Chapter 6 Conclusion
6.2 Suggestions for Future Works
Strictly speaking, there are still something undone and to be improved in this dissertation. The MTL analysis method in Chapter 2 assumes that the propagating modes are TEM modes, but in the inhomogeneous system like microstrip coupled lines, the modes will be quasi TEM modes. Then the effect of resistance and conductance cannot be ignored. Although a possible solution is also discussed, but how the loss factor affects the modal decomposition has not been studied yet. In addition, theoretically this method can model the system with multiple differential pairs, but the validation is not done. More studies on these will make the mechanism of noise interference clearer. The TSV-CMF in Chapter 3 is designed with a lumped circuit model, which is known with a DM cutoff even under lossless environment. It is
suggested that higher order models or transmission-line-based models can be studied for more advanced design. Since the electrical behavior of transmission line is a transcendental function, there must be more than 3 TZs in the CMF design proposed in Chapter 4. Studying how to generate or involve more TZs in the stopband and how to control the TZs can make the CMF with better suppressing effect. Although step-impedance lines have been applied in the A-CMF in Chapter 5, there is still a DM TZ at the higher frequency, which may limit the application. In addition, to be implemented in PCB indeed reduces the cost, but the size is relatively large. It is suggested to study the duality circuit of the proposed one and to realize the CMF without slotlines.
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PUBLICATION LIST
I. Journal Paper:
[1] C.-H. Cheng, C.-H. Tsai, and T.-L. Wu, “A novel time domain method to extract equivalent circuit model of patterned ground structures,” IEEE Microw. Compon.
Lett., vol. 20, no. 9, pp. 486–488, Oct. 2010.
[2] C.-H. Cheng, T.-Y. Cheng, C.-H. Du, Y.-C. Lu, Y.-P. Chiou, Sally Liu, T.-L. Wu,
“An equation-based circuit model and its generation tool for 3-D IC power delivery networks with an emphasis on coupling effect,” IEEE Trans. Compon.
Packag. Manuf. Technol., vol.4, no.6, pp. 1062-1070, June. 2014.
[3] C.-Y. Hsiao, C.-H. Cheng, and T.-L. Wu, “A new broadband common-mode noise absorption circuit for high-speed differential digital systems,” IEEE Trans. Microw.
Theory Techn, vol.63, no.6, pp. 1894-1901, Jun. 2015.
[4] C.-H. Cheng, and T.-L. Wu, “An ultra-compact TSV-based common-mode filter (TSV-CMF) in three-dimensional integrated circuits (3-D ICs),” IEEE Trans.
Electromagn. Compat., accepted.
II. Conference Paper:
[1] Y.-C. Tseng, C.-B. Chang, C.-K. Tang, C.-H. Cheng, Y.-C. Lu, K.-Y. Lin, T.-L. Wu, and R.-B. Wu, “Design considerations for radio frequency 3DICs,” in Proc. IEEE.
Elect. Design Adv. Packag. Systems Symp., Taipei, Taiwan, Dec. 2012, pp.197-200.
[2] K.-Y. Chen, Y.-A. Sheu, C.-H. Cheng, J.-H. Lin, Y.-P. Chiou, and T.-L. Wu, “A novel TSV model considering nonlinear MOS effect for transient analysis,” in Proc.
IEEE. Elect. Design Adv. Packag. Systems Symp., Taipei, Taiwan, Dec. 2012, pp.
49-52.
[3] C.-H. Cheng, and T.-L. Wu, “A novel common-mode filter for multiple differential pairs with low crosstalk and low mode conversion level” in Proc. IEEE. Elect.
Performance Electron. Package. Systems, San Jose, CA, Oct. 2013, pp.259-262.
[4] C.-H. Cheng, and T.-L. Wu, “A compact dual-band common-mode filtering component for EMC in wireless communication,” in Proc. Asia-Pacific Symp.
Electromagn. Compat., Taipei, Taiwan, May 2015, pp. 349-351.
[5] C.-H. Cheng, and T.-L. Wu, “Effective current distribution analysis method for multiconductor-transmission-line (MTL) system with arbitrary conductor number variation,” in Proc. IEEE. Int. Symp. Electromagn. Compat., Dresden, Germany, Aug. 2015, pp. 594-599.
[6] Y.-A. Hsu, C.-H. Cheng, Y.-C. Lu, and T.-L. Wu, “A prediction method of heat generation in the silicon substrate for 3-D ICs”, in Proc. IEEE. Elect. Performance Electron. Package. Systems, San Jose, USA, Oct. 2015, pp. 89-92.
[7] Y.-A. Hsu, C.-C. Chou, C.-H. Cheng, and T.-L. Wu, “A radiation prediction method based on partial element equivalent circuit,” in Proc. Asia-Pacific Symp.
Electromagn. Compat., Shenzhen, China, May 2016, pp. 95-98.
[8] P.-J. Li, C.-H. Cheng, Y.-C. Tseng, and T.-L. Wu, “Novel absorptive design of common-mode filter at desired frequency band,” in Proc. IEEE. Workshop Signal Power Integrity, Turin, Italy, May 2016.