DE69521744D1 - Adjustable Fresnel zone plate - Google Patents
Adjustable Fresnel zone plateInfo
- Publication number
- DE69521744D1 DE69521744D1 DE69521744T DE69521744T DE69521744D1 DE 69521744 D1 DE69521744 D1 DE 69521744D1 DE 69521744 T DE69521744 T DE 69521744T DE 69521744 T DE69521744 T DE 69521744T DE 69521744 D1 DE69521744 D1 DE 69521744D1
- Authority
- DE
- Germany
- Prior art keywords
- zone plate
- fresnel zone
- adjustable fresnel
- adjustable
- plate
- 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 - Fee Related
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
- H01Q19/06—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 refracting or diffracting devices, e.g. lens
- H01Q19/062—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 refracting or diffracting devices, e.g. lens for focusing
- H01Q19/065—Zone plate type antennas
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL9400974A NL9400974A (en) | 1994-06-15 | 1994-06-15 | Adjustable Fresnel zone plate. |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69521744D1 true DE69521744D1 (en) | 2001-08-23 |
DE69521744T2 DE69521744T2 (en) | 2002-05-23 |
Family
ID=19864316
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE1995621744 Expired - Fee Related DE69521744T2 (en) | 1994-06-15 | 1995-06-06 | Adjustable Fresnel zone plate |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0688062B1 (en) |
DE (1) | DE69521744T2 (en) |
NL (1) | NL9400974A (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NO315397B1 (en) | 2001-11-13 | 2003-08-25 | Sinvent As | Optical offset sensor |
US7136227B2 (en) | 2004-08-06 | 2006-11-14 | Matsushita Electric Industrial Co., Ltd. | Fresnel zone plate based on elastic materials |
US7460084B2 (en) * | 2005-10-19 | 2008-12-02 | Northrop Grumman Corporation | Radio frequency holographic transformer |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3978484A (en) * | 1975-02-12 | 1976-08-31 | Collier Donald C | Waveguide-tuned phased array antenna |
NL8800538A (en) * | 1988-03-03 | 1988-08-01 | Hollandse Signaalapparaten Bv | ANTENNA SYSTEM WITH VARIABLE BUNDLE WIDTH AND BUNDLE ORIENTATION. |
US4905014A (en) | 1988-04-05 | 1990-02-27 | Malibu Research Associates, Inc. | Microwave phasing structures for electromagnetically emulating reflective surfaces and focusing elements of selected geometry |
GB2254192B (en) * | 1989-05-12 | 1994-01-12 | Marconi Gec Ltd | Antenna apparatus |
-
1994
- 1994-06-15 NL NL9400974A patent/NL9400974A/en not_active Application Discontinuation
-
1995
- 1995-06-06 EP EP19950201485 patent/EP0688062B1/en not_active Expired - Lifetime
- 1995-06-06 DE DE1995621744 patent/DE69521744T2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
EP0688062A3 (en) | 1996-05-15 |
DE69521744T2 (en) | 2002-05-23 |
EP0688062B1 (en) | 2001-07-18 |
NL9400974A (en) | 1996-01-02 |
EP0688062A2 (en) | 1995-12-20 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |