FR898352A - Improvements to simultaneous or alternative production systems for two directed radiations - Google Patents
Improvements to simultaneous or alternative production systems for two directed radiationsInfo
- Publication number
- FR898352A FR898352A FR898352DA FR898352A FR 898352 A FR898352 A FR 898352A FR 898352D A FR898352D A FR 898352DA FR 898352 A FR898352 A FR 898352A
- Authority
- FR
- France
- Prior art keywords
- simultaneous
- production systems
- alternative production
- directed radiations
- radiations
- 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
- H01Q25/04—Multimode antennas
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE898352X | 1942-06-24 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR898352A true FR898352A (en) | 1945-04-20 |
Family
ID=6849132
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR898352D Expired FR898352A (en) | 1942-06-24 | 1943-09-29 | Improvements to simultaneous or alternative production systems for two directed radiations |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR898352A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2997711A (en) * | 1959-05-22 | 1961-08-22 | Wiley Electronics Company | Spherical reflector and composite illuminator |
US3195137A (en) * | 1960-12-27 | 1965-07-13 | Bell Telephone Labor Inc | Cassegrainian antenna with aperture blocking correction |
DE1227088B (en) * | 1957-12-17 | 1966-10-20 | Telefunken Patent | Directional antenna arrangement for minimum bearing |
US3500419A (en) * | 1966-09-09 | 1970-03-10 | Technical Appliance Corp | Dual frequency,dual polarized cassegrain antenna |
US3508277A (en) * | 1966-05-27 | 1970-04-21 | Int Standard Electric Corp | Coaxial horns with cross-polarized feeds of different frequencies |
US3665481A (en) * | 1970-05-12 | 1972-05-23 | Nasa | Multi-purpose antenna employing dish reflector with plural coaxial horn feeds |
-
1943
- 1943-09-29 FR FR898352D patent/FR898352A/en not_active Expired
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1227088B (en) * | 1957-12-17 | 1966-10-20 | Telefunken Patent | Directional antenna arrangement for minimum bearing |
US2997711A (en) * | 1959-05-22 | 1961-08-22 | Wiley Electronics Company | Spherical reflector and composite illuminator |
US3195137A (en) * | 1960-12-27 | 1965-07-13 | Bell Telephone Labor Inc | Cassegrainian antenna with aperture blocking correction |
US3508277A (en) * | 1966-05-27 | 1970-04-21 | Int Standard Electric Corp | Coaxial horns with cross-polarized feeds of different frequencies |
US3500419A (en) * | 1966-09-09 | 1970-03-10 | Technical Appliance Corp | Dual frequency,dual polarized cassegrain antenna |
US3665481A (en) * | 1970-05-12 | 1972-05-23 | Nasa | Multi-purpose antenna employing dish reflector with plural coaxial horn feeds |
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