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The model of the reflector antenna system with focal plane array, low-noiseamplifier and beamformer is developed in the work. The beamformer strategy issuggested to reduce the receiving sensitivity ripple inside field of view ofthe telescope, while the sensitivity itself drops slightly (less than 10%). Thesystem APERTIF (which is currently under development in Netherlands InstituteFor Radioastronomy, ASTRON) has been analyzed using developed model, andnumerical results are presented. The obtained numerical results have beenverified experimentally in anechoic chamber as well as on one of the dishes ofthe Westerbork Synthesis Radio Telescope (all measurements have been done inASTRON).

Modeling and optimization of the antenna system with focal plane array for the new generation radio telescopes with wide field of view