**4.3 Resonance issues of mechanic structure**

The LCD panel of Notebook and the enclosure or PCB would usually create a resonant structure. The related resonance issue could be explained with the following measuring methodology.


When enclosure of LCD panel was removed, the maximal difference of S21 mentioned above can reach upto 20dB. Hence we can conclude that LVDS and Web camera cables, embedded antenna and its mini-coaxial cable, LCD panel all will lead to amplification of coupling between the interference sources and receiving module.
