Abstract:
The invention provides a structure and method of its use comprising a filtering and interference suppression device ( 62 ), particularly of the broad band type, for an electric motor ( 34 ) comprising at least a first powering brush ( 16 ) for an armature commutator of the electric motor ( 34 ), of the type comprising a capacitor ( 64 ), one terminal of which is electrically connected to a strip conductor ( 38 ) that electrically powers the first brush ( 16 ) powering the armature commutator of the electric motor ( 34 ), and the other terminal of which is electrically connected to a ground strip conductor ( 58 ), connected, in turn, to the electrical ground ( 60 ) of the electric motor ( 34 ), characterized in that the capacitor ( 72 ) of the filtering and interference suppression device ( 62 ) is of the non-inductive type, and in that each of the non-inductive capacitors ( 72 ) is directly attached to a circuit board ( 73 ) comprising strip conductors, of which are at least one powering strip conductor ( 38, 40 ) for a brush and one ground strip conductor ( 58 ).

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
   This application is a continuation-in-part of PCT/US99/07653, filed Apr. 6, 1999, which was published as WO 99/52210 on Oct. 14, 1999, which is a continuation-in-part of application Ser. No. 09/056,436 filed Apr. 7, 1998 now abandoned; and PCT/US99/07653, filed Apr. 6, 1999, claims the benefit of U.S. Provisional Application No. 60/101,511 filed Sep. 23, 1998 and U.S. Provisional Application No. 60/103,759 filed Oct. 9, 1998. 
   This application also incorporates by reference the entirety of the disclosure of U.S. patent application publication No. 2003/0048029, which is a publication of U.S. patent application Ser. No. 10/239,983, which is a United States national stage proceeding of PCT application number PCT/FR01/00969, filed Mar. 20, 2001, entitled “Filtering and interference suppressing device for an electric motor,” and which names as alleged inventors DeDaran, Francois; (Chatellerault, FR); Bruneau, Severin; (Chatellerault, FR) ; Rouyer, Philippe; (Chatellerault, FR) ; Salembere, Abdou; (Chatellerault, FR). 
   This application also incorporates by reference the disclosure of PCT/US99/07653, Ser. Nos. 09/056,436, 60/101,511, and 60/103,759. 

   BACKGROUND OF THE INVENTION 
   FIELD OF THE INVENTION 
   The present invention relates to electronic component carriers used in the manufacture of electronic equipment. More specifically, the invention relates to component carrier substrates used to protect electronic components from mechanical stresses associated with their handling and coupling within electronic equipment. The component carrier substrates also provide electrical interference shielding and improved thermal characteristics. 
   DISCUSSION OF THE BACKGROUND 
   The majority of electronic equipment produced presently, and in particular computers, communication systems, military surveillance equipment, stereo and home entertainment equipment, televisions and other appliances include miniaturized components to perform new high speed functions and electrical interconnections which according to the materials from which they are made or their mere size are very susceptible to stray electrical energy created by electromagnetic interference or voltage transients occurring on electrical lines. Voltage transients can severely damage or destroy such micro-electronic components or contacts thereby rendering the electronic equipment inoperative, and requiring extensive repair and/or replacement at great cost. 
   Based upon the foregoing there was found a need to provide a multi-functioning electronic component architecture which attenuates electromagnetic emissions resulting from differential and common mode currents flowing within electronic circuits, single lines, pairs of lines and multiple twisted pairs. Such multi-functioning electronic components are the subject of application Ser. No. 08/841,940, continuation-in-part application Ser. No. 09/008,769, and continuation-in-part application Ser. No. 09/056,379, all incorporated herein by reference. 
   While the above referenced electronic components accomplish their respective tasks, usage of such components has been limited for a number of reasons. First, the number of such components required continues to increase as applications, such as data buses, continue to grow. In addition, as the number of required components grows, so does the physical size of multi-component packages. Second, by their nature the electronic components referred to are delicate structures which do not handle physical stress well. During the manufacture of electronic products a number of mechanical stresses associated with handling and soldering can damage the components. 
   Another drawback to using the referenced electronic components is that it becomes very tedious to manually handle and mount the components on electronic products being assembled. This often time translates into lower product yields and added expense due to broken or misconnected components. A further disadvantage to some of the components is that they include leads for thru-hole insertion. Physical stressing, bending or applying torque to the leads can cause a failure in the final product, either immediately or later thereby affecting the products overall reliability. 
   Another source of electrical noise found in prior art differential mode filters, common mode filters and capacitor decouplers is caused by imperfections in the capacitors that make up the filters and decouplers. The effects of these imperfections are commonly referred to as parasitic effects. Parasitic or non-ideal capacitor behavior manifests itself in the form of resistive and inductive elements, nonlinearity and dielectric memory. The four most common effects are leakage or parallel resistance, equivalent series resistance (ESR), equivalent series inductance (ESL) and dielectric absorption. The equivalent series resistance (ESR) of a capacitor is the resistance of the capacitor leads in series with the equivalent resistance of the capacitor plates. ESR causes the capacitor to dissipate power during high flowing ac currents. The equivalent series inductance (ESL) of a capacitor is the inductance of the capacitor leads in series with the equivalent inductance of the capacitor plates. An additional form of parasitic that goes beyond the component itself is stray capacitance which is attributed to the attachment of the capacitor element within an electrical circuit. Stray capacitors are formed when two conductors are in close proximity to each other and are not shorted together or screened by a Faraday shield. Stray capacitance usually occurs between parallel traces on a PC board or between traces/planes on opposite sides of a PC board. Stray capacitance can cause problems such as increased noise and decreased frequency response. 
   Several other sources of electrical noise include cross talk and ground bounce. 
   Cross talk in most connectors or carriers is usually the result of mutual inductance between two adjacent lines rather than from parasitic capacitance and occurs when signal currents follow the path of least inductance, especially at high frequencies, and return or couple onto nearby conductors such as conductive tracks positioned parallel with or underneath the signal current track. Ground bounce is caused by shifts in the internal ground reference voltage due to output switching of a component. Ground bounce causes false signals in logic inputs when a device output switches from one state to another. It has been found that the multi-functioning electronic components, specifically the differential and common mode filters and decouplers disclosed in the above referenced, commonly owned U.S. patent applications, provide improved performance when coupled or used with an enlarged ground shield that can substantially decrease or reduce and in some cases can eliminate capacitor parasitics, stray capacitance, mutual inductive coupling between two opposing conductors, various forms of cross talk and ground bounce. 
   Therefore, in light of the foregoing deficiencies in the prior art, the applicant&#39;s invention is herein presented. 
   SUMMARY OF THE INVENTION 
   Based upon the foregoing, there has been found a need to provide a component carrier which is less susceptible to mechanical stresses and shock, more easily assembled, surface mountable and capable of being used in automated assembly. 
   It is therefore a main object of the present invention to provide a component carrier for maintaining one or more surface mount components. 
   It is another object of the present invention to provide a component carrier which is less susceptible to mechanical stresses imparted upon components during various manufacturing processes. 
   It is also an object of the present invention to provide a component carrier having an enhanced ground surface which improves the functional characteristics of surface mount components coupled to the component carrier. 
   It is a further object of the present invention to provide a component carrier adapted specifically to receive a differential and common mode filter and decoupler as disclosed in the above referenced, commonly owned pending U.S. patent applications. 
   It is a further object of the present invention to provide a component carrier having an enhanced ground surface which improves the functional characteristics of differential and common mode filters and decouplers as disclosed in the above referenced, commonly owned pending U.S. patent applications. 
   It is a further object of the present invention to provide an electrical circuit conditioning assembly that combines a component carrier with a differential and common mode filter and decoupler as disclosed in the above referenced, commonly owned pending U.S. patent applications to thereby provide simultaneous filtering of common and differential mode interference, suppression of parasitic or stray capacitance, mutual inductive coupling between two adjacent conductors and circuit decoupling from a single assembly. 
   These and other objects and advantages of the present invention are accomplished through the use of various embodiments of a component carrier which receives either a thru-hole or surface mount differential and common mode filter and decoupler as disclosed in the above referenced, commonly owned pending U.S. patent applications (hereinafter referred to only as “differential and common mode filter”). 
   One embodiment consists of a plate of insulating material, also referred to as a planar insulator, having a plurality of apertures for accepting the leads of a thru-hole differential and common mode filter. Another embodiment consists of a surface mount component carrier comprised of a disk of insulating material having at least two apertures. 
   The disk is substantially covered by a metalized ground surface and includes at least two conductive pads surrounding the apertures, and insulating bands which surround each conductive pad. The insulating bands separate and electrically isolate the conductive pads from the metalized ground surface. A surface mount component, such as a differential and common mode filter, is positioned lengthwise between the two conductive pads and operably coupled to the carrier. Once the surface mount component is coupled to the carrier, the combination can be manipulated, either manually or through various types of automated equipment, without subjecting the surface mount component to mechanical and physical stresses normally associated with the handling of miniature components. 
   The carrier also provides the added benefit of improved shielding from electromagnetic interference and over voltage dissipation due to the surface area of the metalized ground surface. 
   The same concept for the above described carrier is also incorporated into several alternate embodiments, either independently, embedded within electronic connectors or configured for use with electric motors. The overall configuration and electrical characteristics of the concepts underlying the present inventions are also described as an electrical circuit conditioning assembly which encompasses the combination of differential and common mode filters and component carriers optimized for such filters. 
   These along with other objects and advantages of the present invention will become more readily apparent from a reading of the detailed description taken in conjunction with the drawings and the claims. 

   
     BRIEF DESCRIPTION OF THE DRAWINGS 
       FIG. 1  is a perspective, exploded view of a thru-hole differential and common mode filter coupled to a portion of the thru-hole component carrier of the present invention; 
       FIG. 2  is an elevational view in cross section of a single-sided surface mount component carrier of the present invention; 
       FIG. 3  is a top plan view of the surface mount component carrier shown in  FIG. 2 ; 
       FIG. 4  is an elevational view in cross section of a double-sided surface mount component carrier of the present invention; 
       FIG. 5  is a top plan view of the surface mount component carrier shown in  FIG. 4 ; 
       FIG. 6  is an elevational view in cross section of an alternate embodiment of a single-sided surface mount component carrier of the present invention; 
       FIG. 7  is a top plan view of the surface mount component carrier shown in  FIG. 6 ; 
       FIG. 8  is an elevational view in cross section of an alternate embodiment of a double-sided surface mount component carrier of the present invention; 
       FIG. 9  is a top plan view of the surface mount component carrier shown in  FIG. 8 ; 
       FIGS. 10A and 10B  are top plan views of a surface mount component carrier with and without a differential and common mode filter, as shown in  FIG. 10C , attached to the component carrier;  FIG. 10D  is a top plan view of a multi surface mount component carrier with differential and common mode filters; 
       FIG. 11A  is a top plan view of a multi surface mount component carrier with and without differential and common mode filters coupled to the component carrier, wherein the component carrier is optimized for use in a D-sub connector assembly;  FIG. 11B  is an elevational view in cross section of the component carrier along lines A—A: and  FIG. 11C  is an elevational view in cross section of the component carrier along lines B—B; 
       FIG. 12A  is a top plan view of a surface mount component carrier with a strip differential and common mode filter partially shown coupled to the component carrier, wherein the component carrier is optimized for use in an RJ-45 connector assembly;  FIG. 12B  is a bottom plan view of the component carrier shown in  FIG. 12A ; and  FIG. 12C  is an elevational view in cross section of the component carrier shown in  FIG. 12A  along lines A—A; 
       FIG. 13A  is a top plan view of an alternate surface mount component carrier, wherein the component carrier is optimized for use in an RJ-45 connector assembly;  FIG. 13B  is a bottom plan view of the component carrier shown in  FIG. 13A ; and  FIG. 13C  is an elevational view in cross section of the component carrier shown in  FIG. 13A  along lines A—A; 
       FIG. 14A  is a top plan view of a multi surface mount component prototype carrier; 
       FIG. 14B  is an elevational view in cross section of the component carrier shown in  FIG. 14A  along lines A—A;  FIG. 14C  is an elevational view in cross section of the component carrier shown in  FIG. 14A  along lines B—B; and  FIG. 14D  is a bottom plan view of the component carrier shown in  FIG. 14A ; 
       FIG. 15  is a perspective view of a connector carrier of the present invention; 
       FIG. 16  is a top plan view of the connector carrier shown in  FIG. 15 ; 
       FIG. 17  is a perspective view of a standard connector shell; 
       FIG. 18  is an exploded perspective view of the connector carrier of the present invention in operable cooperation with a standard connector shell and a multi-conductor differential and common mode filter; 
       FIG. 19  is a partial perspective view of a further embodiment of a connector surface mount differential and common mode filter carrier of the present invention; 
       FIG. 20  is a partial top plan view of the connector surface mount differential and common mode carrier shown in  FIG. 19 ; 
       FIG. 21A  is a top plan view of a strain relief carrier of the present invention;  FIG. 21B  is a side elevational view in cross section of the strain relief carrier shown in  FIG. 21A  along lines A—A;  FIG. 21C  is a side elevational view in cross section of the strain relief carrier shown in  FIG. 21A  along lines B—B;  FIG. 21D  is a top plan view of the strain relief carrier shown in  FIG. 21A  showing structural folding lines; and  FIG. 21E  is a side elevational view in cross section of the strain relief carrier shown in  FIG. 21D  along lines A—A which include a bracket for receiving the strain relief carrier and differential and common mode filter mounted within the strain relief carrier; 
       FIG. 22A  is a side elevational view of a ground strap carrier of the present invention;  FIG. 22B  is a perspective view of the ground strap carrier including a differential and common mode filter;  FIG. 22C  is a side elevational view of an alternate embodiment of the ground strap carrier of the present invention; and  FIG. 22D  is a perspective view of the ground strap carrier shown in  FIG. 22C  including a differential and common mode filter; 
       FIG. 23  is a side elevational view in cross section of the ground strap carrier shown in  FIGS. 22A–D  in operable coupling with an electric motor; 
       FIG. 24A  is a top plan view of a motor filter carrier of the present invention;  FIG. 24B  is a side elevational view in cross section of the motor filter carrier shown in  FIG. 24A ; and  FIG. 24C  is a bottom plan view of the motor filter carrier shown in  FIGS. 24A and 24B ; 
       FIG. 25A  is a bottom plan view of an alternate embodiment of the motor filter carrier of the present invention;  FIG. 25B  is a side elevational view in cross section of the motor filter carrier shown in  FIG. 25A  along lines B—B;  FIG. 25C  is a top plan view of the motor filter carrier shown in  FIGS. 25A and 25B ; and  FIG. 25D  is a side elevational view in cross section of the motor filter carrier shown in  FIG. 25C  along lines A—A; 
       FIG. 26A  is a top plan view of an alternate embodiment of the motor filter carrier of the present invention comprised of multiple layers;  FIG. 26B  is a side elevational view of the motor filter carrier shown in  FIG. 26A ;  FIG. 26C  is a bottom plan view of the motor filter carrier shown in  FIG. 26A ;  FIG. 26D  is a side elevational view in cross section of the motor filter carrier shown in  FIG. 26C  along lines B—B;  FIG. 26E  is a top plan view of an intermediate layer of the motor filter carrier shown in  FIG. 26A ; and  FIG. 26F  is a side elevational view in cross section of the motor filter carrier shown in  FIG. 26E  along lines C—C; 
       FIG. 27A  is a top plan view of a carrier electrical circuit conditioning assembly of the present invention; and  FIG. 27B  is a side elevational view of the carrier electrical circuit conditioning assembly shown in  FIG. 27A ; and 
       FIG. 28A  is a top plan view of a carrier electrical circuit conditioning assembly applied to a crystal base portion of a crystal component;  FIG. 28B  is a side elevational view of the carrier electrical circuit conditioning assembly applied to a crystal base portion of a crystal component shown in  FIG. 28A ;  FIG. 28C  is a front elevational view of the carrier electrical circuit conditioning assembly enclosed in a crystal component application shown in  FIG. 28B  with a metal enclosure; and  FIG. 28D  is a side elevational view of the carrier electrical circuit conditioning assembly enclosed in a crystal component application shown in  FIG. 28C . 
   

   DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     FIG. 1  shows the present invention in its simplest form. Component carrier  132  is shown coupled with a differential and common mode filter  130  having thru-hole leads  140  for electrical coupling to carrier  132 . Differential and common mode filter  130  is disclosed in application Ser. Nos. 08/841,940; 09/008,769; and 09/056,379, incorporated herein by reference. Briefly, the structure of differential and common mode filter  130  will be described. Filter  130  consists of a first electrode  136  and a second electrode  138  which are separated by and electrically isolated from a plurality of ground layers  134  and each other. The particular architecture creates a line-to-line capacitor and two line-to-ground capacitors which provide for differential and common mode filtering and decoupling. 
   Filters  130  may comprise a plurality of common ground conductive plates and at least two electrodes each having at least one conductive plate, each electrode&#39;s plate or plates being sandwiched between two common ground conductive plates. Examples of such filters are shown in application 08/841,940 and 09/008,769. 
   Because filter  130  is a somewhat fragile component, component carrier  132  provides a physical support to which filter  130  is electrically coupled. The first and second electrodes  136  and  138  each have conductive leads  140  which are inserted into apertures  148  of conductive pads  144 . Each conductive pad  144  is electrically isolated from the conductive surface  142  of component carrier  132  by insulating bands  146 . Not only does component carrier  132  provide additional physical strength to differential and common mode filter  130  but it also acts as a ground shield which substantially improves the electrical characteristics of filter  130 . When filter  130  is properly coupled to carrier  132  the plurality of ground layers  134  are electrically coupled to one another and then coupled to conductive surface  142  by any number of means known by those of ordinary skill in the art. One common means of electrical coupling is through the use of solder  150  points connecting portions of the ground layers  134  to conductive surface  142 . One advantage to the relatively large conductive surface  142  of component carrier  132  is that if cracks  152  or electrical openings form on conductive surface  142  its shielding effect is not lost. 
   A more specific embodiment of the present invention illustrated in  FIG. 2  is surface mount component carrier  10  for maintaining a ceramic planar surface mount electrical component, such as a differential and common mode filter as is disclosed in application Ser. Nos. 08/841,940; 09/008,769; and 09/056,379, incorporated herein by reference. Carrier  10  is a disk comprised of an insulator  14 , such as ceramic, having at least two apertures  18 . Insulator  14  is covered by a conductive metalized ground surface  16 , at least two conductive pads  24  surrounding apertures  18 , and insulating bands  22  surrounding each conductive pad  24 . Throughout the written description “insulator” or “insulating material” may also be referred to as “planar insulator.” Insulating bands  22  separate and electrically isolate conductive pads  24  from metalized ground surface  16 . In the top plan view of carrier  10 , shown in  FIG. 3 , the preferred embodiment of the invention is circular in shape with square insulating bands  22  surrounding partially rounded conductive pads  24 . Carrier  10  and its various elements can be formed into many different shapes and Applicant does not intend to limit the scope of the invention to the particular shapes shown in the drawings. 
   Referring again to  FIG. 2 , in the preferred embodiment, metalized ground surface  16  covers a substantial portion of the top and sides of carrier  10 . Through-hole plating  20  covers the inner walls of aperture  18  and electrically couples to the corresponding conductive pad  24 . Through-hole plating  20  provides greater surface area for electrical coupling of conductors  34  to conductive pads  24  as the conductors  34  are disposed through apertures  18 . The configuration of metalized ground surface  16 , insulating bands  22  and conductive pads  24  provide the necessary contacts for connecting a surface mount component, such as differential and common mode filter  12 , to the upper surface of carrier  10 , which in turn provides electrical connection between conductors  34  and surface mount component  12 . The surface mount components referred to, such as differential and common mode filter  12 , are provided in standard surface mount packages which include a number of solder terminations for electrically coupling the device to external circuitry or in this case to carrier  10 . Filter  12  includes first differential electrode band  28  and second differential electrode band  30  extending from either end of filter  12 . 
   Extending from the center of filter  12  is at least one and more typically two, common ground conductive bands  26 . An insulated outer casing  32  electrically isolates first and second differential electrode bands  28  and  30  and common ground conductive bands  26  from one another. A top plan view of a standard surface mount device as just described is shown in  FIG. 20  as differential and common mode filter  104 . The filter  104  is comprised of first differential conductive band  116 , second differential conductive band  118  and two common ground conductive bands  120 . The insulated outer casing  122  separates and electrically isolates each of the various conductive bands from one another. 
     FIG. 2  shows filter  12  positioned upon the top surface of carrier  10  so that the common ground conductive bands  26  come in contact with the portion of the metalized ground surface  16  which separates both of the insulating bands  22  from one another. This is accomplished by positioning differential and common mode filter  12  lengthwise between the two conductive pads  24  such that first differential electrode band  28  is in contact with one of the two conductive pads  24  and second differential electrode band  30  comes in contact with the other conductive pad  24 . Once filter  12  has been positioned, by default, insulated outer casing  32  of filter  12  aligns with portions of insulating bands  22  thereby maintaining electrical isolation between the various conductive and electrode bands of filter  12 . First and second differential conductive bands  28  and  30  and the common ground conductive bands  26  consist of solder terminations found in typical surface mount devices. Once filter  12  is positioned upon carrier  10  standard solder reflow methods are employed causing the solder terminations to reflow thereby electrically coupling and physically bonding filter  12  to carrier  10 . Customary solder reflow methods which can be used include infrared radiation (IR), vapor phase and hot air ovens or any other means which can be used to expose the solder to sufficiently elevated temperatures. 
   Once differential and common mode surface mount filter  12  is coupled to carrier  10 , the combination of the two parts can be manipulated, either manually or through various types of automated equipment, without subjecting filter  12  to mechanical and physical stresses normally associated with the handling of miniature and delicate electronic components. 
   Once coupled to carrier  10 , filter  12  is electrically connected to external circuitry through conductors  34  which may consist of wire leads or lengths of flexible wire. Once disposed through apertures  18 , conductors  34  are soldered to conductive pads  24  and within apertures  18 . Thru-hole plating  20  allows solder applied to conductive pads  24  and conductors  34  to flow into apertures  18  thereby adhering to the thru-hole plating. 
   Component carrier  10  reduces mechanical and physical stresses such as shock, vibration and various thermal conditions which filter  12  would otherwise be subjected to and provides a complete ground shield for filter  12 . Because carrier  10  has a greater surface area then filter  12  and a substantial portion of that surface area is covered by metalized ground surface  16 , carrier  10  acts as a ground shield which absorbs and dissipates electromagnetic interference and over voltages. These added benefits improve the overall functional performance and characteristics of filter  12 . 
     FIGS. 4 and 5  illustrate a further alternate embodiment of the present invention, that being double-sided carrier  40 . Carrier  40  is identical to carrier  10 , as shown in  FIG. 2 , except that carrier  40  is double-sided and as a bottom surface which is substantially identical to the top surface. This configuration allows two differential and common mode surface mount filters  12   a  and  12   b  to be mounted to the upper and lower surfaces of carrier  40 . As illustrated in  FIG. 4 , metalized ground surface  16  covers substantial portions of the top, sides and bottom of carrier  40  providing a greater overall surface area. The increased surface area of metalized ground surface  16  imparts greater shielding characteristics in carrier  40  which absorb and dissipate electromagnetic interference. In addition, both the top and bottom of carrier  40  include corresponding conductive pads  24  which are electrically connected to one another by thru-hole plating  20  which covers the inner walls of apertures  18 . 
   Double-sided carrier  40  is also advantageous in that it allows for flexibility needed to meet electromagnetic interference (EMI) and surge protection requirements simultaneously through integration of different surface mount components on the same carrier substrate. As an example, a differential and common mode filter. as previously described, could be coupled to the top of carrier  40  while a MOV device could be coupled on the bottom of carrier  40  effectively placing the filter and MOV devices in parallel to provide EMI and surge protection in one compact, durable package. Because carrier  40  provides a rigid base for maintaining various electronic surface mount components, the components themselves are subjected to less physical stress during manufacturing processes which in turn increases yields and lowers manufacturing costs. 
     FIG. 5  shows a modified configuration of metalized ground surface  16 . conductive pads  24  and insulating bands  22 . In this alternative embodiment, insulating bands  22  have been substantially increased such that the surface area of carrier  40  is substantially covered by insulation as opposed to a metalized ground surface. This configuration can be used when decreased shield characteristics are desired or the particular interaction between carrier  40  and the surface mount component needs to be precisely controlled. 
   One example is when parasitic capacitance values must be maintained below a certain level. Note that the particular shapes of insulating bands  22 , shown in  FIG. 5 , are not necessary. All that is required is that the surface area covered by metalized ground surface  16  be varied which in turn varies the electrical characteristics of double-sided carrier  40 . It should also be noted that the surface pattern shown in  FIG. 3  can be used with the double-sided carrier  40 , shown in  FIG. 4 , or the surface pattern shown in  FIG. 5  could just as easily be used with carrier  10 , shown in  FIG. 2 . To obtain further of control the electrical characteristics of double-sided carrier  40 , one surface could be configured as shown in  FIG. 5  while the other surface, either top or bottom, could be configured as shown in  FIG. 3 . Altering the upper and lower surface patterns of double-sided carrier  40  depending upon the types of surface mount components coupled to carrier  40  allows for obtaining optimal electrical characteristics as needed. 
     FIGS. 6 through 9  illustrate further alternate embodiments of the single and double sided carriers benefit to embedding conductive core  38  within insulator  14  and electrically connecting conductive core  38  to metalized ground surface  16  is that a greater surface area is provided for absorbing and dissipating electromagnetic interference and over voltages without an increase in the overall dimensions of carrier  50 . 
     FIGS. 8 and 9  disclose a further alternate embodiment of the present invention in double-sided carrier  60 . Carrier  60  is identical to carrier  50 , shown in  FIGS. 6 and 7 , except that it is double-sided as the embodiment shown in  FIG. 4  with the addition of via  36  disposed through the bottom of carrier  60  electrically coupling metalized ground surface  16  along the bottom of carrier  60  to conductive core  38 . This embodiment provides a ground having an increased surface area to both surface mount differential and common mode filter components  12   a  and  12   b  coupled to the top and bottom of double sided carrier  60 . 
     FIGS. 10A and 10B  show a further embodiment of the component carriers shown in  FIGS. 2–9  configured to accept single and multiple surface mount components and more specifically surface mount differential and common mode filters. As in the numerous embodiments already described, parallel component carrier  160  is a plate or disc comprised of insulating material  14 , such as ceramic, having at least two apertures  18 . 
   Insulating material  14 , also commonly referred to as a planar insulator, is covered by conductive ground surface  16 , at least two conductive pads  24  surrounding apertures  18 , and insulating bands  22  surrounding each conductive pad  24 . Insulating bands  22  separate and isolate conductive pads  24  from conductive ground surface  16 . The primary difference between parallel component carrier  160  and the surface mount component carriers previously described is the arrangement of conductive traces  156  extending from conductive pads  24 . Each conductive pad  24  includes two conductive traces  156  which extend from one side of conductive pad  24  in a generally Y-shaped pattern thereby separating each of the conductive traces  156  from one another. The Y-shaped patterns of conductive traces  156  are arranged on parallel component carrier  160  so the distal ends of each conductive trace  156  is aligned with the distal end of an opposing conductive trace  156 , each extending from opposite conductive pads  24 . In the parallel component carrier  160  embodiment insulating bands  22  surround not only conductive pads  24  but also extending conductive traces  156  of each conductive pad  24  thereby electrically isolating conductive pads  24  and their associated conductive traces  156  from conductive ground surface  16 . 
   Although not required, conductive ground surface  16  is configured to cover as much area upon insulating material  14  as possible in order to provide for maximum electrical shielding within a predetermined area. Due to the Y-configuration of conductive traces  156 , conductive ground surface  16  in the preferred embodiment encompasses a large rectangular portion between the opposing Y-configurations of conductive traces  156  with smaller portions of conductive ground surface  16  extending between the distal ends of opposing conductive traces  156 . 
     FIG. 10B  shows parallel component carrier  160  with differential and common mode filter  500 , as shown in  FIG. 10C , coupled thereto. The surface mount differential and common mode filter  500  has its first differential electrode bands  28  electrically coupled to the distal end of one conductive trace  156 , its second differential electrode bands  30  electrically coupled to the distal ends of the opposing conductive trace  156  and its common ground conductive bands  26  electrically coupled to the portion of conductive ground surface  16  which separates the distal ends of the opposing conductive traces  156 . 
   The electrical coupling of the various electrodes of differential and common mode filter  500  is achieved through means well known in the art including but not limited to soldering. In operation, component carrier  160  receives electrical conductors (not shown) within apertures  18 , which are then electrically coupled to conductive pads  24  through soldering or other methods. 
   The multiple first and second electrode bands  28  and  30  differential and common mode filter  500  are separated by common ground electrode bands  26  and mounted on parallel component carrier  160 . This configuration provides improved filtering and decoupling performance which results in a further reduction of equivalent series inductance (ESL) and equivalent series resistance (ESR). The inter-weaving arrangement of the first and second electrode bands  28  and  30  and the common ground electrode bands  26  optimizes the charge of differential and common mode filter and decoupler  500 . 
     FIG. 10D  shows parallel component carrier  160  with two differential and common mode filters  12  coupled thereto. Each surface mount differential and common mode filter  12  has its first differential electrode band  28  electrically coupled to the distal end of one conductive trace  156 , its second differential electrode band  30  electrically coupled to the distal end of the opposing conductive trace  156  and its common ground conductive bands  26  electrically coupled to the portion of conductive ground surface  16  which separates the distal ends of the opposing conductive traces  156 . The electrical coupling of the various bands of differential and common mode filter  12  is achieved through means well known in the art including but not limited to soldering. In operation, parallel component carrier  160  receives electrical conductors (not shown) within apertures  18 , which are then electrically coupled to conductive pads  24  through soldering or other methods. 
   The configuration of parallel component carrier  160  provides electrical coupling between each electrical conductor (not shown) disposed within apertures  18  and the corresponding first and second differential electrode bands  28  and  30  of differential and common mode filter  12  thereby providing coupling of the electrical conductors with two differential and common mode filters  12  connected in parallel. The parallel differential and common mode filters  12  provide line-to-line and line-to-ground filtering to the electrical conductors due to their internal architecture which provides for an inherent ground even in the absence of conductive ground surface  16 . Once the common ground conductive bands  26  of each filter  12  are electrically connected to conductive ground surface  16  the inherent ground characteristics of filter  12  increase substantially due to the expanded conductive surface area improving the electrical characteristics of both filters  12 . Although not shown, it should be understood that parallel component carrier  160  can also be configured as a double-sided component carrier as disclosed in  FIG. 4  thereby allowing it to accept four differential and common mode filters  12  as opposed to only two as shown in  FIG. 10D . It should also be understood that the invention is not limited to either two or four differential and common mode filters  12 . Multiple filters  12  could be arranged on either side of parallel component carrier  160  in an arrangement similar to that described with the only limitation being the physical space available which is dictated by the size of parallel component carrier  160 . It should also be understood that any of the variations of parallel component carrier  160  can also include a conductive core coupled through vias to conductive ground surface  16  similar to the arrangement shown in  FIG. 8  and described previously. Such an arrangement, including an inner conductive core, provides even greater surface area to the conductive ground surface further increasing the electrical shielding and the overall performance characteristics of the differential and common mode filters  12  coupled to parallel component carrier  160 . 
     FIGS. 11–14  illustrate further alternate embodiments of the component carriers of the present invention which receive a plurality of differential and common mode filters  12  for use in connector and prototype assemblies. Referring to  FIG. 11A , multi-chip component carrier  170  is shown which is configured for use in electrical connectors such as D-sub connectors. As in previous embodiments of the present invention, multi-chip component carrier  170  is built upon insulating material  172 . Most of the surface area of component carrier  170  consists of insulating material  172 .  FIGS. 11B and 11C , which disclose cross-sections of component carrier  170 , show that ground layer  174  is embedded within insulating material  172  and spans the majority of the area of component carrier  170 . Ground layer  174  is conductive and typically consists of a metallic material, although any type of conductive matter could be substituted. In addition to ground layer  174  being embedded within component carrier  170 , the peripheral edges of component carrier  170  also include conductive surfaces  176  which are electrically coupled to ground layer  174 . The internal ground layer  174  of component carrier  170  is also electrically connected to a plurality of vias  182  which extend to conductive pads  180  formed on the surface of component carrier  170 . As is well known in the art, vias  182  include conductive plating which electrically connects conductive pads  180  to ground layer  174 , which in turn is electrically coupled to peripheral conductive surface  176 . Also disposed in component carrier  170  are a plurality of feed-thru apertures  178  which are electrically isolated from internal ground layer  174  by insulation  188 . Formed around the various feed-thru apertures  178  are first and second electrode pads  184  and  186 . Each first electrode pad  184  is formed in a predetermined position in relation to a corresponding second electrode pad  186  wherein the combination of first and second electrode pads  184  and  186  include a via  182  positioned there between. 
   As shown in  FIG. 11A , the plurality of differential and common mode filters  12  are positioned between the first and second electrode pads  184  and  186  in a lengthwise orientation such that first differential electrode band  28  comes in contact with first electrode pad  184  and a second differential electrode band  30  comes in contact with second electrode pad  186 . Vias  182  are positioned between first and second electrode pads  184  and  186  so that conductive pads  180  of vias  182  come in contact with common ground conductive bands  26  of the differential and common mode filters  12 . The various conductive bands of each filter  12  are physically and electrically coupled to their respective conductive pads through soldering or other well known means. In operation, multi-chip component carrier  170  is placed over and receives within its plurality of feed-thru apertures  178  male pins (not shown) associated with standard D-sub connector assemblies. The plurality of pins are then electrically coupled to the plurality of first and second electrode pads  184  and  186  through standard means. In alternate embodiments feed-thru apertures  178  are plated with a conductive surface electrically connected to its associated first or second electrode pad  184  and  186  such that when the D-sub connector assembly pins (not shown) are inserted within feed-thru apertures  178  the physical contact between the pins and the conductive surfaces provides the necessary electrical coupling. 
     FIG. 12  shows a further embodiment of the present invention consisting of a differential and common mode strip filter carrier  200 . Differential and common mode strip filter  202  is disclosed in commonly owned, application Ser. Nos. 08/841,940; 09/008,769; and 09/056,379, incorporated herein by reference. As in previous embodiments, strip filter carrier  200  is constructed upon a plate or block of insulating material  216  and includes a plurality of feed-thru apertures  204  which receive male pins (not shown) from a connector assembly such as an RJ-45 connector. Referring to  FIG. 12A , the top surface of carrier  200  includes conductive surface  210  running along the four edges of the top surface with portions of conductive surface  210  extending inward in a predetermined pattern. Conductive surface  210  is electrically coupled to peripheral conductive surface  208  which surrounds the four sides of carrier  200 , which is then electrically coupled to conductive surface  206 . Conductive surface  206  covers the majority of the area of the bottom surface of strip filter carrier  200  as shown in  FIG. 12B . 
   Each feed through aperture  204 , as shown in  FIG. 12A , includes a conductive track extending from aperture  204  towards the center of strip filter carrier  200  in a predetermined pattern. A portion of differential and common mode strip filter  202  is shown positioned upon the top surface of carrier  200  to demonstrate its coupling to strip filter carrier  200 . Common ground conductive band  218  of filter  202  comes in contact with conductive surface  210  that runs along the longitudinal ends of strip filter carrier  200 . The predetermined positioning of the first and second differential electrode bands  220  and  222  of filter  202  align with their corresponding conductive tracks  226  and the common ground conductive bands  218  align with the inward extending conductive surfaces  210 . As described in the previous embodiments, the conductive bands are electrically connected to their corresponding conductive tracks and conductive surfaces through means including but not limited to soldering. As shown in  FIG. 12B , feed-thru apertures  204  are surrounded by conductive bands  214  which, in turn, are then electrically isolated from conductive surface  206  by insulation bands  212 . As shown in  FIG. 12C , a substantial area of conductive surface  206  is electrically coupled through peripheral conductive surfaces  208  to conductive surface  210 , which in turn is electrically coupled to common ground conductive band  218  of strip filter  202 . This arrangement provides for the increased shielding and improved electrical characteristics of differential and common mode strip filter  202  previously described in relation to alternate embodiments of the present invention. 
   In use carrier  200  is placed over and receives within feed-thru apertures  204  a plurality of male pins (not shown) from a connector assembly. Feed-thru apertures  204  include a conductive surface plating so that each conductive track  226  is electrically coupled to its corresponding conductive band  214 . Either through soldering or a conductive resistive fit, each male pin (not shown) is electrically coupled to its corresponding first or second differential electrode band  220  and  222  of differential and common mode strip filter  202 . 
     FIGS. 13A–13C  show a further alternate embodiment of the present invention. 
     FIGS. 13A and 13B  disclose differential and common mode strip filter carrier  230  having most of the top and bottom surface area composed of insulating material  216  with only a small border of conductive surface  210  surrounding the outer edges of both the top and bottom surface of strip filter carrier  230 . Conductive surface  210  also surrounds the sides of strip filter carrier  230  and electrically couples to the conductive surface  210  running along the edges of both the top and bottom surfaces. Referring to  FIG. 12A , conductive surface  210  also includes portions which extend inward toward the center of the top surface of strip filter carrier  230  in a predetermined pattern. Although not shown, strip filter carrier  230  is configured to receive differential and common mode strip filter  202  as shown in  FIG. 12A . 
   One difference in strip filter carrier  230  from component carrier  200  as disclosed in  FIGS. 12A–12C  is that ground layer  234  is now embedded within insulating material  216  and electrically coupled to conductive surfaces  210 , which run along the sides of strip filter carrier  230 , and through vias  232 . Ground layer  234  is also electrically coupled to conductive surface  210  through vias  232  disposed within the inwardly extending portions of conductive surface  210  on the top surface of strip filter carrier  230 . Again, strip filter carrier  230  includes feed-thru apertures  204  having a conductive surface plating which electrically couples conductive tracks  226  on the top surface of strip filter carrier  230  to conductive bands  214  on the bottom surface of strip filter carrier  230 . Male pins (not shown) from a connector assembly are received within feed-thru apertures  204  allowing for electrical coupling to the various first and second differential electrode bands of differential and common mode strip filter  202  (not shown). As shown in  FIG. 13C , each feed-thru aperture  204  is surrounded by insulation  224  electrically isolating the male pins inserted through apertures  204  from the internal ground layer  234  of strip filter carrier  230 .  FIGS. 11–13  demonstrate that a variety of component carrier configurations are contemplated by applicant which include embodiments for receiving different component packages for differential and common mode filters. In addition, various configurations of the conductive surface or ground layer are envisioned which provide for additional electrical shielding and substantially improve the electrical characteristics and performance of the differential and common mode filters attached to the carriers. 
     FIGS. 14A–14D  illustrate a multi-component differential and common mode filter prototype carrier  240  which allows use of a plurality of differential and common mode filters  12  in combination with the benefits provided by the component carriers as described herein. At the same time prototype carrier  240  allows for additional circuitry to be coupled to carrier  240  and filters  12  in a convenient and flexible manner allowing engineers to easily incorporate the technology described into a vast array of electronic products. Prototype carrier  240  is constructed in a similar manner to that of the many previously described embodiments. Prototype carrier  240  consists of a plate of insulating material  242  having predetermined configurations of conductive surface  244  along its top and bottom surfaces and electrically interconnected by peripheral conductive surface  246  which surrounds the sides of prototype carrier  240 . Positioned upon both the top and bottom surfaces of prototype carrier  240  are a plurality of smaller conductive surfaces  250  which in turn are surrounded by insulating material  242  electrically isolating conductive surfaces  250  from conductive surfaces  244 . 
   As shown in  FIG. 14A , differential and common mode filter  12  is positioned lengthwise between two corresponding conductive surfaces  250  such that first differential electrode band  28  comes into physical contact with one conductive surface  250 , second differential electrode band  30  comes in contact with a second and corresponding conductive surface  250  and common ground conductive bands  26  come in physical contact with conductive surface  244  which separates the two corresponding conductive surfaces  250 . As in previous embodiments, the various bands of filter  12  are electrically coupled to their respective conductive surfaces through soldering and other common means. To provide the versatility required to interconnect additional electronic components to prototype carrier  240  and differential and common mode filter  12 , a plurality of apertures  248  are disposed within conductive surfaces  250  and insulating material  242 . To use prototype carrier  240  various external electrical components or wires are disposed within apertures  248  and then permanently connected through soldering or other means. Prototype carrier  240  is essentially a “bread board” which electrical engineers use to configure test circuits. Although not shown, it should be understood and applicant contemplates that the prototype carrier  240  disclosed in  FIGS. 14A–14D  could be configured with an internal ground layer electrically coupled to conductive surfaces  244  through vias as disclosed previously in  FIGS. 11 and 13 . This arrangement would provide for greater effective surface area with increased shielding effects. 
   Illustrated in  FIGS. 15 through 18  is a further alternate embodiment of the component carriers of the present invention used to receive and maintain a multiconductor thru-hole filter within a multi-conductor connector shell. Connector carrier  70 , shown in  FIGS. 15 and 16 , is comprised of wall  78  formed in the shape of a parallelogram or D-shape having a shelf  76  extending inward from wall  78  along the bottom of all four sides. Wall  78  includes a plurality of outwardly extending protuberances  72  which act as spring or resistive fit contacts for carrier  70  as will be further described.  FIG. 17  shows a standard D-sub connector shell  74  which includes outwardly extending front wall  88  shaped in the form of a parallelogram or D-shape. Shell  74  has a shelf  86  extending inwardly from the bottom of wall  88  which acts as a stop and a mounting shelf for carrier  70 . 
     FIG. 18  shows an exploded prospective view of D-sub connector shell  74 , connecter carrier  70  and multi-conductor differential and common mode filter  80 . While carrier  70  can be used with a variety of filters, Applicant contemplates multi-conductor filter  80  being a differential and common mode multi-conductor filter as disclosed in application Ser. Nos. 08/841,940; 09/008,769; and 09/056,379, previously incorporated herein by reference. Filter  80  includes a plurality of apertures  84  which receive contact pins (not shown) associated with male D-sub connectors commonly known in the art. 
   One example of such a connector is a male D-sub RS-232 communications connector found in personal computers for coupling external devices such as modems to the computers. To be used in this embodiment of carrier  70 , filter  80  must also be formed in the shape of a parallelogram or D-shape and have dimensions similar to those of carrier  70 . Filter  80  includes plated surface  82  along its periphery which is electrically connected to the common ground conductive plates of filter  80 . In use, conductor carrier  70  receives multi-conductor filter  80  which abuts against inner shelf  76 . Shelf  76  is coated with a solder reflow or an equivalent conductive surface so that once filter  80  is inserted into carrier  70  and resting upon shelf  76 , standard reflow methods can be used to solder filter  80  within carrier  70 . Such standard reflow methods include the use of infrared radiation (IR), vapor phase and hot air ovens. The subassembly of filter  80  and carrier  70  is then inserted within D-sub connector shelf  74  so the subassembly is contained within wall  88  and abutted against shelf  86  which serves as a stop for carrier  70 . Connector carrier  70  is fabricated from a conductive material such as metal and, to obtain the full benefits of the present invention, D-sub connector shell  74  will also be fabricated from a conductive metallic material. The plurality of protuberances  72  provide a resistive fit for carrier  70  against wall  88  of D-sub connector shelf  74  which maintains carrier  70  within shell  74  and provides for electrical conduction between plated surface  82  of filter  80  and shell  74 . As in previous embodiments, electrically coupling the ground connection for multi-conductor filter  80  to carrier  70  and D-sub connector shell  74  increases the surface area provided for absorbing and dissipating electromagnetic interference and over voltages. 
   An additional embodiment of the present invention, connector carrier  100 , is illustrated in  FIG. 19 . In this embodiment the surface mount component carrier is directly incorporated within an electronic connector. Connector carrier  100  is comprised of a metalized plastic base  112  having a plurality of apertures  98  disposed through base  112 , each of which receives a connector pin  102 . Although not shown, portions of each connector pin  102  extends through base  112  and out of the front  110  of connector carrier  100 . The portions of pins  102  extending from the front  110  of carrier  100  form a male connector which is then, in turn, received by a female connector as is known in the art. 
   The same configuration could be implemented on a female connector which then receives male pins. Coupled to both edges of connector carrier  100 , although only one edge is shown, is mounting base  114  which elevates base  112  from a surface such as a printed circuit board. The particular embodiment of connector  100  shown in  FIG. 19  is of a right angle connector in which the tips of pins  102  would be inserted within apertures in a printed circuit board. Pins  102  would then be soldered to the individual apertures or pads in the printed circuit board to provide electrical connection between pins  102  and any circuitry on the printed circuit board. To provide for the coupling of a plurality of differential and common mode filters  104  between the various connector pins  102 , two insulating bands  106  and  107  are provided to electrically isolate each of the connector pins  102  from the metalized plastic base  112  which covers substantially all of the surface area of connector carrier  100 . 
   Referring to  FIG. 20 , the relationship between insulating bands  106  and  107 , metalized plastic base  112  and differential and common mode filter  104  will be explained in more detail. While only one example is shown, both insulating bands  106  and  107  include a plurality of conductive pads  108  which surround apertures  98 . Conductive pads  108  are electrically coupled to connector pins  102  disposed through apertures  98 . 
   Insulating bands  106  and  107  provide a non-conductive barrier between the conductive pads  108  and the metalized plastic base  112 . Surface mount components, such as differential and common mode filter  104 , are positioned between insulated bands  106  and  107  so that first differential conductive band  116  of filter  104  comes in contact with a portion of a conductive pad  108  and second differential conductive band  118  comes in contact with a portion of an opposite conductive pad  108 . Insulated outer casing  122  of filter  104  slightly overlaps onto each insulating band  106  and  107  and metalized plastic base  112  to maintain electrical isolation of first and second differential conductive bands  116  and  118  and metalized plastic base  112  of connector carrier  100 . Because metalized plastic base  112  runs between insulating bands  106  and  107 , common ground conductive bands  120  of filter  104  come in contact with the metalized plastic base  112 . As described earlier, each of the various conductive bands of filter  104  are comprised of solder terminations which, when subjected to known solder reflow methods, physically and electrically couple to any metallic surfaces which they come in contact thereby permanently coupling the surface mount components, i. e. filter  104 , to connector carrier  100 . As in the previous embodiments, connector carrier  100  allows miniature, fragile surface mount components to be used without subjecting those components to increased physical stress which can cause damage to the components, lowering production yields and increasing overall production costs. Metalized plastic base  112  also provides a large conductive surface area connected to the ground terminations of filter  104  improving the ground shield used to absorb and dissipate electromagnetic interference and over voltages. 
   As described herein with relation to each of the differential and common mode filter carrier embodiments, the primary advantages are the additional physical strength the filter carriers provide to the differential and common mode filters and the increased shield and ground effects provided by the enlarged conductive surface areas coupled to the differential and common mode filters.  FIGS. 21A–21E  show strain relief carrier  260  which provides these benefits to differential and common mode filters configured with wire leads  266  as opposed to the various surface mount embodiments. Strain relief carrier  260  is comprised of a conductive material such a metal which is fabricated to create carrier frame  264 . With reference to  FIGS. 21B and 21C , strain relief carrier  260  includes a horizontal component ledge  274  extending inward from vertical wall  272  which completely surrounds and receives differential and common mode filter  262 . Extending from the upper end of vertical wall  272  is member  270  which extends outward to bend  276  with the remainder  278  of member  270  then directed back toward filter  262 . In the preferred embodiment, disclosed in  FIG. 21D , strain relief carrier  260  is formed of a single conductive material in which extended members  270 , vertical walls  272  and component ledge  274  are formed through predetermined bends along the dashed lines. The overall metal carrier frame  264  provides differential and common mode filter  262  with the additional physical strength and support that prevents filter  262  from being damaged in use. In addition, because strain relief carrier  260  is formed of a conductive material it carrier  290  is formed from a single piece of conductive material into two inverted and opposing U-shapes. 
   Differential and common mode filter  12  is received and maintained upon base  292  and between inner protuberance  294  and outer protuberance  296  which provide a tight, resistive fitting for filter  12 . The resistive fitting also forces electrical contact between base  292  and common ground conductive bands  26  of filter  12  as shown in  FIG. 22B . Referring to  FIG. 23 , ground strap carrier  290  and differential and common mode filter  12  are coupled to electric motor housing  304  by hook  308 . Hook  308  is comprised of vertical member  298 , top  300  and vertical member  302  as shown in  FIGS. 22A and 22B . Because ground strap carrier  290  is formed of a conductive material, when it is coupled to an electrical motor, the conductive motor housing  304  provides an enhanced shielding and ground surface area for differential and common mode filter  12  which enhances its shielding and electrical characteristics. Referring to  FIG. 23 , the first and second differential electrode bands  28  and  30  of differential and common mode filter  12  are electrically connected to the motor through spring retention conductors  306  formed within the motor and weaved around motor components  310 .  FIGS. 22C and 22D  disclose an alternate embodiment of ground strap carrier  290  in which base  292  is elongated such that filter  12  can be accepted within carrier  290  in a flat orientation. The flat orientation allows both common ground conductive bands  26  of filter  12  to come in contact with protuberances  294  and  296 . Ground strap carrier  290  provides a means for coupling surface mount differential and common mode filters within electric motors despite the small size and fragile nature of surface mount differential and common mode filters. 
     FIGS. 24A–24C  show a further embodiment of the present invention as motor filter carrier  320 . As in previous embodiments, motor filter carrier  320  is constructed on a base of insulating material  326 , as shown in  FIG. 24B , which can be formed into any shape but in the preferred embodiment is circular to match the shape of most electric motors. Motor filter carrier  320  includes conductive surface  328  which covers most of the top and bottom surfaces of motor filter carrier  320 . Electrically coupling the top and bottom conductive surfaces  328  is peripheral conductive surface  330  which surrounds the sides of motor filter carrier  320  to substantially cover the outer surfaces of motor filter carrier  320  with a conductive ground surface. Disposed through the center of motor filter carrier  320  is aperture  322  which receives a rotor (not shown) of an electric motor. 
   Surrounding aperture  322  is insulation  332  which prevents electrical connection between motor filter carrier  320  and the rotor of the electric motor. Motor filter carrier  320  also includes a plurality of mounting apertures  344  which receive mounting hardware, such as screws, used to physically connect motor filter carrier  320  onto an electric motor. 
   Referring to  FIG. 24A , motor filter carrier  320  includes three conductive apertures  342  which receive corresponding pins  316  from electrical connector  334 . Attached and electrically coupled to each pad  342  is a conductive track  340  which extends from pad  342  towards the center of motor filter carrier  320 . The three conductive tracks  340  are arranged in parallel to receive surface mount differential and common mode filter  12 A. 
   The two outer conductive tracks  340  have insulating material  326  surrounding the conductive track  340  in order to isolate the first and second differential electrode bands  28  and  30  of filter  12 A from everything except their associated conductive tracks  340 . The center conductive track  340  is electrically coupled to conductive surface  328  of motor filter carrier  320  which, in turn, electrically couples common ground conductive bands  26  of filter  12 A to conductive surface  328  of motor filter carrier  320 . Through this arrangement surface mount differential and common mode filter  12 A is physically mounted to the top surface of motor filter carrier  320  with each of its bands electrically connected to each of the conductors  316  of electrical connector  334 . The center pin  316  of electrical connector  334  is electrically coupled to the top and bottom surfaces by feedthru aperture  338  which is plated with a conductive surface or through a direct connection using a metal lead (not shown). 
   Referring to  FIG. 24C , the bottom surface of motor filter carrier  320  includes a similar arrangement of conductive tracks  340  and conductive pads  342  which receive a second surface mount differential and common mode filter  12 B. Differential and common mode filters  12 A and  12 B are electrically connected in parallel by a plurality of feed-thru apertures  338  shown in  FIG. 24B  or by connector pins directly. Each of the connector pins  316  of electrical connector  334  are disposed within feed-thru apertures  338  and electrically connected to a conductive pad  342  on both the top and bottom surfaces of motor filter carrier  320 . The described arrangement allows parallel coupling of surface mount differential and common mode filters  12 A and  12 B which allows both low and high frequency filters to be combined in parallel to electrically condition an electrical motor coupled to motor filter carrier  320 . The bottom surface of motor filter carrier  320 , shown in  FIG. 24C , differs from the top surface in that it includes an enlarged portion of insulating material  326  which electrically isolates two of the three electrical motor brushes  324  from conductive surface  328 . The embodiment of the present invention disclosed in  FIGS. 24A–24C  is configured for use with a three brush electric motor with motor filter carrier  320  replacing a conventional cover of an electric motor. The three brushes  324  come in contact with the bottom surface of motor filter carrier  320  when carrier  320  is coupled to an electrical motor (not shown). As the three bushes  324  are the portions of the electric motor to receive the differential and common mode filter, the bottom surface of motor filter carrier  320  provides electrical coupling to surface mount differential and common mode filters  12 A and  12 B. One of three brushes  324  is electrically coupled to conductive surface  328  by flexible wire braid  356  connected to feed-thru brush aperture  318  and the nearest associated electrical motor brush  324 . To electrically connect the remaining two brushes  324  to the first and second differential electrode bands  28  and  30  of filters  12 A and  12 B, brush contacts  354  comprised of conductive tracks extending from conductive tracks  340  come into physical contact with their respective brushes  324 . 
   Motor filter carrier  320  when coupled with one or more differential and common mode filters  12 A and/or  12 B prevents electric fields generated within the motor, both low and high frequency, from coupling to wires, leads or traces which act as an antennas dispersing electrical noise throughout an electrical system. The present invention replaces known technology which required multiple capacitors, inductors and related circuits in addition to a shield or a protective shell enclosing the motor. Motor filter carrier  320  is particularly advantageous because many smaller electric motors have a plastic or nonmetallic top which allows electrical noise generated within the motor housing to escape or be transmitted out of the motor where it can interfere with other electrical systems. When motor filter carrier  320 , in conjunction with one or more differential and common mode filters  12 , is connected to a conductive enclosure of an electric motor the combination prevents internally generated electrical noise fromescaping. The stray electrical noise is then disposed of by shunting the noise to the conductive motor housing ground connection. The present invention provides a low cost, simple assembly which requires less volume and provides for high temperature EMI performance in one package. 
     FIGS. 25A–25D  show a further alternate embodiment of the present invention as motor filter carrier  350 . The primarydifferences of the present embodiment to that disclosed in  FIG. 24  is that the top and bottom surfaces of motor filter carrier  350  are comprised of insulating material  326  as opposed to a conductive surface. The top surface of motor filter carrier  350 , shown in  FIG. 25C , is essentially identical to the top surface described with respect to  FIG. 24A  except that most of the top surface is comprised of insulating material  326 . The bottom surface of motor filter carrier  350 , shown in FIG. 
     25 A, is also substantially similar to the bottom surface described with respect to  FIG. 24C  except that most of the bottom surface is comprised of insulating material  326 . There are also several other differences which will now be described. Referring to  FIG. 25A , the bottom surface includes two conductive tracks  340  which are electrically coupled to conductors  316  of electrical connector  334 . Electrically coupling each conductive track  340  to its respective electric motor brush  324  are flexible wire braids  348 . In order to achieve the improved shielding and ground benefits, motor filter carrier  350  includes conductive core  346  spanning the circular area of motor filter carrier  350  while being embedded within top and bottom layers of insulating material  326 . Referring to  FIG. 25B , each of the plurality of mounting apertures  344  include conductive surfaces  352  which are electrically coupled to conductive core  346 . When motor filter carrier  350  is placed over one end of an electric motor (not shown) with the rotor being disposed within aperture  322 , the electrical coupling of the conductive housing of the electric motor with conductive core  346  of motor filter carrier  350  is achieved through the use of conductive mounting hardware such as metal screws. The conductive hardware is used to complete an electric circuit or loop between the motor housing mounting apertures  344  and conductive core  346 . It can be seen from  FIG. 25D  that middle conductive pin  316  of connector  334  only extends within motor filter carrier  350  until it comes in contact with conductive core  346  providing electrical coupling between conductive core  346  and common ground conductive bands  26  of surface mount differential and common mode filter  12 . Shown in  FIG. 25B , the remaining conductive pins  316  attached to electrical connector  334  extend through the entire width of motor filter carrier  350  to electrically couple first and second differential electrode bands  28  and  30  to their respective electrical motor brushes  324  using flexible wire braids  348 . Although this particular embodiment does not disclose the use of a second surface mount differential and common mode filter connected to the bottom of motor filter carrier  350 , such an alternate embodiment is contemplated by applicant. For the same reasons applicant also contemplates motor filter carrier  320  shown in  FIGS. 24A–24C  only having a single differential and common mode filter. 
   A third alternate embodiment of the motor filter carriers of the present invention is disclosed in  FIGS. 26A–26F  as motor filter carrier  370 . This embodiment provides the added benefit of having surface mount differential and common mode filter  12  embedded within motor filter carrier  370  thus providing a single component for use in providing differential and common mode filtering and ground shielding to electric motors. As in previous embodiments, motor filter carrier  370  includes an electrical connector  334  coupled to the top surface of motor filter carrier  370  with the top surface covered by conductive surface  328 . Motor filter carrier  370  also includes a plurality of mounting apertures  344  and aperture  322  disposed through motor filter carrier  370 . Aperture  322  is electrically isolated from conductive surface  328  by insulation  322 . The bottom surface of motor filter carrier  370 , as shown in  FIG. 26C , is also covered by conductive surface  328  which is electrically connected to conductive surface  328  on the top of motor filter carrier  370  by peripheral conductive surface  330  surrounding the sides of motor filter carrier  370 . As in the previous embodiments, electric motor brushes  324  come in connect with the bottom surface of motor filter carrier  370  and are electrically coupled to surface mount differential and common mode filter  12  by flexible wire braids  348 . The central difference of the present embodiment is the inclusion of internal layer  360  to which surface mount differential and common mode filter  12  is physically coupled. Internal layer  360  is comprised of insulating material  326  and includes a plurality of conductive tracks deposited on the surface of internal layer  360  used to electrically couple the various bands of differential and common mode filter  12  to electric motor brushes  324 . Referred to  FIG. 26E , internal layer  360  includes first conductive track  372 , second conductive track  374  and ground conductive track  376 . Each conductive track is electrically coupled to one of the conductive pins  316  extending from electrical connector  334 . Surface mount differential and common mode filter  12  is placed on top of internal layer  360  in a predetermined position such that conductive track  372  is electrically coupled to second differential electrode band  30  and conductive track  374  is electrically connected to first differential electrode band  28 . Conductive track  376  comes in contact with and is electrically coupled to common ground conductive bands  26  of filter  12 . Each of the conductive tracks,  372 ,  374  and  376 , come in contact with and surround one or more feed-thru apertures  338  which provide electrical coupling to the plurality of brushes  324 . 
   Each of the feed-thru apertures  338  are covered with a conductive surface so flexible wire braid  348  connects brushes  324  to filter  12  when soldered within feed-thru apertures  338 . 
   Although not shown, the present embodiment could be combined with the previous motor filter carrier embodiments in any number of combinations including having surface mount differential and common mode filters coupled to an internal layer and both top and bottom surfaces thereby providing even more versatility and filtering capability  FIGS. 27A and 27B  show the carrier electrical circuit conditioning assembly  400  which resulted from the combination of the previously described component carriers with the differential and common mode filter  12 . Shown in  FIG. 27A , differential and common mode filter  12  is placed upon conductive ground surface  402  making physical contact between conductive ground surface  402  and common ground conductive electrode bands  26 . First and second differential conductive bands  30  and  28  are placed upon insulation pads  408  with differential signal conductors  404  and  406  disposed through each insulation pad  408 . First differential electrode band  28  and first differential signal conductor  404  are then further coupled physically and electrically to each other through a well known means in the art such as solder  410 . In addition, second differential electrode band  30  and second differential signal conductor  406  are coupled physically and electrically to one another and common ground conductive electrode bands  26  are coupled physically and electrically to ground area  402 . 
   The internal construction of differential and common mode filter  12  electrically isolates differential signal conductor  404  and first differential electrode band  28  from second differential signal conductor  406  and second differential electrode band  30 . The internal construction of the differential and common mode filter  12  creates a capacitive element coupled between the first and second differential signal conductors  404  and  406  and creates two capacitive elements, one coupled between the first differential signal conductor  404  and the common conductive ground surface  402  and the other coupled between the other second differential signal conductor  406  and the common conductive ground surface  402 . While this arrangement of line-to-line and line-to-ground filtering is occurring the first and second differential signal conductors  404  and  406  remain electrically isolated from one another. 
   From  FIG. 27B  it can be seen that first and second differential electrode bands  28  and  30  are prevented from coming into direct physical contact with conductive ground surface  402  due to insulating pads  408  interposed between differential signal conductors  404  and  406  and the conductive ground surface  402 . 
   The combination of the differential and common mode filter  12  with its capacitive elements coupled line-to-line between differential signal conductors  404  and  406  and line-toground between the differential signal conductors  404  and  406  and conductive ground surface  402  provides substantial attenuation and filtering of differential and common mode electrical noise. At the same time the combination also performs simultaneous differential line decoupling. Another benefit provided by the combination include mutual cancellation of magnetic fields generated between differential signal conductors  404  and  406 . By connecting the common ground conductive electrode bands  26  to a large conductive ground surface  402 , increased shielding of the ground plane is provided to differential and common mode filter  12  which further enhances the desired functional characteristics of differential and common mode filter  12 . 
   The combination of the differential and common mode filter  12  with the internal partial Faraday-like shields electrically connected to conductive ground surface  402  cause noise and coupling currents from different elements of carrier electrical circuit conditioning assembly  400  to be contained at their source or to conductive ground surface  402  without affecting differential signal conductors  404  and  406  or other elements of carrier electrical circuit conditioning assembly  400  when differential and common mode filter  12  is attached between differential signal conductors  404  and  406 . Carrier electrical circuit conditioning assembly  400  reduces, and in some cases eliminates, forms of capacitor parasitics and stray capacitance between differential signal conductors  404  and  406 . Differential and common mode filter  12  provides these benefits due to its internal, partial Faraday-like shields that almost envelope the internal differential electrodes of differential and common mode filter  12  which connect to ground conductive electrode bands  26 . These benefits are significantly increased when the partial Faraday-like shields are electrically connected by ground conductive electrode bands  26  to conductive ground surface  402 . 
     FIGS. 28A–28D  show one application of carrier electrical circuit conditioning assembly  400  used in conjunction with a crystal. Referring to  FIG. 28B , differential and common mode filter  12  is physically and electrically coupled between first and second differential signal conductors  404  and  406  and to ground conductive surface  402 . In this particular application ground conductive surface  402  is comprised of the metal base of the crystal, which in turn is connected to a metal cover  415  shown in  FIGS. 28C and 28D . First and second differential signal conductors  404  and  406  of carrier electrical circuit conditioning assembly  400  are electrically isolated from ground conductive surface  402  by insulation pads  408 . Common ground conductive electrode bands  26  are electrically connected to ground conductive surface  402  using solder  410  or other similar means. A ground conductor pin  414  is also attached or molded monolithically to conductive ground surface  402  by soldering, welding or casting. Ground conductor pin  414  allows for further connection of crystal component application  416  to a system ground (not shown). The internal construction of the differential and common mode filter  12  creates a capacitive element coupled between the first and second differential signal conductors  404  and  406  and creates two capacitive elements, one coupled between the first differential signal conductor  404  and ground conductive surface  402  and the other coupled between the other second differential signal conductor  406  and ground conductive surface  402 . While this arrangement of line-to-line and line-to-ground filtering is occurring the first and second differential signal conductors  404  and  406  remain electrically isolated from one another. From  FIG. 28B  it can be seen that first and second differential electrode bands  28  and  30  are prevented from coming into direct physical contact with ground conductive surface  402  due to insulating pads  408  interposed between differential signal conductors  404  and  406  and the ground conductive surface  402 . 
     FIGS. 28C and 28D  show the final combination of crystal component assembly  416  and its metal housing  415  which provides an additional ground shield for the combination. 
   The carrier electrical circuit conditioning assembly  400  shown in crystal component assembly  416  simultaneously filters and attenuates common mode and differential mode electrical noise attributed to such circuitry including such noise found between differential electrical line conductors  404  and  406 . Crystal component assembly  416  can also substantially reduce and in some cases eliminate or prevent differential current flow, mutual inductive coupling such as cross talk and ground bounce between either differential electrical line conductor  404  and  406 . The carrier electrical circuit conditioning assembly  400  also simultaneously provides mutual cancellation of opposing magnetic fields attributed to and existing between differential electrical line conductors  404  and  406 . In addition, carrier electrical circuit conditioning assembly  400  complements the inherent, internal ground structure and internal shield structures that nearly envelope or surround each opposing electrode within differential and common mode filter  12  to substantially improve overall noise attenuation on differential signal conductors  404  and  406  that would otherwise affect and degrade the desired performance of crystal component application  416 . The essential elements of carrier electrical circuit conditioning assembly  400  consist of differential and common mode filter and decoupler  12  as defined herein with a capacitive element coupled between the first and second differential signal conductors  404  and  406  and two capacitive elements, one coupled between the first differential signal conductor  404  and ground conductive surface  402  and the other coupled between the other second differential signal conductor  406  and ground conductive surface  402  while maintaining electrical isolation between the first and second differential signal conductors  404  and  406 ; at least two energized differential electrical line conductors; and a physical and electrical coupling of common ground conductive electrode bands  26  of differential and common mode filter  12  to ground conductive surface  402 . The various elements listed that make up carrier electrical circuit conditioning assembly  400  are interconnected using solder  410 , conductive epoxy  417  or other means well known in the art. 
   Although the principles, preferred embodiments and preferred operation of the present invention have been described in detail herein, this is not to be construed as being limited to the particular illustrative forms disclosed. They will thus become apparent to those skilled in the art that various modifications of the preferred embodiments herein can be made without departing from the spirit or scope of the invention as defined by the appended claims. The numerals in claims  1 – 18  presented below refer to the elements in figures in U.S. patent application publication No. 2003/0048029, which is incorporated herein by reference. Claims  1 – 18  are copied from U.S. patent application publication No. 2003/0048029 herein for purposes of interference.