Abstract: The intermediate frequency (IF) portion of a television receiver includes a surface acoustic wave (SAW) filter comprising first, second and third transducers mounted on a piezoelectric substrate. Each transducer includes at least two interdigitized comb-shaped conductors. The teeth of the comb-shaped conductors of the first transducer overlap in accordance with a predetermined envelope to define a desired IF response. The first and second transducers are connected to IF circuit portions of the receiver. The third transducer is positioned from the second transducer so that regenerated acoustic signals reflected from the first and third transducers to the second transducer are substantially 180.degree. out of phase at a predetermined frequency. The aperture W.sub.3, i.e., the overlap of the teeth of the comb-shaped elements, of the third transducer is selected with respect to the aperture W.sub.

Abstract: A piezoelectric body has a transducer on one surface. The transducer includes an electrically insulating body on the piezoelectric body; the electrically insulating body has a surface relief pattern on a surface which is opposite the piezoelectric body. An electrically conductive layer is on the electrically insulating body on the surface having the relief pattern thereon.The transducer can be formed by means of a master body. A surface of the master body, having a relief pattern thereon, is pressed against the electrically insulating body to form a relief pattern on the electrically insulating body. The electrically conductive layer is then formed on the electrically insulating body on the surface having the relief pattern thereon.