Rectangular at crystal oscillator
专利汇可以提供Rectangular at crystal oscillator专利检索，专利查询，专利分析的服务。并且PURPOSE:To eliminate the effect of spurious for the rectangular At crystal oscillator by setting the width size to the value smaller than the width in that the thickness shear oscillation frequency to be used coincides with the secondary width vertical higher-order oscillation frequency. CONSTITUTION:The secondary width vertical oscillation cuases easily to the rectangular At-cur crystal oscillator in addition to the frequency temperature property of the third curve. With smaller size of the crystal, the couplijg increases between the thickness shear oscillation and other various spurious. and thus the AT-cut third curve can not be obtained. In this respect, the width of the oscillator is set smaller than the width in that the frequency of the secondary width vertical oscillation conincides with the frequency of the thickness shear oscillation. As a result, the thickness shear oscillation receives no effect of the width vertical higher-order oscillation. At the same time, the length vertical oscillation causes as shown in the figure in addition to the width vertical oscillation. And when the length and width of the oscillator approximate to each other, the width and length vertical oscillations combine to each other not to be independent each other. Thus, the width is set to about 1/3 the length or less to avoid the combination between the both.，下面是Rectangular at crystal oscillator专利的具体信息内容。
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