IT1245423B - Struttura dicroica discriminante in frequenza con banda passante variabile, e sue applicazioni - Google Patents
Struttura dicroica discriminante in frequenza con banda passante variabile, e sue applicazioniInfo
- Publication number
- IT1245423B IT1245423B ITTO910139A ITTO910139A IT1245423B IT 1245423 B IT1245423 B IT 1245423B IT TO910139 A ITTO910139 A IT TO910139A IT TO910139 A ITTO910139 A IT TO910139A IT 1245423 B IT1245423 B IT 1245423B
- Authority
- IT
- Italy
- Prior art keywords
- applications
- frequency
- variable bandwidth
- dichroic structure
- structure discriminating
- Prior art date
Links
- 239000004020 conductor Substances 0.000 abstract 2
- 239000003989 dielectric material Substances 0.000 abstract 2
- 230000000737 periodic effect Effects 0.000 abstract 2
- 239000000758 substrate Substances 0.000 abstract 2
- 230000009977 dual effect Effects 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/20—Filters
- G02B5/204—Filters in which spectral selection is performed by means of a conductive grid or array, e.g. frequency selective surfaces
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
- H01Q15/0006—Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices
- H01Q15/0013—Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices said selective devices working as frequency-selective reflecting surfaces, e.g. FSS, dichroic plates, surfaces being partly transmissive and reflective
- H01Q15/002—Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices said selective devices working as frequency-selective reflecting surfaces, e.g. FSS, dichroic plates, surfaces being partly transmissive and reflective said selective devices being reconfigurable or tunable, e.g. using switches or diodes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/44—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the electric or magnetic characteristics of reflecting, refracting, or diffracting devices associated with the radiating element
Abstract
La struttura comprende almeno una lastra di substrato (2) di materiale dielettrico, recante su almeno una faccia una distribuzione ordinata e geometricamente periodica di elementi di materiale elettricamente conduttore oppure, in modo duale, recante almeno uno strato di materiale conduttore (3) presentante una distribuzione ordinata e geometricamente periodica di aperture (4). Tale struttura è caratterizzata dal fatto che a detta lastra di substrato (2) di materiale dielettrico sono associati mezzi di controllo (5, 6; 7) atti a provocare una variazione della costante dielettrica o magnetica di detto materiale, in modo tale da modificare corrispondentemente la banda passante.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITTO910139A IT1245423B (it) | 1991-02-27 | 1991-02-27 | Struttura dicroica discriminante in frequenza con banda passante variabile, e sue applicazioni |
PCT/EP1992/000386 WO1992016031A1 (en) | 1991-02-27 | 1992-02-24 | A frequency-discriminating dichroic structure with a variable passband and applications thereof |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITTO910139A IT1245423B (it) | 1991-02-27 | 1991-02-27 | Struttura dicroica discriminante in frequenza con banda passante variabile, e sue applicazioni |
Publications (3)
Publication Number | Publication Date |
---|---|
ITTO910139A0 ITTO910139A0 (it) | 1991-02-27 |
ITTO910139A1 ITTO910139A1 (it) | 1992-08-27 |
IT1245423B true IT1245423B (it) | 1994-09-20 |
Family
ID=11408995
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ITTO910139A IT1245423B (it) | 1991-02-27 | 1991-02-27 | Struttura dicroica discriminante in frequenza con banda passante variabile, e sue applicazioni |
Country Status (2)
Country | Link |
---|---|
IT (1) | IT1245423B (it) |
WO (1) | WO1992016031A1 (it) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108983457A (zh) * | 2018-08-10 | 2018-12-11 | 南方科技大学 | 一种颜色可调谐的液晶彩色滤光片 |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5386215A (en) * | 1992-11-20 | 1995-01-31 | Massachusetts Institute Of Technology | Highly efficient planar antenna on a periodic dielectric structure |
DE69430361D1 (de) * | 1993-01-08 | 2002-05-16 | Massachusetts Inst Technology | Verlustarme optische und optoelektronische integrierte schaltungen |
GB9412850D0 (en) * | 1994-06-27 | 1994-08-17 | Secr Defence | Absorbent panel |
WO1996029621A1 (en) * | 1995-03-17 | 1996-09-26 | Massachusetts Institute Of Technology | Metallodielectric photonic crystal |
DE19713735C1 (de) * | 1997-04-03 | 1998-08-20 | Daimler Benz Aerospace Ag | Verfahren zur Herstellung von polarisationsselektiven Reflektoren |
EP0875957B1 (en) * | 1997-05-01 | 2005-06-01 | Kitagawa Industries Co., Ltd. | Electromagnetic wave absorber |
GB2332567B (en) * | 1997-12-17 | 2002-09-04 | Marconi Gec Ltd | Magnetic devices |
JP3739230B2 (ja) * | 1999-04-26 | 2006-01-25 | 株式会社日立製作所 | 高周波通信装置 |
FR2858469B1 (fr) * | 2003-07-30 | 2005-11-18 | Univ Rennes | Antenne a cavite resonante, reconfigurable |
DE102006061312A1 (de) * | 2006-12-22 | 2008-06-26 | Giesecke & Devrient Gmbh | Antenne zur Messung einer Bewegungsinformation nach dem Doppler-Prinzip, Transponder, System und Verfahren |
FR2959611B1 (fr) * | 2010-04-30 | 2012-06-08 | Thales Sa | Element rayonnant compact a cavites resonantes. |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3309704A (en) * | 1965-09-07 | 1967-03-14 | North American Aviation Inc | Tunable absorber |
US3631501A (en) * | 1970-02-16 | 1971-12-28 | Gen Dynamics Corp | Microwave phase shifter with liquid dielectric having metallic particles in suspension |
US4987418A (en) * | 1987-12-28 | 1991-01-22 | United Technologies Corporation | Ferroelectric panel |
SE463692B (sv) * | 1989-05-19 | 1991-01-07 | F Stefan Johansson | Antennanordning med reflektor eller lins bestaaende av ett frekvensstyrt galler |
-
1991
- 1991-02-27 IT ITTO910139A patent/IT1245423B/it active IP Right Grant
-
1992
- 1992-02-24 WO PCT/EP1992/000386 patent/WO1992016031A1/en active Application Filing
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108983457A (zh) * | 2018-08-10 | 2018-12-11 | 南方科技大学 | 一种颜色可调谐的液晶彩色滤光片 |
CN108983457B (zh) * | 2018-08-10 | 2021-12-03 | 南方科技大学 | 一种颜色可调谐的液晶彩色滤光片 |
Also Published As
Publication number | Publication date |
---|---|
WO1992016031A1 (en) | 1992-09-17 |
ITTO910139A1 (it) | 1992-08-27 |
ITTO910139A0 (it) | 1991-02-27 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
0001 | Granted | ||
TA | Fee payment date (situation as of event date), data collected since 19931001 |
Effective date: 19970128 |