Theoretical and practical validation tests for a Near-Field to Far-Field transformation algorithm using spherical wave expansion
The use of spherical wave expansion of the solution of the wave equation to predict Far-Field values from data measured in the Near-Field region is a well known technique, typically used to perform antenna measurements in compact anechoic chambers. However, when designing the computing algorithm it...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Universidad del Zulia
2012-07-01
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| Series: | Revista Técnica de la Facultad de Ingeniería |
| Subjects: | |
| Online Access: | https://www.produccioncientificaluz.org/index.php/tecnica/article/view/6824 |
| _version_ | 1811201930657005568 |
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| author | Eduardo Javier Páez Juan Pedro Regina María Daniela Sandoval Paulino Del Pino Ciro Daniel Tremola Barón Marco Azpúrua |
| author_facet | Eduardo Javier Páez Juan Pedro Regina María Daniela Sandoval Paulino Del Pino Ciro Daniel Tremola Barón Marco Azpúrua |
| author_sort | Eduardo Javier Páez |
| collection | DOAJ |
| description | The use of spherical wave expansion of the solution of the wave equation to predict Far-Field values from data measured in the Near-Field region is a well known technique, typically used to perform antenna measurements in compact anechoic chambers. However, when designing the computing algorithm it is fundamental to validate the results and to quantify the numerical error of the method. In this regard, a computer application that samples the electric Near-Field and calculates the values of the electric Far-Field region using spherical wave expansion was developed to measure antenna radiation patterns in the Fresnel zone inside a fully anechoic chamber. In order to validate the code, this paper describes three validation methods: firstly, using the theoretical electric Near-Field values of an infinitesimal dipole as the input to the algorithm to compare the output with the response analytically expected; secondly, using a Far-Field electric field data of a calibrated half wavelength dipole measured in an anechoic chamber and finally, using an electric Near-Field data of a calibrated half wavelength dipole measured in the same chamber. These methods provide simple procedures to calculate the error introduced by the code in different scenarios that should be considered to estimate the measurement uncertainty.
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| first_indexed | 2024-04-12T02:30:15Z |
| format | Article |
| id | doaj.art-b183ad8ba26743e980d6ebce7f4b1707 |
| institution | Directory Open Access Journal |
| issn | 0254-0770 2477-9377 |
| language | English |
| last_indexed | 2024-04-12T02:30:15Z |
| publishDate | 2012-07-01 |
| publisher | Universidad del Zulia |
| record_format | Article |
| series | Revista Técnica de la Facultad de Ingeniería |
| spelling | doaj.art-b183ad8ba26743e980d6ebce7f4b17072022-12-22T03:51:50ZengUniversidad del ZuliaRevista Técnica de la Facultad de Ingeniería0254-07702477-93772012-07-01351Theoretical and practical validation tests for a Near-Field to Far-Field transformation algorithm using spherical wave expansionEduardo Javier Páez0Juan Pedro Regina1María Daniela Sandoval2Paulino Del Pino3Ciro Daniel Tremola4Barón Marco Azpúrua5Campo tecnológico de Sartenejas-VenezuelaUniversidad de Carabobo-VenezuelaUniversidad de Carabobo-VenezuelaUniversidad de Carabobo-VenezuelaCampo tecnológico de Sartenejas-VenezuelaCampo tecnológico de Sartenejas-VenezuelaThe use of spherical wave expansion of the solution of the wave equation to predict Far-Field values from data measured in the Near-Field region is a well known technique, typically used to perform antenna measurements in compact anechoic chambers. However, when designing the computing algorithm it is fundamental to validate the results and to quantify the numerical error of the method. In this regard, a computer application that samples the electric Near-Field and calculates the values of the electric Far-Field region using spherical wave expansion was developed to measure antenna radiation patterns in the Fresnel zone inside a fully anechoic chamber. In order to validate the code, this paper describes three validation methods: firstly, using the theoretical electric Near-Field values of an infinitesimal dipole as the input to the algorithm to compare the output with the response analytically expected; secondly, using a Far-Field electric field data of a calibrated half wavelength dipole measured in an anechoic chamber and finally, using an electric Near-Field data of a calibrated half wavelength dipole measured in the same chamber. These methods provide simple procedures to calculate the error introduced by the code in different scenarios that should be considered to estimate the measurement uncertainty. https://www.produccioncientificaluz.org/index.php/tecnica/article/view/6824near-field far-fieldnumerical transformationspherical wave expansionantenna radiation patternanechoic chamber |
| spellingShingle | Eduardo Javier Páez Juan Pedro Regina María Daniela Sandoval Paulino Del Pino Ciro Daniel Tremola Barón Marco Azpúrua Theoretical and practical validation tests for a Near-Field to Far-Field transformation algorithm using spherical wave expansion Revista Técnica de la Facultad de Ingeniería near-field far-field numerical transformation spherical wave expansion antenna radiation pattern anechoic chamber |
| title | Theoretical and practical validation tests for a Near-Field to Far-Field transformation algorithm using spherical wave expansion |
| title_full | Theoretical and practical validation tests for a Near-Field to Far-Field transformation algorithm using spherical wave expansion |
| title_fullStr | Theoretical and practical validation tests for a Near-Field to Far-Field transformation algorithm using spherical wave expansion |
| title_full_unstemmed | Theoretical and practical validation tests for a Near-Field to Far-Field transformation algorithm using spherical wave expansion |
| title_short | Theoretical and practical validation tests for a Near-Field to Far-Field transformation algorithm using spherical wave expansion |
| title_sort | theoretical and practical validation tests for a near field to far field transformation algorithm using spherical wave expansion |
| topic | near-field far-field numerical transformation spherical wave expansion antenna radiation pattern anechoic chamber |
| url | https://www.produccioncientificaluz.org/index.php/tecnica/article/view/6824 |
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