Discussion
What is the chief advantage of a reflectarray over a conventional reflector?
Answer: A
Being a flat panel, it stows compactly for launch, can be made in folding sections and can follow a curved surface, which a rigid paraboloid cannot. It still has a feed and still spills power past its edge. Bandwidth is in fact its weakness, since the phase correction is exact only near the design frequency, exactly as with a zoned lens. Mechanical form rather than electrical performance is what recommends it, which is a perfectly respectable reason to choose a technology.
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