本文根据晶体管非线性元件的特点，利用数学推导方法，从基础上分析了变频工作啸叫的原因，并提出了消除方法。
Based on the speciality of transistors non-linearity, using maths method, this article analyses the cause of whistle of frequency conversion circuit and provides method to eliminate.
本文将普通的双极型IC工艺用干磁敏器件的制作中，成功地研制了一种新型三维磁敏晶体管，并在理论和实验上分析讨论了其灵敏度、线性度和失调等问题。
Using the standard bipolar IC technology, a 3-D magnetotransistor is successfully designed, The sensitivity, linearity and offset of the devices are theoretically and experimentally analyzed.
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