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The list of directional antennas is getting rather large. A classification often used in antenna engineering is "aperture antennas", in which the radiating structure is defined by an aperture. This includes horn antennas, parabolic antennas, slot antennas, I believe phased arrays, and several other types. What about splitting these antennas off into their own category? --ChetvornoTALK 05:40, 23 December 2010 (UTC)[reply]
Yes, this classification is pants. All antennae have some sort of directivity, except for the utterly theoretical isotropic radiator. So the first category is going to have a member of one forever, and the last one is going to continue to grow without limit. Aperture antennas is a good category. We could also have monopole antennas and their derivatives split from dipoles and multi-element antennae. In other words, I favour splitting by form rather than radiation pattern or gain. If there were some more splits of categories along the lines of the latter, it would start to get very difficult to decide where some antennae belong - the gain of a Yagi, for instance, depends on the number of elements. SpinningSpark 12:50, 30 October 2015 (UTC)[reply]
