GB1412569A - Antenna system using variable phase pattern synthesis - Google Patents
Antenna system using variable phase pattern synthesisInfo
- Publication number
- GB1412569A GB1412569A GB784674A GB784674A GB1412569A GB 1412569 A GB1412569 A GB 1412569A GB 784674 A GB784674 A GB 784674A GB 784674 A GB784674 A GB 784674A GB 1412569 A GB1412569 A GB 1412569A
- Authority
- GB
- United Kingdom
- Prior art keywords
- excitation
- phase
- excitations
- dipoles
- component
- 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
- H01Q3/26—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 relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
- H01Q19/10—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
- H01Q21/22—Antenna units of the array energised non-uniformly in amplitude or phase, e.g. tapered array or binomial array
Landscapes
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Waveguide Aerials (AREA)
Abstract
1412569 Aerials HAZELTINE CORP 21 Feb 1974 [25 May 1973] 7846/74 Heading H4A An aerial system providing a desired radiation pattern comprises an aperture and means for supplying thereto a composite wave energy excitation having amplitude and phase distributions substantially equivalent to the superposition of a plurality of component aperture excitations. Said plurality includes a reference component excitation and other component excitations, having both positive and negative phase variations on said aperture with respect to said reference excitation, any said component excitation with positive phase variation having with respect to said reference excitation an average phase displacement which is a first monotonic function of said phase variation, and any said component excitation with negative phase variation having with respect to said reference excitation an average phase displacement which is a second monotonic function of said phase variation. All excitations have the same sense of average phase displacement. In a first embodiment a collinear array of dipoles 10a to 10h, Fig. 1a, is mounted in front of a ground plane 11. Transmission lines 12a to 12h connect the dipoles to respective directional couplers 13a to 13h. The directional couplers are in series and are connected to a common input port by a transmission line 14. Resistive terminations 15 are provided for the end of the line 14, and for the isolated outputs of the directional couplers. The amplitude of the signal fed to each dipole is dependent upon the value of the coupling co-efficient of its associated directional coupler, and the phase thereof is dependent upon the electrical length back to the input port as determined by the main and branch transmission lines and the directional coupler. It is evident that individual adjustments may be made of the amplitudes and phases of the signals which are simultaneously coupled to the dipoles 10a to 10h. For example, it may be desired to obtain a substantially uniform amplitude of wave energy over an angle of A, without radiation outside that angle. This may be obtained by superposition of the component uniform amplitude excitations 17<1>a to 17<1>e, Fig. 4a. In this figure, the excitations 17<1>a and 17<1>e have the same average phase displacement x<1>, and the excitations 17<1>b and 17<1>d have the same average phase displacement x, from the excitation of reference phase 17<1>c. The amplitudes of the resultant excitations for the various dipoles vary little from an average value (Fig. 4b, not shown) as compared with a prior art arrangement, where those for the dipoles 10d, 10e greatly exceed those for the other dipoles (Fig. 3b, not shown). In another embodiment, a linear array of slots 20a to 20l, Fig. 5a, in a narrow wall of a rectangular waveguide 19 is fed from one end thereof. The amplitude of the excitation of a particular slot is determined by the angle of inclination of the slot, and its phase by the position along the waveguide of the slot. The arrays may be operated in association with reflective or transmissive focusing means. The invention may be extended to planar or cylindrical arrays of elements.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US364182A US3903524A (en) | 1973-05-25 | 1973-05-25 | Antenna system using variable phase pattern synthesis |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1412569A true GB1412569A (en) | 1975-11-05 |
Family
ID=23433406
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB784674A Expired GB1412569A (en) | 1973-05-25 | 1974-02-21 | Antenna system using variable phase pattern synthesis |
Country Status (14)
Country | Link |
---|---|
US (1) | US3903524A (en) |
JP (1) | JPS5542526B2 (en) |
BR (1) | BR7404223D0 (en) |
CA (1) | CA1021055A (en) |
CS (1) | CS229603B2 (en) |
DD (1) | DD113134A5 (en) |
DE (1) | DE2423899C2 (en) |
FR (1) | FR2231126B1 (en) |
GB (1) | GB1412569A (en) |
IL (1) | IL44560A (en) |
IT (1) | IT1010297B (en) |
NL (1) | NL177869C (en) |
PL (1) | PL94571B1 (en) |
SE (1) | SE389770B (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3003324A1 (en) * | 1979-01-30 | 1980-08-14 | Sperry Corp | METHOD AND ANTENNA FOR OBTAINING PRESELECTED FIELD ANTENNA DIAGRAMS |
EP0322109A2 (en) * | 1987-11-30 | 1989-06-28 | Gpt Limited | Distributed antenna system |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3102110A1 (en) * | 1981-01-23 | 1982-08-19 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | PHASE CONTROLLED GROUP ANTENNA |
GB2111310B (en) * | 1981-11-27 | 1985-07-03 | Marconi Co Ltd | Antenna array |
US5546095A (en) * | 1994-06-02 | 1996-08-13 | Lopez; Alfred R. | Non-imaging glideslope antenna systems |
JP3332329B2 (en) * | 1997-06-02 | 2002-10-07 | 株式会社エヌ・ティ・ティ・ドコモ | Adaptive array antenna device |
US6512934B2 (en) | 1997-06-02 | 2003-01-28 | Ntt Mobile Communications Network, Inc. | Adaptive array antenna |
GB0005979D0 (en) * | 2000-03-14 | 2001-03-07 | Bae Sys Defence Sys Ltd | An active phased array antenna assembly |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2730717A (en) * | 1951-04-18 | 1956-01-10 | Katchky Max | Directional wave antenna for marine radar use |
US2878472A (en) * | 1954-12-14 | 1959-03-17 | Hughes Aircraft Co | High efficiency broadband antenna array |
US3182325A (en) * | 1960-09-21 | 1965-05-04 | Gen Electric | Array pattern modification |
US2981944A (en) * | 1960-12-06 | 1961-04-25 | Gen Precision Inc | Microwave navigation system |
US3259902A (en) * | 1961-10-04 | 1966-07-05 | Dorne And Margolin Inc | Antenna with electrically variable reflector |
US3258774A (en) * | 1963-12-30 | 1966-06-28 | Gen Electric | Series-fed phased array |
US3526898A (en) * | 1967-04-03 | 1970-09-01 | Raytheon Co | Antenna with translational and rotational compensation |
US3604010A (en) * | 1969-01-30 | 1971-09-07 | Singer General Precision | Antenna array system for generating shaped beams for guidance during aircraft landing |
JPS524812Y2 (en) * | 1971-01-26 | 1977-02-01 |
-
1973
- 1973-05-25 US US364182A patent/US3903524A/en not_active Expired - Lifetime
-
1974
- 1974-02-21 CA CA193,191A patent/CA1021055A/en not_active Expired
- 1974-02-21 GB GB784674A patent/GB1412569A/en not_active Expired
- 1974-03-06 SE SE7402998A patent/SE389770B/en not_active IP Right Cessation
- 1974-03-29 FR FR7411385A patent/FR2231126B1/fr not_active Expired
- 1974-04-03 IL IL44560A patent/IL44560A/en unknown
- 1974-04-30 IT IT22143/74A patent/IT1010297B/en active
- 1974-05-13 JP JP5316774A patent/JPS5542526B2/ja not_active Expired
- 1974-05-16 DE DE2423899A patent/DE2423899C2/en not_active Expired
- 1974-05-21 PL PL1974171299A patent/PL94571B1/en unknown
- 1974-05-22 CS CS743662A patent/CS229603B2/en unknown
- 1974-05-23 BR BR4223/74A patent/BR7404223D0/en unknown
- 1974-05-24 NL NLAANVRAGE7407043,A patent/NL177869C/en not_active IP Right Cessation
- 1974-05-27 DD DD178778A patent/DD113134A5/en unknown
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3003324A1 (en) * | 1979-01-30 | 1980-08-14 | Sperry Corp | METHOD AND ANTENNA FOR OBTAINING PRESELECTED FIELD ANTENNA DIAGRAMS |
EP0322109A2 (en) * | 1987-11-30 | 1989-06-28 | Gpt Limited | Distributed antenna system |
EP0322109A3 (en) * | 1987-11-30 | 1989-11-29 | Gpt Limited | Distributed antenna system |
Also Published As
Publication number | Publication date |
---|---|
FR2231126A1 (en) | 1974-12-20 |
DE2423899A1 (en) | 1974-12-12 |
US3903524A (en) | 1975-09-02 |
IL44560A0 (en) | 1974-06-30 |
CS229603B2 (en) | 1984-06-18 |
JPS5542526B2 (en) | 1980-10-31 |
PL94571B1 (en) | 1977-08-31 |
NL7407043A (en) | 1974-11-27 |
DD113134A5 (en) | 1975-05-12 |
DE2423899C2 (en) | 1986-10-09 |
IT1010297B (en) | 1977-01-10 |
FR2231126B1 (en) | 1980-05-30 |
SE389770B (en) | 1976-11-15 |
BR7404223D0 (en) | 1975-01-21 |
AU6580574A (en) | 1975-08-21 |
NL177869C (en) | 1985-12-02 |
CA1021055A (en) | 1977-11-15 |
IL44560A (en) | 1976-09-30 |
NL177869B (en) | 1985-07-01 |
JPS5049965A (en) | 1975-05-06 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PE20 | Patent expired after termination of 20 years |
Effective date: 19940220 |