They all using frequencies to transmit signals so how RF is transmitting analog and Bluetooth and Wifi digital signals ? And why transmitting analog signals over long distances is easier than bluetooth ?
In: Technology
I have a limited understand –
Higher frequency light loses it’s intensity quicker than low frequency light. For this reason, IR will go much further than either of the others, because it is by far the lowest frequency. Also consumes less energy to produce.
Bluetooth and WiFi both transmit a lot of data. Because we store our data digitally, these signals are digital, meaning that the signal is interpreted to be in either a “high” state or a “low” state.
IR being analog does not have a “high” and “low” state but instead just provides the intensity (amplitude) of the signal. This is fine for devices that don’t need to be told much other than “perform action x” because all the electronics are in the device. The device just needs to get the go-ahead signal to start up.
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