| Summary: | 碩士 === 國立臺北科技大學 === 電腦通訊與控制研究所 === 91 === The main purpose of this thesis is to improve the compensation method for nonideal phase produced by unequal length of differential transmission lines. The traditional compensation method used meander line to increase length of the shorter one of the differential transmission lines. This method not only increases the size of the circuit but also introduces the leading problem of propagation delay due to the near-field coupling effect. In order to improve the shortcomings mentioned above, this thesis proposes a new improvement method, which uses slow wave property of periodic structure to compensate the signal integrity of the bending differential transmission lines. Though the length of the bending differential transmission lines is different, the propagation delay of the bending differential transmission lines will be compensated to be the same by changing the phase velocity of the shorter transmission line. Furthermore the phase of differential output is improved, the quality of output signal is upgraded. In the meantime, we combined mixed mode s-parameters and eye pattern to analyze circuit characterization. Finally, through the consistency of simulation and measurement the proposed method is available.
The results presented in the thesis show the slow wave properties of periodic structure on compensating output phase of differential transmission lines has a potential value on practical application.
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