Shielded Connector Assembly With Frequency-Selective Slot Array

A shielded connector assembly, comprising:

• a high-speed connector housing;
• an outer conductive spatial shield formed of conductive material and configured to at least partially surround the high-speed connector housing;
• a plurality of slot apertures formed in the outer conductive spatial shield and arranged in a slot array dimensioned to function as a frequency-selective structure that attenuates electromagnetic energy at one or more targeted electromagnetic interference frequencies;
• and
• a bottom flange extending along a lower perimeter of the outer conductive spatial shield, the bottom flange configured to be continuously soldered to a ground reference of a printed circuit board to establish a substantially continuous, low-impedance electrical ground path around at least a portion of the outer conductive spatial shield,
• wherein common-mode currents induced on the outer conductive spatial shield are preferentially shunted to the ground reference through the substantially continuous, low-impedance electrical ground path while the slot array attenuates electromagnetic energy at the one or more targeted electromagnetic interference frequencies.

A printed circuit board assembly, comprising:

• a printed circuit board including a ground plane;
• a high-speed connector housing mounted to the printed circuit board and including a plurality of electrical terminals;
• and
• an outer conductive spatial shield at least partially surrounding the high-speed connector housing, the outer conductive spatial shield including:
• a plurality of slot apertures arranged in a slot array dimensioned to attenuate electromagnetic energy at one or more predetermined electromagnetic interference frequencies;
• and
• a bottom flange continuously soldered to the ground plane of the printed circuit board to establish a substantially continuous, low-impedance ground path for the outer conductive spatial shield,
• wherein the slot array and the substantially continuous, low-impedance ground path cooperate to suppress electromagnetic interference within the printed circuit board assembly.

A method of mitigating electromagnetic interference in a high-speed connector, the method comprising:

• providing an outer conductive spatial shield configured to at least partially surround a high-speed connector housing;
• forming a plurality of slot apertures in the outer conductive spatial shield, the plurality of slot apertures dimensioned to function as frequency-selective elements that attenuate electromagnetic energy at one or more targeted electromagnetic interference frequencies;
• and
• continuously soldering a bottom flange of the outer conductive spatial shield to a ground reference of a printed circuit board to establish a substantially continuous, low-impedance ground path,
• whereby common-mode currents induced on the outer conductive spatial shield are shunted to the ground reference while electromagnetic energy at the one or more targeted electromagnetic interference frequencies is attenuated by the slot apertures.