A Synthesis Procedure For Unanodized Nondispersive Surface Wave Filters

A synthesis procedure is presented for nondispersive surface acoustic wave filters having unanodized transducers. The simplest filter design utilizes flat-passband transducers whose uniform acoustic beam is useful in acoustic correlators and reflective array pulse compressors (RAC). Another device is a spectral weighting (e.g. Hamming) filter which may be a separate unit or an integral part of a RAC.