Reflector spillover loss of an open-ended rectangular and circular waveguide feed

An important and frequently used parameter in the design of a feed for a reflector antenna is the spillover loss. A set of spillover curves is presented for several common feeds, namely circular waveguides with TE/sub 11/ or TE/sub 21/ excitations, rectangular guides for the monopulse application, etc. The difference between two common methods of normalizing the feed input power is also discussed.<
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