GB1500162A - Rotating radiation pattern compound aerial - Google Patents

Rotating radiation pattern compound aerial

Info

Publication number
GB1500162A
GB1500162A GB1057675A GB1057675A GB1500162A GB 1500162 A GB1500162 A GB 1500162A GB 1057675 A GB1057675 A GB 1057675A GB 1057675 A GB1057675 A GB 1057675A GB 1500162 A GB1500162 A GB 1500162A
Authority
GB
United Kingdom
Prior art keywords
aerials
radio frequency
primary
antennas
coaxial
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
GB1057675A
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.)
International Standard Electric Corp
Original Assignee
International Standard Electric 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 International Standard Electric Corp filed Critical International Standard Electric Corp
Publication of GB1500162A publication Critical patent/GB1500162A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H01Q3/44—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the electric or magnetic characteristics of reflecting, refracting, or diffracting devices associated with the radiating element
    • 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
    • H01Q3/24—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the orientation by switching energy from one active radiating element to another, e.g. for beam switching

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)
  • Waveguide Aerials (AREA)

Abstract

1500162 Aerials INTERNATIONAL STANDARD ELECTRIC CORP 13 March 1975 [14 March 1974] 10576/75 Heading H4A Radio frequency primary aerials 1a, 1b producing a rotating radiation pattern, such as used in TACAN systems, may be symmetrically and vertically stacked so that the radiation below the horizon is reduced to zero where the side lobe maximum of a single primary aerial would occur and the main beam is maintained at the same elevation as a single primary aerial (Figs. 3a and 3c, not shown), the degree of modulation being maintained approximately constant over the operational elevation range of the system. As claimed, a rotating pattern compound aerial comprises at least two elementary aerials 1a, 1b each having an active antenna 2a, 2b normal to and coaxial with a circular ground plate 3a, 3b and a circular ring of parasitic elements 5a, 5b coaxial with the active antenna; radio frequency energy supply means and control means for switching the parasitic elements in turn, the ground plates of the primary aerials being spaced parallel and coaxial, there being means for equally dividing the radio frequency energy supplied between the active antennas with a phase shift of #/n where n is the number of primary aerials. One embodiment described is a two-tier TACAN system (Fig. 1) in which the radiation pattern is stated to be undisturbed by the feed (Fig. 7). Radio frequency power is equally divided between frusto-conical active antennas 2a, 2b of length #/4 to #/2 where # is the wavelength corresponding to the radio frequency used. The antennas are fed through different lengths la, lb of semi rigid coaxial cable to give the required phase shift. The antennas are insulated from their respective ground plates by dielectric rings 18a, 18b the heights of which provide impedance matching to cables 10a, 10b. Ferrite rings 19 decouple the antenna 2b from tube 13. Parasitic switching circuits located in spaces 15-1, 15-2 are controlled through leads 14-1, 14-2. Other embodiments (not shown) include a three-tier TACAN system.
GB1057675A 1974-03-14 1975-03-13 Rotating radiation pattern compound aerial Expired GB1500162A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7408632A FR2264405B1 (en) 1974-03-14 1974-03-14

Publications (1)

Publication Number Publication Date
GB1500162A true GB1500162A (en) 1978-02-08

Family

ID=9136297

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1057675A Expired GB1500162A (en) 1974-03-14 1975-03-13 Rotating radiation pattern compound aerial

Country Status (3)

Country Link
DE (1) DE2510268A1 (en)
FR (1) FR2264405B1 (en)
GB (1) GB1500162A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0172626A1 (en) * 1984-07-02 1986-02-26 Canadian Patents and Development Limited Adaptive array antenna
EP1503449A1 (en) * 2003-08-01 2005-02-02 EADS Deutschland GmbH Phased array antenna for data transmission between movable devices, in particular aircrafts

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4074268A (en) * 1976-06-21 1978-02-14 Hoffman Electronics Corporation Electronically scanned antenna
FR2666178A1 (en) * 1990-08-21 1992-02-28 Etudes Realis Protect Electron HIGH FREQUENCY EMITTING OR RECEIVING ANTENNA DEVICE.

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0172626A1 (en) * 1984-07-02 1986-02-26 Canadian Patents and Development Limited Adaptive array antenna
EP1503449A1 (en) * 2003-08-01 2005-02-02 EADS Deutschland GmbH Phased array antenna for data transmission between movable devices, in particular aircrafts

Also Published As

Publication number Publication date
FR2264405A1 (en) 1975-10-10
FR2264405B1 (en) 1977-10-07
DE2510268A1 (en) 1975-09-18

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Legal Events

Date Code Title Description
PS Patent sealed
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee