Planar Near-Field Antenna Measurements: Calculation Expressions

Калашников, Вадим Серафимович; Ponomarev, Maxim Yurievich; Platonov, Oleg Yurievich; Shubnikov, Victor Vasilievich; Rivkin, Mark Ilyich; Shatrakov, A Y; Shatrakov, Y G; Zavalishin, O I

doi:10.1007/978-981-33-6436-3_3

Cited by 1 publication

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“…Experimental validation of prototypes is an inherent step in the development of novel antenna geometries. It is normally performed in professional, dedicated laboratories that include anechoic chambers (ACs), compact-range, near-field, or opentest sites [1][2][3][4][5][6][7][8]. Despite high accuracy-resulting from strict control of the propagation environment-high construction cost of the mentioned facilities might be unjustified from the perspective of applications such as training of students, or budget-tight research.…”

Section: Introductionmentioning

confidence: 99%

Multi-taper-based automatic correction of non-anechoic antenna measurements

Dzwonkowski,

Waladi,

Bekasiewicz

2023

Metrologia

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Prototype measurements belong to the key steps in the development of antenna structures. Although accurate validation of their far-field performance can be realized in dedicated facilities, such as anechoic chambers, the high cost of their construction and maintenance might not be justified if the main goal of measurements is to support teaching or low-budget research. Instead, they can be performed in non-anechoic conditions and then refined using appropriate correction algorithms. Unfortunately, the existing post-processing methods suffer from multiple challenges that include manual setup of parameters as well as validation of performance in idealized conditions. In this communication, a multi-taper-based framework for correction of antenna characteristics obtained in non-anechoic environments has been proposed. The algorithm augments one-shot measurements of the structure under test in order to extract the line-of-sight responses while attenuating the interferences pertinent to multi-path propagation and noise from external sources of radiation. The performance of the proposed correction routine has been demonstrated in two test sites using a geometrically small Vivaldi radiator and validated against state-of-the-art techniques from the literature. The uncertainty budget for the measurements performed using the approach amounts to 0.26 dB, which is low given challenging propagation conditions considered for experiments.

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