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一、前言在晶体振荡器中,对频率稳定度起主要作用的是晶体振子。而确定振子频率的第一个要素是它的尺寸。在比短波频带更高的频率中,利用在宽温度范围内频率变化小的AT切割片的厚薄切变振动,因此,其厚薄尺寸如冈野氏的报导所记述的那样。这时,如果不考虑电极负载质量等影响的话,振子的厚度(mm)和谐振频率(mc)的乘积为1.66mm·mc(古贺逸策先生之值)。所以,在20
First, the preface In the crystal oscillator, the main role of frequency stability is the crystal oscillator. The first element that determines the oscillator frequency is its size. At frequencies higher than the short-wave frequency band, the thickness-shear thinning of the AT dicing sheet with a small change in frequency over a wide range of temperatures is used, and therefore, the thickness is as described in the report of Okano. At this time, the product of the thickness (mm) of the vibrator and the resonance frequency (mc) is 1.66 mm · mc (the value of Mr. Koga Heights), irrespective of the influence of the load quality of the electrode. So at 20