GB1414016A - Radiating cable system - Google Patents

Radiating cable system

Info

Publication number
GB1414016A
GB1414016A GB2352873A GB2352873A GB1414016A GB 1414016 A GB1414016 A GB 1414016A GB 2352873 A GB2352873 A GB 2352873A GB 2352873 A GB2352873 A GB 2352873A GB 1414016 A GB1414016 A GB 1414016A
Authority
GB
United Kingdom
Prior art keywords
cable
cables
phase shift
signals
equal
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
Application number
GB2352873A
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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 Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Priority to GB2352873A priority Critical patent/GB1414016A/en
Publication of GB1414016A publication Critical patent/GB1414016A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
    • H01Q13/20—Non-resonant leaky-waveguide or transmission-line antennas; Equivalent structures causing radiation along the transmission path of a guided wave
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q11/00—Electrically-long antennas having dimensions more than twice the shortest operating wavelength and consisting of conductive active radiating elements
    • H01Q11/02—Non-resonant antennas, e.g. travelling-wave antenna
    • H01Q11/04—Non-resonant antennas, e.g. travelling-wave antenna with parts bent, folded, shaped, screened or electrically loaded to obtain desired phase relation of radiation from selected sections of the antenna

Landscapes

  • Laying Of Electric Cables Or Lines Outside (AREA)

Abstract

1414016 Aerials; radio signalling STANDARD TELEPHONES & CABLES Ltd 17 May 1973 23528/73 Headings H4A and H4L A radiating cable arrangement, which may be installed along a roadway for broadcasting radio signals to drivers, comprises two closely spaced parallel cables A, B of the same kind, e.g. slotted co-axial type, and of equal overall lengths. The cable A, however, is sub-divided into two (or more) equal sections. R.F. signals are fed to the cables at one end of the arrangement, directly in the case of the cable A, and through means, such as length of fully screened cable K, in the case of the cable B, whereby a predetermined phase shift is introduced. Lengths of fully screened cable K<1> connect each adjacent pair of sections of the cable A, and provide a total phase shift which is equal to the aforesaid predetermined phase shift. The effect is, that at the beginning of each section of the cable A the signals in the two cables are brought more nearly into phase, so stepping up the magnitude of their resultant and compensating for attenuation over the previous section (Fig. 3, not shown). A typical value for the pre-determined phase shift provided by the cable K is 168 degrees (Fig. 2, not shown). Impedance matching between the cables and the signal source may be necessary.
GB2352873A 1973-05-17 1973-05-17 Radiating cable system Expired GB1414016A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2352873A GB1414016A (en) 1973-05-17 1973-05-17 Radiating cable system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2352873A GB1414016A (en) 1973-05-17 1973-05-17 Radiating cable system

Publications (1)

Publication Number Publication Date
GB1414016A true GB1414016A (en) 1975-11-12

Family

ID=10197102

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2352873A Expired GB1414016A (en) 1973-05-17 1973-05-17 Radiating cable system

Country Status (1)

Country Link
GB (1) GB1414016A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2142508A (en) * 1983-06-29 1985-01-16 Private Mobile Rentals Limited Improvements relating to communications systems

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2142508A (en) * 1983-06-29 1985-01-16 Private Mobile Rentals Limited Improvements relating to communications systems

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Legal Events

Date Code Title Description
PS Patent sealed
435 Patent endorsed 'licences of right' on the date specified (sect. 35/1949)
PCNP Patent ceased through non-payment of renewal fee