IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
UP-0062570
(2008-04-04)
|
등록번호 |
US-7722401
(2010-06-14)
|
발명자
/ 주소 |
- Kirk, Brian
- Cohen, Thomas S.
|
출원인 / 주소 |
|
대리인 / 주소 |
Wolf, Greenfield & Sacks, P.C.
|
인용정보 |
피인용 횟수 :
49 인용 특허 :
32 |
초록
▼
An electrical interconnection system with high speed, differential electrical connectors. The connector is assembled from wafers each containing a column of conductive elements, some of which form differential pairs. A housing for the wafer is formed with regions of higher and lower dielectric const
An electrical interconnection system with high speed, differential electrical connectors. The connector is assembled from wafers each containing a column of conductive elements, some of which form differential pairs. A housing for the wafer is formed with regions of higher and lower dielectric constant material. The regions of lower dielectric constant material are selectively positioned adjacent longer signal conductors of the differential pairs. The material may be preferentially placed along curved segments of the differential pair to reduce crosstalk in the connector while reducing skew.
대표청구항
▼
What is claimed is: 1. An electrical connector comprising: a) a housing having a first surface; b) a plurality of conductors disposed at least in part within the housing, the plurality of conductors being disposed in a plane, the plurality of conductors comprising: i) a first signal conductor and a
What is claimed is: 1. An electrical connector comprising: a) a housing having a first surface; b) a plurality of conductors disposed at least in part within the housing, the plurality of conductors being disposed in a plane, the plurality of conductors comprising: i) a first signal conductor and a second signal conductor, longer than the first signal conductor; and ii) a ground conductor adjacent the second conductor; wherein the housing comprises: at least one first region of a first dielectric constant, the at least one first region being disposed along at least a portion of a length of the first signal conductor; and at least one second region of a second dielectric constant, lower than the first dielectric constant, the at least one second region extending into the housing from the first surface and being disposed along at least a portion of a length of the second signal conductor between the second signal conductor and the ground conductor; and at least one third region of lossy material between the ground conductor and the first surface, the at least one third region being disposed along at least a portion of a length of the ground conductor adjacent the at least one second region. 2. The electrical connector of claim 1, wherein: the second conductor has a portion adjacent the at least one second region; and the first conductor has a portion adjacent the portion of the second conductor; and the portion of the second conductor is wider than the portion of the first conductor. 3. The electrical connector of claim 1, wherein the first region and the at least one second region are adapted and arranged to equalize signal propagation delay through the first conductor and the second conductor in a frequency range between about 3 GHz and 6 GHz. 4. The electrical connector of claim 1, wherein: the housing comprises molded plastic and forms the at least one first region; and the housing comprises at least one slot formed in the molded plastic, the at least one slot forming at least one second region. 5. The electrical connector of claim 1, wherein the ground conductor is a second ground conductor and the plurality of conductors further comprises a first ground conductor adjacent the first conductor, and the at least one first region is disposed between the first ground conductor and the first signal conductor. 6. The electrical connector of claim 1, wherein the first signal conductor and the second signal conductor form a differential pair. 7. The electrical connector of claim 6, wherein the differential pair comprises a plurality of curved portions and the at least one second region comprises a plurality of second regions, each second region of the plurality of second regions being positioned proximate a curved portion of the plurality of curved regions. 8. An electrical connector comprising: a) a housing having a first surface; b) a plurality of signal conductors disposed at least in part within the housing, the signal conductors comprising a plurality of differential signal pairs, each signal differential pair comprising a first conductor and a second conductor, and each differential signal pair having at least one curved portion at which the second conductor has a larger radius of curvature than the first conductor, the plurality of signal conductors being disposed in a plane; wherein the housing comprises: at least one first region of a first dielectric constant, the at least one first region being disposed along at least portions of lengths of the first conductors of the plurality of differential signal pairs; and a plurality of second regions of a second dielectric constant, the plurality of second regions being disposed along at least portions of lengths of the second conductors of the plurality of differential pairs, the plurality of second regions positioned adjacent the at least one curved portions of the second conductors of the plurality of differential signal pairs, and the plurality of second regions extending into the housing from the first surface to the plane. 9. The electrical connector of claim 8, wherein each second conductor has a first portion adjacent the at least one first region and at least one second portion adjacent at least one of the plurality of second regions, the first portion having a first width and the second portion having a second width, larger than the first width. 10. The electrical connector of claim 8, wherein: the housing comprises molded plastic; the at least one first region comprises the molded plastic of the housing; and the plurality of second regions comprise openings within the molded plastic of the housing. 11. The electrical connector of claim 8, wherein: the housing comprises molded plastic; the at least one first region comprises at least one region of the molded plastic of the housing having a first type filler within the molded plastic; and the plurality of second regions comprise regions within the molded plastic of the housing having a second type filler. 12. The electrical connector of claim 8, wherein: the housing comprises molded plastic having fibrous filler; the at least one first region comprises at least one region of the molded plastic of the housing having a first percentage of fibrous filler; and the plurality of second regions comprise regions within the molded plastic of the housing having a second percentage of fibrous filler, the second percentage being less than the first percentage. 13. The electrical connector of claim 8, wherein the housing comprises a plurality of third regions, the third regions comprising lossy material disposed between adjacent differential signal pairs of the plurality of differential signal pairs. 14. An electrical connector comprising: a) a plurality of subassemblies, each subassembly comprising: i) a plurality of conductors disposed in a plane, the plurality of conductors comprising: I) a plurality of pairs, each pair comprising a first conductor and a second conductor; and II) a plurality of wide conductors, each wide conductor adjacent a second conductor of a pair of the plurality of pairs, the plurality of wide conductors each having a width greater than a width of the first conductors and the second conductors of the plurality of the pairs and a midpoint; ii) a housing comprising: I) insulative material of a first dielectric constant holding at least a portion of the first conductor of each of the plurality of pairs; and II) a plurality of regions of a second dielectric constant, the second dielectric constant being lower than the first dielectric constant, each of the plurality of regions being disposed along at least a portion of a length of a second conductor of the plurality of pairs between the second conductor and a wide conductor of the plurality of wide conductors adjacent the second conductor, the region of the second dielectric constant extending from the second conductor no further than the midpoint of the wide conductor; and b) a support member holding the plurality of subassemblies side-by-side. 15. The electrical connector of claim 14, wherein the second dielectric material comprises air. 16. The electrical connector of claim 14, wherein the connector is a right angle connector and the plurality of differential signal pairs comprise curved portions, and the plurality of regions of the second dielectric constant are selectively positioned adjacent the curved portions. 17. The electrical connector of claim 14, wherein: the second conductors of the plurality of differential signal pairs are each adjacent a wide conductor of the plurality of wide conductors, and the spacing between each second conductor and the adjacent wide conductor is smaller adjacent a region of the second dielectric constant than adjacent insulative material of the first dielectric constant. 18. The electrical connector of claim 14, wherein for each of the plurality of subassemblies, the plurality of regions of the second dielectric constant comprise a plurality of slots extending from a surface of the housing to second conductor of a differential pair of the plurality of differential signal pairs. 19. The electrical connector of claim 18, wherein the surface comprises a first surface and each of the plurality of subassemblies has a second surface on an opposite side of the subassembly from the first surface, and each of the plurality of subassemblies additionally comprises one or more lossy regions, extending into the housing from the second surface. 20. The electrical connector of claim 14, wherein: the plurality of pairs comprise a plurality of differential pairs; the plurality of wide conductors comprise a plurality of ground conductors; and the plurality of regions of the second dielectric constant consist essentially of a plurality of regions between a center line of a first conductor and a second conductor of a differential pair and a distal edge of a ground conductor.
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