HIGH-FREQUENCY CABLE

• US 3,668,573 A
• Filed: 02/03/1971
• Issued: 06/06/1972
• Est. Priority Date: 02/24/1970
• Status: Expired due to Term

• Current Assignee: Kabelmetal Electro GmbH Kabelkamp
• Original Assignee: Helmut Martin
• Inventors: Martin, Helmut
• Primary Examiner(s): Saalbach, Herman Karl
• Assistant Examiner(s): Nussbaum, Marvin
• Application Number:
  US05/112,306
• Time in Patent Office: 489 Days
• Field of Search: 333/84,84L,96,95S 343/767-771 340/258R,258A,258B,258C,258D
• US Class Current: 333/237
• CPC Class Codes: H01P 3/00 Waveguides; Transmission lines of the waveguide type
• CPC Class Codes: H01P 3/02 with two longitudinal conductors
• CPC Class Codes: H01Q 13/203 Leaky coaxial lines

Abstract

An h.f. cable with two conductors in a dielectric substance enveloped by a shield with an axial slot which is covered by a copper foil.

Claims

2. A high frequency cable, as set forth in claim 1, wherein the slot is disposed axially symmetrical to the cores of the pair, for concentrating the field lines symmetrically to a plane through a center line between the cores and an axial center line through the slot.

3. A high frequency cable, as set forth in claim 1, the shield having a plurality of parallelly extending slots.

4. A high frequency cable, in accordance with claim 1, wherein the dielectric material is air, there being spacer and support means for supporting the shield on the cores.

5. A high frequency cable, as in claim 1, the dielectric material being a solid material serving as spacer for the two conductor cores as well as support for the shield in relation to the cores of the pair.

6. A high frequency cable as in claim 1, the slot being covered by a thin metal foil of low magnetic permeability and high electric conductivity.

7. A cable as in claim 6, the foil being made of copper.