Can poor grounding of a data center switch cause RE (resonance generator) to exceed the limit?

Poor grounding of data center switches is a common cause of excessive radiated emissions (REs). When the chassis is suspended, the grounding impedance of the cable shielding layer approaches infinity, and common-mode current radiates through the cable, forming an antenna. Actual measurements show that when the grounding resistance deteriorates from 10mΩ to 1Ω, the radiated field strength in the 30MHz-300MHz frequency band increases by 12-18dB. Standard requirements: chassis grounding resistance ≤0.1Ω, grounding wire using 20mm wide copper braided tape <1m in length; PCB ground and chassis ground are crimped using metal studs, with a contact resistance <2.5mΩ. Rectification case: A certain model used grounding studs on a painted chassis without conductive washers, exceeding the 250MHz limit by 12dB. After adding toothed washers, the resistance decreased by 14dB, meeting Class B standards.