GB2294813B - Frequency selective surface devices - Google Patents
Frequency selective surface devicesInfo
- Publication number
- GB2294813B GB2294813B GB9422278A GB9422278A GB2294813B GB 2294813 B GB2294813 B GB 2294813B GB 9422278 A GB9422278 A GB 9422278A GB 9422278 A GB9422278 A GB 9422278A GB 2294813 B GB2294813 B GB 2294813B
- Authority
- GB
- United Kingdom
- Prior art keywords
- layers
- frequency selective
- selective surface
- channels
- resonant elements
- 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
- 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
- H01Q15/0026—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 having a stacked geometry or having multiple layers
-
- 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
- H01Q15/0033—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 used for beam splitting or combining, e.g. acting as a quasi-optical multiplexer
Landscapes
- Aerials With Secondary Devices (AREA)
- Spectrometry And Color Measurement (AREA)
- Optical Filters (AREA)
Abstract
A frequency selective surface device separates or combines two channels by using two or three spaced layers of resonant elements such as loops 14 which are coupled and which have interactive effects between the layers such that the relatively broad transmission and reflection bands characteristic of the resonant elements are modified by reinforcement of multiple reflections between the layers in the manner of a Fabry-Perot etalon in order to increase the sharpness of the transition of the transmission and reflection bands and thereby to permit combination or separation of closely spaced channels. <IMAGE>
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9422278A GB2294813B (en) | 1994-11-04 | 1994-11-04 | Frequency selective surface devices |
EP95306717A EP0711001B1 (en) | 1994-11-04 | 1995-09-22 | Frequency selective surface devices |
DE1995624546 DE69524546T2 (en) | 1994-11-04 | 1995-09-22 | Frequency selective surface arrangement |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9422278A GB2294813B (en) | 1994-11-04 | 1994-11-04 | Frequency selective surface devices |
Publications (3)
Publication Number | Publication Date |
---|---|
GB9422278D0 GB9422278D0 (en) | 1994-12-21 |
GB2294813A GB2294813A (en) | 1996-05-08 |
GB2294813B true GB2294813B (en) | 1998-04-15 |
Family
ID=10763902
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB9422278A Expired - Fee Related GB2294813B (en) | 1994-11-04 | 1994-11-04 | Frequency selective surface devices |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0711001B1 (en) |
DE (1) | DE69524546T2 (en) |
GB (1) | GB2294813B (en) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5949387A (en) * | 1997-04-29 | 1999-09-07 | Trw Inc. | Frequency selective surface (FSS) filter for an antenna |
GB2378820A (en) * | 2001-08-17 | 2003-02-19 | Anafa Electromagnetic Solution | Electromagnetic filter |
GB2415093A (en) * | 2004-06-07 | 2005-12-14 | Qinetiq Nanomaterials Ltd | Method of producing composite materials |
US7794629B2 (en) | 2003-11-25 | 2010-09-14 | Qinetiq Limited | Composite materials |
GB2439975B (en) | 2006-07-07 | 2010-02-24 | Iti Scotland Ltd | Antenna arrangement |
CN102760964A (en) * | 2012-07-03 | 2012-10-31 | 深圳光启创新技术有限公司 | Wave-transmitting meta-material and antenna cover and antenna system with material |
WO2017019948A1 (en) * | 2015-07-30 | 2017-02-02 | Laird Technologies, Inc. | Frequency selective structures for emi mitigation |
US12022642B2 (en) | 2018-08-21 | 2024-06-25 | Laird Technologies, Inc. | Patterned electromagnetic interference (EMI) mitigation materials including carbon nanotubes |
CN109560374B (en) * | 2018-11-22 | 2021-01-05 | 西安电子科技大学 | High-gain low-radar-section Fabry-Perot antenna |
EP4059087A4 (en) * | 2020-03-30 | 2023-11-29 | Telefonaktiebolaget LM Ericsson (publ.) | Au and ru having cwg filters, and bs having the au or ru |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0096529A1 (en) * | 1982-06-01 | 1983-12-21 | Kent Scientific and Industrial Projects Limited | Dichroic plate |
US4476471A (en) * | 1981-02-09 | 1984-10-09 | Nippon Electric Co., Ltd. | Antenna apparatus including frequency separator having wide band transmission or reflection characteristics |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4125841A (en) * | 1977-05-17 | 1978-11-14 | Ohio State University Research Foundation | Space filter |
-
1994
- 1994-11-04 GB GB9422278A patent/GB2294813B/en not_active Expired - Fee Related
-
1995
- 1995-09-22 EP EP95306717A patent/EP0711001B1/en not_active Expired - Lifetime
- 1995-09-22 DE DE1995624546 patent/DE69524546T2/en not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4476471A (en) * | 1981-02-09 | 1984-10-09 | Nippon Electric Co., Ltd. | Antenna apparatus including frequency separator having wide band transmission or reflection characteristics |
EP0096529A1 (en) * | 1982-06-01 | 1983-12-21 | Kent Scientific and Industrial Projects Limited | Dichroic plate |
Non-Patent Citations (2)
Title |
---|
Frequency selective surfaces for millimetre and submillimetre wave quasi optical demultiplexing * |
Int. J. of Infrared and Millimetre Waves Vol. 14, No. 9 Cahill, Sturland, Bowen, Parker, de Lima * |
Also Published As
Publication number | Publication date |
---|---|
DE69524546D1 (en) | 2002-01-24 |
GB2294813A (en) | 1996-05-08 |
EP0711001B1 (en) | 2001-12-12 |
EP0711001A3 (en) | 1997-07-16 |
EP0711001A2 (en) | 1996-05-08 |
DE69524546T2 (en) | 2002-05-08 |
GB9422278D0 (en) | 1994-12-21 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
732E | Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977) | ||
732E | Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977) | ||
PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 20121104 |