dc.contributor.authorSoh, Weishan.
dc.description.abstractThis project investigates the feasibility of retrofitting commercial off-the-shelf liquid crystal display (LCD) monitors to meet more stringent radiated emission requirements, such as military electromagnetic compatibility (EMC) standards. For reciprocity theorem, a LCD monitor with low radiated emission also exhibits good electromagnetic immunity. Hence, the modified LCD monitors are rugged enough for a more hostile electromagnetic environment and also not causing interference to other nearby systems. The project begins with a review of the basic operating principle of a LCD monitor display and common electromagnetic interference (EMI) suppression techniques. Preliminary radiated emission profiles of the various circuit modules are measured and analysed. The EMI filter has been found to play an important role in controlling radiated emissions. Hence, the EMI filter design is carefully studied and analysed to reduce the radiated emission levels from the LCD monitor. Finally, the radiated emissions of original LCD monitor and the retrofitted LCD monitor are measured in accordance with MIL-STD-461E to demonstrate the effectiveness of the EMI suppression techniques implemented. By properly designing the EMI filter on the power card of the original LCD monitor, the radiated emission from the LCD monitor can be reduced by 10 to 20 dB from 2 MHz to 1 GHz.en_US
dc.format.extent72 p.en_US
dc.titleSystematic investigation and reduction of radiated emission from LCD monitoren_US
dc.contributor.supervisorSee Kye Yaken_US
dc.contributor.schoolSchool of Electrical and Electronic Engineeringen_US
dc.description.degreeMaster of Science (Electronics)en_US

Files in this item


This item appears in the following Collection(s)

Show simple item record