Coaxial connector

• US 4,035,054 A
• Filed: 12/05/1975
• Issued: 07/12/1977
• Est. Priority Date: 12/05/1975
• Status: Expired due to Term

• Current Assignee: Kevlin Manufacturing Company
• Original Assignee: Kevlin Manufacturing Company
• Inventors: Lattanzi, Ernest W.
• Primary Examiner(s): Lake, Roy
• Assistant Examiner(s): Bicks, Mark S.
• Application Number:
  US05/637,935
• Time in Patent Office: 585 Days
• Field of Search: 339/136 R, 339/136 C, 339/177 R, 339/177 E, 339/178, 339/278 C
• US Class Current: 439/578
• CPC Class Codes: H01R 2103/00 Two poles
• CPC Class Codes: H01R 24/44 comprising impedance matching means

Abstract

A coaxial connector particularly adaptable for use as a miniature or sub-miniature connector at relatively high frequencies up to 40 GHz and above, which utilizes an inner contact assembly comprising a center conductor member which is retained within a dielectric member which is in turn retained within a conductive insert member, such assembly being positioned within a housing so that the center conductor extends beyond the dielectric and the conductive insert member coaxially of the interior of the housing. Conductive ring members are positioned adjacent each end of such assembly to fixedly hold the assembly at a predetermined position within the housing to prevent axial movement of the center conductor member therein. The diameters and lengths of the above members are selected to provide substantially matched impedance characteristics over the length of the coaxial connector.

Claims

1. A coaxial connector comprising

a housing member adapted for mechanical engagement with a coaxial cable;

a center conductor member;

a dielectric member within which a central portion of said center conductor member is retained;

a conductive insert member within which said dielectric member and said portion of said center conductor member are retained to form an inner contact assembly, said inner contact assembly being positioned within said housing member at a preselected position therein, said center conductor member having further portions extending beyond said dielectric member and said conductive insert member coaxially of the interior of said housing member;

first and second conductive ring members fixedly positioned within said housing member adjacent each end of said inner contact assembly and out of contact with said center conductor member, the inner diameters of said ring members being smaller than the outer diameter of said dielectric member whereby said inner contact assembly is fixedly held at said pre-selected position within said housing member to prevent axial movement of said center conductor member therein.

2. A coaxial connector in accordance with claim 1 and further wherein the extended portions of said center conductor member are formed as spring finger elements for engaging an inner conductor of a coaxial cable.

3. A coaxial connector in accordance with claim 2 wherein the outer diameters and the lengths of said central portion and said extended portions of said center conductor member and the inner diameters and the lengths of said conductive insert member and said ring members are selected to provide substantially matched impedance characteristics over the length of said coaxial connector.

4. A coaxial connector in accordance with claim 3 wherein the dielectric medium present between said extended portions of said center conductor member and said ring members is air.

5. A coaxial connector in accordance with claim 4 wherein said housing member is formed of stainless steel and said ring members and said conductive insert member are formed of a material having low transmission loss characteristics.

6. A coaxial connector in accordance with claim 5 wherein said low transmission loss material is beryllium copper.

7. A coaxial connector in accordance with claim 3 wherein each end of said housing member is adapted for mechanical engagement and disengagement with a plug connector.

8. A coaxial connector in accordance with claim 3 wherein one end of said housing member is adapted for mechanical engagement and disengagement with a plug connector and the other end thereof is adapted for permanent attachment with a coaxial cable.

9. A coaxial connector in accordance with claim 3 wherein said housing member includes means for mounting said connector to a separate body.

10. A coaxial connector in accordance with claim 9 wherein said separate body is a panel and wherein one end of said housing member is adapted for engagement and disengagement with a plug connector and the other end thereof is adapted for permanent attachment with a coaxial cable.

11. A coaxial cable in accordance with claim 3 wherein said dielectric member has a thin cut extending along the length of and partially through said member substantially on the center line thereof to permit the insertion of said center conductor member for retention therein.

12. A coaxial cable in accordance with claim 11 wherein said thin cut extends to about 85% of the distance through said dielectric member.