Electromagnetic interference (emi) filter and process for providing electromagnetic compatibility of an electronic device while in the presence of an electromagnetic emitter operating at the same frequency

An electromagnetic interference (EMI) filter, comprising:

• a capacitive low pass broadband electromagnetic interference (EMI) filter associated with one or more leads of an electronic device and capable of attenuating a range of frequencies;
• and
• an inductor-capacitor (L-C) series resonant notch electromagnetic interference (EMI) filter associated with the leads of the electronic device and capable of attenuating a specific frequency outside the attenuation range of the broadband EMI filter, wherein a capacitive element of the notch EMI filter is integrated with the broadband EMI filter;
• wherein the notch EMI filter comprises a plurality of notch electromagnetic interference (EMI) filters associated with the leads of the electronic device and capable of attenuating a plurality of specific frequencies outside the attenuation range of the broadband EMI filter.

An electromagnetic interference (EMI) filter, comprising:

• a capacitive low pass broadband electromagnetic interference (EMI) filter associated with one or more leads of an electronic device and capable of attenuating a range of frequencies;
• and
• an inductor-capacitor (L-C) series resonant notch electromagnetic interference (EMI) filter associated with the leads of the electronic device and capable of attenuating a specific frequency outside the attenuation range of the broadband EMI filter, wherein a capacitive element of the notch EMI filter is integrated with the broadband EMI filter;
• wherein the notch EMI filter comprises an L-C series resonant circuit extending between two leads of the electronic device.

An electromagnetic interference (EMI) filter, comprising:

• a capacitive low pass broadband electromagnetic interference (EMI) filter associated with one or more leads of an electronic device and capable of attenuating a range of frequencies;
• and
• an inductor-capacitor (L-C) series resonant notch electromagnetic interference (EMI) filter associated with the leads of the electronic device and capable of attenuating a specific frequency outside the attenuation range of the broadband EMI filter, wherein a capacitive element of the notch EMI filter is integrated with the broadband EMI filter;
• wherein the broadband EMI filter comprises at least a portion of a hermetic terminal for an implantable medical electronic device.

An electromagnetic interference (EMI) filter, comprising:

• a capacitive low pass broadband electromagnetic interference (EMI) filter associated with one or more leads of an electronic device and capable of attenuating a range of frequencies;
• and
• an inductor-capacitor (L-C) series resonant notch electromagnetic interference (EMI) filter associated with the leads of the electronic device and capable of attenuating a specific frequency outside the attenuation range of the broadband EMI filter, wherein a capacitive element of the notch EMI filter is integrated with the broadband EMI filter;
• wherein the notch EMI filter comprises an L-C series resonant circuit disposed between each lead of the electronic device and a ground.

An electromagnetic interference (EMI) filter, comprising:

• a capacitive low pass broadband electromagnetic interference (EMI) filter associated with one or more leads of an electronic device and capable of attenuating a range of frequencies;
• an inductor-capacitor (L-C) series resonant notch electromagnetic interference (EMI) filter associated with the leads of the electronic device and capable of attenuating a specific frequency outside the attenuation range of the broadband EMI filter, wherein a capacitive element of the notch EMI filter is integrated with the broadband EMI filter;
• a casing of dielectric material through which the leads of the electronic device extend;
• a first set of electrode plates disposed within the casing in conductive relation with the leads of the electronic device, a second set of electrode plates disposed within the casing in non-conductive relation with the leads of the electronic device and in an alternating stack with the first set of electrode plates, and a first conductive termination surface conductively coupled to the second set of electrode plates, wherein the first and second sets of electrode plates form the broadband EMI filter;
• and
• a third set of electrode plates disposed within the casing in conductive relation with the leads of the electronic device, a fourth set of electrode plates disposed within the casing in non-conductive relation with the leads of the electronic device and in an alternating stack with the third set of electrode plates, and a second conductive termination surface conductively coupled to the fourth set of electrode plates, wherein the third and fourth sets of electrode plates form the capacitive element of the notch EMI filter;
• and
• an inductor conductively coupled to the second conductive termination surface to form an inductive element of the notch EMI filter.

A process for providing electromagnetic compatibility of an electronic device while in the presence of an electromagnetic emitter operating at the same or a similar frequency or frequencies, comprising the steps of:

• associating a low pass broadband electromagnetic interference (EMI) filter with one or more leads of the electronic device;
• attenuating one or more specific frequencies passing through the broadband EMI filter and generated by the electromagnetic emitter, utilizing an inductor-capacitor (L-C) series resonant notch electromagnetic interference (EMI) filter;
• and
• integrating the notch EMI filter with the broadband EMI filter, wherein the integrated broadband and notch EMI filters comprise:
• a casing of dielectric material through which the leads of the electronic device extend;
• a first set of electrode plates disposed within the casing in conductive relation with the leads of the electronic device, a second set of electrode plates disposed within the casing in non-conductive relation with the leads of the electronic device and in an alternating stack with the first set of electrode plates, and a first conductive termination surface conductively coupled to the second set of electrode plates, wherein the first and second sets of electrode plates form the broadband EMI filter;
• and
• a third set of electrode plates disposed within the casing in conductive relation with the leads of the electronic device, a fourth set of electrode plates disposed within the casing in non-conductive relation with the leads of the electronic device and in an alternating stack with the third set of electrode plates, and a second conductive termination surface conductively coupled to the fourth set of electrode plates, wherein the third and fourth sets of electrode plates form the capacitive element of the notch EMI filter.

A process for providing electromagnetic compatibility of an implantable electronic medical device while in the presence of an electronic article surveillance (EAS) device operating at the same or a similar frequency or frequencies, comprising the steps of:

• associating a low pass broadband electromagnetic interference (EMI) filter with one or more leads of the implantable electronic medical device, wherein the broadband EMI filter comprises a feedthrough filter capacitor;
• attenuating one or more specific frequencies passing through the feedthrough filter capacitor and generated by the EAS device utilizing a notch electromagnetic interference (EMI) filter;
• and
• integrating the notch EMI filter with the broadband EMI filter, wherein the feedthrough filter capacitor comprises:
• a casing of dielectric material through which the leads of the electronic device extend;
• a first set of electrode plates disposed within the casing in conductive relation with the leads of the electronic device, a second set of electrode plates disposed within the casing in non-conductive relation with the leads of the electronic device and in an alternating stack with the first set of electrode plates, and a first conductive termination surface conductively coupled to the second set of electrode plates wherein the first and second sets of electrode plates form the broadband EMI filter;
• and
• a third set of electrode plates disposed within the casing in conductive relation with the leads of the electronic device, a fourth set of electrode plates disposed within the casing in non-conductive relation with the leads of the electronic device and in an alternating stack with the third set of electrode plates, and a second conductive termination surface conductively coupled to the fourth set of electrode plates, wherein the third and fourth sets of electrode plates form the capacitive element of the notch EMI filter.