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In my previous post in this thread I asked about the gain and pattern
of this mesh antenna. Hopefully the inventor will respond when he is able. But being curious and not wanting to wait, I went back to his previous thread about small antennas, and modeled what he posted there -- just to learn what NEC would show for those parameters. The results are given in the link below. The h-plane azimuth gain of this mesh antenna is far from uniform, and its 0.0134 + j85.45 ohm feedpoint impedance is very unfriendly -- though the frequency is centered in Art's stated VSWR bandwidth. Even if this feedpoint Z was perfectly matched there to a 72 ohm balanced transmission line, this mesh antenna would still be a poor radiator compared to a 1/2-wave dipole. http://i62.photobucket.com/albums/h8...sh_Antenna.jpg RF |
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