GB1160280A - Improvements in Antennas for Radio Waves and in Particular Cassegrain Antennas - Google Patents
Improvements in Antennas for Radio Waves and in Particular Cassegrain AntennasInfo
- Publication number
- GB1160280A GB1160280A GB5754066A GB5754066A GB1160280A GB 1160280 A GB1160280 A GB 1160280A GB 5754066 A GB5754066 A GB 5754066A GB 5754066 A GB5754066 A GB 5754066A GB 1160280 A GB1160280 A GB 1160280A
- Authority
- GB
- United Kingdom
- Prior art keywords
- reflector
- antennas
- supplementary
- auxiliary
- cassegrain
- 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
- H01Q19/02—Details
- H01Q19/021—Means for reducing undesirable effects
- H01Q19/025—Means for reducing undesirable effects for optimizing the matching of the primary feed, e.g. vertex plates
Landscapes
- Aerials With Secondary Devices (AREA)
Abstract
1,160,280. Aerials. COMPAGNIE FRANCAISE THOMSON HOUSTON-HOTCHKISS BRANDT. 22 Dec., 1966 [22 Dec., 1965], No. 57540/66. Heading H4A. In an aerial of the two-reflector or Cassegrain type a supplementary reflector Rs is placed between the primary source S and the auxiliary reflector R a in order to increase the illumination upon the edge portions of the main reflector Rp, with the object of reducing the effects of aperture blocking by the said auxiliary reflector. The supplementary reflector may be supported on a rod t extending from the auxiliary reflector and may be constituted by a single disc, or by a series of discs whose diameters decrease towards the main reflector (Fig. 6, not shown). Alternatively, the supplementary reflector may comprise portions of cones or cylinders, or of hyperboloids, ellipsoids, or paraboloids, which may be confocal with the auxiliary reflector.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR43304A FR1469077A (en) | 1965-12-22 | 1965-12-22 | Improvements to antennas for radio waves and in particular to Cassegrain antennas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1160280A true GB1160280A (en) | 1969-08-06 |
Family
ID=8596434
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB5754066A Expired GB1160280A (en) | 1965-12-22 | 1966-12-22 | Improvements in Antennas for Radio Waves and in Particular Cassegrain Antennas |
Country Status (5)
| Country | Link |
|---|---|
| BE (1) | BE691480A (en) |
| DE (1) | DE1541478A1 (en) |
| FR (1) | FR1469077A (en) |
| GB (1) | GB1160280A (en) |
| NL (1) | NL6617906A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2937251A1 (en) * | 1979-09-14 | 1981-03-19 | Siemens AG, 1000 Berlin und 8000 München | Sub-reflector for directional horn aerial - carries two spaced auxiliary elements, one conical and one frusto=conical, both having different slopes |
| DE2937305A1 (en) * | 1979-09-14 | 1981-03-19 | Siemens AG, 1000 Berlin und 8000 München | Sub-reflector for directional horn aerial - has auxiliary conical element adjustably mounted by threaded stem on suitably curved outer face of sub-reflector |
| FR2540297B1 (en) * | 1983-01-28 | 1986-01-17 | Thomson Csf | MICROWAVE ANTENNA WITH TWO REFLECTORS |
| US6522305B2 (en) * | 2000-02-25 | 2003-02-18 | Andrew Corporation | Microwave antennas |
-
1965
- 1965-12-22 FR FR43304A patent/FR1469077A/en not_active Expired
-
1966
- 1966-12-20 BE BE691480D patent/BE691480A/xx unknown
- 1966-12-20 NL NL6617906A patent/NL6617906A/xx unknown
- 1966-12-21 DE DE19661541478 patent/DE1541478A1/en active Pending
- 1966-12-22 GB GB5754066A patent/GB1160280A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| NL6617906A (en) | 1967-06-23 |
| BE691480A (en) | 1967-06-20 |
| FR1469077A (en) | 1967-02-10 |
| DE1541478A1 (en) | 1969-08-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB1375680A (en) | ||
| GB647890A (en) | Directional antenna systems | |
| GB1411780A (en) | Microwave antenna with radome | |
| GB654734A (en) | Improvements in reflectors for radiant energy | |
| GB1331221A (en) | Aerials | |
| GB1513521A (en) | Selective gain reduction antenna | |
| GB1267802A (en) | Improvements in or relating to front-fed aerial systems | |
| GB1160280A (en) | Improvements in Antennas for Radio Waves and in Particular Cassegrain Antennas | |
| GB570568A (en) | Improvements in radiators of radioelectric waves | |
| GB938928A (en) | Aerial system for ultra-short waves | |
| GB1326210A (en) | Antenna using at least one reflector | |
| GB1465659A (en) | Wide-band spiral antenna | |
| GB1517544A (en) | Antenna system for use as side-lobe control means | |
| GB800466A (en) | Improvements in or relating to very short wave directional aerial systems | |
| GB969830A (en) | Low side lobe horn antenna | |
| GB976253A (en) | Improvements in or relating to aerial systems | |
| GB578018A (en) | Improvements in or relating to broadcast antennae and especially antennae for centimetre waves | |
| GB442193A (en) | Improvements in or relating to directive wireless signalling | |
| JPS5592002A (en) | Antenna unit | |
| GB1004049A (en) | Improvements in or relating to antenna arrangements | |
| GB1123951A (en) | Improved two reflector antenna | |
| GB1527951A (en) | Reflector antenna with matched feed system | |
| GB878466A (en) | Improvements to antenna devices | |
| ES317778A1 (en) | A television antenna for decimetric waves. (Machine-translation by Google Translate, not legally binding) | |
| GB1178782A (en) | Improvements in or relating to Radio Horn Arrangements |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |