Masters Theses


Xiao Li

Keywords and Phrases

absorbing material; electromegnatic; EMI mitigation; shielding effectiveness; waveguide panel; wi-fi communication


"The first part of the thesis presents the EM shielding effectiveness (SE) measurement of new kind of waveguide panel, MaxAir, which based on metal coating technology. SE Measurement tell the SE performance of MaxAir compared to the traditional metal waveguide panel. In terms of good features such as lower price, less weight, MaxAir could replace traditional waveguide panel in some applications by its SE results. There are two SE measurement methods are performed for MaxAir panel, both of them based on reverberation chamber. Measured SE for several MaxAir panel samples in different cell dimension and coating configuration. By the Measured SE results of MaxAir and simulated or measured results of pure metal traditional waveguide panel, MaxAir may not as good as traditional one, we need to trade off all of its features to meet the requirement of specific application.

The second part presents a measurement-based evaluation method for lossy material by laptop computer Wi-Fi application. The lossy material could help to reduce the EM noise from the internal components of laptop, which could affect the Wi-Fi communication. Then, based on this practical case, evaluate lossy material performance through the improvement of Wi-Fi behavior. Compared to traditional material property measurement, laptop Wi-Fi method could give a more intuitive evaluation results to how lossy material can help to improve electric product performance. In the measurement, build the Wi-Fi communication between two laptops, monitor the Wi-Fi performance when put material under test on the memory card socket. According to the data rate in different material case, some of lossy material can improve channel quality in the same noise condition."--Abstract, page iii.


Khilkevich, Victor

Committee Member(s)

Drewniak, James L.
Bhobe, Alpesh


Electrical and Computer Engineering

Degree Name

M.S. in Electrical Engineering


Pages are numbered through page 70, Appendix B is unnumbered and the following page is 74.


Missouri University of Science and Technology

Publication Date

Summer 2014


ix, 84 pages

Note about bibliography

Includes bibliographical references (pages 82-83).


© 2014 Xiao Li, All rights reserved.

Document Type

Thesis - Open Access

File Type




Subject Headings

Shielding (Electricity) -- Mathematical models
Electric filters, Wave-guide
Wireless communication systems

Thesis Number

T 10517

Electronic OCLC #