GB902125A - Improvements in or relating to directional aerials - Google Patents

Improvements in or relating to directional aerials

Info

Publication number
GB902125A
GB902125A GB592961A GB592961A GB902125A GB 902125 A GB902125 A GB 902125A GB 592961 A GB592961 A GB 592961A GB 592961 A GB592961 A GB 592961A GB 902125 A GB902125 A GB 902125A
Authority
GB
United Kingdom
Prior art keywords
lines
disc
strips
transmission lines
feb
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
GB592961A
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.)
CIE GENERALE DE TELEGRAPH SANS
Thales SA
Original Assignee
CIE GENERALE DE TELEGRAPH SANS
CSF Compagnie Generale de Telegraphie sans Fil SA
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 CIE GENERALE DE TELEGRAPH SANS, CSF Compagnie Generale de Telegraphie sans Fil SA filed Critical CIE GENERALE DE TELEGRAPH SANS
Publication of GB902125A publication Critical patent/GB902125A/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
    • H01Q13/28—Non-resonant leaky-waveguide or transmission-line antennas; Equivalent structures causing radiation along the transmission path of a guided wave comprising elements constituting electric discontinuities and spaced in direction of wave propagation, e.g. dielectric elements or conductive elements forming artificial dielectric
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S1/00—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith
    • G01S1/02—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith using radio waves
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
    • H01Q3/12—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical relative movement between primary active elements and secondary devices of antennas or antenna systems
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
    • H01Q3/12—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical relative movement between primary active elements and secondary devices of antennas or antenna systems
    • H01Q3/14—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical relative movement between primary active elements and secondary devices of antennas or antenna systems for varying the relative position of primary active element and a refracting or diffracting device

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)

Abstract

902,125. Directive aerial systems. COMPAGNIE GENERALE DE TELEGRAPHIE SANS FIL. Feb. 17, 1961 [Feb. 19, 1960], No. 5929/61. Class 40 (7). A directional aerial system comprises a number of coplanar transmission lines 1 radially arranged with respect to a central point O, each of the lines carrying and feeding a plurality of equi-spaced radiating elements 2. Co-operating with the transmission lines is a rotatable member having differing parts included in the lines to determine the propagation velocity therealong and thus to determine the directive pattern of the system. Rotating this member changes the directivity of the system. As described, the lines are three-plane strip lines and are formed by a circular outer conductive plate 10, a central disc 15 of insulating material on which are formed radial metallic strips 16 arranged as indicated by the lines 1 of Fig. 1 and a circular inner conductive plate 11. The strips 16 carry unipole radiating elements 20 extending through holes 17 in the outer plate 10. Energy is fed to the system by a coaxial line 12, the outer conductor 13 of which is attached to the centre of inner plate 11 and the inner conductor 14 to the central point to which the strips 16 converge on disc 15. The rotatable member 18 is also a disc and is formed in dielectric material, preferably material with a dielectric constant of approximately ten. It may have a similar number of sectors to the number of transmission lines with each sector of constant thickness and the sectors varying successively from a minimum to a maximum and back. The member 18 may conveniently be rotated by a wheel in contact with its periphery. Under certain circumstances the disc 18 requires to have a thickness constant along a radial line but varying continuously angularly round its axis. Equations are given relating the direction made by the radiation lobe axis to the design parameters of the system. It is stated that the flat compact aerial systems that can be produced are well suited for use on aircraft or engines. The rotatable part of the system, when mounted, can be arranged to be within the vehicle structure.
GB592961A 1960-02-19 1961-02-17 Improvements in or relating to directional aerials Expired GB902125A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR818987A FR1257215A (en) 1960-02-19 1960-02-19 Improvements to rotating aerials

Publications (1)

Publication Number Publication Date
GB902125A true GB902125A (en) 1962-07-25

Family

ID=8725489

Family Applications (1)

Application Number Title Priority Date Filing Date
GB592961A Expired GB902125A (en) 1960-02-19 1961-02-17 Improvements in or relating to directional aerials

Country Status (2)

Country Link
FR (1) FR1257215A (en)
GB (1) GB902125A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4641145A (en) * 1981-09-23 1987-02-03 U.S. Philips Corporation Microwave antenna having an array of radiating elements for circularly polarized signals

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2662026B1 (en) * 1990-05-11 1992-07-10 Thomson Csf PLANE ORIENTABLE ANTENNA, OPERATING IN MICROWAVE.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4641145A (en) * 1981-09-23 1987-02-03 U.S. Philips Corporation Microwave antenna having an array of radiating elements for circularly polarized signals

Also Published As

Publication number Publication date
FR1257215A (en) 1961-03-31

Similar Documents

Publication Publication Date Title
US2368663A (en) Broad band antenna
US2532551A (en) Biconical electromagnetic horn antenna
US2677766A (en) Scalloped limacon pattern antenna
GB2360134B (en) Dielectric resonator antenna array with steerable elements
GB647890A (en) Directional antenna systems
US3568207A (en) Parallel-plate feed system for a circular array antenna
US2977594A (en) Spiral doublet antenna
US3972043A (en) Cross-polarizing lens reflector
GB2165097A (en) Biconical antennae
GB1532010A (en) Omnidirectional antenna array
GB1338753A (en) Multimode antenna
US2938208A (en) Omnirange beacon antenna having rotating parasitic conductive elements
US3386099A (en) Multiple luneberg lens antenna
US2935746A (en) Spiral trough antennas
US3683385A (en) Direction finding antenna system
US3055003A (en) Spiral antenna array with polarization adjustment
US2969542A (en) Spiral antenna system with trough reflector
US2595271A (en) Antenna lobe shifting device
GB902125A (en) Improvements in or relating to directional aerials
GB647136A (en) Directional antenna systems
GB1081241A (en) Wide-band radio direction-finders
US2889552A (en) Antenna unit
US2947000A (en) Beacon antenna using spiral
GB732827A (en) Improvements in or relating to short wave directional aerials
GB1387679A (en) Antenna