How to create beam-forming smart antennas using FPGAS

 If you could squeeze two or three times more cellular telephone conversations into the same amount of bandwidth, how much would that be worth? To most wireless companies, the answer is, millions of dollars. The art and science of "beam forming" allows normal cellular towers to aim their radio waves at the right user instead of off in all directions. The result is more efficient use of bandwidth and more happy customers. In this article, FPGA design experts explain how beam forming works and how to implement it in standard FPGA chips.