7Search.cctypes of aperture antennatypes of aperture antennaaperture of an antennawhat is an antenna apertureexamples for antenna with circular apertureaperture area of antennaeffective aperture of antennaeffective aperture area of antennadefine effective aperture of antennaaperture meaning in antennacontinuous-aperture antennaaperture antenna radiation patterneffective aperture of antenna formula