Elastic surface wave recursive filter

摘要

An elastic surface wave recursive filter comprising: one passive resonator formed by two tuned transducers, a means for introducing an elastic surface wave into such resonator, such means being connected to an input of the filter, and a third transducer having the form of a transversal filter, the transducer being coupled to the resonator and connected to an output of the filter. The transfer function of the filter is of the form P(z)/Q(z), the numerator and the denominator being independant.