antennas
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antennas [2015/08/25 12:51] mkie [commerical antennas] |
antennas [2015/12/31 20:08] liooo |
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| The board has a PCB antenna for the 2.5 GHz ISM Band, for stand alone operation on the Camp Area. **For other frequencies the use of an external antenna is highly recommended.** | The board has a PCB antenna for the 2.5 GHz ISM Band, for stand alone operation on the Camp Area. **For other frequencies the use of an external antenna is highly recommended.** | ||
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| + | == Internal Antenna | ||
| + | Have a look at [[antennas:internal|Internal Antenna]] for more details on the internal antenna. | ||
| == How to attach an external antenna | == How to attach an external antenna | ||
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| <note important>**When soldering an antenna or SMA connector, a resistor (R315, 0 Ohm) must be turned 90 degrees or replaced with a bridge, connecting the RF line on the left to the SMA connector pads on the right**</note> (then the 0 Ohm resistor will be sitting on the R314 pads; R314 and R315 share the upper left pad). Use 2 soldering irons - so you can easily move the little resistor. | <note important>**When soldering an antenna or SMA connector, a resistor (R315, 0 Ohm) must be turned 90 degrees or replaced with a bridge, connecting the RF line on the left to the SMA connector pads on the right**</note> (then the 0 Ohm resistor will be sitting on the R314 pads; R314 and R315 share the upper left pad). Use 2 soldering irons - so you can easily move the little resistor. | ||
| - | The SMA connector should be an edge-launch SMA connector for a PCB thickness of 1.6mm | + | The SMA connector should be an edge-launch SMA connector for a PCB thickness of 1.6mm (see [[extension:rfkit|RF Kit]]) |
| Resistor turned 90 degrees | Resistor turned 90 degrees | ||
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| - | **WARNING: When soldering, don't connect the unpopulated large pads right below the antenna pads to the pads, this may result in blue smoke!** Best to check right after soldering, we did find a few cases of barely visible connection. | + | **WARNING: When soldering, don't connect the unpopulated large pads right below the antenna pads to the pads, this may result in blue smoke!** Best to check right after soldering, we did find a few cases of barely visible connection.\\ |
| + | {{:antenna_connector_dont_bridge_res_blue_smoke.png?100|}} | ||
| == Building an external antenna | == Building an external antenna | ||
antennas.txt · Last modified: 2015/12/31 20:14 by liooo
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