BE712495A - - Google Patents
Info
- Publication number
- BE712495A BE712495A BE712495DA BE712495A BE 712495 A BE712495 A BE 712495A BE 712495D A BE712495D A BE 712495DA BE 712495 A BE712495 A BE 712495A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/28—Combinations of substantially independent non-interacting antenna units or systems
-
- 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
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL6704219A NL6704219A (enrdf_load_stackoverflow) | 1967-03-22 | 1967-03-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE712495A true BE712495A (enrdf_load_stackoverflow) | 1968-07-31 |
Family
ID=19799640
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE712495D BE712495A (enrdf_load_stackoverflow) | 1967-03-22 | 1968-03-20 |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US3550135A (enrdf_load_stackoverflow) |
| BE (1) | BE712495A (enrdf_load_stackoverflow) |
| CH (1) | CH473488A (enrdf_load_stackoverflow) |
| DE (1) | DE1766002B1 (enrdf_load_stackoverflow) |
| FR (1) | FR1556858A (enrdf_load_stackoverflow) |
| GB (1) | GB1182724A (enrdf_load_stackoverflow) |
| NL (1) | NL6704219A (enrdf_load_stackoverflow) |
| NO (1) | NO127476B (enrdf_load_stackoverflow) |
| SE (1) | SE323725B (enrdf_load_stackoverflow) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3680143A (en) * | 1970-07-01 | 1972-07-25 | Hughes Aircraft Co | Shaped beam antenna |
| FR2177564B1 (enrdf_load_stackoverflow) * | 1972-03-29 | 1974-08-02 | Nathan Guy | |
| US4097868A (en) * | 1976-12-06 | 1978-06-27 | The United States Of America As Represented By The Secretary Of The Army | Antenna for combined surveillance and foliage penetration radar |
| US4095230A (en) * | 1977-06-06 | 1978-06-13 | General Dynamics Corporation | High accuracy broadband antenna system |
| FR2445629A1 (fr) * | 1978-12-27 | 1980-07-25 | Thomson Csf | Antenne commune pour radar primaire et radar secondaire |
| FR2474770A2 (fr) * | 1978-12-27 | 1981-07-31 | Thomson Csf | Antenne commune pour radar primaire et radar secondaire |
| IT1166889B (it) * | 1979-06-14 | 1987-05-06 | Contraves Italiana Spa | Disposizione d'antenne integrate per apparecchiature radar che permette la contemporanea generazione di due o piu' diagrammi d'irradiazione uno diverso dall'altro |
| DE3170227D1 (en) * | 1980-01-28 | 1985-06-05 | Thomson Csf | Common antenna for primary radar and secondary radar |
| DE9014875U1 (de) * | 1990-10-27 | 1991-01-10 | Kabelmetal Electro Gmbh, 30179 Hannover | Antenne mit einem parabolischen Reflektor |
| US5187491A (en) * | 1991-01-29 | 1993-02-16 | Raytheon Company | Low sidelobes antenna |
| FR2691581B1 (fr) * | 1992-05-19 | 1994-08-26 | Thomson Csf | Antenne hyperfréquence à faibles coût et encombrement pour système émetteur et/ou récepteur de véhicule. |
| US5835057A (en) * | 1996-01-26 | 1998-11-10 | Kvh Industries, Inc. | Mobile satellite communication system including a dual-frequency, low-profile, self-steering antenna assembly |
| DE19859120C1 (de) * | 1998-12-21 | 2000-03-23 | Howaldtswerke Deutsche Werft | Antennenanordnung |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2653238A (en) * | 1945-10-26 | 1953-09-22 | Kenneth T Bainbridge | Dual frequency antenna |
| US2895127A (en) * | 1954-07-20 | 1959-07-14 | Rca Corp | Directive diplex antenna |
| US2846678A (en) * | 1955-06-09 | 1958-08-05 | Sanders Associates Inc | Dual frequency antenna |
| US3164835A (en) * | 1962-06-07 | 1965-01-05 | Bell Telephone Labor Inc | Alignment of microwave antenna |
| US3245081A (en) * | 1963-02-08 | 1966-04-05 | Hughes Aircraft Co | Multiple feed wide angle antenna utilizing biconcave spherical delay lens |
| US3276022A (en) * | 1964-05-13 | 1966-09-27 | Aeronca Mfg Corp | Dual frequency gregorian-newtonian antenna system with newtonian feed located at common focus of parabolic main dish and ellipsoidal sub-dish |
| US3445850A (en) * | 1965-11-08 | 1969-05-20 | Canoga Electronics Corp | Dual frequency antenna employing parabolic reflector |
-
1967
- 1967-03-22 NL NL6704219A patent/NL6704219A/xx unknown
-
1968
- 1968-03-15 GB GB02725/68A patent/GB1182724A/en not_active Expired
- 1968-03-18 CH CH395668A patent/CH473488A/de not_active IP Right Cessation
- 1968-03-20 BE BE712495D patent/BE712495A/xx not_active IP Right Cessation
- 1968-03-20 NO NO01083/68A patent/NO127476B/no unknown
- 1968-03-20 SE SE3692/68A patent/SE323725B/xx unknown
- 1968-03-20 DE DE19681766002 patent/DE1766002B1/de active Pending
- 1968-03-21 US US714973A patent/US3550135A/en not_active Expired - Lifetime
- 1968-03-21 FR FR1556858D patent/FR1556858A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB1182724A (en) | 1970-03-04 |
| FR1556858A (enrdf_load_stackoverflow) | 1969-02-07 |
| NO127476B (enrdf_load_stackoverflow) | 1973-06-25 |
| NL6704219A (enrdf_load_stackoverflow) | 1968-09-23 |
| DE1766002B1 (de) | 1971-03-04 |
| US3550135A (en) | 1970-12-22 |
| CH473488A (de) | 1969-05-31 |
| SE323725B (enrdf_load_stackoverflow) | 1970-05-11 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| RE20 | Patent expired |
Owner name: N.V. HOLLANDSE SIGNAALAPPARATEN Effective date: 19880320 |