* Question
| Briefly describe the basic components of a transmitter? |
* Answer
| (1) Modulator: As its name suggests, this component is capable of modulating a signal onto a carrier, assuming a modulated data bandwidth between 200 kHz and 2 MHz.
(2) Carrier frequency: The transmitter needs to work in a narrow water molecule absorption window – blue to green light range of 460 nm to 480 nm. |
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