NL6617906A - - Google Patents
Info
- Publication number
- NL6617906A NL6617906A NL6617906A NL6617906A NL6617906A NL 6617906 A NL6617906 A NL 6617906A NL 6617906 A NL6617906 A NL 6617906A NL 6617906 A NL6617906 A NL 6617906A NL 6617906 A NL6617906 A NL 6617906A
- Authority
- NL
- Netherlands
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
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 |
|---|---|
| NL6617906A true NL6617906A (en) | 1967-06-23 |
Family
ID=8596434
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL6617906A NL6617906A (en) | 1965-12-22 | 1966-12-20 |
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 |
|---|---|---|---|---|
| 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 |
| 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 |
| 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 NL NL6617906A patent/NL6617906A/xx unknown
- 1966-12-20 BE BE691480D patent/BE691480A/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 |
|---|---|
| DE1541478A1 (en) | 1969-08-28 |
| GB1160280A (en) | 1969-08-06 |
| BE691480A (en) | 1967-06-20 |
| FR1469077A (en) | 1967-02-10 |