Elastic surface wave resonator
专利汇可以提供Elastic surface wave resonator专利检索，专利查询，专利分析的服务。并且PURPOSE: To absorb a charge due to an abrupt heat change by covering a surface separated more than the prescribed times as much as the wave length of an elastic surface wave from an interdigital electrode and grating electrodes by means of a grounded conductive body thin film electrode on a piezoelectric substrate surface.
CONSTITUTION: The conductive thin film electrode 9 is pattern-generated on a peripheral part by surrounding the interdigital electrode 2 and the grating electrodes 3 and 4 on the piezoelectric substrate 1 and the electrode 9 is grounded by wire 10. The electrodes 3 and 4 are also grounded. At that time, the electrode 9 is arranged at a distance so that a distance D in a horizontal direction with respect to the propagation direction of the elastic surface wave from the electrodes 2, 3 and 4 becomes more than five times as much as the wave length of the elastic surface wave. Thus, pyroelectric effect, namely, the charge which occurs by the abrupt heat change is absorbed in the electrode 9, and pulse noise hardly occurs.
COPYRIGHT: (C)1990,JPO&Japio，下面是Elastic surface wave resonator专利的具体信息内容。
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6 热电元件
