US1937559A - Cable for transmitting high frequency electrical energy - Google Patents

Cable for transmitting high frequency electrical energy Download PDF

Info

Publication number
US1937559A
US1937559A US226291A US22629127A US1937559A US 1937559 A US1937559 A US 1937559A US 226291 A US226291 A US 226291A US 22629127 A US22629127 A US 22629127A US 1937559 A US1937559 A US 1937559A
Authority
US
United States
Prior art keywords
conductor
high frequency
cable
tubular
electrical energy
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US226291A
Other languages
English (en)
Inventor
Franklin Charles Samuel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
RCA Corp
Original Assignee
RCA Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by RCA Corp filed Critical RCA Corp
Application granted granted Critical
Publication of US1937559A publication Critical patent/US1937559A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B11/00—Communication cables or conductors
    • H01B11/18—Coaxial cables; Analogous cables having more than one inner conductor within a common outer conductor
    • H01B11/1834—Construction of the insulation between the conductors
    • H01B11/1856—Discontinuous insulation

Definitions

  • This invention relates to cables for transmitting high frequency electrical energy, and more particularly to cables such as those used for conveying energy at frequencies of the order of 12 x 10 cycles per second to or from a radio aerial for purposes of short wave radio telegraphv and telephony.
  • the primary object of this invention is to provide a transmission cable which will be extremely emcient at high frequencies.
  • Another object of the invention is to provide a cable simple in structure which will be durable and can be cheaply manufactured.
  • Fig. 1 is a longitudinal sectional view of the preferred form of the invention.
  • Fig. 2 is a sectional view taken on the'section A A of Fig. 1. i
  • a high frequency cable comprises an inner conductor located within an outer conductor and substantially air insulated therefrom.
  • the outer conductor is earthed throughout.
  • the inner and outer conductors are arranged concentrically, and in the preferred form of the invention are formed as tubes or channels which may be of any desired section.
  • the high frequency cable comprises two concentric tubular conductors 1 and 2.
  • the outer conductor 2 is earthed throughout as indicated in the drawing.
  • the inner conductor 1 is spaced from the outer conductor 2 by means of members 4 in the form of hard rubber or the like rings surrounding conductor 1 which members in turn carry mica, porcelain or glass insulating supports 3, located at different points in the length of the cable, and so formed and arranged that there is no cross section of the cable at which the space between the inner and outer conductors is wholly occupied by the insulating supports.
  • the inner conductor is substantially air insulated from the outer, and it will be seen' that the insulating supports 3 have a large leakage surface.
  • an inner tubular conductor in-
  • an inner tubular conductor In radio apparatus for conveying energy at high frequencies, an inner tubular conductor,
  • mica insulating members carried by said conductor and spaced therefrom by means of a plurality of non-metallic rings, and a grounded outer tubular conductor retained in position relative to said inner conductor by said insulating members.
  • a high frequency transmission cable comprising an inner tubular conductor for conducting high frequency currents located within and substantially air insulated from an outer tubular conductor the diameter of which is substantially 3.7 times that of the inner conductor.
  • a high frequency transmission cable for emciently conducting high frequency currents comprising an inner conductor locatedwithin and substantially air insulated from an outer tubular conductor, said inner conductor retained concentrically within said outer conductor by a plurality of substantially tubular insulators having a plurality of central lobes, said insulators being spaced apart from said inner conductor by a pair of rings located at each end of said insulators.
  • a high frequency transmission line comprising inner and outer tubular conductors, a plurality of tubular insulators having a plurality of central external lobes, each of said. insulators cooperating with a pair of insulatedrings to retain said inner conductor concentric within said outer conductor.
  • a high frequency conductor for efficiently transmitting high frequency currents comprising an inner and outer tubular conductor, a tubular insulator having a plurality of central external lobes, a pair of rings retained within each end of said insulators to concentrically space apart said inner conductor from the outer conductor.
  • a high frequency transmission cable comprising an outer and inner concentric tubular conductor, a plurality of insulators spaced at intervals between said conductors, each of said insulators having a plurality of central projections which touch the inner surface of said outer conductor, said projections being rounded at their point of contact with said outer conductor to provide a point of contact therewith, and spacing m'eans at the ends of said insulators to touch the outer-surface of said inner conductor.
  • a high frequency transmission cable comprising an outer tubular and inner cylindrical conductor, said conductors being arranged concentrically and being spaced from each other by ;plurality of outer contact points being arranged centrally on the outer surface of said insulator and the inner contact points of said insulator being longitudinally spaced and not in line with the outer central contact points.
  • a high frequency transmission cable comprising concentric tubular conductors, said conductors being spaced from each other at intervals by tubular insulators having a plurality of central spacing projections and a pair of rings located at each end of said insulators cooperating with the insulators to retain each of said conductors in concentric relationship.
  • tubular insulating members interposed between said conductors for holding said conductors in spaced relation, said insulating members being of relatively small axial length and having a pluralityof central projections, said projections being rounded over at their point of contact to provide a substantial point contact with one of the conductors.
  • an inner conductor and an outer conductor insulating members of relatively small axial length having a plurality of central projections substantially rounded over at their point of contact with the outer conductor, said outer conductor surrounding said insulating members and the inner conductor which is retained concentrically in position with respect thereto and substantially air insulated therefrom by said insulating members.

Landscapes

  • Insulated Conductors (AREA)
US226291A 1926-10-19 1927-10-15 Cable for transmitting high frequency electrical energy Expired - Lifetime US1937559A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1937559X 1926-10-19

Publications (1)

Publication Number Publication Date
US1937559A true US1937559A (en) 1933-12-05

Family

ID=10894085

Family Applications (1)

Application Number Title Priority Date Filing Date
US226291A Expired - Lifetime US1937559A (en) 1926-10-19 1927-10-15 Cable for transmitting high frequency electrical energy

Country Status (2)

Country Link
US (1) US1937559A (enrdf_load_stackoverflow)
BE (1) BE345856A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2736175A (en) * 1956-02-28 Electrically operated absorption

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2736175A (en) * 1956-02-28 Electrically operated absorption

Also Published As

Publication number Publication date
BE345856A (enrdf_load_stackoverflow)

Similar Documents

Publication Publication Date Title
US2438913A (en) High-frequency filter structure
US2769148A (en) Electrical conductors
US2280728A (en) Telescoping high frequency electrical conductor
US2519933A (en) Rotatable joint for coaxial cables
US2226479A (en) Apparatus for mechanically and electrically connecting conductors carrying high frequency currents
US1841473A (en) Arrangement for connecting or terminating coaxial conductors
US3433890A (en) Signal transmission cable
GB589071A (en) Improvements in protective shields in high-voltage apparatus
US2044580A (en) Transmission line
US2338441A (en) Ultra high frequency cable
US2381003A (en) Insulated electric conductor
US3227800A (en) Coaxial cable and inner conductor support member
US1937559A (en) Cable for transmitting high frequency electrical energy
US2158496A (en) Transmission line
US2237792A (en) Antenna system and feeder
US1978418A (en) Concentric return multiconductor cable
US2018353A (en) Transmission line
DK163619B (da) Elektrisk forbindelsesklemme
US2029420A (en) Concentric conductor transmission system
US2644140A (en) Variable-length transmission line
US2503952A (en) Traveling wave antenna
US2187584A (en) High frequency energy line
US2218085A (en) Low loss cable
US2180722A (en) Lead-in arrangement
US1885195A (en) Concentric conductor transmission system