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The continuous increase of demand for radios navigators makes the use of Automatic Test Equipments compulsory, in order to reduce the testing time and cost. The Telemakos is an Italian test equipment specifically designed to check radio navigator sensitivities. The paper reports the electromagnetic compatibility analysis carried out to meet the noise specifications. The Telemakos test bench is a very...
We derived expressions of power and ground voltage noises for reducing common-mode voltage in a power distribution network of an LSI and found that they have the same amplitude and a phase difference approaching 180°. To confirm this, we performed an experiment using a test board with a cover-metal structure-essentially, a floating conductor in an LSI package to reduce common-mode voltage. The evaluation...
Power supply noise generated by integrated circuits is one of the major sources of EM radiation from PCBs. The reduction of power supply noise can be realized by means of devices that bypass the current among power supply planes, such as bypass capacitors, ground vias and so on. In the present work the effect of current bypass devices on the far field radiation from multilayer PCBs is represented...
In analog-digital mixed circuit boards, noises from the digital side to the analog side through G ND power supply layer is one of the problems. As one of the methods to reduce noise, slot type GND power supply layer is used. It is to divide G ND power supply layer with slot. However, this method has problems. One of the problems is impedance mismatch on the signal line between the analog and digital...
Advanced encryption standard (AES) cores suffer from information leakage through power supply currents, even with the wave dynamic differential logic (WDDL) known as one of the most tolerable countermeasure design styles against side channel attacks (SCA). The set of plaintexts having bitlevel biased activities are produced with a known secret key and used for diagnosing the vulnerability of AES cores...
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