Research on linearization modeling technology based on large-signal scattering function
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Research on linearization modeling technology based on large-signal scattering function
Issue 4, Pages: 20-23(2008)
作者机构:
1. 哈尔滨工业大学电子与信息技术研究院
2. 哈尔滨工业大学电子与信息技术研究院,黑龙江,哈尔滨,150001
作者简介:
基金信息:
DOI:
CLC:TN92;TN722
Published:2008
稿件说明:
移动端阅览
HUA Xiao-jie, LIN Mao-liu, SUN Hong-jian. Research on linearization modeling technology based on large-signal scattering function[J]. 2008, (4): 20-23.
DOI:
HUA Xiao-jie, LIN Mao-liu, SUN Hong-jian. Research on linearization modeling technology based on large-signal scattering function[J]. 2008, (4): 20-23.DOI:
Research on linearization modeling technology based on large-signal scattering function
摘要
基于非线性大信号散射函数理论
对射频功率放大器在非线性区的非线性特性进行了研究;为使非线性大信号散射函数更接近于传统的散射参数
在弱非线性的前提下
综合运用相位归一化和线性化技术对大信号散射函数进行合理化建模
并证明了在大信号基波激励条件下相位共轭项谐波引起的激励是不可忽略的;最终
利用实际HEMT晶体管的测量数据分析了相位共轭项引起的激励产生的响应失真
并指出后续工作的重点方向。
Abstract
Based on nonlinear large-signal scattering functions theory
some notable characters of RF-amplifier when op-erated on nonlinear regime were described. In case of weakly nonlinear device
a novel method to combine phase nor-malization and linearization of scattering functions was presented
which looks similar to classical scattering parameters for modeling nonlinear device under test (DUT). Moreover
the reasons were analyzed for the distortion of response and relate it with the emergence of conjugate term. Finally
it prove that the response to the conjugate term of the small input excitation is not negligible and conclude with the efficiency of the model.