FR738872A - Perfectionnements aux systèmes d'antennes - Google Patents
Perfectionnements aux systèmes d'antennesInfo
- Publication number
- FR738872A FR738872A FR738872DA FR738872A FR 738872 A FR738872 A FR 738872A FR 738872D A FR738872D A FR 738872DA FR 738872 A FR738872 A FR 738872A
- Authority
- FR
- France
- Prior art keywords
- antenna systems
- antenna
- systems
- 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
- 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
- H01Q19/12—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 wherein the surfaces are concave
- H01Q19/13—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 wherein the surfaces are concave the primary radiating source being a single radiating element, e.g. a dipole, a slot, a waveguide termination
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB25563/31A GB389142A (en) | 1931-09-11 | 1931-09-11 | Improvements in or relating to aerial systems |
Publications (1)
Publication Number | Publication Date |
---|---|
FR738872A true FR738872A (fr) | 1932-12-30 |
Family
ID=10229706
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR738872D Expired FR738872A (fr) | 1931-09-11 | 1932-06-21 | Perfectionnements aux systèmes d'antennes |
Country Status (4)
Country | Link |
---|---|
US (1) | US2049070A (fr) |
DE (1) | DE588513C (fr) |
FR (1) | FR738872A (fr) |
GB (1) | GB389142A (fr) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2521524A (en) * | 1945-04-27 | 1950-09-05 | Bell Telephone Labor Inc | Directional antenna system |
US2604595A (en) * | 1945-09-25 | 1952-07-22 | Standard Telephones Cables Ltd | Antenna reflector |
US2598475A (en) * | 1945-12-17 | 1952-05-27 | Raytheon Mfg Co | Antenna system |
US2603749A (en) * | 1946-04-08 | 1952-07-15 | Bell Telephone Labor Inc | Directive antenna system |
US2572430A (en) * | 1946-05-17 | 1951-10-23 | Breeze Corp | Antenna structure |
US2922161A (en) * | 1954-11-17 | 1960-01-19 | Raytheon Co | Antenna reflectors |
US2989746A (en) * | 1956-08-21 | 1961-06-20 | Marconi Wireless Telegraph Co | Scanning antenna system utilizing polarization filters |
US3218645A (en) * | 1958-03-06 | 1965-11-16 | Hermann W Ehrenspeck | Endfire array having vertically and horizontally spaced parasitic arrays |
US3271552A (en) * | 1963-02-01 | 1966-09-06 | Litton Prec Products Inc | Microwave heating apparatus |
US3329960A (en) * | 1964-10-01 | 1967-07-04 | Winegard Co | Collapsible parabolic antenna |
US3483563A (en) * | 1965-10-13 | 1969-12-09 | Collins Radio Co | Combination vertically-horizontally polarized paracylinder antennas |
US4348677A (en) * | 1979-06-25 | 1982-09-07 | General Dynamics, Pomona Division | Common aperture dual mode seeker antenna |
US4295143A (en) * | 1980-02-15 | 1981-10-13 | Winegard Company | Low wind load modified farabolic antenna |
-
1931
- 1931-09-11 GB GB25563/31A patent/GB389142A/en not_active Expired
-
1932
- 1932-06-21 FR FR738872D patent/FR738872A/fr not_active Expired
- 1932-08-25 DE DEM120843D patent/DE588513C/de not_active Expired
- 1932-09-10 US US632574A patent/US2049070A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
GB389142A (en) | 1933-03-13 |
DE588513C (de) | 1933-11-18 |
US2049070A (en) | 1936-07-28 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
FR812253A (fr) | Perfectionnements aux systèmes d'antennes | |
FR738872A (fr) | Perfectionnements aux systèmes d'antennes | |
FR788337A (fr) | Perfectionnements aux systèmes d'antennes | |
FR42283E (fr) | Perfectionnements aux systèmes d'asservissement électriques | |
FR768779A (fr) | Perfectionnements aux systèmes d'antennes dirigées | |
FR745925A (fr) | Perfectionnements aux systèmes radiogoniométriques | |
FR750607A (fr) | Perfectionnements aux systèmes de télévision | |
FR726873A (fr) | Perfectionnements aux systèmes téléphoniques | |
FR806782A (fr) | Perfectionnements aux systèmes d'antennes | |
FR733139A (fr) | Perfectionnements aux systèmes téléphoniques | |
FR739733A (fr) | Perfectionnements aux systèmes amplificateurs | |
FR705727A (fr) | Perfectionnements aux systèmes d'antennes radioélectriques | |
FR728543A (fr) | Perfectionnements aux systèmes de fermetures | |
FR701589A (fr) | Perfectionnements aux systèmes d'antennes dirigées | |
FR738571A (fr) | Perfectionnements aux parapluies | |
FR752268A (fr) | Perfectionnements aux systèmes de télévision | |
FR761926A (fr) | Perfectionnements aux systèmes téléphoniques | |
FR723847A (fr) | Perfectionnements aux systèmes de réfrigération | |
FR688063A (fr) | Perfectionnements aux systèmes d'antennes | |
FR779152A (fr) | Perfectionnements aux systèmes d'antennes directives | |
FR663806A (fr) | Perfectionnements aux systèmes d'antennes radiotélégraphiques | |
FR715612A (fr) | Perfectionnements aux systèmes d'interrupteurs | |
FR668674A (fr) | Perfectionnements aux systèmes d'antennes | |
FR748057A (fr) | Perfectionnements aux systèmes évaporatoires | |
FR724352A (fr) | Perfectionnements aux systèmes téléphoniques |