GB1524296A - Periscopeassembly equipped with a device for intercepting parasitic radiation - Google Patents
Periscopeassembly equipped with a device for intercepting parasitic radiationInfo
- Publication number
- GB1524296A GB1524296A GB7508/76A GB750876A GB1524296A GB 1524296 A GB1524296 A GB 1524296A GB 7508/76 A GB7508/76 A GB 7508/76A GB 750876 A GB750876 A GB 750876A GB 1524296 A GB1524296 A GB 1524296A
- Authority
- GB
- United Kingdom
- Prior art keywords
- reflector
- collar
- vertical
- antenna
- feb
- 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
- H01Q19/104—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 using a substantially flat reflector for deflecting the radiated beam, e.g. periscopic antennas
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q17/00—Devices for absorbing waves radiated from an antenna; Combinations of such devices with active antenna elements or systems
- H01Q17/001—Devices for absorbing waves radiated from an antenna; Combinations of such devices with active antenna elements or systems for modifying the directional characteristic of an aerial
Landscapes
- Aerials With Secondary Devices (AREA)
Abstract
1524296 Aerials THOMSON-CSF 25 Feb 1976 [28 Feb 1975] 07508/76 Heading H4A An antenna arrangement includes reflector 3, arranged as a periscope and mounted at the top end of pylon 2 at the base of which is situated directional antenna 1. A microwave beam transmitted from antenna I vertically, in direction A, is deflected by reflector 3 into direction B. Any tendency for reflector 3 to also reflect unwanted microwave signals in direction B, e.g. from secondary lobes or nearby transmitters is reduced by provision of device 4 which forms a cowling over reflector 3, is shaped to have horizontal and vertical openings for passage of the wanted beam to and from reflector 3 and comprises an outer layer of metal and may further comprise an inner layer of microwave absorbing material e.g., graphite loaded polyurethane foam. Alternatively, the metal may be replaced by laminated glass. In another embodiment, Fig. 3, the device 4 may comprise only collar 42 around reflector 3, and horizontal and vertical collars 43 and 44 respectively. In a further embodiment vertical collar 44 may be dispensed with and the reflector collar suitably enlarged (Fig. 4, not shown).
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7506253A FR2302602A1 (en) | 1975-02-28 | 1975-02-28 | PERISCOP ASSEMBLY |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1524296A true GB1524296A (en) | 1978-09-13 |
Family
ID=9151876
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB7508/76A Expired GB1524296A (en) | 1975-02-28 | 1976-02-25 | Periscopeassembly equipped with a device for intercepting parasitic radiation |
Country Status (7)
| Country | Link |
|---|---|
| JP (2) | JPS51110242A (en) |
| DE (1) | DE2607664A1 (en) |
| FR (1) | FR2302602A1 (en) |
| GB (1) | GB1524296A (en) |
| IT (1) | IT1057260B (en) |
| NL (1) | NL7601923A (en) |
| SE (1) | SE7602564L (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NO312530B1 (en) * | 2000-04-13 | 2002-05-21 | Bertil Hogganvik | short Magazine |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5012994U (en) * | 1973-06-02 | 1975-02-10 |
-
1975
- 1975-02-28 FR FR7506253A patent/FR2302602A1/en active Granted
-
1976
- 1976-02-25 GB GB7508/76A patent/GB1524296A/en not_active Expired
- 1976-02-25 DE DE19762607664 patent/DE2607664A1/en active Pending
- 1976-02-25 NL NL7601923A patent/NL7601923A/en not_active Application Discontinuation
- 1976-02-26 SE SE7602564A patent/SE7602564L/en unknown
- 1976-02-27 JP JP51021017A patent/JPS51110242A/ja active Pending
- 1976-02-27 IT IT48320/76A patent/IT1057260B/en active
-
1983
- 1983-01-24 JP JP1983007345U patent/JPS58164310U/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| SE7602564L (en) | 1976-08-30 |
| JPS51110242A (en) | 1976-09-29 |
| IT1057260B (en) | 1982-03-10 |
| FR2302602B1 (en) | 1980-09-05 |
| FR2302602A1 (en) | 1976-09-24 |
| JPS58164310U (en) | 1983-11-01 |
| DE2607664A1 (en) | 1976-09-09 |
| NL7601923A (en) | 1976-08-31 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |