Controlled diode profiling for GaAs strip-coupled correlators

Surface acoustic wave (SAW) memory correlators employ the varactor properties of Schottky diodes arrayed along the acoustic path. Described, and illustrated, here is a tailoring of the implant which defines the Schottky diode region of the strip-coupled GaAs surface acoustic wave memory correlator. The new implant schedule has resulted in improvements in correlation efficiencies in the range of 10-15 dBm for these devices compared to previously reported strip-coupled GaAs memory correlators.