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Antenna Radiation Efficiency Estimation From Backscattering Measurement Performed Within Reverberation Chambers

Abstract : This paper presents a contactless measurement method for antenna radiation efficiency estimation within reverberation chambers (RCs). This method does not require to connect any analyzer to the antenna under test (AUT). The AUT radiation efficiency is obtained from the differential measurement of the RC composite Q-factor estimated for two AUT load conditions, namely an open circuit and a 50 Ω load. Remotelycontrolled RF switches are used in order to keep the setup identical for both measurements. The method is experimentally validated in two RCs of different volumes (1 m 3 and 19 m 3) with a wideband patch antenna in the 1.8 GHz to 2.8 GHz frequency range. The estimated efficiency is found to be in very good agreement with the one obtained through a conventional invasive RC measurement technique. This new method is suitable for miniature and buried antenna characterization without access to its port.
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https://hal.archives-ouvertes.fr/hal-03501125
Contributor : Francois Sarrazin Connect in order to contact the contributor
Submitted on : Thursday, December 23, 2021 - 4:14:45 AM
Last modification on : Thursday, September 29, 2022 - 2:21:15 PM

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Wafa Krouka, Francois Sarrazin, Julien de Rosny, Adnane Labdouni, Elodie Richalot. Antenna Radiation Efficiency Estimation From Backscattering Measurement Performed Within Reverberation Chambers. IEEE Transactions on Electromagnetic Compatibility, Institute of Electrical and Electronics Engineers, 2021, ⟨10.1109/TEMC.2021.3129912⟩. ⟨hal-03501125⟩

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