A novel approach is proposed for compensating the scan loss in wide-angular scanning array antennas due to the pattern falloff of physical radiators. The method is based on replacing elements in (linear) arrays with sub arrays with enhanced radiation intensity at large angles. This strategy is best applicable in the case of sparse arrays that intrinsically provide the space for accommodating sub arrays. An optimised linear sub array, with 5 dB radiation intensity enhancement at 60° is designed. This sub array is then incorporated in linear array antennas with (approximately) 50% thinning factors. An up to 1.2 dB improvement of the maximum directivity at 60° beam scanning is obtained. The obtained results allow conjecturing that a similar strategy, when applied to planar arrays, will lead to an even more significant scan-loss reduction, this yielding a substantial performance enhancement for wide-angular scanning radar array antennas.

Original languageEnglish
Title of host publication2016 Loughborough Antennas and Propagation Conference, LAPC 2016
Place of PublicationPiscataway, NJ
PublisherIEEE
Pages1-5
Number of pages5
ISBN (Electronic)978-1-5090-0783-7
DOIs
Publication statusPublished - 2017
Event2016 Loughborough Antennas and Propagation Conference - Burleigh Court International Conference Centre, Loughborough, United Kingdom
Duration: 14 Nov 201615 Nov 2016

Conference

Conference2016 Loughborough Antennas and Propagation Conference
CountryUnited Kingdom
CityLoughborough
Period14/11/1615/11/16

    Research areas

  • Antenna radiation patterns, Radar antennas, Linear antenna arrays, Planar arrays, Measurement, Radar applications

ID: 44921726