cmaenginsb
Premium,MVM
join:2001-03-19
Palmdale, CA
| reply to Airplane777
Re: Any updates on WiFi Plus antennas lately?
Airplane, the multipolarized antennas of WiFi plus really just combine that of horizontal and vertical polarization. This allows them to be a little more effective in multipath situations and a lot effective at the fattening their wallet situation.
Eliptical and circularlly polarized antennas are rare and expensive for the 2.4 band. Typically these polarizations are effective for over water transmissions because they do not have as much of a problem with reflections from the water's surface.
Polarization does not make a significant difference when going through trees since trees absorb signal and do not reflect it (unless there is water on the leaves). So there isn't enough signal of any polarization to recieve. Yes you can play tricks with 45 degree polarization, but the fact will remain that those solutions will only work on a case by case basis and is not something you can depend on for a business.
The bottomline is you need a signal that is not absorbed as much by the leaves, which means a lower frequency signal ie 900mhz. Since Wifi hasn't operated in that band, the availability of cheap chipsets and radio technology is not there. |
