Coaxial connector interconnection cap
View Patent ↗A coaxial connector is combined with an inner conductor interconnection cap, for interconnection with a coaxial cable. The interconnection cap is provided with a bore adapted to seat upon and circumferentially contact an outer diameter of the inner contact and an outer diameter of the inner conductor. The interconnection cap extends along the inner contact to cover at least a contact portion at a cable end of the inner contact to enclose an interconnection between the inner conductor and the inner contact. Sealant may be applied to the interconnection to improve seal performance and the dimensions and materials of the interconnection cap may be adjusted to modify characteristic impedance for return loss optimization with respect to specific coaxial cables.
1. A coaxial connector in combination with an inner conductor interconnection cap, for interconnection with a coaxial cable provided with an inner conductor and an outer conductor, the combination comprising:
a connector body with an inner contact supported coaxial therewithin;
the interconnection cap provided with a bore therethrough, seated upon and circumferentially contacting an outer diameter of the inner contact and an outer diameter of the inner conductor;
the interconnection cap extending along the inner contact to cover a contact portion at a cable end of the inner contact;
the bore provided with an inward projecting inner conductor shoulder at the cable end, the inner conductor shoulder contacting an outer diameter of the inner conductor;
an outer diameter aligning portion of the interconnection cap proximate the cable end, the outer diameter aligning portion dimensioned to contact an inner diameter of the outer conductor when the outer conductor is coupled to the connector body;
wherein, the interconnection cap encloses an interconnection between the inner conductor and the inner contact.
2. The combination of claim 1 , wherein a connector end of the interconnection cap abuts an insulator coaxially supporting the inner contact within the connector body.
3. The combination of claim 1 , wherein an inner diameter of the inner conductor shoulder is provided with a scrape surface.
4. The combination of claim 1 , further including an inward projecting connector end shoulder, the connector end shoulder retaining the interconnection upon the inner conductor via a snap fit.
5. The combination of claim 1 , wherein the bore is provided with a taper between a minimum diameter proximate a cable end of the interconnection cap and a maximum diameter proximate a connector end of the interconnection cap.
6. The combination of claim 1 , wherein an inner diameter of the bore longitudinally corresponding to the contact portion decreases between a connector end of the contact portion and a cable end of the contact portion.
7. The combination of claim 1 , further including a plurality of stripping fingers, the stripping fingers arrayed around the cable end of the interconnection cap, projecting radially inward.
8. The combination of claim 1 , further including a first seal groove provided in the bore proximate the cable end.
9. The combination of claim 8 , further including an inner conductor seal seated in the first seal groove.
10. The combination of claim 1 , further including a third seal groove provided in the bore proximate the connector end.
11. The combination of claim 1 , further including a surface sealant.
12. The combination of claim 11 , wherein the surface sealant is applied to a cable end of the bore.
13. The combination of claim 1 , the outer diameter aligning portion provided with an annular second seal groove in an outer diameter; and
an outer conductor seal disposed in the second seal groove dimensioned to seal between the interconnection cap and an inner diameter of the outer conductor when the outer conductor is coupled to the connector body.
14. The combination of claim 13 , wherein the interconnection cap extends beyond the connector body at the cable end.
15. The combination of claim 1 , further including a mounting portion supporting the inner contact coaxial with the connector body.
16. A coaxial connector in combination with an inner conductor interconnection cap, for interconnection with a coaxial cable provided with an inner conductor and an outer conductor, the combination comprising:
a connector body with an inner contact supported coaxial therewithin;
the interconnection cap provided with a bore therethrough, seated upon and circumferentially contacting an outer diameter of the inner contact and an outer diameter of the inner conductor;
the interconnection cap extending along the inner contact to cover a contact portion at a cable end of the inner contact;
an impedance matching shoulder projecting radially outward from an outer diameter of the interconnection cap;
the bore provided with an inward projecting inner conductor shoulder at the cable end, the inner conductor shoulder contacting an outer diameter of the inner conductor; wherein, the interconnection cap encloses an interconnection between the inner conductor and the inner contact.
17. A method for impedance matching a coaxial connector with a desired coaxial cable, comprising the steps of:
applying an interconnection cap over an outer diameter of a contact portion of an inner contact of the coaxial connector;
the interconnection cap dimensioned to cover a longitudinal extent of the contact portion;
the interconnection cap formed of a material with a desired dielectric constant and radial dimensions selected to equalize an impedance characteristic of the coaxial connector with an impedance characteristic of the coaxial cable.
18. The method of claim 17 , wherein the interconnection cap is formed from an elastomeric material, the elastomeric material biasing the inner contact against the inner conductor.