GB641474A - Propagation of radio waves through a tunnel - Google Patents

Propagation of radio waves through a tunnel

Info

Publication number
GB641474A
GB641474A GB15989/47A GB1598947A GB641474A GB 641474 A GB641474 A GB 641474A GB 15989/47 A GB15989/47 A GB 15989/47A GB 1598947 A GB1598947 A GB 1598947A GB 641474 A GB641474 A GB 641474A
Authority
GB
United Kingdom
Prior art keywords
tunnel
aerial
propagation
radio waves
transmission line
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
GB15989/47A
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.)
Bendix Aviation Corp
Original Assignee
Bendix Aviation 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 Bendix Aviation Corp filed Critical Bendix Aviation Corp
Publication of GB641474A publication Critical patent/GB641474A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/27—Adaptation for use in or on movable bodies
    • H01Q1/32—Adaptation for use in or on road or rail vehicles
    • H01Q1/3208—Adaptation for use in or on road or rail vehicles characterised by the application wherein the antenna is used
    • H01Q1/3225—Cooperation with the rails or the road
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P3/00—Waveguides; Transmission lines of the waveguide type
    • H01P3/02—Waveguides; Transmission lines of the waveguide type with two longitudinal conductors
    • H01P3/08—Microstrips; Strip lines
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/44—Details of, or arrangements associated with, antennas using equipment having another main function to serve additionally as an antenna, e.g. means for giving an antenna an aesthetic aspect
    • H01Q1/46—Electric supply lines or communication lines
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Near-Field Transmission Systems (AREA)
  • Details Of Aerials (AREA)

Abstract

641,474. Aerial coupling arrangements; radio signalling; aerials. BENDIX AVIATION CORPORATION. June 17, 1947, No. 15989. Convention date, July 31, 1946. [Classes 40 (v) and 40 (vii)] Radio signals are propagated through the length of a tunnel by means of an unbalanced' transmission line coupled to an aerial at each end of the tunnel. The conductor 10 and the earthed screen of spaced parallel conductors 12 secured to the ceiling of the tunnel 16 from the transmission line which is terminated at one or both ends in a rhombic aerial, Fig. 3 (not shown), matched to the line. The aerial of a train in the tunnel is shown at 13.
GB15989/47A 1946-07-31 1947-06-17 Propagation of radio waves through a tunnel Expired GB641474A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US687479A US2478133A (en) 1946-07-31 1946-07-31 Propagation of radio waves through a tunnel

Publications (1)

Publication Number Publication Date
GB641474A true GB641474A (en) 1950-08-16

Family

ID=24760594

Family Applications (1)

Application Number Title Priority Date Filing Date
GB15989/47A Expired GB641474A (en) 1946-07-31 1947-06-17 Propagation of radio waves through a tunnel

Country Status (3)

Country Link
US (1) US2478133A (en)
FR (1) FR959929A (en)
GB (1) GB641474A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2948953A1 (en) * 1979-08-24 1981-03-26 Siemens AG, 1000 Berlin und 8000 München Antenna installation for road tunnel, mine shaft, etc. - has uniformly spaced insulating supports for continuous wire, with ferritic ring at each support
DE3317869A1 (en) * 1983-05-17 1984-11-29 Flachenecker, Gerhard, Prof. Dr.-Ing., 8012 Ottobrunn Leaky feeder along a motorway
DE19541650A1 (en) * 1995-11-08 1997-05-15 Siemens Ag Wire antenna, e.g. for video signal transmission between video camera and moving train

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2734170A (en) * 1951-06-22 1956-02-07 Sazanl
US2980793A (en) * 1956-06-11 1961-04-18 Electronic Safety Engineering Restricted range radio transmitting system
US3867710A (en) * 1960-05-02 1975-02-18 Itt Communication system
US3290626A (en) * 1964-12-28 1966-12-06 Hafner Theodore Surface wave transmission
US3534303A (en) * 1967-04-20 1970-10-13 Theodore Hafner Surface wave transmission
US3735265A (en) * 1970-11-24 1973-05-22 Gureckis P Radio communication/control system for restricted range signaling near the earth{40 s surface
US3871302A (en) * 1973-09-26 1975-03-18 Consolidation Coal Co Trolley control system
US4001774A (en) * 1975-01-08 1977-01-04 Exxon Production Research Company Method of transmitting signals from a drill bit to the surface
US4097808A (en) * 1976-04-02 1978-06-27 Marine Electric Corporation Entertainment system and method
CH627879A5 (en) * 1978-06-06 1982-01-29 Siemens Ag Albis Antenna system
US5230085A (en) * 1991-04-05 1993-07-20 E-Systems, Inc. Method and apparatus for wireless electromagnetic communication within a contained electromagnetic field
FR2679891B1 (en) * 1991-08-01 1993-10-22 Acb METHOD FOR REMOTE INTERVENTION IN A WELL, PARTICULARLY IN A DEEP NUCLEAR WASTE STORAGE SITE.
US9198056B2 (en) 2012-10-22 2015-11-24 CenturyLink Itellectual Property LLC Optimized distribution of wireless broadband in a building

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1985241A (en) * 1931-07-10 1934-12-25 Daya Werner Device for removing disturbances in wireless transmission
US2201472A (en) * 1937-04-26 1940-05-21 Jewel D Browder Communication system
US2297925A (en) * 1940-04-06 1942-10-06 Rca Corp Antenna system
US2407417A (en) * 1944-12-19 1946-09-10 Farnsworth Television & Radio Communications system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2948953A1 (en) * 1979-08-24 1981-03-26 Siemens AG, 1000 Berlin und 8000 München Antenna installation for road tunnel, mine shaft, etc. - has uniformly spaced insulating supports for continuous wire, with ferritic ring at each support
DE3317869A1 (en) * 1983-05-17 1984-11-29 Flachenecker, Gerhard, Prof. Dr.-Ing., 8012 Ottobrunn Leaky feeder along a motorway
DE19541650A1 (en) * 1995-11-08 1997-05-15 Siemens Ag Wire antenna, e.g. for video signal transmission between video camera and moving train

Also Published As

Publication number Publication date
FR959929A (en) 1950-04-07
US2478133A (en) 1949-08-02

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