Large Pulse Compression Ratio Obtained with Nonlinear Interaction of Bulk Acoustic Waves in LiNbO/sub 3/

We report here on increased bandwidth in bulk wave parametric convolvers, and demonstrate a new approach to cancellation of the inherent signal distortion in time inverters. A 6 ns compressed pulse has been generated in the convolver by autoconvolution of a 7 μs V-FM chirp signal (center frequency of 1.2 GHz), using the nonlinear interaction of longitudinal waves in LiNbO ₃. Time inversion of microwave signals has been demonstrated with uniform output for signal lengths up to 5 μs, by compensating for the signal distortion resulting from delay line attenuation.