A Method for Optimal Layout of Noise Sources Using the Correlation between the Magnetic Distribution of Antenna and Noise Source

We have developed a novel design method in response to the “intra-EMC problem.” In portable equipment, noise generated from digital circuits in the equipment leaks into the receiver circuit, causing a deterioration in receiver sensitivity. In particular, since downsizing has resulted in the antennas within wireless communication equipment becoming ever closer to the noise source, a significant amount of noise is delivered via the propagation channel that is created between the communication antenna and the noise source. In developing our novel design method, we have modeled the noise source and antenna from the phenomena generated in equipment. We have discovered that the optimal layout of noise sources can be calculated according to the correlation between the magnetic distribution of the noise source and that of the antenna.