FR2234671B1 - - Google Patents
Info
- Publication number
- FR2234671B1 FR2234671B1 FR7411382A FR7411382A FR2234671B1 FR 2234671 B1 FR2234671 B1 FR 2234671B1 FR 7411382 A FR7411382 A FR 7411382A FR 7411382 A FR7411382 A FR 7411382A FR 2234671 B1 FR2234671 B1 FR 2234671B1
- Authority
- FR
- France
- 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
- H01Q21/00—Antenna arrays or systems
- H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
- H01Q21/061—Two dimensional planar arrays
- H01Q21/062—Two dimensional planar arrays using dipole aerials
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
- H01Q15/14—Reflecting surfaces; Equivalent structures
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Aerials With Secondary Devices (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US00373203A US3836977A (en) | 1973-06-25 | 1973-06-25 | Antenna system having a reflector with a substantially open construction |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2234671A1 FR2234671A1 (en) | 1975-01-17 |
FR2234671B1 true FR2234671B1 (en) | 1980-03-14 |
Family
ID=23471414
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7411382A Expired FR2234671B1 (en) | 1973-06-25 | 1974-03-29 |
Country Status (15)
Country | Link |
---|---|
US (1) | US3836977A (en) |
JP (2) | JPS591001B2 (en) |
BR (1) | BR7404532D0 (en) |
CA (1) | CA1011452A (en) |
CS (1) | CS191234B2 (en) |
DD (1) | DD112551A5 (en) |
DE (1) | DE2427505C2 (en) |
FR (1) | FR2234671B1 (en) |
GB (1) | GB1393081A (en) |
IL (1) | IL44559A (en) |
IT (1) | IT1010296B (en) |
NL (1) | NL183113C (en) |
PL (1) | PL90789B1 (en) |
SE (1) | SE389769B (en) |
SU (1) | SU814289A3 (en) |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3836977A (en) * | 1973-06-25 | 1974-09-17 | Hazeltine Corp | Antenna system having a reflector with a substantially open construction |
US4186400A (en) * | 1978-06-01 | 1980-01-29 | Grumman Aerospace Corporation | Aircraft scanning antenna system with inter-element isolators |
DE3224545A1 (en) * | 1982-07-01 | 1984-01-05 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | GROUP ANTENNA |
GB2135829B (en) * | 1983-02-24 | 1986-04-09 | Cossor Electronics Ltd | An antenna with a reflector of open construction |
JPS60111503A (en) * | 1983-11-21 | 1985-06-18 | Nippon Telegr & Teleph Corp <Ntt> | Array antenna device |
JPS60184309U (en) * | 1984-05-17 | 1985-12-06 | 三菱電機株式会社 | horn antenna |
JPS60184308U (en) * | 1984-05-17 | 1985-12-06 | 三菱電機株式会社 | horn antenna |
DE4218544A1 (en) * | 1992-06-05 | 1993-12-16 | Abb Patent Gmbh | Shortwave transmitter antenna |
US5285212A (en) * | 1992-09-18 | 1994-02-08 | Radiation Systems, Inc. | Self-supporting columnar antenna array |
US5606333A (en) * | 1995-02-17 | 1997-02-25 | Hazeltine Corporation | Low wind resistance antennas using cylindrical radiating and reflector units |
US5757246A (en) * | 1995-02-27 | 1998-05-26 | Ems Technologies, Inc. | Method and apparatus for suppressing passive intermodulation |
US5966102A (en) * | 1995-12-14 | 1999-10-12 | Ems Technologies, Inc. | Dual polarized array antenna with central polarization control |
SE511079C2 (en) * | 1996-04-29 | 1999-08-02 | Radio Design Innovation Tj Ab | Modular antenna system with a closed ring of antenna panels |
KR100264817B1 (en) * | 1998-06-09 | 2000-09-01 | 박태진 | Wideband microstrip dipole antenna array |
US8121821B1 (en) | 2007-12-19 | 2012-02-21 | The United States Of America As Represented By The Secretary Of The Navy | Quasi-static design approach for low Q factor electrically small antennas |
US8368156B1 (en) | 2007-12-19 | 2013-02-05 | The United States Of America As Represented By The Secretary Of The Navy | Dipole moment term for an electrically small antenna |
US9281083B2 (en) | 2009-04-06 | 2016-03-08 | Terrapower, Llc | Traveling wave nuclear fission reactor, fuel assembly, and method of controlling burnup therein |
JP6941494B2 (en) * | 2017-07-18 | 2021-09-29 | 日本放送協会 | End-to-end Japanese speech recognition model learning device and program |
CN111507104B (en) | 2020-03-19 | 2022-03-25 | 北京百度网讯科技有限公司 | Method and device for establishing label labeling model, electronic equipment and readable storage medium |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE480201C (en) * | 1924-08-04 | 1929-07-30 | Walter Hahnemann | Device for clearly directed sending and receiving by means of electrical waves |
BE335661A (en) * | 1925-07-06 | |||
FR704953A (en) * | 1930-01-24 | 1931-05-29 | Radio Ind | Wave projector |
US2115789A (en) * | 1935-06-04 | 1938-05-03 | Telefunken Gmbh | Directional antenna system |
NL46871C (en) * | 1936-01-14 | |||
FR837998A (en) * | 1937-05-15 | 1939-02-23 | Lorenz C Ag | Antenna device |
US2558727A (en) * | 1942-07-01 | 1951-07-03 | Edwin J Bernet | Antenna |
US3836977A (en) * | 1973-06-25 | 1974-09-17 | Hazeltine Corp | Antenna system having a reflector with a substantially open construction |
-
1973
- 1973-06-25 US US00373203A patent/US3836977A/en not_active Expired - Lifetime
-
1974
- 1974-02-18 CA CA192,725A patent/CA1011452A/en not_active Expired
- 1974-02-21 GB GB784774A patent/GB1393081A/en not_active Expired
- 1974-03-06 SE SE7403002A patent/SE389769B/en not_active IP Right Cessation
- 1974-03-29 FR FR7411382A patent/FR2234671B1/fr not_active Expired
- 1974-04-03 IL IL44559A patent/IL44559A/en unknown
- 1974-04-20 JP JP49045020A patent/JPS591001B2/en not_active Expired
- 1974-04-30 IT IT7422142A patent/IT1010296B/en active
- 1974-05-31 BR BR4532/74A patent/BR7404532D0/en unknown
- 1974-06-07 DE DE2427505A patent/DE2427505C2/en not_active Expired
- 1974-06-21 DD DD179369A patent/DD112551A5/en unknown
- 1974-06-22 PL PL1974172119A patent/PL90789B1/pl unknown
- 1974-06-24 SU SU742037857A patent/SU814289A3/en active
- 1974-06-24 CS CS744437A patent/CS191234B2/en unknown
- 1974-06-25 NL NLAANVRAGE7408568,A patent/NL183113C/en not_active IP Right Cessation
- 1974-09-25 JP JP49110388A patent/JPS63967B2/ja not_active Expired
Also Published As
Publication number | Publication date |
---|---|
IL44559A0 (en) | 1974-06-30 |
PL90789B1 (en) | 1977-01-31 |
JPS50137655A (en) | 1975-10-31 |
IL44559A (en) | 1976-09-30 |
SE7403002L (en) | 1974-12-27 |
AU6580674A (en) | 1975-08-21 |
NL183113C (en) | 1988-07-18 |
BR7404532D0 (en) | 1975-01-21 |
DE2427505C2 (en) | 1985-08-01 |
FR2234671A1 (en) | 1975-01-17 |
CA1011452A (en) | 1977-05-31 |
NL183113B (en) | 1988-02-16 |
JPS5034141A (en) | 1975-04-02 |
GB1393081A (en) | 1975-05-07 |
NL7408568A (en) | 1974-12-30 |
JPS591001B2 (en) | 1984-01-10 |
DD112551A5 (en) | 1975-04-12 |
US3836977A (en) | 1974-09-17 |
DE2427505A1 (en) | 1975-01-16 |
JPS63967B2 (en) | 1988-01-09 |
SU814289A3 (en) | 1981-03-15 |
IT1010296B (en) | 1977-01-10 |
SE389769B (en) | 1976-11-15 |
CS191234B2 (en) | 1979-06-29 |
Similar Documents
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |