Broadband filter

A broadband filter for confining or attenuating electromagnetic interference noise from one or more electrical signal sources, said broadband filter comprising:

• one or more filter stages electrically coupled by galvanic or by electromagnetic means to the one or more electrical signal sources for confining or attenuating conducted electromagnetic interference noise;
• one or more conductive shields electrically coupled by galvanic or by electromagnetic means to the one or more electrical signal sources, wherein the one or more conductive shields encapsulate the one or more filter stages for confining or attenuating conducted and/or radiated electromagnetic interference noise;
• and
• one or more conductive partition layers to encapsulate the one or more filter stages such that the partition layers electromagnetically couple adjacent filter stages for a selected frequency range of the electromagnetic interference noise, wherein a thickness of the conductive partition layers is chosen to control a degree of coupling;
• wherein each filter stage has a different cut-off frequency for confining or attenuating the conducted electromagnetic interference noise at a cut-off frequency thereof.

A broadband filter for confining or attenuating electromagnetic interference noise from one or more electrical signal sources, said broadband filter comprising:

• one or more filter stages electrically coupled by galvanic or by electromagnetic means to the one or more electrical signal sources for confining or attenuating conducted electromagnetic interference noise;
• one or more conductive shields electrically coupled by galvanic or by electromagnetic means to the one or more electrical signal sources, wherein the one or more conductive shields encapsulate the one or more filter stages for confining or attenuating conducted and/or radiated electromagnetic interference noise;
• and
• one or more conductive partition layers to encapsulate the one or more filter stages such that the partition layers electromagnetically couple adjacent filter stages for a selected frequency range of the electromagnetic interference noise, wherein a thickness of the conductive partition layers is chosen to control a degree of coupling;
• wherein the conductive partition layers and/or the one or more conductive shields comprise a magnetic material for magnetically coupling the electromagnetic interference noise.