NL230802A - - Google Patents
Info
- Publication number
- NL230802A NL230802A NL230802DA NL230802A NL 230802 A NL230802 A NL 230802A NL 230802D A NL230802D A NL 230802DA NL 230802 A NL230802 A NL 230802A
- Authority
- NL
- Netherlands
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
- H01Q25/007—Antennas or antenna systems providing at least two radiating patterns using two or more primary active elements in the focal region of a focusing device
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/32—Non-reciprocal transmission devices
- H01P1/38—Circulators
-
- 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
- H01Q19/17—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 comprising two or more radiating elements
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US684026A US2956276A (en) | 1957-09-16 | 1957-09-16 | Diversity system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL230802A true NL230802A (en:Method) |
Family
ID=24746420
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL230802D NL230802A (en:Method) | 1957-09-16 | ||
| NL113271D NL113271C (en:Method) | 1957-09-16 |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL113271D NL113271C (en:Method) | 1957-09-16 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US2956276A (en:Method) |
| BE (1) | BE571122A (en:Method) |
| DE (1) | DE1226667B (en:Method) |
| FR (1) | FR1210219A (en:Method) |
| GB (1) | GB890296A (en:Method) |
| NL (2) | NL113271C (en:Method) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3144647A (en) * | 1959-12-01 | 1964-08-11 | Itt | Diversity system |
| US3209260A (en) * | 1961-03-16 | 1965-09-28 | Itt | Beyond-the-horizon communication system for air vehicles |
| DE1273016B (de) * | 1961-11-16 | 1968-07-18 | Telefunken Patent | Mehrkanalige Scattering-UEbertragungsanlage fuer Zweifach-Raumdiversity |
| DE3336610A1 (de) * | 1983-10-07 | 1985-04-25 | Hörmann GmbH, 8011 Kirchseeon | Mikrowellenschranke |
| HU191949B (en) * | 1984-09-10 | 1987-04-28 | Tavkoezlesi Kutato Intezet | Method and equipment for the transmission of information by means of open-air propagation with electromagnetic waves of directed beam of rays, of wave length below 10 mm |
| US7784358B2 (en) * | 2004-11-12 | 2010-08-31 | Vfs Technologies Limited | Flow metering device for a plurality of fluid carriers |
| US7623084B2 (en) * | 2006-09-12 | 2009-11-24 | General Dynamics C4 Systems, Inc. | Angular diversity antenna system and feed assembly for same |
| CN106654574B (zh) * | 2015-10-29 | 2019-08-06 | 建汉科技股份有限公司 | 一种天线装置与系统 |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1667792A (en) * | 1923-01-11 | 1928-05-01 | American Telephone & Telegraph | Radio signaling system |
| US2312093A (en) * | 1938-11-23 | 1943-02-23 | Rca Corp | Radiant energy signaling system |
| BE459653A (en:Method) * | 1944-05-24 | |||
| US2585173A (en) * | 1948-07-01 | 1952-02-12 | Raytheon Mfg Co | Radio-frequency transmission line circuit |
| US2627020A (en) * | 1949-05-28 | 1953-01-27 | William S Parnell | Two-feed "x" band antenna |
| US2803817A (en) * | 1952-08-18 | 1957-08-20 | Francis A Marasco | Radar antenna lobing power-divider |
-
0
- NL NL230802D patent/NL230802A/xx unknown
- BE BE571122D patent/BE571122A/xx unknown
- NL NL113271D patent/NL113271C/xx active
-
1957
- 1957-09-16 US US684026A patent/US2956276A/en not_active Expired - Lifetime
-
1958
- 1958-08-26 GB GB27340/58A patent/GB890296A/en not_active Expired
- 1958-09-10 DE DEW24066A patent/DE1226667B/de active Pending
- 1958-09-10 FR FR1210219D patent/FR1210219A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB890296A (en) | 1962-02-28 |
| FR1210219A (fr) | 1960-03-07 |
| NL113271C (en:Method) | |
| BE571122A (en:Method) | |
| DE1226667B (de) | 1966-10-13 |
| US2956276A (en) | 1960-10-11 |