GB1043125A - Housing for microwave receivers and transmitters - Google Patents

Housing for microwave receivers and transmitters

Info

Publication number
GB1043125A
GB1043125A GB830664A GB830664A GB1043125A GB 1043125 A GB1043125 A GB 1043125A GB 830664 A GB830664 A GB 830664A GB 830664 A GB830664 A GB 830664A GB 1043125 A GB1043125 A GB 1043125A
Authority
GB
United Kingdom
Prior art keywords
wall
dielectric constant
layer
microwave
housing
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
Application number
GB830664A
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 SA
Original Assignee
CSF Compagnie Generale de Telegraphie sans Fil SA
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 CSF Compagnie Generale de Telegraphie sans Fil SA filed Critical CSF Compagnie Generale de Telegraphie sans Fil SA
Publication of GB1043125A publication Critical patent/GB1043125A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K9/00—Screening of apparatus or components against electric or magnetic fields
    • H05K9/0073—Shielding materials
    • H05K9/0081—Electromagnetic shielding materials, e.g. EMI, RFI shielding
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q17/00—Devices for absorbing waves radiated from an antenna; Combinations of such devices with active antenna elements or systems
    • H01Q17/008—Devices for absorbing waves radiated from an antenna; Combinations of such devices with active antenna elements or systems with a particular shape

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
  • Aerials With Secondary Devices (AREA)
  • Details Of Aerials (AREA)

Abstract

1,043,125. Microwave housings. CSFCOMPAGNIE GENERALE DE TELEGRAPHIE SANS FIL. Feb. 27, 1964 [March 1, 1963], No. 8306/64. Heading H4A. In order to prevent reflection of microwaves at a wall A of a housing for a microwave transmitter and/or receiver, the characteristic impedance of the wall is matched to that of free space by attaching to one or both sides of the wall a plurality of layers of dielectric material B, C, D of decreasing effective dielectric constant from the inner layer B to the outer layer D, e.g. 2À8, 2 and 1'4 respectively when the dielectric constant of the wall is 4, an effective dielectric constant of 1'4 for the outer layer D being obtained by machining slots or holes in a homogeneous layer of dielectric constant 2, the separation between slots being less than the shortest wavelength. The wall may comprise a radiation transparent portion of stratified glass and an opaque metal part E, Fig. 2 (not shown); in the latter case a layer of microwave absorbing material A<SP>1</SP> is interposed between the wall and the inner layer B of dielectric material.
GB830664A 1963-03-01 1964-02-27 Housing for microwave receivers and transmitters Expired GB1043125A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR926473A FR1357823A (en) 1963-03-01 1963-03-01 Envelopes for microwave receivers and transmitters

Publications (1)

Publication Number Publication Date
GB1043125A true GB1043125A (en) 1966-09-21

Family

ID=8798208

Family Applications (1)

Application Number Title Priority Date Filing Date
GB830664A Expired GB1043125A (en) 1963-03-01 1964-02-27 Housing for microwave receivers and transmitters

Country Status (3)

Country Link
DE (1) DE1441626A1 (en)
FR (1) FR1357823A (en)
GB (1) GB1043125A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3780374A (en) * 1971-03-11 1973-12-18 Sumitomo Electric Industries Radome with matching layers
US4179699A (en) * 1977-07-05 1979-12-18 The Boeing Company Low reflectivity radome
GB2192756A (en) * 1986-07-07 1988-01-20 Hoybond Limited Energy absorbing coatings and their use in camouflage
US4980696A (en) * 1987-05-12 1990-12-25 Sippican Ocean Systems, Inc. Radome for enclosing a microwave antenna
US5017939A (en) * 1989-09-26 1991-05-21 Hughes Aircraft Company Two layer matching dielectrics for radomes and lenses for wide angles of incidence
US5121129A (en) * 1990-03-14 1992-06-09 Space Systems/Loral, Inc. EHF omnidirectional antenna
GB2319117A (en) * 1978-02-22 1998-05-13 Emi Ltd Materials which absorb electromagnetic energy

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2731846B1 (en) * 1987-04-14 1997-07-25 Thomson Csf WALL FOR RADOMES AND RADOMES THUS OBTAINED
FR2772520B1 (en) * 1997-12-11 2000-01-14 Giat Ind Sa RADAR WAVE ABSORBING COMPOSITE MATERIAL AND USE OF SUCH MATERIAL
CN108767492B (en) * 2018-04-25 2020-12-04 北京邮电大学 Adjustable terahertz broadband wave absorber

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3780374A (en) * 1971-03-11 1973-12-18 Sumitomo Electric Industries Radome with matching layers
US4179699A (en) * 1977-07-05 1979-12-18 The Boeing Company Low reflectivity radome
GB2319117A (en) * 1978-02-22 1998-05-13 Emi Ltd Materials which absorb electromagnetic energy
GB2319117B (en) * 1978-02-22 1998-09-02 Emi Ltd Improvements in or relating to materials which absorb electromagnetic energy
GB2192756A (en) * 1986-07-07 1988-01-20 Hoybond Limited Energy absorbing coatings and their use in camouflage
US4980696A (en) * 1987-05-12 1990-12-25 Sippican Ocean Systems, Inc. Radome for enclosing a microwave antenna
US5017939A (en) * 1989-09-26 1991-05-21 Hughes Aircraft Company Two layer matching dielectrics for radomes and lenses for wide angles of incidence
US5121129A (en) * 1990-03-14 1992-06-09 Space Systems/Loral, Inc. EHF omnidirectional antenna

Also Published As

Publication number Publication date
DE1441626B2 (en) 1969-10-09
FR1357823A (en) 1964-04-10
DE1441626A1 (en) 1969-03-06

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