TL;DRAbstract
A review is given on a study of the gain versus antenna temperature optimisation of small, low cost, prime focus parabolic antennas. Especially the choice of feed system plays an important role in this optimisation. From this study it is concluded that a log periodic dipole antenna is a favourable option. Details and numerical results from simulations for this option are presented. These details show that with a proper construction the antenna gain can be considerably higher then presented in previous reports. Furthermore it is shown that an optimal G/T ratio of the investigated antenna system for astronomy applications needs a different f/d ratio for the parabolic reflector compared to a system for terrestrial use. The results from this study are directly applicable to the One Hectare Telescope as is proposed by the SETI Institute.
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A review is given on a study of the gain versus antenna temperature optimisation of small, low cost, prime focus parabolic antennas. Especially the choice of feed system plays an important role in this optimisation. From this study it is concluded that a log periodic dipole antenna is a favourable option. Details and numerical results from simulations for this option are presented. These details show that with a proper construction the antenna gain can be considerably higher then presented in previous reports. Furthermore it is shown that an optimal G/T ratio of the investigated antenna system for astronomy applications needs a different f/d ratio for the parabolic reflector compared to a system for terrestrial use. The results from this study are directly applicable to the One Hectare Telescope as is proposed by the SETI Institute.
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