Beamwidth variation with aperture diameter of the choked waveguide feed antenna |
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| Authors: | Keen K.M. |
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| Affiliation: | RF Technology Centre at ERA, Leatherhead, UK; |
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| Abstract: | The choked waveguide feed antenna, which exhibits E- and H-plane radiation pattern equality, good pattern symmetry and low cross polarisation, is an excellent feed for symmetrical reflector antennas with f/D ratios in the range of about 0.3 to 0.4. An experimental programme has been carried out to determine the variation of beamwidth with feed aperture diameter, and the results are presented here. |
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