Coupled Microstrip Line Method

The results obtained by the coupled microstrip line method are generally the same as the results obtained by using the two PCBs as the internal interference source, and both increase with the increase of frequency; (2) The electric field curve obtained by the coupled microstrip line method is compared with the PCB as the internal interference source Method, will lose part of the resonance point, and the accuracy at high frequency is low; the electric field value at the observation point also has a difference, indicating that different PCB types will also cause different electromagnetic radiation characteristics of electronic devices. In summary, the method of using PCB as the interference source is more accurate than the coupled microstrip method, and it is suitable for different PCBs as the internal interference source.