Portable Freehand System for Real-Time Antenna Diagnosis and Characterization
This article presents an agile system for antenna diagnosis. The system is operated by means of freehand movements of the probe antenna avoiding the need of bulky positioners and thus providing portability to the system. For that purpose, the probe antenna position, which is required by the antenna...
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| Veröffentlicht in: | IEEE transactions on antennas and propagation 2020-07, Vol.68 (7), p.5636-5645 |
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| container_title | IEEE transactions on antennas and propagation |
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| creator | Alvarez-Narciandi, Guillermo Laviada, Jaime Alvarez-Lopez, Yuri Las-Heras, Fernando |
| description | This article presents an agile system for antenna diagnosis. The system is operated by means of freehand movements of the probe antenna avoiding the need of bulky positioners and thus providing portability to the system. For that purpose, the probe antenna position, which is required by the antenna diagnosis algorithm, is retrieved by means of an affordable and quickly deployable motion capture system. The probe position and the acquired field are used to characterize the antenna under test by computing an equivalent currents distribution on the antenna aperture and its far-field pattern in real-time. To achieve that, an ad hoc workflow is designed including a method for spatially balancing the acquired field samples. Although the system is not intended to provide an accuracy comparable to the one achieved by anechoic chamber facilities, it opens a new horizon of possibilities for in situ agile characterization of antennas enabling the detection of faulty elements or radiation pattern deviations. Results at Ku - and Ka -bands, supported by attached multimedia material, are presented to illustrate the capabilities of the system. |
| doi_str_mv | 10.1109/TAP.2020.2978936 |
| format | Article |
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The system is operated by means of freehand movements of the probe antenna avoiding the need of bulky positioners and thus providing portability to the system. For that purpose, the probe antenna position, which is required by the antenna diagnosis algorithm, is retrieved by means of an affordable and quickly deployable motion capture system. The probe position and the acquired field are used to characterize the antenna under test by computing an equivalent currents distribution on the antenna aperture and its far-field pattern in real-time. To achieve that, an ad hoc workflow is designed including a method for spatially balancing the acquired field samples. Although the system is not intended to provide an accuracy comparable to the one achieved by anechoic chamber facilities, it opens a new horizon of possibilities for in situ agile characterization of antennas enabling the detection of faulty elements or radiation pattern deviations. 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The system is operated by means of freehand movements of the probe antenna avoiding the need of bulky positioners and thus providing portability to the system. For that purpose, the probe antenna position, which is required by the antenna diagnosis algorithm, is retrieved by means of an affordable and quickly deployable motion capture system. The probe position and the acquired field are used to characterize the antenna under test by computing an equivalent currents distribution on the antenna aperture and its far-field pattern in real-time. To achieve that, an ad hoc workflow is designed including a method for spatially balancing the acquired field samples. Although the system is not intended to provide an accuracy comparable to the one achieved by anechoic chamber facilities, it opens a new horizon of possibilities for in situ agile characterization of antennas enabling the detection of faulty elements or radiation pattern deviations. Results at Ku - and Ka -bands, supported by attached multimedia material, are presented to illustrate the capabilities of the system.</description><subject>Algorithms</subject><subject>Anechoic chambers</subject><subject>Antenna diagnosis</subject><subject>Antenna measurements</subject><subject>Antenna radiation patterns</subject><subject>Antennas</subject><subject>Aperture antennas</subject><subject>Apertures</subject><subject>Current distribution</subject><subject>Diagnosis</subject><subject>equivalent currents</subject><subject>Far fields</subject><subject>freehand</subject><subject>mm-wave antenna</subject><subject>Motion capture</subject><subject>Multimedia</subject><subject>Probes</subject><subject>Real time</subject><subject>Real-time systems</subject><subject>Reconstruction algorithms</subject><subject>sources reconstruction method (SRM)</subject><subject>Workflow</subject><issn>0018-926X</issn><issn>1558-2221</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2020</creationdate><recordtype>article</recordtype><sourceid>RIE</sourceid><recordid>eNo9kE1LAzEQhoMoWKt3wUvA89bJx3aTY6lWhYpFK3gL2ezEbml3a5Ie2l_vlhZPwwzPO8M8hNwyGDAG-mE-mg04cBhwXSgthmekx_JcZZxzdk56AExlmg-_L8lVjMuulUrKHnmbtSHZcoV0EhAXtqno5y4mXFPfBvqBdpXN6zXSUZOwaSx9rO1P08Y60gM6XthgXcJQ722q2-aaXHi7inhzqn3yNXmaj1-y6fvz63g0zZwQImVSlKUTKheqKLn3nAGW0rnSgQMtqkIjU3KYaym0l66ogHUjzCGvXInSo-iT--PeTWh_txiTWbbb0HQnDZecQ_ebgo6CI-VCG2NAbzahXtuwMwzMQZrppJmDNHOS1kXujpEaEf9xDULmTIk_6kpoBA</recordid><startdate>20200701</startdate><enddate>20200701</enddate><creator>Alvarez-Narciandi, Guillermo</creator><creator>Laviada, Jaime</creator><creator>Alvarez-Lopez, Yuri</creator><creator>Las-Heras, Fernando</creator><general>IEEE</general><general>The Institute of Electrical and Electronics Engineers, Inc. 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| subjects | Algorithms Anechoic chambers Antenna diagnosis Antenna measurements Antenna radiation patterns Antennas Aperture antennas Apertures Current distribution Diagnosis equivalent currents Far fields freehand mm-wave antenna Motion capture Multimedia Probes Real time Real-time systems Reconstruction algorithms sources reconstruction method (SRM) Workflow |
| title | Portable Freehand System for Real-Time Antenna Diagnosis and Characterization |
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