Patent ID: 8295333

Claim:
A method for signal processing, the method comprising: on a first printed circuit board, said first printed circuit board comprising a repeater operable to communicate with a transmitter and/or receiver on each of a plurality of second printed circuit boards; receiving, at said first printed circuit board, a signal from a first of said plurality of second printed circuit boards; determining, by said first printed circuit board, which one or more of said second printed circuit boards said received signal is destined for; transmitting, by said first printed circuit board, a repeated signal for each of said one or more of said second printed circuit boards that said signal is destined for; receiving, by said first printed circuit board, a message from each of said one or more of said second printed circuit boards via a control connection between said first printed circuit board and each of said one or more of said second printed circuit boards; wherein: each said repeated signal carries the same information as said first signal; each said repeated signal is frequency shifted with respect to said first signal; and each said repeated signal comprises one or more signal components, and wherein said first printed circuit board adjusts a phase and/or amplitude of each of said one or more signal components to control a directivity of each said repeated signal based on each said message received via said control connection corresponding to each of said one or more of said second printed circuit boards.