use of transceiver in wireless communication

[vreg]

Hi,

Are transceivers such as CC2420 absolutely essential for wireless communication or is it possible to just connect an antenna to a microcontroller in order to achieve wireless communication?

What role does the transceiver radio play in communication?

 

[hardik.patel]

I have used CC2500, which can be used to send and receive data using MCU by wirelessly

 

[vreg]

My question is whether transceivers such as the TI CCxxx are a must requirement or is it possible to communicate by connecting an antenna directly to MCU?

 

[FvM]

I presume you are not talking about CPUs with built-in RF transceivers (system-on-chip) like CC2430.

I suggest basic literature about wireless signal transmission, e.g. https://en.wikipedia.org/wiki/Radio

"Wireless communication" should be specified more detailed in terms of frequency, intended range, modulation method.

Very generally speaking, it may be possible to transmit an amplitude or frequency modulated RF signal by a microcontroller, at least up to short wave (SW) band (some then MHz), possibly even VHF band. The receiver part will require an analog RF front end which is not implemented in a usual microcontroller.