Connector assembly and related methods and assemblies
The present application describes a connector assembly, a circuit board assembly, a cable assembly and to a method of manufacturing a connector assembly. A connector assembly comprises a shroud; and a plurality of co-axial radio frequency connectors at least partially received in the shroud such that the shroud extends around each radio frequency connector and between adjacent radio frequency connectors. The shroud comprises at least one piece of radiowave absorption material arranged to absorb radio frequency energy leaking or dispersing from the radio frequency connectors in use. Another connector assembly comprises a body, a plurality of radio frequency connectors at least partially received in the body, and a conductive foil integrally formed with the body and partially extending beyond the body.
1. A connector assembly comprising:
a shroud; and,
a plurality of co-axial radio frequency connectors at least partially received in the shroud such that the shroud extends around each radio frequency connector and between adjacent radio frequency (RF) connectors, each co-axial connector having a first end arranged to mate to a corresponding other co-axial connector and a second end having surface mount terminals for being soldered to a circuit board, wherein the shroud has a planar surface surrounding the second end arranged to abut the circuit board when soldered to the circuit board in use, and wherein the shroud is molded around the co-axial connectors and completely encapsulates the co-axial connectors between the first end and the second end,
wherein the shroud comprises at least one piece of radiowave absorption material arranged to absorb radio frequency energy leaking or dispersing from the radio frequency connectors in use wherein the radiowave absorption material is selected to absorb an expected signal frequency carried by the radio frequency connectors.
2. A connector assembly according to claim 1 , wherein the shroud comprises plural pieces of radiowave absorption material, at least one piece of the plural pieces of radiowave absorption material having different RF energy absorption properties from another piece of the plural pieces of radiowave absorption material.
3. A connector assembly according to claim 1 , wherein the RF connectors have a front portion for mating to a corresponding other connector and a rear portion having terminals for making electrical connection to a circuit board, wherein the shroud extends around at least the rear portion of the connector assembly.
4. A connector assembly according to claim 1 , wherein a first piece of radiowave absorption material (RAM) of a first type is sandwiched by pieces of RAM of a second type.
5. A connector assembly according to claim 1 , wherein one or more pieces of radiowave absorption material is arranged in a layer.
6. A connector assembly according to claim 1 , comprising a body, the body holding the shroud and being formed from a different material to the shroud which has a relatively low ability to absorb RF energy compared with the shroud.
7. A connector assembly according to claim 1 , wherein the shroud comprises a conductive foil layer formed integrally with the connector assembly.
8. A connector assembly according to claim 7 , wherein the conductive foil layer is positioned adjacent to a surface portion of at least one piece of radiowave absorption material.
9. A connector assembly according to claim 8 , wherein the conductive foil layer is positioned between two pieces of radiowave absorption material.
10. A connector assembly according to claim 7 , wherein the conductive foil layer surrounds a rear portion of the RF connectors and wherein the conductive foil layer is wrapped around at least part of a surface of the connector assembly.
11. A connector assembly according to claim 7 , wherein the conductive foil layer extends beyond a body of the connector assembly such that the conductive foil layer can be joined to a ground plane of a circuit board.
12. A connector assembly according to claim 7 , wherein the conductive foil layer defines at least one pocket containing one or more pieces of radiowave absorption material.
13. A connector assembly according to claim 7 , wherein the conductive foil layer defines plural pockets, each containing one or more pieces of radiowave absorption material, wherein the plural pockets are arranged to absorb RF energy having respectively different frequencies.
14. A connector assembly according to claim 13 , wherein the plural pockets are arranged to absorb the RF energy from respective different subsets of the RF connectors.
15. A connector assembly according to claim 1 , wherein the at least one piece of radiowave absorption material comprises a composite material formed from a substrate doped with conducting particles.
16. A circuit board assembly comprising a printed circuit board and a connector assembly according to claim 1 mounted to the printed circuit board.
17. A circuit board assembly according to claim 16 , wherein a grounding foil of the connector assembly wraps over and onto an adjacent connector assembly on the circuit board and makes electrical contact with a ground foil of the adjacent connector assembly.
18. A circuit board assembly according to claim 17 , wherein plural pockets are formed in the connector assembly containing subsets of RF connectors, wherein the circuit board is adapted to receive different signals on the RF connectors in the two pockets.
19. A method of manufacturing a connector assembly according to claim 1 , comprising positioning RF connectors in a mold and molding one or more layers of radiowave absorption material around the RF connectors.