Impedance matching device

Patent metadata

Field	Value
Publication number	US-9928941-B2
Application number	US-201515109866-A
Country	US
Kind code	B2
Filing date	Jan 21, 2015
Priority date	Jan 21, 2014
Publication date	Mar 27, 2018
Grant date	Mar 27, 2018

Abstract

An electrical cable includes a first wire conductor separated from a second wire conductor and a compensation area proximate to, but separated from, an end portion of the cable and a method of manufacturing such an electrical cable. The first and second wire conductors are each connected to a contact element. The first and second wire conductors are separated by a first distance within the compensation area. The first and second wire conductors are separated by a second distance outside of the compensation area. The first distance is less than the second distance, thereby decreasing an impedance of the cable within the compensation area.

First claim

The invention claimed is:

1. A cable, comprising:
at least two conductors separated from each other and connectable to contact elements; and
a compensation area within an end portion of the cable, wherein a distance of the at least two conductors from each other is smaller within the compensation area than outside the compensation area, thereby decreasing an impedance of the cable within the compensation area.

2. The cable according to claim 1 , further comprising a clamping means configured to engage the cable in the compensation area and press it together such that the distance of the at least two conductors from each other is reduced.

3. The cable according to claim 1 , wherein an intermediate layer extends, at least in sections, between the cable and the clamping means.

4. The cable according to claim 3 , wherein the intermediate layer has a higher permittivity than the clamping means.

5. The cable according to claim 1 , wherein the at least two conductors are each surrounded by circumferential insulation, and wherein the insulation surrounding each of the at least two conductors are welded together at least in the compensation area.

6. The cable according to claim 1 , wherein a length of the compensation area is less than 70 millimeters.

7. The cable according to claim 1 , wherein a length of the compensation area and the distance of the at least two conductors from each other are selected such that a predetermined impedance value is not exceeded.

8. A method of manufacturing a cable, comprising the steps of:
providing a cable having at least two conductors which are separated from each other by insulation in a compensation area within an end portion of the cable;
reducing a distance of the at least two conductors from each other within the compensation area; and
fixing the distance of the at least two conductors from each other within the compensation area.

9. The method of manufacturing a cable according to claim 8 , wherein the steps of reducing the distance of the at least two conductors from each other and fixing the distance of the at least two conductors from each other are performed by clamping using a clamping means.

10. The method of manufacturing a cable according to claim 8 , wherein the steps of reducing the distance of the at least two conductors from each other and fixing the distance of the at least two conductors from each other are performed by introducing thermal energy into the compensation area such that the insulation is welded.

11. The method of manufacturing a cable according to claim 8 , wherein the step of reducing the distance of the at least two conductors from each other includes introducing thermal energy into the compensation area.

Assignees

• Delphi Tech Inc

Inventors

• Felgenhauer Reinhard
• Rucks Michael

Classifications

• H01P5/02 Primary

  with invariable factor of coupling (H01P5/12 takes precedence {choke joints H01P1/04, H01P1/06}) · CPC title

• H01B13/0023

  for welding together plastic insulated wires side-by-side · CPC title

• H01B7/009 Primary

  Cables with built-in connecting points or with predetermined areas for making deviations · CPC title

• H01P11/001

  Manufacturing waveguides or transmission lines of the waveguide type · CPC title

• H01P5/026

  between coaxial lines · CPC title