An improved surface acoustic wave (SAW)/diode convolver is presented.It makes use of a SAW tapped delay line and the nonlinearity of an attached array of backward biased diodes.The harmonics of input signals and the influence between the taps can be suppressed well in the new structure.It possesses the advantages of real-time processing
simple structure and high efficiency.The analysis of the convolver and the experimental results of a device with 28 taps are also given.