GB1355030A - Antenna feed system - Google Patents
Antenna feed systemInfo
- Publication number
- GB1355030A GB1355030A GB1738573A GB1738573A GB1355030A GB 1355030 A GB1355030 A GB 1355030A GB 1738573 A GB1738573 A GB 1738573A GB 1738573 A GB1738573 A GB 1738573A GB 1355030 A GB1355030 A GB 1355030A
- Authority
- GB
- United Kingdom
- Prior art keywords
- horn
- ghz
- section
- arms
- bands
- 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
- H01Q25/00—Antennas or antenna systems providing at least two radiating patterns
- H01Q25/02—Antennas or antenna systems providing at least two radiating patterns providing sum and difference patterns
-
- 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
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
- G01S13/06—Systems determining position data of a target
- G01S13/42—Simultaneous measurement of distance and other co-ordinates
- G01S13/44—Monopulse radar, i.e. simultaneous lobing
- G01S13/4409—HF sub-systems particularly adapted therefor, e.g. circuits for signal combination
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/40—Imbricated or interleaved structures; Combined or electromagnetically coupled arrangements, e.g. comprising two or more non-connected fed radiating elements
- H01Q5/45—Imbricated or interleaved structures; Combined or electromagnetically coupled arrangements, e.g. comprising two or more non-connected fed radiating elements using two or more feeds in association with a common reflecting, diffracting or refracting device
Landscapes
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Computer Networks & Wireless Communication (AREA)
- General Physics & Mathematics (AREA)
- Waveguide Aerials (AREA)
- Aerials With Secondary Devices (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
1355030 Aerials HUGHES AIRCRAFT CO 11 April 1973 [14 April 1972] 17385/73 Heading H4A An aerial feed system operative simultaneously in first, second and third increasingly higher frequency bands comprises a horn defining a common radiating aperture for signals within the second and third bands, the latter signals being multimoded by means coupled to the horn. Two arms extend outwardly in opposite directions from the periphery of the horn and, in conjunction with the horn, are resonant within the first frequency band. The arms are fed at their ends nearest the horn, which is surrounded by a cavity also resonant within the first frequency band. As described, the first, second, and third frequency bands are respectively of the orders of 1, 4 and 6 GHz. A square crosssection horn 10 provides a common aperture for the 4 and 6 GHz signals, which are fed to it via a multi-mode step section 14. A 4 GHz choke section 16 surrounds the said aperture, and a dielectric material disc 18 extends radially outwards from the lip thereof, and is supported at its outer periphery by posts 24, which are mounted on a ground plane 12. Dipole arms 20 to 23 extend outwards on the disc 18 from the centres of the sides of the horn 10, and are formed with 4 GHz choke sections. Coaxial feed lines 30 to 33 operating in the 1 GHz band extend from connectors 34 to 37 alongside the horn 10, their centre conductors being connected to respective ones of the dipole arms 20 to 23, and their outer conductors being connected to the outer periphery of the choke section 16 and to the ground plane 12. A 1 GHz resonant cavity is formed by metal bands 26, 28 around the posts 24, and by the ground plane 12. Lastly, a metal cylinder 40 terminating in a flange 42 is disposed outside the posts 24. A cover which is transparent to radiation may be supported on the flange 42. The arrangement provides two crossed dipoles operating in the first (1 GHz) frequency band each comprising two outer arms and a central portion utilizing the periphery of the higher frequency horn (Fig. 7, not shown). The two feeders of a dipole may be connected to respective ports of a 180 degree four-port hybrid to provide sum and difference outputs, for monopulse applications (Fig. 8, not shown). In another mode of operation, the crossed dipoles may be fed in phase quadrature, to provide circularly polarized radiation. It is stated that the feed patterns of the system are nearly identical for each of the three frequency bands (Figs. 3, 4, 5, not shown). A second embodiment is generally similar to the first embodiment, but the horn is surrounded with a double choke section (Fig. 9, not shown). In a third embodiment a circular cross-section horn, having a double choke section, is used (Fig. 10, not shown). In fourth and fifth embodiments, square cross-section horns are used, but are provided with re-entrant portions located, respectively, at the corners and at the centres of the sides of the square (Figs. 11, 12, not shown). The dipole arms extend outwardly from these reentrant portions, and are thus diagonally located in the fourth embodiment.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US00244158A US3803617A (en) | 1972-04-14 | 1972-04-14 | High efficiency multifrequency feed |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1355030A true GB1355030A (en) | 1974-06-05 |
Family
ID=22921594
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1738573A Expired GB1355030A (en) | 1972-04-14 | 1973-04-11 | Antenna feed system |
Country Status (8)
Country | Link |
---|---|
US (1) | US3803617A (en) |
JP (1) | JPS5224369B2 (en) |
BR (1) | BR7302624D0 (en) |
CA (1) | CA977047A (en) |
DE (1) | DE2316842C3 (en) |
FR (1) | FR2180114B1 (en) |
GB (1) | GB1355030A (en) |
IT (1) | IT988143B (en) |
Families Citing this family (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1555307A (en) * | 1975-06-17 | 1979-11-07 | Marconi Co Ltd | Dipole radiotors |
US4028708A (en) * | 1975-10-10 | 1977-06-07 | The United States Of America As Represented By The Secretary Of The Navy | Antenna feed for dual beam conical scan tracking radar |
FR2391570A1 (en) * | 1977-05-18 | 1978-12-15 | Thomson Csf | DEVICE FOR CORRECTING THE RADIATION OF MULTI-FREQUENCY AIRCRAFT AND AERIALS INCLUDING SUCH A DEVICE |
JPS5816602Y2 (en) * | 1978-03-16 | 1983-04-04 | シャープ株式会社 | air conditioner |
FR2442519A1 (en) * | 1978-11-24 | 1980-06-20 | Thomson Csf | PRINTED MONOPULSE PRIMER SOURCE FOR AIRPORT RADAR ANTENNA AND ANTENNA COMPRISING SUCH A SOURCE |
US4675685A (en) * | 1984-04-17 | 1987-06-23 | Harris Corporation | Low VSWR, flush-mounted, adaptive array antenna |
US5003321A (en) * | 1985-09-09 | 1991-03-26 | Sts Enterprises, Inc. | Dual frequency feed |
DE3544092A1 (en) * | 1985-12-13 | 1987-06-19 | Licentia Gmbh | Multi-band antenna for the GHz band |
US4740795A (en) * | 1986-05-28 | 1988-04-26 | Seavey Engineering Associates, Inc. | Dual frequency antenna feeding with coincident phase centers |
US4843399B1 (en) * | 1986-07-30 | 1994-04-05 | Narco Avionics Inc | Portable navigational communications transceiver |
US5041840A (en) * | 1987-04-13 | 1991-08-20 | Frank Cipolla | Multiple frequency antenna feed |
US5255003B1 (en) * | 1987-10-02 | 1995-05-16 | Antenna Downlink Inc | Multiple-frequency microwave feed assembly |
US4862187A (en) * | 1988-10-24 | 1989-08-29 | Microwave Components And Systems, Inc. | Dual band feedhorn with two different dipole sets |
US5038151A (en) * | 1989-07-31 | 1991-08-06 | Loral Aerospace Corp. | Simultaneous transmit and receive antenna |
DE19608622A1 (en) * | 1996-03-06 | 1997-09-11 | Sel Alcatel Ag | Aerial system with two aerials |
US5990838A (en) * | 1996-06-12 | 1999-11-23 | 3Com Corporation | Dual orthogonal monopole antenna system |
US6121939A (en) * | 1996-11-15 | 2000-09-19 | Yagi Antenna Co., Ltd. | Multibeam antenna |
FR2773271B1 (en) * | 1997-12-31 | 2000-02-25 | Thomson Multimedia Sa | ELECTROMAGNETIC WAVE TRANSMITTER / RECEIVER |
US6297782B1 (en) * | 2000-07-26 | 2001-10-02 | Gabriel Electronics Incorporated | Modular hub array antenna |
CN103700924B (en) * | 2013-12-05 | 2015-07-15 | 清华大学 | Circularly polarized angle diversity antenna |
CN107946746B (en) * | 2017-10-16 | 2019-11-22 | 西安雷通科技有限责任公司 | UHF/S dual-frequency range satellite communication and wireless communication system |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3205499A (en) * | 1956-08-30 | 1965-09-07 | Avco Mfg Corp | Dual polarized horn antenna |
US3325817A (en) * | 1964-06-01 | 1967-06-13 | Hughes Aircraft Co | Dual frequency horn antenna |
-
1972
- 1972-04-14 US US00244158A patent/US3803617A/en not_active Expired - Lifetime
-
1973
- 1973-04-03 CA CA167,786A patent/CA977047A/en not_active Expired
- 1973-04-04 DE DE2316842A patent/DE2316842C3/en not_active Expired
- 1973-04-11 GB GB1738573A patent/GB1355030A/en not_active Expired
- 1973-04-11 BR BR732624A patent/BR7302624D0/en unknown
- 1973-04-13 JP JP48041489A patent/JPS5224369B2/ja not_active Expired
- 1973-04-13 IT IT49428/73A patent/IT988143B/en active
- 1973-04-13 FR FR7313570A patent/FR2180114B1/fr not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS4921045A (en) | 1974-02-25 |
IT988143B (en) | 1975-04-10 |
DE2316842A1 (en) | 1973-10-18 |
FR2180114B1 (en) | 1977-02-04 |
DE2316842B2 (en) | 1978-05-24 |
DE2316842C3 (en) | 1979-01-18 |
BR7302624D0 (en) | 1974-07-11 |
CA977047A (en) | 1975-10-28 |
US3803617A (en) | 1974-04-09 |
JPS5224369B2 (en) | 1977-06-30 |
FR2180114A1 (en) | 1973-11-23 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PCNP | Patent ceased through non-payment of renewal fee |