IT7849377A0 - Dispositivo di correzione dell'irra diamento delle antenne multifrequenze ed antenne comportanti un tale dispositivo - Google Patents
Dispositivo di correzione dell'irra diamento delle antenne multifrequenze ed antenne comportanti un tale dispositivoInfo
- Publication number
- IT7849377A0 IT7849377A0 IT7849377A IT4937778A IT7849377A0 IT 7849377 A0 IT7849377 A0 IT 7849377A0 IT 7849377 A IT7849377 A IT 7849377A IT 4937778 A IT4937778 A IT 4937778A IT 7849377 A0 IT7849377 A0 IT 7849377A0
- Authority
- IT
- Italy
- Prior art keywords
- antennas
- irradiance
- correcting
- frequency
- frequency antennas
- Prior art date
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
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/40—Imbricated or interleaved structures; Combined or electromagnetically coupled arrangements, e.g. comprising two or more non-connected fed radiating elements
- H01Q5/45—Imbricated or interleaved structures; Combined or electromagnetically coupled arrangements, e.g. comprising two or more non-connected fed radiating elements using two or more feeds in association with a common reflecting, diffracting or refracting device
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Aerials With Secondary Devices (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7715305A FR2391570A1 (fr) | 1977-05-18 | 1977-05-18 | Dispositif de correction du rayonnement des aeriens multifrequences et aeriens comportant un tel dispositif |
Publications (2)
Publication Number | Publication Date |
---|---|
IT7849377A0 true IT7849377A0 (it) | 1978-05-16 |
IT1102673B IT1102673B (it) | 1985-10-07 |
Family
ID=9191017
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT7849377A IT1102673B (it) | 1977-05-18 | 1978-05-16 | Dispositivo di correzione dell'irra diamento delle antenne multifrequenze ed antenne comportanti un tale dispositivo |
Country Status (6)
Country | Link |
---|---|
US (1) | US4207573A (it) |
DE (1) | DE2821699C2 (it) |
FR (1) | FR2391570A1 (it) |
GB (1) | GB1588068A (it) |
IT (1) | IT1102673B (it) |
NL (1) | NL180967C (it) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57125864A (en) * | 1981-01-29 | 1982-08-05 | Toshiba Corp | Antenna device |
DE3608413A1 (de) * | 1986-03-13 | 1987-09-17 | Siemens Ag | Richtantennenanordnung |
US4821046A (en) * | 1986-08-21 | 1989-04-11 | Wilkes Brian J | Dual band feed system |
WO2005067099A1 (en) * | 2003-12-31 | 2005-07-21 | Brunello Locatori | Method and device for tv receiving and internet transreceiving on a satellite antenna |
ITMI20051167A1 (it) * | 2005-06-21 | 2006-12-22 | Claber Spa | "centralina elettronica multipla per il comando differenziato di elettrovalvole in impianti di irrigazione" |
US9966662B2 (en) | 2015-09-30 | 2018-05-08 | City University Of Hong Kong | Antenna |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1219279A (fr) * | 1958-12-20 | 1960-05-17 | Sagem | Antenne perfectionnée à très large bande |
DE1200387B (de) * | 1962-04-24 | 1965-09-09 | Telefunken Patent | Richtantennenkombination |
US3176301A (en) * | 1963-02-14 | 1965-03-30 | Richard S Wellons | Plural horns at focus of parabolic reflector with shields to reduce spillover and side lobes |
FR2096670B1 (it) * | 1970-05-20 | 1974-03-15 | Thomson Csf | |
US3803617A (en) * | 1972-04-14 | 1974-04-09 | Nasa | High efficiency multifrequency feed |
-
1977
- 1977-05-18 FR FR7715305A patent/FR2391570A1/fr active Granted
-
1978
- 1978-05-15 GB GB19636/78A patent/GB1588068A/en not_active Expired
- 1978-05-16 IT IT7849377A patent/IT1102673B/it active
- 1978-05-17 US US05/906,860 patent/US4207573A/en not_active Expired - Lifetime
- 1978-05-18 DE DE2821699A patent/DE2821699C2/de not_active Expired
- 1978-05-18 NL NLAANVRAGE7805375,A patent/NL180967C/xx not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
US4207573A (en) | 1980-06-10 |
NL180967B (nl) | 1986-12-16 |
DE2821699C2 (de) | 1983-10-27 |
IT1102673B (it) | 1985-10-07 |
FR2391570B1 (it) | 1980-09-19 |
DE2821699A1 (de) | 1978-11-23 |
FR2391570A1 (fr) | 1978-12-15 |
NL180967C (nl) | 1987-05-18 |
GB1588068A (en) | 1981-04-15 |
NL7805375A (nl) | 1978-11-21 |
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