| 摘要 |
FIELD: radio engineering, in particular, devices for frequency selection. SUBSTANCE: device has piezoelectric plate 1 which is made from lanthanum-gallium silicate, two pairs of overlapping exciting electrodes 2, 3 and 4, 5 and terminals 6. Goal of invention is achieved by choice of length Land area of exciting electrodes according to equations, where H is thickness of piezoelectric plate. Another claim of invention describes device design in which piezoelectric plate rotates with respect to normal to face in range of 15 degrees. EFFECT: increased upper frequency range, decreased level of side transmitted frequencies. 2 cl |
