Title page for etd-0730118-120729


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URN etd-0730118-120729
Author Wei-bo Lin
Author's Email Address No Public.
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Department Electrical Engineering
Year 2017
Semester 2
Degree Master
Type of Document
Language zh-TW.Big5 Chinese
Title The Prediction of the Optimal Output Power Impedance with the X-parameter Model
Date of Defense 2018-07-18
Page Count 70
Keyword
  • different load
  • Behavioral model prediction
  • X-parameter model
  • 13points
  • 9points
  • Abstract The research predicts the power contours of the transistors and obtains the maximum output power and optimization load impedance by measuring the X-parameter behavior model with different load impedance. This research measures X-parameter of the different transistor testkey by using the X-parameter load-changed measurement system at Chip Implementation Center (CIC) in Tainan, it can obtain the X-parameter behavior model with different load impedance. The measurement data will be imported the RF simulation software which calls Advanced Design System (ADS) to predict the characteristic of the output power and scattering parameter at the different load impedance. The research is continued not only the previous the nine specific load impedance X-parameter behavior model design, but set more four specific load impedance to consist of the thirteen specific load impedance X-parameter behavior model design. If measurement condition of load impedance is far away from Z0(50Ω), the error prediction of X-parameter model will be more apparent. Therefore, the accepted prediction range of the X-parameter behavior model is equal to one-third of absolute value of gamma. This method can predict almost the whole Smith Chart range with output power, and it is more convenient than the conventional load-pull system. It can obtain different input power X-parameter characteristic at same time. It will apply for designing the power amplifier more efficiently.
    Advisory Committee
  • Tzyy-Sheng Horng - chair
  • Chin-Chun Meng - co-chair
  • Hwann-Kaeo Chiou - co-chair
  • Chien-Chang Huang - co-chair
  • Chie-In Lee - advisor
  • Files
  • etd-0730118-120729.pdf
  • Indicate in-campus at 5 year and off-campus access at 5 year.
    Date of Submission 2018-08-30

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