FR1107577A - Improvements to directional antenna systems - Google Patents
Improvements to directional antenna systemsInfo
- Publication number
- FR1107577A FR1107577A FR1107577DA FR1107577A FR 1107577 A FR1107577 A FR 1107577A FR 1107577D A FR1107577D A FR 1107577DA FR 1107577 A FR1107577 A FR 1107577A
- Authority
- FR
- France
- Prior art keywords
- directional antenna
- antenna systems
- systems
- directional
- antenna
- 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
- H01Q11/00—Electrically-long antennas having dimensions more than twice the shortest operating wavelength and consisting of conductive active radiating elements
- H01Q11/02—Non-resonant antennas, e.g. travelling-wave antenna
- H01Q11/08—Helical antennas
-
- 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
- H01Q19/15—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 line source, e.g. leaky waveguide antennas
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1678553A GB741897A (en) | 1953-06-17 | 1953-06-17 | Improvements in or relating to directional aerial systems |
Publications (1)
Publication Number | Publication Date |
---|---|
FR1107577A true FR1107577A (en) | 1956-01-03 |
Family
ID=10083608
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR1107577D Expired FR1107577A (en) | 1953-06-17 | 1954-06-17 | Improvements to directional antenna systems |
Country Status (4)
Country | Link |
---|---|
DE (1) | DE1001353B (en) |
ES (1) | ES215856A1 (en) |
FR (1) | FR1107577A (en) |
GB (1) | GB741897A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2034170A1 (en) * | 1969-02-17 | 1970-12-11 | Thomson Csf | |
FR2061510A1 (en) * | 1969-02-28 | 1971-06-25 | Thomson Csf |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2919442A (en) * | 1955-12-09 | 1959-12-29 | American Electronics | Antenna |
DE1048962B (en) * | 1957-09-20 | 1959-01-22 | Siemens Ag | Directional antenna for very short electromagnetic waves |
NL251575A (en) * | 1959-05-11 | 1964-02-25 | ||
CH391803A (en) * | 1961-10-06 | 1965-05-15 | Patelhold Patentverwertung | Axially backward radiating helical antenna |
US4014028A (en) * | 1975-08-11 | 1977-03-22 | Trw Inc. | Backfire bifilar helical antenna |
CA1257694A (en) * | 1985-08-05 | 1989-07-18 | Hisamatsu Nakano | Antenna system |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE812444C (en) * | 1950-03-11 | 1951-08-30 | Karl-Otto Dr-Ing Schmidt | Coil antenna for advancing circularly polarized waves |
-
1953
- 1953-06-17 GB GB1678553A patent/GB741897A/en not_active Expired
-
1954
- 1954-06-09 ES ES0215856A patent/ES215856A1/en not_active Expired
- 1954-06-17 FR FR1107577D patent/FR1107577A/en not_active Expired
- 1954-06-18 DE DEM23445A patent/DE1001353B/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2034170A1 (en) * | 1969-02-17 | 1970-12-11 | Thomson Csf | |
FR2061510A1 (en) * | 1969-02-28 | 1971-06-25 | Thomson Csf |
Also Published As
Publication number | Publication date |
---|---|
GB741897A (en) | 1955-12-14 |
ES215856A1 (en) | 1955-08-01 |
DE1001353B (en) | 1957-01-24 |
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