antenna gain explained

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HexBeam Antenna Explained - A hexagonal beam is a form of the Yagi antenna which is based on parasitic principles developed early in the last century in Japan for achieving gain in one direction.How HexBeam antennas works. A hexagonal beam operates exactly like Yagi antenna, but instead of a driven element that is straight like a dipole, it is a wire bent into the shape of the letter M.
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J-Pole and Expanded Super J-Pole - The standard J-Pole antenna is a end fed 1/2 wavelength antenna, in this article is explained also how to build an expanded Super J Pole that provides about 4.5 dbd gain. These antennas can be built from EMT electric conduit pipe
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The gain of aerials: the myths explained - In the long history of beam aerials there has persistently existed the claim that certain types of aerials perform better than yagis.
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Antenna directivity and gain - Antenna gain and directivity explained in this article at radio electronics antenna pages
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