Near-Field to Far-Field Transformation for Fast Linear Slide Measurements

Varela, F.; Sanchez, R. Tena; Morales, Manuel José López; Silva, Manuel

doi:10.23919/eucap48036.2020.9136019

Cited by 3 publications

(4 citation statements)

References 5 publications

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“…In the case of a linear array arranged on the

-axis, and assuming separability of the array, the PWS can be denoted as the product of the PWS of the array individual element

and the array factor (

) [ 11 ]:

where the

dependence of the individual element PWS has been neglected since the main contribution on this plane is given by the array factor. With these considerations, Equation (3) can be particularized in Equation (2) to express the

field component over a line parallel to the array at a distance

…”

Section: Sct-mpms Postprocessing Stepmentioning

confidence: 99%

“…This is a reasonable assumption as most of the manufacturing errors affect the feeding network, as compared to the single element which usually has a rather simple quasi-omnidirectional pattern. This is a recurrent topic of single cut measurement techniques so one should be aware of the limitations as discussed in [ 8 , 9 , 10 , 11 ]. As a general guideline, the higher directivity in the array plane, the single cut measurement becomes more accurate, because the array factor dominates the individual element pattern.…”

Section: Potential and Limitations Of The Sct-mpmsmentioning

confidence: 99%

“…The aforementioned SCT’s rely on the separability of the antenna radiated fields, which consists of assuming that the 3-D antenna radiation pattern in

coordinates (

) can be expressed as the product of the radiation patterns of the two principal planes [ 11 ]:

where

and

are the horizontal and vertical cuts respectively, for any of the electric field components radiated by the AUT. Even though this condition does not hold for a general case, it is met for some types of antennas.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Multi-Probe Measurement System Based on Single-Cut Transformation for Fast Testing of Linear Arrays

Varela

Morales

Sanchez

et al. 2021

Sensors

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This paper introduces a near-field measurement system concept for the fast testing of linear arrays suited for mass production scenarios where a high number of nominally identical antennas needs to be measured. The proposed system can compute the radiation pattern, directivity and gain on the array plane, as well as the array complex feeding coefficients in a matter of seconds. The concept is based on a multi-probe antenna array arranged in a line which measures the near field of the antenna under test in its array plane. This linear measurement is postprocessed with state-of-the-art single-cut transformation techniques. To compensate the lack of full 3D information, a previous complete characterization of a “Gold Antenna” is performed. This antenna is nominally identical to the many ones that will be measured with the proposed system. Therefore, the data extracted from this full characterization can be used to complement the postprocessing steps of the single-cut measurements. An X-band 16-probe demonstrator of the proposed system is implemented and introduced in this paper, explaining all the details of its architecture and operation steps. Finally, some measurement results are given to compare the developed demonstrator with traditional anechoic measurements, and show the potential capabilities of the proposed concept to perform fast and reliable measurements.

show abstract

“…In the case of a linear array arranged on the

-axis, and assuming separability of the array, the PWS can be denoted as the product of the PWS of the array individual element

and the array factor (

) [ 11 ]:

where the

field component over a line parallel to the array at a distance

…”

Section: Sct-mpms Postprocessing Stepmentioning

confidence: 99%

Section: Potential and Limitations Of The Sct-mpmsmentioning

confidence: 99%

“…The aforementioned SCT’s rely on the separability of the antenna radiated fields, which consists of assuming that the 3-D antenna radiation pattern in

coordinates (

) can be expressed as the product of the radiation patterns of the two principal planes [ 11 ]:

where

and

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Multi-Probe Measurement System Based on Single-Cut Transformation for Fast Testing of Linear Arrays

Varela

Morales

Sanchez

et al. 2021

Sensors

View full text Add to dashboard Cite

show abstract

“…However, the characterization of the antenna is not a trivial measurement due to the lack of a suitable far-field anechoic chamber. The near-field measurement is the main solution to that problem [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Fast prediction of a high directivity antenna characterization for future wireless communication based on terahertz photonics

Arisesa,

Nur Wijayanto,

Adhi

et al. 2024

J. Phys.: Conf. Ser.

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Fast prediction of high-directivity antenna characterization has been presented. The Cassegrain antenna working at J band frequency has been evaluated using a terahertz (THz) photonic system based on near-field measurement. The generation and detection of THz signal are based on a non-polarimetric electrooptic (EO) frequency down-conversion technique combined with a self-heterodyne system. The synthesis method is introduced to estimate far-field E and H-plane antenna characteristics. The antenna result is calculated using amplitude and phase-synthesized data based on the measured data. A near-field (NF) to far-field (FF) transformation is employed in the antenna radiation pattern. The effect of blocking objects on the antenna (supporting rods and sub-reflector) is discussed. The antenna characteristics of the measured and synthesized data are compared to the ITU F.699 recommendation. The synthesized result agrees with the measured one on the main lobe angle.

show abstract

Advances in fast antenna measurements: use of single cut in near field measurements

Sierra-Castañer,

Maeso,

Rodríguez Varela

et al. 2023

2023 IEEE International Symposium on Antennas and Propagation (ISAP)

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Near-Field to Far-Field Transformation for Fast Linear Slide Measurements

Cited by 3 publications

References 5 publications

Multi-Probe Measurement System Based on Single-Cut Transformation for Fast Testing of Linear Arrays

Multi-Probe Measurement System Based on Single-Cut Transformation for Fast Testing of Linear Arrays

Fast prediction of a high directivity antenna characterization for future wireless communication based on terahertz photonics

Advances in fast antenna measurements: use of single cut in near field measurements

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