Ground bus for cable card assembly of electrical connector
By introducing the ground bus and conductive washer design into the cable card assembly, the problem of signal integrity and electrical performance at the electrical connector interface is solved, and better signal shielding effect and electrical performance improvement are achieved.
Patent Information
- Application Number
- CN202410927717.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2023-07-13
- Filing Date
- 2024-07-11
- Publication Date
- 2025-01-14
AI Technical Summary
The signal integrity and electrical performance of the electrical connectors at the interface between the cable and the circuit card are affected, and the shape and gaps of existing shields lead to poor shielding effectiveness.
A cable card assembly is designed, including a circuit card, a signal conductor and a ground bus. The signal conductor is electrically connected to the corresponding circuit conductor of the circuit card. The ground bus is connected to the internal and external bus components through a conductive washer to provide electrical shielding and enhance the cable card. Electrical performance of components.
Through the design of the ground bus, the signal shielding effect of the cable card assembly is significantly improved, crosstalk is reduced, and electrical performance is improved.
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Figure CN119315332A_ABST
Abstract
Description
Technical Field
[0001] The subject matter herein relates generally to electrical connectors. Background Art
[0002] Electrical connectors are commonly used to electrically connect various types of electrical devices to transmit signals between the devices. At least some known cable assemblies have cables between electrical connectors that are connected to corresponding electrical devices. Each cable has a signal conductor or a differential pair of signal conductors surrounded by a shielding layer, which is in turn surrounded by a cable jacket. The shielding layer includes a conductive foil, the function of which is to shield (multiple) signal conductors from electromagnetic interference (EMI) and generally improve performance. A drain wire can be disposed within the cable and electrically connected to the conductive foil. At one end of the communication cable, the cable jacket, shielding layer, and insulator covering (multiple) signal conductors can be removed (e.g., stripped) to expose (multiple) signal conductors and drain wires. Then, the exposed portion of the (multiple) signal conductor is mechanically and electrically connected (e.g., welded) to a corresponding conductor, such as a signal pad of a circuit card. The exposed portion is bent and manipulated between the insulator and the signal pad on the circuit card.
[0003] However, the signal integrity and electrical performance of the electrical connector are negatively impacted at the interface between the cable and the circuit card. For example, as the signal conductors transition to the circuit card, the cable shield no longer shields the exposed portions of the signal conductors, which affects signal integrity and adversely affects performance. A shield may be provided to cover the ends of the cable. However, based on the shape of the shield and the gaps or openings in the shield, the shielding effectiveness may be poor.
[0004] Therefore, there is a need for an electrical connector having an improved shielded interface with a circuit card. Summary of the invention
[0005] According to the present invention, a cable card assembly for an electrical connector is provided, the cable card assembly comprising a circuit card having an array of circuit conductors on a surface of the circuit card. The circuit card has a ground plane. The cable card assembly comprises a cable terminated to the circuit card. The cable comprises a signal conductor and a cable shield surrounding the corresponding signal conductor to provide electrical shielding for the signal conductor. The signal conductor is electrically connected to a corresponding circuit conductor of the circuit card. The cable card assembly comprises a ground bus coupled to the circuit card. The ground bus is electrically connected to the cable shield of the cable. The ground bus is electrically connected to a ground plane of the circuit card. The ground bus comprises a shell member forming a recess for receiving a corresponding cable. The shell member has an internal bus member and an external bus member coupled to the internal bus member. The internal bus member is mounted to the circuit card. The shell member comprises a conductive gasket between the internal bus member and the external bus member. BRIEF DESCRIPTION OF THE DRAWINGS
[0006] Figure 1is a perspective view of a communication system according to an exemplary embodiment.
[0007] Figure 2 is a perspective view of a second electrical connector according to an exemplary embodiment.
[0008] Figure 3 is a perspective view of a first electrical connector according to an exemplary embodiment.
[0009] Figure 4 is a perspective view of a cable card assembly according to an exemplary embodiment.
[0010] Figure 5 is a top perspective view of a portion of a cable card assembly showing a portion of a ground bus and a subset of cables according to an exemplary embodiment.
[0011] Figure 6 is a bottom perspective view of a portion of a ground bus according to an exemplary embodiment showing external bus members.
[0012] Figure 7 is a top perspective view of a portion of a cable card assembly showing a portion of a ground bus and a subset of cables according to an exemplary embodiment.
[0013] Figure 8 is a top perspective view of a portion of a cable card assembly showing a portion of a ground bus and a subset of cables according to an exemplary embodiment.
[0014] Fig. 9 is a top perspective view of a portion of a cable card assembly according to an exemplary embodiment. DETAILED DESCRIPTION
[0015] Figure 1 1 is a perspective view of a communication system 100 according to an exemplary embodiment. The communication system 100 includes a first electrical connector 102 disposed at an end of a cable 104, and includes a second electrical connector 106. In the illustrated embodiment, the second electrical connector 106 is mounted to a circuit board 108. In various other embodiments, the second electrical connector 106 may be disposed at the end of the cable (not shown).
[0016] In an exemplary embodiment, the second electrical connector 106 is a socket connector. The second electrical connector 106 may be a socket connector, such as a header connector. In other embodiments, the second electrical connector 106 may be a card edge connector having a card slot. The first electrical connector 102 is mated to the second electrical connector 106 at a detachable interface. In an exemplary embodiment, the first electrical connector 102 is a plug connector configured to be pluggably coupled to the second electrical connector 106. For example, a portion of the first electrical connector 102 may be inserted into a socket or opening of the second electrical connector 106. In an exemplary embodiment, the first electrical connector 102 is coupled to the second electrical connector 106 at a detachable interface. For example, the first electrical connector 102 is latchably coupled to the second electrical connector 106 using a clip or latch element. The latch may be releasable to allow the first electrical connector 102 to be removed from the second electrical connector 106. The connectors 102, 106 may be input-output (I / O) connectors.
[0017] Additional references Figure 2 , Figure 2 1 is a perspective view of a second electrical connector 106, which includes a socket housing 110 that holds a contact array 112. In an exemplary embodiment, the socket housing 110 includes an opening 114 that receives the first electrical connector 102. The opening 114 may be a slot configured to receive the plug end of the first electrical connector 102. In an alternative embodiment, the opening 114 may be a card slot. In the illustrated embodiment, the opening 114 is located at the top of the socket housing 110. In alternative embodiments, other locations are feasible, such as at the front. The contact 112 has a separable mating interface. The contact 112 may define a compressible interface, such as including a deflectable spring beam that is compressed when the first electrical connector 102 is received in the opening 114. Optionally, the contact 112 may be arranged in a plurality of rows and columns. In various embodiments, the contact 112 is a land grid array (LGA: landgridarray). In various embodiments, the second electrical connector 106 is a communication device, such as a slot connector. The second electrical connector 106 may be a high-speed connector.
[0018] Additional references Figure 3 , Figure 31 is a perspective view of a first electrical connector 102, which includes a housing 120 having a cavity 122 for receiving a cable card assembly 130. The housing 120 has a cable end 124 and a mating end 126 opposite the cable end 124. The cable 104 extends from the cable end 124. The mating end 126 is configured to be connected to the second electrical connector 106. In the illustrated embodiment, the first electrical connector 102 is a right angle connector. For example, the cable end 124 is located at the rear of the housing 120, and the mating end 126 is located at the bottom of the housing 120. In alternative embodiments, other positions are possible, such as having the mating end 126 at the front or having the cable end 124 at the top. The cable card assembly 130 includes a circuit card 132. The cable 104 is configured to terminate to the circuit card 132. The circuit card 132 is configured to be inserted into the opening 114 of the second electrical connector 106 when the first electrical connector 102 is mated with the second electrical connector 106.
[0019] Figure 4 1 is a perspective view of a cable card assembly 130 according to an exemplary embodiment. The cable card assembly 130 includes a circuit card 132, a cable 104 connected to the circuit card 132, and a ground bus 300 that is separate and discrete from the circuit card 132 and connected to the circuit card 132. The ground bus 300 provides shielding for the ends of the cable 104 and the interface between the cable 104 and the circuit card 132. Optionally, the signal conductors of the cable 104 can be directly terminated to the circuit card 132. Alternatively, a contact assembly (e.g., a stamped and formed contact and / or an overmolded (multiple) lead frame) can be provided to electrically connect the signal conductors of the cable 104 to the circuit card 132. The ground bus 300 is electrically connected to the cable 104, such as a cable shield and / or a drain wire of the cable 104. The ground bus 300 is electrically connected to the circuit card 132. For example, the ground bus 300 is electrically connected to a circuit or conductor of the circuit card 132, such as a ground plane of the circuit card 132.
[0020] The ground bus 300 provides electrical shielding for the signal conductors of the cable 104 and the circuit conductors of the circuit card 132. The ground bus 300 is electrically connected to the shielding structure of the cable 104, such as to the cable shield of the cable 104 and / or the drain wires of the cable 104. In an exemplary embodiment, the ground bus 300 is connected to the cable shield and / or the drain wires using a conductive gasket, a conductive adhesive, a conductive epoxy, a conductive tape or braid, a conductive foam, welding, etc. The ground bus 300 can be soldered to the circuit card 132. However, the ground bus 300 can be connected to the circuit card 132 with a solderless connection, such as an interference or press fit connection. In various embodiments, multiple ground buses 300 can be provided.
[0021] In an exemplary embodiment, the cable card assembly 130 includes multiple rows and columns of cables 104. The cables 104 can be grouped together, such as in a 3×4 arrangement. The cables 104 are terminated to one side of the circuit card 132, such as the top side of the circuit card 132. However, the cables 104 can additionally or alternatively be terminated to the bottom side of the circuit card 132. Each row of cables 104 includes a corresponding ground bus 300. For each row, the ground bus 300 can be similar. However, the size and shape of the ground bus 300 can be different to accommodate stacking / overlapping situations.
[0022] The circuit card 132 extends between a cable end 134 (e.g., a top portion) and a mating end 136 (e.g., a bottom portion). In alternative embodiments, other arrangements are possible, such as having a mating end 136 at the front edge of the circuit card 132 to be inserted into a card slot. In other alternative embodiments, the cable end 134 can be disposed at the bottom portion. The cable 104 is configured to be coupled to the circuit card 132 at the cable end 134. In the illustrated embodiment, the cable 104 extends rearward from the circuit card 132. The circuit card 132 includes an upper surface 140 and a lower surface 142. In the illustrated embodiment, the cable 104 is connected to the circuit card 132 at the upper surface 140. In the illustrated embodiment, the lower surface 142 can mate with the second electrical connector 106.
[0023] The circuit card 132 includes circuit conductors 144 (eg Figure 5 140 ), such as mating pads, traces, through-holes, etc. Circuit conductors 144 can be disposed on the upper surface 140 and the lower surface 142. The circuit conductors 144 can include both signal conductors and ground conductors of the circuit card 132. In an exemplary embodiment, the circuit conductors 144 are disposed at the cable end 134 for connection to the cable 104 (and / or contact assembly) and are disposed at the mating end 136 for connection to the second electrical connector 106. The circuit conductors 144 at the mating end 136 define mating conductors that are configured to be electrically connected to corresponding contacts 112 ( Figure 2 ). The circuit conductors 144 at the cable end 134 are configured to be electrically connected to the ground bus 300 and the signal conductors of the cable 104.
[0024] The ground bus 300 surrounds the ends of the cables 104. For example, the ends of the cables 104 are located in corresponding recesses 301 in the ground bus 300. The ground bus 300 is electrically connected to the cables 104 (e.g., cable shields and / or drain wires). The ground bus 300 is terminated to the circuit card 132. The ground bus 300 electrically shares the cables 104 with the circuit card 132. The ground bus 300 electrically shares the cables 104 with each other. The ground bus 300 provides electrical shielding for signals transmitted between the circuit card 132 and the cables 104. The ground bus 300 enhances the electrical performance of the cable card assembly 130, for example, by reducing crosstalk.
[0025] The ground bus 300 includes a shell 302 made of a conductive material (e.g., a metal material) to provide electrical shielding. In various embodiments, the ground bus 300 can be a die-cast component. In other various embodiments, the ground bus 300 can be a stamped component. In an exemplary embodiment, the ground bus 300 is a multi-piece structure. For example, the ground bus 300 includes one or more internal bus components 304, one or more external bus components 306, and one or more conductive washers 400 at (multiple) interfaces 308 between the internal bus components 304 and the external bus components 306. The conductive washers 400 provide shielding at the interfaces 308. The conductive washers 400 electrically connect the internal bus components 304 and the external bus components 306. The conductive washers 400 can also mechanically connect the internal bus components 304 and the external bus components 306. The internal bus components 304 are located between the external bus components 306 and the circuit card 132. The ground bus 300 can be oriented such that the inner bus member 304 is the bottom bus member and the outer bus member 306 is the top bus member. However, in alternative embodiments, other orientations are possible. The cable 104 is received between the inner bus member 304 and the outer bus member 306. For example, the recess 301 can be formed by the inner bus member 304 and the outer bus member 306, and the cable 104 is received in the recess 301 between the inner bus member 304 and the outer bus member 306. The conductive gasket 400 can be located in the recess 301 to electrically connect to the cable 104.
[0026] The ground bus 300 extends between the front portion 312 and the rear portion 314. The rear portion 314 is configured to face the cable 104. The ground bus 300 extends between an inner end 316 and an outer end 318. The inner bus member 304 is located at the inner end 316, and the outer bus member 306 is located at the outer end 318. The cable 104 can extend from the outer end 318, for example, toward the rear portion 314. The ground bus 300 can be oriented so that the inner end 316 is the bottom end and the outer end 318 is the top end. However, in alternative embodiments, other orientations are also possible. In various embodiments, the inner end 316 is located at the bottom and is configured to face the circuit card 132. The inner end 316 can be mounted to the circuit card 132 to mechanically and electrically connect the ground bus 300 to the circuit card 132. The inner end 316 can be soldered to the circuit card 132.
[0027] Figure 5 1 is a top perspective view of a portion of a cable card assembly 130 according to an exemplary embodiment, showing a portion of a ground bus 300 and a subset of cables 104. Each cable 104 includes at least one signal conductor and a shielding structure that provides electrical shielding for the at least one signal conductor. In an exemplary embodiment, the cables 104 are twinaxial cables. For example, each cable 104 includes a first signal conductor 150 and a second signal conductor 152. The signal conductors 150, 152 carry differential signals. The signal conductors 150, 152 are configured to be electrically connected to corresponding circuit conductors 144 of the circuit card 132. However, in alternative embodiments, the cables 104 may include more or fewer signal conductors, such as coaxial cables.
[0028] The cable 104 includes one or more insulators 154 surrounding the signal conductors 150, 152 and a cable shield 160 surrounding the insulator 154. The cable shield 160 provides circumferential shielding around the signal conductors 150, 152. The cable 104 includes a cable jacket 162 surrounding the cable shield 160. In various embodiments, the cable 104 includes one or more drain wires 164 electrically connected to the cable shield 160. In alternative embodiments, the cable 104 is free of drain wires.
[0029] In an exemplary embodiment, the cable jacket 162, the cable shield 160 and the insulator 154 can be removed (e.g., stripped) to expose portions of the signal conductors 150, 152 for termination to the circuit card 132 (or to the contact assembly). A portion of the cable shield 160 can be exposed and / or a portion of the drain wire 164 can be exposed to terminate to the ground bus 300. The exposed portions of the signal conductors 150, 152 are configured to be mechanically and electrically coupled (e.g., welded) to the corresponding circuit conductors 144 of the circuit card 132. The cable shield 160 does not extend along the exposed portion. However, the ground bus 300 extends along the exposed portion and provides shielding for the exposed portion. The ground bus 300 can be shaped and positioned relative to the exposed portion to control the impedance along the signal path. For example, the ground bus 300 can be shaped and positioned relative to the exposed portion to maintain a target impedance (e.g., 50 ohms, 75 ohms, 100 ohms, etc.) along the signal path.
[0030] The internal bus member 304 of the ground bus 300 is Figure 5 . The internal bus member 304 is configured to provide shielding for the cables 104. For example, the internal bus member 304 forms part of the recess 301 that receives the corresponding cable 104. Optionally, each recess 301 can receive a single (e.g., different) cable 104. The internal bus member 304 extends between the front 312 and the rear 314. The internal bus member 304 is made of a conductive material such as a metallic material. In various embodiments, the internal bus member 304 is a die-cast member. In other various embodiments, the internal bus member 304 can be a plated plastic part. In the illustrated embodiment, the internal bus member 304 is shown as a single unit between the front 312 and the rear 314, which is configured to accommodate multiple rows of cables 104. However, in alternative embodiments, the internal bus member 304 can be a multi-piece structure, such as a stack of bus elements arranged from front to back to accommodate corresponding rows of cables 104.
[0031] The internal bus member 304 includes a base 340 having a bottom 341 that is configured to be mounted to the circuit card 132. The base 340 includes a cable tray 342 that is configured to receive a corresponding cable 104. The cable tray 342 forms part of the recess 301. The cable tray 342 supports the cable 104 to be terminated to the circuit card 132. The base 340 includes a partition wall 344 between the recesses 301. The partition wall 344 surrounds the recess 301. For example, the partition wall 344 extends along both sides of the recess 301, extends along the front of the recess 301, and extends along the rear of the recess 301. The partition wall 344 provides shielding between the recesses 301. Each partition wall 344 includes an upper surface 345. The external bus member 306 ( Figure 6 ) is configured to be coupled to the internal bus member 304 at the upper surface 345. The conductive gasket 400 is disposed at the upper surface 345.
[0032] In an exemplary embodiment, the inner bus member 304 includes a locating element 346 extending along the dividing wall 344. The locating element 346 is used for locating and / or shielding between the outer bus members 306. The locating element 346 is located between the recesses 301. The locating element 346 can be a protrusion, such as a lip or wall extending from the dividing wall 344. In alternative embodiments, the locating element 346 can be a groove or slot formed in the dividing wall 344. Other types of locating elements can be used in alternative embodiments. The locating element 346 is sized and shaped to interact with a complementary element of the outer bus member 306.
[0033] In an exemplary embodiment, the internal bus member 304 includes a locating pin 348 extending from the dividing wall 344. The locating pin 348 can extend upward from the upper surface 345 of the dividing wall 344. The locating pin 348 is configured to interface with the external bus member 306 to position the external bus member 306 relative to the internal bus member 304. For example, the locating pin 348 can be received in an opening in the external bus member 306 to align the external bus member 306 with the internal bus member 304. The locating pin 348 can be press-fit into the external bus member 306 to mechanically and electrically connect the external bus member 306 to the internal bus member 304.
[0034] In an exemplary embodiment, the conductive gasket 400 is disposed on the inner bus member 304. The conductive gasket 400 is located between the inner bus member 304 and the outer bus member 306 ( Figure 6 ) to provide shielding at the interface. For example, the conductive gasket 400 is applied to the upper surface 345 of the partition wall 344. The conductive gasket 400 can be applied to the positioning element 346 in addition or alternatively. The conductive gasket 400 extends around each recess 301 to provide circumferential shielding around each recess 301. For example, the conductive gasket 400 can be applied on all four sides (e.g., front, back, right and left) of each recess 301.
[0035] In an exemplary embodiment, the conductive gasket 400 is formed in place on the internal bus member 304. For example, the conductive gasket 400 can be dispensed at a precise location by a dispensing tool. In various embodiments, the conductive gasket 400 is applied in a dispersed pattern across the interface. For example, the conductive gasket 400 can be discontinuous, with spaces or gaps 402 between the conductive gasket 400 deposits, such as to reduce the amount of material used to reduce costs. The size of the gap 402 is designed to be used for shielding at certain frequencies (e.g., to prevent EMI leakage). In various embodiments, the gap 402 is less than 1.0 mm. Optionally, the conductive gasket 400 can be applied in the form of dots or lines.
[0036] In various embodiments, the conductive gasket 400 is a room temperature vulcanizing (RTV) material. For example, the material can be a silicon material, such as a silicone rubber with a conductive filler, so that the material is conductive. In an exemplary embodiment, the material is a non-flowable or flow-restricted material to avoid leakage into undesirable areas of the ground bus 300, such as leaking into the recess 301. In an exemplary embodiment, the conductive gasket 400 is easy to solidify or cure, such as at room temperature. For example, the conductive gasket 400 can solidify or cure without additional input (such as without additional heat). In an exemplary embodiment, the conductive gasket 400 is fixed to the internal bus member 304 at a temperature below the welding temperature to avoid damaging the cable.
[0037] In an exemplary embodiment, the conductive gasket 400 is electrically connected to the drain wire 164. For example, the conductive gasket 400 is applied at a corner of the recess 301. The drain wire 164 is routed to the corner to interface with the conductive gasket 400.
[0038] Figure 6 3 is a bottom perspective view of a portion of ground bus 300 according to an exemplary embodiment, showing external bus member 306. External bus member 306 extends between front portion 312 and rear portion 314. External bus member 306 is made of a conductive material such as a metallic material. In various embodiments, external bus member 306 is a die cast member. In other various embodiments, external bus member 306 may be a stamped or plated plastic member. External bus member 306 is configured to be a ground bus member for cable 104 (in Figure 5 ) provides shielding.
[0039] The external bus member 306 includes a cap 320 having a base wall 322 and a cable cover 324. The cable cover 324 can be angled to accommodate the cables 104 extending outward from the circuit card 132, for example, at an angle between 30° and 60°. The base wall 322 is disposed at the bottom or inner end of the external bus member 306. The base wall 322 is configured to couple to the internal bus member 304 (at Figure 5).
[0040] In an exemplary embodiment, the external bus member 306 includes a positioning element 326 extending from the base wall 322 of the cap 320. The positioning element 326 is used to position and / or shield between the external bus member 306 and the internal bus member 304. The positioning element 326 can interact with the positioning element 346 of the internal bus member 304 to position the external bus member 306 relative to the internal bus member 304. The positioning element 346 causes the base wall 322 to be non-planar, which improves EMI shielding at the interface.
[0041] In the exemplary embodiment, the cap 320 includes an opening 328 in the base wall 322. The opening 328 receives a locating pin 348 ( Figure 5 ) to position the external bus member 306 relative to the internal bus member 304.
[0042] In an exemplary embodiment, the conductive gasket 400 is disposed on the external bus member 306. For example, the conductive gasket 400 is disposed on the base wall 322 and / or the cable cover 324. The conductive gasket 400 is applied to the base wall 322 to interface with the internal bus member 304. The conductive gasket 400 is applied to the cable cover 324 to interface with the cable 104 (such as a cable shield). The conductive gasket 400 can be applied to the positioning element 326 in addition or alternatively. The conductive gasket 400 can be applied to the edge 330 of the cap 320 to interface with the adjacent external bus member 306. In an exemplary embodiment, the conductive gasket 400 is formed in place on the external bus member 306. For example, the conductive gasket 400 can be dispensed at a precise location by a dispensing tool. In various embodiments, the conductive gasket 400 is applied across the interface in a dispersed pattern. For example, the conductive gasket 400 can be discontinuous, with spaces or gaps between the conductive gasket 400 deposits.
[0043] Figure 7 is a top perspective view of a portion of the cable card assembly 130 showing a portion of the ground bus 300 and a subset of the cables 104 according to an exemplary embodiment. Figure 7 An internal bus member 304 connected to the circuit card 132 is shown. Figure 7 Three rows of cables 104 are shown connected to the circuit card 132, with one row of recesses 301 open to receive a corresponding cable 104 in a later assembly step. Figure 7 Two outer bus members 306 connected to the inner bus member 304 are shown, along with a deposit of conductive gasket 400 arranged relative to the recess 301 to receive the next outer bus member 306 to cover the third row of cables 104 .
[0044] Figure 8is a top perspective view of a portion of the cable card assembly 130 showing a portion of the ground bus 300 and a subset of the cables 104 according to an exemplary embodiment. Figure 8 A third outer bus member 306 is shown connected to the inner bus member 304 covering the third row of cables 104 .
[0045] Fig. 9 is a top perspective view of a portion of a cable card assembly 130 according to an exemplary embodiment. Fig. 9 Four rows of cables 104 and four external bus members 306 are shown connected to the internal bus members 304. All recesses 301 are surrounded and shielded by conductive gaskets 400 at the interfaces of the internal and external bus members 304, 306 and between them.
Claims
1. A cable card assembly (130) for an electrical connector (102), comprising: a circuit card (132) having an array of circuit conductors (144) on a surface (142) of the circuit card, the circuit card having a ground plane; a cable (104) terminated to the circuit card, the cable comprising signal conductors (150, 152) and a cable shield (160) surrounding corresponding signal conductors to provide electrical shielding for the signal conductors, the signal conductors being electrically connected to corresponding circuit conductors of the circuit card; and A ground bus (300) coupled to the circuit card, the ground bus electrically connected to the cable shield of the cable, the ground bus electrically connected to the ground plane of the circuit card, the ground bus comprising a shell (302) forming a recess (301) for receiving a corresponding cable, the shell having an internal bus member (304) and an external bus member (306) coupled to the internal bus member, the internal bus member being mounted to the circuit card, the shell comprising a conductive gasket (400) between the internal bus member and the external bus member.
2. The cable card assembly (130) according to claim 1, wherein: The conductive gasket (400) is formed in place on at least one of the inner bus member (304) and the outer bus member (306).
3. The cable card assembly (130) according to claim 1, wherein: The conductive gasket (400) is a room vulcanizing temperature (RVT) material.
4. The cable card assembly (130) of claim 1, wherein: The conductive gasket (400) is secured to at least one of the inner bus member (304) and the outer bus member (306) at a temperature below a soldering temperature.
5. The cable card assembly (130) of claim 1, wherein: The conductive gasket (400) is applied to at least one of the inner bus member (304) and the outer bus member (306) in a dispersed pattern across an interface (308) between the inner bus member and the outer bus member.
6. The cable card assembly (130) of claim 1, wherein: The conductive gasket (400) is discontinuous at an interface (308) between the inner bus member (304) and the outer bus member (306).
7. The cable card assembly (130) of claim 1, wherein: The conductive gasket (400) extends around each recess (301).
8. The cable card assembly (130) of claim 1, wherein: Each cable (104) includes a drain wire (164) electrically connected to the conductive gasket (400).
9. The cable card assembly (130) of claim 1, wherein: The conductive gaskets (400) are arranged at dispersed points around each recess (301).
10. The cable card assembly (130) of claim 1, wherein: The housing (302) includes a plurality of outer bus members (306) coupled to the inner bus member (304).
11. The cable card assembly (130) of claim 10, wherein: The conductive gasket (400) is located between the external bus members (306) to connect the external bus members to each other.
12. The cable card assembly (130) of claim 1, wherein: The internal bus component (304) includes an internal positioning element (346) at the interface (308), and the external bus component (306) includes an external positioning element (326) at the interface, the external positioning element interacting with the internal positioning element to position the external bus component relative to the internal bus component.
13. The cable card assembly (130) of claim 12, wherein: The conductive gasket (400) is located at the interface (308) between the outer positioning element (326) and the inner positioning element (346).