Need wireless transmitter circuit diagram

Hi everyone,
I am working on a project the aim of it is to establish a wireless rf link between any 2 serial ports ( PC or PIC ).
I need any circuit diagram for an rf tx that i can send the bits to it, and then it in turn send it to a rf rx.
I don't need to use any module, i need a circuit diagram.

And plz if anyone got any tutorial/guides anything about wireless circuit design tx/rx please send it/url to commeng2004@yahoo.com

Thankx in advance

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