Cell phone signal repeater or booster

Using Arduino General Electronics
3

sonnyyu:
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  • Every 6 dBm receiver sensitivity gain will be double the distance.
  • Every 6 dBi antenna gain will be double the distance
  • Every 6 dBm Transmitter power gain will be double the distance.
  • Base on Friis Transmission Equation, for sub Ghz chipset, if we select 300 Mhz v.s 900 Mhz band, the distance will be 3 times more. same thing if we select 300 Mhz v.s. 2400 Mhz, the distance will be 8 times more.

Nothing you can do at receiver sensitivity gain unless you are OEM of handset.

Nothing you can do at Transmitter power gain unless you don't care fine.

Nothing you can do at frequency since it is fixed at various network providers.

However you can do antenna gain, Every 6 dBi antenna gain will be double the distance.

In urban environments, Every 12 dBi antenna gain will be double the distance.