A system comprising an radio frequency (RF) signal input; a plurality of time-skewed, undersampled analog to digital converters (ADCs); a plurality of complex finite input response (FIR) filters in parallel, wherein each complex FIR filter receives the output beam and/or band provided by the plurality...http://www.google.ca/patents/US7705761?utm_source=gb-gplus-sharePatent US7705761 - System and method for wideband direct sampling and beamforming using complex analog to digital converter