How can I make a simple wireless device which transmits n receives over a known freq range, over say, a few cms. Suppose the antenna is just a wire, what are the stages I need to append before transmitting and the stages required at the receiving end in order to obtain decent selectivity.
The data transmitted may be assumes digital data, hence the consequent allowances can be made.
The transmitter is more or less the same with most. U may or may not include a modulation scheme. It is the receiver that I'm even more concerned.