Control of reflection and mutual coupling losses in maximizing efficiency of dense focal plane arrays

Marianna V. Ivashina*, Mou-Kehn Ng, Per Simon Kildal, Rob Maaskant

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

6 Scopus citations

Abstract

The FOV of a radio telescope fed by a cluster of conventional horns in a one-horn-per-beam configuration is limited to a few beamwidths due to the field distortions which appear for off-axis directions of observation. To overcome this limitation, it has been suggested to use dense Focal Plane Arrays (FPAs) of electrically small elements in which several of these elements contribute to each beam. The primary goal of the paper is to investigate the impact of reflection, coupling and dissipation losses in dense FPAs on the total aperture efficiency of the reflector antenna. We present and discuss results obtained for two dense array realizations: one reference realization of miniaturized open-ended hard waveguides, and another practical FPA of Vivaldi elements.

Original languageEnglish
Title of host publicationProceedings of The European Conference on Antennas and Propagation
Subtitle of host publicationEuCAP 2006
DOIs
StatePublished - 1 Oct 2006
EventEuropean Conference on Antennas and Propagation: EuCAP 2006 - Nice, France
Duration: 6 Nov 200610 Nov 2006

Publication series

NameEuropean Space Agency, (Special Publication) ESA SP
Volume626 SP
ISSN (Print)0379-6566

Conference

ConferenceEuropean Conference on Antennas and Propagation: EuCAP 2006
CountryFrance
CityNice
Period6/11/0610/11/06

Keywords

  • Aperture efficiency
  • Focal plane array
  • Radiation efficiency

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    Ivashina, M. V., Ng, M-K., Kildal, P. S., & Maaskant, R. (2006). Control of reflection and mutual coupling losses in maximizing efficiency of dense focal plane arrays. In Proceedings of The European Conference on Antennas and Propagation: EuCAP 2006 (European Space Agency, (Special Publication) ESA SP; Vol. 626 SP). https://doi.org/10.1109/EUCAP.2006.4585045