EP1137102A3 - Frequency variable aperture reflector - Google Patents

Frequency variable aperture reflector Download PDF

Info

Publication number
EP1137102A3
EP1137102A3 EP01106761A EP01106761A EP1137102A3 EP 1137102 A3 EP1137102 A3 EP 1137102A3 EP 01106761 A EP01106761 A EP 01106761A EP 01106761 A EP01106761 A EP 01106761A EP 1137102 A3 EP1137102 A3 EP 1137102A3
Authority
EP
European Patent Office
Prior art keywords
frequency
variable aperture
frequency variable
aperture reflector
active surface
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.)
Withdrawn
Application number
EP01106761A
Other languages
German (de)
French (fr)
Other versions
EP1137102A2 (en
Inventor
Parthasarathy Ramanujam
Guy Goyette
John J Moncada
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.)
Boeing Co
Original Assignee
Boeing Co
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 Boeing Co filed Critical Boeing Co
Publication of EP1137102A2 publication Critical patent/EP1137102A2/en
Publication of EP1137102A3 publication Critical patent/EP1137102A3/en
Withdrawn legal-status Critical Current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
    • 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
    • H01Q19/10—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 reflecting surfaces
    • H01Q19/18—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 reflecting surfaces having two or more spaced reflecting surfaces
    • H01Q19/19—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 reflecting surfaces having two or more spaced reflecting surfaces comprising one main concave reflecting surface associated with an auxiliary reflecting surface
    • H01Q19/195—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 reflecting surfaces having two or more spaced reflecting surfaces comprising one main concave reflecting surface associated with an auxiliary reflecting surface wherein a reflecting surface acts also as a polarisation filter or a polarising device

Landscapes

  • Aerials With Secondary Devices (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)

Abstract

A frequency variable aperture reflector (18) for working in a first and second frequency band, wherein the first frequency band is higher than the second frequency, includes a radiating element having an active surface (20) and a frequency selective surface (22). The active surface (20) is a contiguous surface capable of reflecting both the first and second frequency bands. The frequency selective surface (22) surrounds the active surface (20) and only reflects the second frequency band (Fig. 2).
EP01106761A 2000-03-20 2001-03-17 Frequency variable aperture reflector Withdrawn EP1137102A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US52860500A 2000-03-20 2000-03-20
US528605 2000-03-20

Publications (2)

Publication Number Publication Date
EP1137102A2 EP1137102A2 (en) 2001-09-26
EP1137102A3 true EP1137102A3 (en) 2004-01-07

Family

ID=24106386

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01106761A Withdrawn EP1137102A3 (en) 2000-03-20 2001-03-17 Frequency variable aperture reflector

Country Status (1)

Country Link
EP (1) EP1137102A3 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108281795A (en) * 2017-12-05 2018-07-13 安徽四创电子股份有限公司 A kind of frequency-selective surfaces type curved surface medium and Cassegrain antenna system

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7034771B2 (en) 2003-09-10 2006-04-25 The Boeing Company Multi-beam and multi-band antenna system for communication satellites
US8325495B2 (en) * 2010-08-16 2012-12-04 The Boeing Company Electronic device protection
US8947892B1 (en) 2010-08-16 2015-02-03 The Boeing Company Electronic device protection
US10797401B2 (en) * 2016-12-13 2020-10-06 Mitsubishi Electric Corporation Reflection mirror antenna device

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3514781A (en) * 1967-12-05 1970-05-26 Us Army Broadband,high gain antenna with relatively constant beamwidth
US4096483A (en) * 1975-03-14 1978-06-20 Thomson-Csf Reflector with frequency selective ring of absorptive material for aperture control
US4814785A (en) * 1988-01-25 1989-03-21 Hughes Aircraft Company Wideband gridded square frequency selective surface
US4851858A (en) * 1984-01-26 1989-07-25 Messerschmitt-Boelkow-Blohm Gmbh Reflector antenna for operation in more than one frequency band
US5977926A (en) * 1998-09-10 1999-11-02 Trw Inc. Multi-focus reflector antenna

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3514781A (en) * 1967-12-05 1970-05-26 Us Army Broadband,high gain antenna with relatively constant beamwidth
US4096483A (en) * 1975-03-14 1978-06-20 Thomson-Csf Reflector with frequency selective ring of absorptive material for aperture control
US4851858A (en) * 1984-01-26 1989-07-25 Messerschmitt-Boelkow-Blohm Gmbh Reflector antenna for operation in more than one frequency band
US4814785A (en) * 1988-01-25 1989-03-21 Hughes Aircraft Company Wideband gridded square frequency selective surface
US5977926A (en) * 1998-09-10 1999-11-02 Trw Inc. Multi-focus reflector antenna

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108281795A (en) * 2017-12-05 2018-07-13 安徽四创电子股份有限公司 A kind of frequency-selective surfaces type curved surface medium and Cassegrain antenna system
CN108281795B (en) * 2017-12-05 2020-10-30 安徽四创电子股份有限公司 Frequency selection surface type curved surface medium and Cassegrain antenna system

Also Published As

Publication number Publication date
EP1137102A2 (en) 2001-09-26

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