Electromagnetic Analysis and Experimental Validation of the LOFAR Radiation Patterns
Joint Authors
Di Ninni, Paola
Bolli, Pietro
Paonessa, Fabio
Pupillo, Giuseppe
Virone, Giuseppe
Wijnholds, Stefan J.
Source
International Journal of Antennas and Propagation
Issue
Vol. 2019, Issue 2019 (31 Dec. 2019), pp.1-12, 12 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2019-01-27
Country of Publication
Egypt
No. of Pages
12
Main Subjects
Abstract EN
Low-frequency (<300 MHz) aperture array systems are one of the new trends in modern radio astronomy.
Among the challenges they pose, the instrumental calibration is a key aspect requiring an accurate and reliable model of each element of such electrically large array.
A full-wave electromagnetic analysis has been carried out for the lower frequency (30–80 MHz) array of the low frequency array (LOFAR) radio telescope taking into account the presence of soil ground, the mutual coupling between the antennas and the relevant receiver impedance loading effects.
The impact of mutual coupling effects on the embedded element and array patterns is assessed for two subarray configurations with different degrees of sparseness.
A simplistic array factor approach has been implemented as well to determine the accuracy in the antenna pattern evaluation with respect to the full-wave approach.
Finally, results from an experimental campaign conducted by means of a micro hexacopter system show the reliability of the developed array numerical model.
American Psychological Association (APA)
Di Ninni, Paola& Bolli, Pietro& Paonessa, Fabio& Pupillo, Giuseppe& Virone, Giuseppe& Wijnholds, Stefan J.. 2019. Electromagnetic Analysis and Experimental Validation of the LOFAR Radiation Patterns. International Journal of Antennas and Propagation،Vol. 2019, no. 2019, pp.1-12.
https://search.emarefa.net/detail/BIM-1158197
Modern Language Association (MLA)
Di Ninni, Paola…[et al.]. Electromagnetic Analysis and Experimental Validation of the LOFAR Radiation Patterns. International Journal of Antennas and Propagation No. 2019 (2019), pp.1-12.
https://search.emarefa.net/detail/BIM-1158197
American Medical Association (AMA)
Di Ninni, Paola& Bolli, Pietro& Paonessa, Fabio& Pupillo, Giuseppe& Virone, Giuseppe& Wijnholds, Stefan J.. Electromagnetic Analysis and Experimental Validation of the LOFAR Radiation Patterns. International Journal of Antennas and Propagation. 2019. Vol. 2019, no. 2019, pp.1-12.
https://search.emarefa.net/detail/BIM-1158197
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1158197