Title :
An evaluation of noise power using the weighted magnetic field product for Intra-EMC problems
Author :
Maekawa, Tomoya ; Ogawa, Koichi
Author_Institution :
Automotive & Ind. Syst. Co., Panasonic Corp., Kusatsu, Japan
Abstract :
A novel design method has been developed to solve the Intra-EMC problem in mobile equipment. Recently, there has been a great deal of interest in the deterioration of receiver sensitivity due to the leakage of noise into a receiver circuit via the antenna. To solve this problem, we developed a design method in our previous studies that could estimate the optimal layout of a noise source according to the correlation of magnetic distributions while considering the noise source polarization. However, the conventional method is limited to a relative evaluation. In this paper, we propose a new design method to estimate the coupling characteristics (S21) quantitatively by using the weighted magnetic field product, which is calculated from the magnetic field distributions of the noise source and the antenna. The effectiveness of the proposed method, which uses a TEG to simulate a portable telephone, has been verified. Furthermore, we achieved a good proportional relationship between the coupling characteristics (S21) and the weighted magnetic field product.
Keywords :
antennas; electromagnetic compatibility; magnetic fields; noise measurement; coupling characteristics; intraEMC problems; magnetic field distributions; mobile equipment; noise power; noise source polarization; optimal noise layout; weighted magnetic field product; Antenna radiation patterns; Couplings; Design methodology; Magnetic fields; Noise; Receiving antennas; Intra-EMC Problem; antenna; coupling characteristics (S21); noise source; weighted magnetic field product; wireless applications;
Conference_Titel :
Electromagnetic Compatibility, Tokyo (EMC'14/Tokyo), 2014 International Symposium on
Conference_Location :
Tokyo