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Single-Cut Phaseless Near-Field Measurements Using Two Probes

Publicado en:IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION. 72 (2): 1935-1940 - 2024-02-01 72(2), DOI: 10.1109/TAP.2023.3336979

Autores: Varela, Fernando Rodriguez; Maeso, Jorge Calatayud; Sun, Xiaoliang; Iraguen, Belen Galocha

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Resumen

Single-cut phaseless measurements enable the testing of antenna devices with no reference channel by measuring and transforming to far-field individual pattern cuts. This typically requires performing two single-cut measurements at different distances which may be infeasible or too time-consuming in some antenna facilities. As an alternative, this communication proposes the use of a two-probe system connected to the same coherent receiver. The relative phase between probes is exploited to retrieve the absolute phase using a state-of-the-art linearized phase retrieval approach. Simulations and measurements are performed to validate the technique which includes an innovative probe-to-probe calibration method.

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