DE69521744D1 - Adjustable Fresnel zone plate - Google Patents

Adjustable Fresnel zone plate

Info

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
Application number
DE69521744T
Other languages
German (de)
Other versions
DE69521744T2 (en
Inventor
Bernard Jozef Reits
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Thales Nederland BV
Original Assignee
Thales Nederland BV
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Thales Nederland BV filed Critical Thales Nederland BV
Publication of DE69521744D1 publication Critical patent/DE69521744D1/en
Application granted granted Critical
Publication of DE69521744T2 publication Critical patent/DE69521744T2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
DE1995621744 1994-06-15 1995-06-06 Adjustable Fresnel zone plate Expired - Fee Related DE69521744T2 (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Also Published As

Publication number Publication date
NL9400974A (en) 1996-01-02
EP0688062B1 (en) 2001-07-18
EP0688062A3 (en) 1996-05-15
EP0688062A2 (en) 1995-12-20
DE69521744T2 (en) 2002-05-23

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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