J.G. Holmes
Abstract
A paraboloid inner surface and a co-paraboloid outer surface can be substantially free from aberrations in forming a parallel beam. A simple approximation for the true co-paraboloid is given, and extended to co-ellipsoids.
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A paraboloid inner surface and a co-paraboloid outer surface can be substantially free from aberrations in forming a parallel beam. A simple approximation for the true co-paraboloid is given, and extended to co-ellipsoids.
Key concepts: Paraboloid, Fan-beam antenna, Ellipsoid, Optics, Reflector (photography), Surface (topology), Offset dish antenna, Physics