Discussion
What is a compact antenna test range?
Answer: D
A compact range uses a large offset reflector, with a rolled or serrated edge, to collimate the feed radiation into a plane wave across a quiet zone only metres from the reflector. That gives far field conditions indoors. Portability, deliberate near field measurement and scale modelling are all different ideas, though scale modelling is a legitimate technique in its own right. Substituting optics for distance is the essential trick.
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