]
Universidad Pública de Navarra [Espagne] = Public University of Navarra [UPNA]
Las-Heras, Fernando [Auteur]
Universidad de Oviedo = University of Oviedo

Journal title :

IEEE Transactions on Antennas and Propagation

Pages :

4988-4998

Publisher :

Institute of Electrical and Electronics Engineers

Publication date :

2021-08

ISSN :

0018-926X

English keyword(s) :

Amplitude-only
antenna diagnosis
antenna measurements
equivalent currents
freehand
millimeter-wave (mm-wave) antenna
phaseless
power-meter
sources reconstruction method

HAL domain(s) :

Sciences de l'ingénieur [physics]

English abstract : [en]

This article presents a portable system for freehand antenna diagnosis and characterization based on amplitude-only data. The amplitude-only samples are acquired by moving a handheld probe, which is tracked by a motion ...
Show more >This article presents a portable system for freehand antenna diagnosis and characterization based on amplitude-only data. The amplitude-only samples are acquired by moving a handheld probe, which is tracked by a motion capture system, in front of the antenna under test (AUT) aperture. The acquired measurements are processed using the phaseless sources reconstruction method to compute an equivalent current distribution on the AUT aperture. Finally, the radiation pattern of the AUT can be obtained by evaluating the corresponding radiation integrals. Unlike previous work, the use of amplitude-only data avoids the need of a phase reference, paving the way to the diagnosis and characterization of antennas under operational conditions. This fact, together with the handheld capabilities, makes the system very convenient for measurements of already deployed and onboard antennas. Moreover, these amplitude-only acquisitions also simplify the required hardware. The system has been validated through measurements in a wide frequency range from Ka-band up to 300 GHz. Despite that one cannot expect the same degree of accuracy that can be achieved under laboratory conditions (including an anechoic environment and highly accurate positioners), the system shows excellent capabilities to detect malfunctions, such as wrong amplitude/phase distributions, as well as a fair estimation of the far field.Show less >

Language :

Anglais

Popular science :

Non

Collections :

• Institut d'Électronique, de Microélectronique et de Nanotechnologie (IEMN) - UMR 8520

Source :

Harvested from HAL