Research on Research on Opening Tempest Rugged Chassis Parameters
Common opening parameters include opening size, opening shape and opening position. Set the side length of a square hole to vary from 1 ∈ (1, 40) mm. Under the condition of frequency f=500MHz, the electric field value E at the monitoring point changes with L. As the size of the square hole increases, the electromagnetic energy radiated by the holed chassis gradually increases, and the electric field value at the monitoring point increases accordingly. ,
Its rising trend gradually slows down with the increase of the size of the opening; the shape of the opening in actual production is roughly three kinds of opening shapes: square hole, round hole, hexagonal hole. As the size of the opening increases, the electric field value at the observation point gradually increases; when the area of the square hole, circular hole, and hexagonal hole are equal, the electric field value at the observation point is roughly equal;
the opening position is set to calculate the frequency f=2.5GHz, keeping the square hole size l×w=20mm×20mm unchanged, the electric field value of the observation point is the largest when the hole is opened at the center of the chassis wall; the relationship between the electric field value at the observation point and the hole position is around the center of the box wall The points are distributed symmetrically; the closer the hole is to the corner of the chassis wall, the smaller the electric field value at the observation point.
