The high-frequency performance of SiGe base heterojunction bipolar transistors (HBT) at high current densities is studied in this thesis.
本文对n~+pn~-n~+型SiGe基区异质结双极晶体管(HBT)在大电流下的频率特性进行了研究。
参考来源 - 适用于大电流的SiGe HBT频率特性的解析模型For RCS, by analyzing the frequency performance of radar scattering and the radar scattering source of the missile parts, the physical optics method and the equivalent current method are used as the basic methods.
对导弹外形产生的RCS值的计算，从电磁场积分方程出发，通过分析雷达散射的频率特性和导弹上构成雷达散射源的部件特性，以平面元方法（对各个单元上的散射场计算采用物理光学法）为基础，并采用等效电流法计入边缘绕射的影响。
参考来源 - 导弹外形气动与隐身一体化优化设计研究·2,447,543篇论文数据，部分数据来源于NoteExpress
Low temperature coefficient, high precision, low noise, and good high frequency performance.
温度系数小、精度高、噪声低、高频性能好。
So, complex programmable logic device can improve the system's high-frequency performance and signal to noise ratio.
结论采用复杂可编程逻辑器件替代通用数字集成器件，可提高系统的高频率特性，并提高信号源的信噪比。
The diameter, length, arch height and space of bond-wires have great impacts on the radio frequency performance of RF power transistor.
键合线的直径、长度、拱高和并列键合线间距等物理参量，均对器件性能有很大影响。
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