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On Minimum Range for Radiation Patterns

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1 Author(s)
Rhodes, D.R. ; Cornell Aeronautical Lab., Buffalo, N.Y., formerly with Dept. of Elec. Eng., Ohio State University, Columbus, Ohio

It is shown that the 2D2/¿ antenna criterion ensures a phase variation less than ¿/8 and an amplitude variation less than 10 per cent over D when using a paraboloidal or optimum horn antenna for illumination, providing its aperture dimensions do not exceed D. The pattern of a uniform line antenna illuminated by such a paraboloid is shown to be essentially the same as its conventional pattern (point source illumination). It is also shown that the appropriate criterion for back scattering patterns is 4D2/¿. earch Foundation.

Published in:

Proceedings of the IRE  (Volume:42 ,  Issue: 9 )