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Antennas : Horn

• What is Horn Antenna - Horn Antenna - The energy of the beam when slowly transform into radiation, the losses are reduced and the focussing of the beam improves. A Horn antenna may be considered as a flared out wave guide, by which the directivity is improved and the diffraction is reduced. One of the first horn antennas was constructed in 1897 by Bengali-Indian radio researcher Jagadish Chandra Bose in his pioneering experiments with microwaves. The modern horn antenna was invented independently in 1938 by Wilmer Barrow and G. C. Southworth. This Horn model antenna is suitable employed in the UHF or SHF radio bands. Making this horn model antenna it will be easy for a beginner to make if it works in the 10GHz frequency, because small dimensions so it is not so difficult and also offers gain up to 25dBi.
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• NVIS antenna design - Theory, Modeling, and Practical Applications By W5JCK, presentation in PDF File
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• The CJU Sat Antenna - KD8KSB realization of the CJU satellite antenna that allow similar performance to the arrow antennas.
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• Antennas 101 - Dipoles, Doublets and Verticals by Rob May NV5E
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• Gieskieng Antenna - This antenna is a result of experimental work of D. H. Gieskieng, W0FK, a narrow monoband antenna, that needs only two support poles and require limited space, needs only 61 ft. for 160 meters band.
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• Portable Rotation - Portable Rotation manufacturer of portable antenna rotor and support systems including AZ/EL portatble rotor system, AZ/EL antenna position sensors, mounting kits for arrow antennas
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• Arrow Antennas - Hand held portable, 6 meters and satellite antennas
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