Interconnection system and an electrical connector having resonance control

An interconnection system comprising:

• a mating connector including a plurality of terminal sub-assemblies, each of the terminal sub-assemblies including a signal terminal and a ground shield that is proximate to the signal terminal to shield the signal terminal from other terminal sub-assemblies;
• and
• an electrical connector comprising a plurality of contact sub-assemblies that each include a signal contact and a resonance-control shield that is proximate to the signal contact of the corresponding contact sub-assembly;
• wherein the terminal sub-assemblies of the mating connector engage corresponding contact sub-assemblies of the electrical connector when the mating and electrical connectors are mated, the signal terminals of the terminal sub-assemblies engaging the signal contacts of the corresponding contact sub-assemblies, each of the ground shields of the terminal sub-assemblies being inserted between the resonance-control shield and the signal contact of the corresponding contact sub-assembly, the ground shield and the resonance-control shield having respective broad surfaces that face each other with a capacitive gap therebetween.