GB2294813B - Frequency selective surface devices - Google Patents

Frequency selective surface devices

Info

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
Application number
GB9422278A
Other versions
GB2294813A (en
GB9422278D0 (en
Inventor
Robert Cahill
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.)
Matra Marconi Space UK Ltd
MMS Space Systems Ltd
Original Assignee
Matra Marconi Space UK Ltd
MMS Space Systems Ltd
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 Matra Marconi Space UK Ltd, MMS Space Systems Ltd filed Critical Matra Marconi Space UK Ltd
Priority to GB9422278A priority Critical patent/GB2294813B/en
Publication of GB9422278D0 publication Critical patent/GB9422278D0/en
Priority to EP95306717A priority patent/EP0711001B1/en
Priority to DE1995624546 priority patent/DE69524546T2/en
Publication of GB2294813A publication Critical patent/GB2294813A/en
Application granted granted Critical
Publication of GB2294813B publication Critical patent/GB2294813B/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
    • 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>
GB9422278A 1994-11-04 1994-11-04 Frequency selective surface devices Expired - Fee Related GB2294813B (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4125841A (en) * 1977-05-17 1978-11-14 Ohio State University Research Foundation Space filter

Patent Citations (2)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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