Best antenna to go through triple-pane glass
Hi: Looking for recommendation on the best antenna to go through 3
panes of glass. Here is my configuration: WISP one mile LOS High Gain Antenna 2 ft pigtail Netgear Bridge 5 ft cat 5 cable Netgear AP XP laptop w/SMC universal wifi card No option to put outside the building. Antenna must be inside building. Tried going through wall but worse than going through the windows. Thanks |
Glass only starts acting as a lossy medium when over 8 Ghz.
"Chuck Daniels" wrote in message om... Hi: Looking for recommendation on the best antenna to go through 3 panes of glass. Here is my configuration: WISP one mile LOS High Gain Antenna 2 ft pigtail Netgear Bridge 5 ft cat 5 cable Netgear AP XP laptop w/SMC universal wifi card No option to put outside the building. Antenna must be inside building. Tried going through wall but worse than going through the windows. Thanks --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.574 / Virus Database: 364 - Release Date: 29/01/2004 |
"LinkTech"
Glass only starts acting as a lossy medium when over 8 Ghz. Depends how far over 8 GHz... Most common glass is reasonably low loss in the 400 to 700 THz (terahertz, 10^12) 'band'. ;-) More seriously, 'Low-E' (low emissivity) glass has a thin metal coating that might make the glass less transparent at RF. I'm not sure about the magnitude of the effect at RF. It certainly works at IR. |
The metal coating is good enough to keep my cell phone from working though I
can see the cell tower from my office window about 1/4 mile away .. "J. Harvey" wrote in message om... "LinkTech" Glass only starts acting as a lossy medium when over 8 Ghz. Depends how far over 8 GHz... Most common glass is reasonably low loss in the 400 to 700 THz (terahertz, 10^12) 'band'. ;-) More seriously, 'Low-E' (low emissivity) glass has a thin metal coating that might make the glass less transparent at RF. I'm not sure about the magnitude of the effect at RF. It certainly works at IR. |
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