Phased Array Feed

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Phased Array Feed

This is a Phased Array Feed (PAF) for the Green Bank Telescope. It is put at the prime focus of the GBT. Each of the flanges is a crossed dipole antenna. There are 19 of these crossed dipoles. Their signals are sent to a digital signal processor which combines the signals from the 19 elements to form a single radio beam.

Credit: B. Saxton, NRAO/AUI/NSF

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Phased Array Feed

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