Title :
Double-shell modified extended hemispherical lens feed for reflectors in scanning applications
Author :
Fernandes, C.A. ; Lima, E.B. ; Costa, J.R.
Author_Institution :
Inst. de Telecomun., IST, Lisbon, Portugal
Abstract :
This paper presents a new dielectric lens antenna configuration, intended to feed a quasi optical imaging reflector system. The required beam scan stipulates a -3dB beam overlapping after the reflector, with virtual foci placed 2λ apart. The system´s feed is formed by a 5 pixels array, allowing a maximum scanning angle of α = ±0.36° in elevation, while a mechanical rotation of the reflector produces an azimuth scan.
Keywords :
lens antennas; reflector antenna feeds; azimuth scan; beam overlapping; beam scan; dielectric lens antenna configuration; double-shell modified extended hemispherical lens feed; quasi optical imaging reflector system; scanning application; virtual foci; Antenna radiation patterns; Broadband antennas; Feeds; Lenses; Materials; Reflector antennas;
Conference_Titel :
Antennas and Propagation (EUCAP), Proceedings of the 5th European Conference on
Conference_Location :
Rome
Print_ISBN :
978-1-4577-0250-1
