Cable antenna » History » Version 5
dexter, 02/19/2016 10:48 PM
1 | 1 | dexter | |
---|---|---|---|
2 | == The Cable Antenna == |
||
3 | |||
4 | The antenna that has been shipped with the BS11 is a so called sector-antenna. That means it is designed not to cover only a part of the area around the BTS. And it has a gain. The gain comes from the signal that is bundeled and sent into the sector. The advantage: You can use several BTSs to cover a cell (Each cell sector has its own BTS ==> More calls) and you can cover more distance with less power. |
||
5 | |||
6 | 5 | dexter | What is good if you want to run a mobile network is bad for experimental proposes. For us an antenna that covers the area around the BTS with a nondirected signal (like a donut) is perfect - so lets build one. |
7 | 1 | dexter | |
8 | 5 | dexter | == Step by step == |
9 | [[Image(cableAntenna_materials.JPG,width=300px)]] |
||
10 | 1 | dexter | |
11 | 5 | dexter | The antenna is made out of a pice of old coax-cable (about 15-20cm length) and a BNC connector. (You can use the endigns of an old networkcable too). To make it all looking good we add a pice of shrink tubing at the end. |
12 | 1 | dexter | |
13 | 5 | dexter | [[Image(cableAntenna_bncplugconnected.JPG,width=300px)]] |
14 | |||
15 | The first task to do is to connect the connector to the cable. I used a solderable BNC-Connector. |