GB1500162A - Rotating radiation pattern compound aerial - Google Patents
Rotating radiation pattern compound aerialInfo
- 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
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.
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 (3)
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 |
CN114069253A (en) * | 2021-11-30 | 2022-02-18 | 广东曼克维通信科技有限公司 | Dual-polarized ultra-wideband yagi antenna |
Families Citing this family (2)
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. |
-
1974
- 1974-03-14 FR FR7408632A patent/FR2264405B1/fr not_active Expired
-
1975
- 1975-03-08 DE DE19752510268 patent/DE2510268A1/en active Pending
- 1975-03-13 GB GB1057675A patent/GB1500162A/en not_active Expired
Cited By (3)
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 |
CN114069253A (en) * | 2021-11-30 | 2022-02-18 | 广东曼克维通信科技有限公司 | Dual-polarized ultra-wideband yagi antenna |
Also Published As
Publication number | Publication date |
---|---|
DE2510268A1 (en) | 1975-09-18 |
FR2264405B1 (en) | 1977-10-07 |
FR2264405A1 (en) | 1975-10-10 |
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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 |