| 摘要 |
PURPOSE:In order to obtain a filter which possesses the desirable attenuation characteristics, through using small number of piezoelectric resonator, and switching the filter characteristics to be polarized or no-polarized, by means of changing the connection of terminals, in a piezoelectric resonator which is designed so as to superpose the electrodes of the surface and the back of the connection section, throug connecting with H Type. |
