A Novel Method for Optimizing the Electromagnetic Compatibility of the Multi-radio-Frequency System
摘要
The multi-radio-frequency system that uses electromagnetic waves for wireless communication is frequently hindered by electromagnetic interference (EMI), resulting in performance degradation or functional failures of the equipment. And solving the EMI problem is the shortcoming of the current research on multi-radio-frequency systems, which makes it urgent to propose an electromagnetic compatibility (EMC) optimization method for multi-radio-frequency systems. The EMI between devices is essentially the coupling of signals, and we constructed the multiple-device EMI network structure model of the system by jointly characterizing the electromagnetic signal parameters with multiple domains of time, frequency, space, energy, polarization, and modulation. By quantitatively characterizing the EMI of the system with the interference margin, we locate the equipment that generates EMI. And proposed evaluation indexes to measure the pairs of devices with interference from different domains, to find the electromagnetic parameters unreasonable domain of the device from the root, which provides a guideline to precisely regulate the electromagnetic parameters of the device in a feedback manner. This method is of great significance for to enhancing the compatibility and robustness of the multi-radio-frequency systems and provides a theoretical basis for further research.