The application of holography to design and measuring of high-directional antennas

Bakhrakh, L. D.; Kurochkin, A. P.

doi:10.1088/0029-4780/1/2/4119

Cited by 3 publications

(3 citation statements)

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“…A disadvantage of this technique is that two terms containing information about the complex plane-wave spectrum are produced. These terms must be separated, in order to obtain the radiation characteristics of the AUT [17][18][19].…”

Section: Ieee Antennas and Propagation Magazine Vol 50 No 5 Octomentioning

confidence: 99%

Synthesized-reference-wave holography for determining antenna radiation characteristics

Schejbal

Kovařík

Cermak

2008

IEEE Antennas Propag. Mag.

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Synthesized-reference-wave holographic techniques offer relatively simple and cost-effective measurement of antenna radiation characteristics and reconstruction of complex aperture fields using near-field intensity (power) pattern measurement. The near field is over-sampled. The phase is obtained indirectly, using the reference signal shifted linearly with the position of the probe. These methods allow utilization of advantages for probe compensation for near-field amplitude and phase measurements for planar and cylindrical scanning, including accuracy analyses. Descriptions are given of holographic nearfield measurements using probe compensation for planar and cylindrical scanning, and numerical simulations. A com-parison of holographic near-field and far-field measurements with and without probe compensation is presented.

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Section: Ieee Antennas and Propagation Magazine Vol 50 No 5 Octomentioning

confidence: 99%

Synthesized-reference-wave holography for determining antenna radiation characteristics

Schejbal

Kovařík

Cermak

2008

IEEE Antennas Propag. Mag.

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“…Однако в силу указного выше требования к условиям размещения в случае антенны большого электрического размера необходимо создание безэховой камеры колоссальных размеров, что является экономически нецелесообразным. Эти, а также другие ограничения измерения ДН в дальней зоне привели к необходимости использования альтернативного подхода в основе которого лежит общая голографическая концепция [2,3], предполагающая полное или частичное восстановление (воссоздание, реконструкция) ДН исследуемой антенны по данным ее ближнего поля [4].…”

Section: Introductionunclassified

Compensation for the influence of the probe in measurements of the near field of the antenna on the plane

Slobodyanenko¹,

Romodin²,

Shebalkova³

2023

Proceedings of the RHEAS

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In the article, to compensate for the probe effect o during near-field measurements on the plane, the theory of plane waves is considered, thanks to which it is established that the correction can be achieved by dividing the spectra of the measured plane waves by the function of the spectral response of the probe when it operates in transmission mode. To determine the spectral characteristics of the probe, it is proposed to use an electrodynamic calibration structure consisting of a three-dimensional model of a reference antenna supplemented by a model of a measuring probe. The ability of the proposed approach to correct measurements made using a dipole probe and the open end of the waveguide is demonstrated.

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“…Ряд актуальных задач в области антенных измерений, проводимых в ближней зоне, в частности восстановление диаграммы направленности (ДН) [1], обнаружение неисправных элементов в антенных решетках [2,3], диагностика рефлекторных антенн [4] и другие, может быть сформулирован по типу обратной задачи [5,6] и решен с помощью соответствующих численных методов. Преимуществом такого подхода является не только его универсальность, но и повышенная точность по сравнению с методами модального разложения [7,8].…”

Section: Introductionunclassified

A projection method for solving discretezed inverse problems for antenna measurements

Slobodyanenko¹

2022

Proceedings of the RHEAS

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In the article, the problems of determining and monitoring antenna parameters, solved using measurements in the near field, are presented in a unified formulation corresponding to the gene-ralized inverse radiation problem in the form of an integral equation of the first kind. Within the framework of the numerical approach to the solution, the equation is discretized, and then the solution is sought approximately as a solution to the normal system of equations. It is shown that an approximate solution to the discretized problem that satisfies the normal system is also a solution to an equation with an orthogonal projector on its right-hand side. On the basis of this formulation, a new method of iterative projections is proposed. The efficiency of the method is demonstrated by the example of solving the problem of reconstructing the radiation pattern of a horn antenna from near-field data calculated for the electrodynamic model of the antenna in the HFSS program. The results of the proposed method are compared with the results of solving the problem by the method of decomposition in singular numbers.

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The application of holography to design and measuring of high-directional antennas

Cited by 3 publications

References 0 publications

Synthesized-reference-wave holography for determining antenna radiation characteristics

Synthesized-reference-wave holography for determining antenna radiation characteristics

Compensation for the influence of the probe in measurements of the near field of the antenna on the plane

A projection method for solving discretezed inverse problems for antenna measurements

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