Longitudinally coupled surface acoustic wave resonator filter

   
   

A longitudinally coupled surface acoustic wave resonator filter includes first and second interdigital transducers (IDTs) disposed on a quartz substrate and reflectors located on both sides of an area in which the first and second IDTs are located. A distance L.sub.1 between the centers of the adjacent electrode fingers of the first and second IDTs satisfies equation (1): (0.35+n/2).lambda. Продольно соединенный поверхностный фильтр резонатора акустической волны вклюает сперва и во-вторых interdigital датчики (IDTs) размещанные на субстрате и рефлекторах кварца расположенных на обеих сторонах области в расположено первое и второе IDTs. Расстояние L.sub.1 между центрами смежных перстов электрода первого и второго IDTs удовлетворяет уровнение (1): (0.35+n/2).lambda.

 
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