A radio frequency antenna system and high-speed digital data link are disclosed to, among other things, reduce electromagnetic interference at relatively high data rates while reducing the manufacturing complexities associated with conventional data links. This lowers the power consumption of the improved matched filter system and increases the speed at which the system despreads the PN code from the spread spectrum signal. Accordingly, it is possible to simplify a frame generation process performed at the transmission end, and reduce transmission power for the phase reference pilot signal.