System and method of surface mount electrical connection

• US 7,651,374 B2
• Filed: 06/10/2008
• Issued: 01/26/2010
• Est. Priority Date: 06/10/2008
• Status: Expired due to Fees

• Current Assignee: 3M Innovative Properties Company (3M Company)
• Original Assignee: 3M Innovative Properties Company (3M Company)
• Inventors: Westkamp, Harald, Ploehn, Guenter, Castiglione, Joseph N., Feldman, Steven, Barr, Alexander W., Nuiten, Gerardus A.C.A.
• Primary Examiner(s): Paumen; Gary F.
• Application Number:
  US12/136,674
• Publication Number:
  US 20090305533A1
• Time in Patent Office: 595 Days
• Field of Search: 439/608, 439/581, 439/579, 439/108, 439/607.05, 439/607.13
• US Class Current: 439/607.05
• CPC Class Codes: H01R 12/725 containing contact members presenting a contact carrying strip, e.g. edge-like strip
• CPC Class Codes: H01R 12/79 connecting to rigid printed circuits or like structures
• CPC Class Codes: H01R 13/6588 with through openings for individual contacts
• CPC Class Codes: H01R 13/65918 wherein each conductor is individually surrounded by shield

Abstract

An electrical connector system includes a carrier assembly and a header. The carrier assembly includes a plurality of shielded connectors and a coaxial cable terminated to each of the shielded connectors. The header includes opposed grounding plates each having ground tabs configured for attachment to a circuit board and a plurality of pins disposed between the opposed plates in a stripline configuration. The coaxial cables of the carrier assembly electrically communicate with the circuit board through a stripline configuration of pins in the header.

Claims

1. An electrical connector system comprising:

a carrier assembly comprising a plurality of shielded connectors and a coaxial cable terminated to each of the shielded connectors; and

a header comprising opposed ground plates oriented generally parallel to a circuit board with each having solder tabs configured for attachment to the circuit board and a plurality of pins disposed between the opposed plates;

wherein when the carrier assembly is connected to the header, the coaxial cables of the carrier assembly electrically communicate with the circuit board through a stripline configuration in the header.

2. The electrical connector system of claim 1, wherein the opposed ground plates comprise an upper ground plate and a lower ground plate, and each pin comprises a termination portion disposed between two of the solder tabs of the ground plates and a contact portion extending from the termination portion and configured to couple with the contact portion of one of the shielded connectors.

3. The electrical connector system of claim 1, wherein the plurality of shielded connectors comprises a single row of shielded connectors disposed in a plane defined by the single row of shielded connectors, each shielded connector comprising a shield body having a ground beam projecting from an exterior surface of the shield body out of the plane defined by the single row of shielded connectors.

4. The electrical connector system of claim 3, wherein at least one of the opposed ground plates of the header is configured to contact at least one ground beam of at least one of the shield bodies and align the shield bodies between the opposed plates.

5. The electrical connector system of claim 3, wherein the carrier assembly comprises a housing including separator plates that are spaced apart to define a plurality of ports, each port configured to receive one of the shielded connectors.

6. The electrical connector system of claim 5, wherein leading portions of the opposed ground plates define a plurality of slots and a finger between adjacent slots, each slot configured to receive one separator plate and each finger configured to be captured between the carrier assembly housing and one of the shield bodies.

7. The electrical connector system of claim 6, wherein the separator plates of the carrier assembly insert into the slots of the opposed ground plates of the header to laterally align the contacts in the shielded connectors with the pins in the header, and the fingers of the opposed plates capture the shielded connectors to vertically align the contacts in the shielded connectors with the pins in the header.

8. The electrical connector system of claim 7, wherein each of the fingers comprise a tapered leading end that is configured to capture the shield body of each of the shielded connectors and provide a lead-in configured to receive one of the separator plates of the carrier assembly.

9. The electrical connector system of claim 8, wherein the opposed ground plates comprise an upper ground plate and a lower ground plate, and the upper ground plate comprises first solder tabs and the lower ground plate comprises second solder tabs that interdigitate with the first solder tabs to define a substantially continuous ground shield along a trailing end of the header.

10. The electrical connector system of claim 1, wherein the header comprises an electrical insulator supporting a single row of pins, and crosstalk to each of the pins is minimized by a dielectric distance between adjacent pins being about twice a dielectric thickness extending between one of the pins and one of the opposed first and second plates.

11. A connector configured to electrically couple a carrier assembly to a circuit board, the connector comprising:

an electrical insulator supporting a row of pins, each pin comprising a contact portion configured for connection with a coaxial cable of the carrier assembly and a termination portion extending from the contact portion and configured to couple to the circuit board; and

a first plate disposed on a first side of the electrical insulator and a second plate disposed on a second side of the electrical insulator, each of the first and second plates comprising a leading portion parallel to the contact portion of the pin that combine to form a stripline connector configured to pass signals between the coaxial cables of the carrier assembly and the circuit board, wherein at least one of the first and second plates includes a trailing end portion configured to couple to the circuit board arranged opposite and at an angle to the leading end.

12. The connector of claim 11, wherein the second plate comprises a fabricated feature of the circuit board.

13. The connector of claim 11, wherein the leading portion of at least one of the first and second plates comprises a continuous plate extending substantially between first and second sides of the connector.

14. The connector of claim 11, wherein each of the first and second plates comprises a trailing end portion opposite the leading end, the trailing end portion of the first plate comprising a plurality of spaced apart first solder tabs and the trailing end portion of the second plate comprising a plurality of spaced apart second solder tabs.

15. The connector of claim 14, wherein the trailing end portion of each of the first and second plates is parallel to the termination portion of the pin and configured to ground shield the termination portion of the pin on at least two sides.

16. The connector of claim 14, wherein the termination portion of each pin is offset from one of the first solder tabs and lateral sides of the termination portion of each pin are disposed between adjacent second solder tabs.

17. The connector of claim 14, wherein each of the first solder tabs comprise a segment disposed at a right angle relative to the first plate and each of the second solder tabs comprise a segment disposed at a right angle relative to the second plate such that the termination portion of each pin is electrically shielded on at least three sides by the segments of the first and second solder tabs.

18. The connector of claim 17, wherein each of the first and second plates is fixed relative to the electrical insulator such that the termination portion of each pin is maintained at a fixed distance from a ground defined by the segments of the first and second solder tabs.

19. The connector of claim 17, wherein each pin comprises a substantially coaxial structure having about 75% of a circumference of the structure surrounded by a ground formed in part by the segments of the first and second solder tabs and in part by the opposed first and second plates.

20. The connector of claim 11, wherein the stripline connector comprises a controlled impedance stripline configuration.

21. A carrier assembly configured to electrically couple with a circuit board, the carrier assembly comprising:

a housing comprising a first wall offset from a second wall to define a plurality of housing ports; and

a single row of shielded connectors, each shielded connector disposed in one of the housing ports and including a coaxial cable terminated to a contact and a shield body disposed around the contact;

wherein each shield body comprises a ground wiper extending from an exterior of the shield body toward one of the first and second walls of the housing and configured for coupling to a controlled impedance header.

22. The carrier assembly of claim 21, wherein the first wall of the housing comprises a plurality of spaced apart first fences that are integrally formed on an interior surface of the first wall and the second wall of the housing comprises a plurality of spaced apart second fences that are integrally formed on an interior surface of the second wall, each housing port formed between opposing first and second fences.