This shows you the differences between two versions of the page.
Both sides previous revision Previous revision Next revision | Previous revision | ||
antennas [2015/11/20 22:24] schneider [Antennas] |
antennas [2015/12/31 20:14] (current) liooo [Temporary] |
||
---|---|---|---|
Line 3: | Line 3: | ||
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.** | ||
+ | == Internal Antenna | ||
Have a look at [[antennas:internal|Internal Antenna]] for more details on the internal antenna. | Have a look at [[antennas:internal|Internal Antenna]] for more details on the internal antenna. | ||
Line 9: | Line 10: | ||
=== Temporary | === Temporary | ||
To improve radio reception a little bit you can just press a thumb against the upper right corner and be a human antenna. | To improve radio reception a little bit you can just press a thumb against the upper right corner and be a human antenna. | ||
- | The most simple real external antenna is a single-wire copper cable (others may also work). This can be pressed against an edge of the little black resistor on the top right corner. | + | The most simple real external antenna is a single-wire copper cable (others may also work). This can be pressed against an edge of the little black resistor on the top right corner:\\ |
{{:rad1o_7.png?100|}} | {{:rad1o_7.png?100|}} | ||
Line 17: | Line 18: | ||
The SMA connector should be an edge-launch SMA connector for a PCB thickness of 1.6mm (see [[extension:rfkit|RF Kit]]) | 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:\\ |
{{:rad1o_10.jpg?100|}} | {{:rad1o_10.jpg?100|}} | ||
- | Alternative: Add bridge, remove resistor | + | Alternative: Add bridge, remove resistor:\\ |
{{:rad1o_11.jpg?100|}} | {{:rad1o_11.jpg?100|}} | ||
- | Using a soldered copper cable as antenna: | + | Using a soldered copper cable as antenna:\\ |
{{:rad1o_9.jpg?100|}} | {{:rad1o_9.jpg?100|}} | ||
- | Adding an SMA connector so that you can connect an external antenna for your specific needs. | + | Adding an SMA connector so that you can connect an external antenna for your specific needs:\\ |
{{:rad1o_12.jpg?100|}} | {{:rad1o_12.jpg?100|}} | ||
- | **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 |