Unfortunately, not every place I want to put a sensor has great cell coverage. I am interested in testing (and, yes, perhaps having to certify) an external antenna and I thought a directional antenna would make sense. In looking at the options, it seems there are some requirements I need to understand. They are (with my assumptions - please correct if needed):
- Passive Antenna
- Need to cover the 3G and LTE frequencies - 700-2700 MHz
- Some connector that can be converted to u.FL with a cable (SMA or N Male)
- Impedance - 50 or 75 ohms? Which does the Electron require?
- Gain - Claim to be +10 dB - is this reasonable?
I found a reasonably priced external antenna here:
Wilson Electronics Outdoor Directional Antenna
Am I on the right track? Are there other considerations?