EP0197476A2 - Circulateur à micro-ondes - Google Patents

Circulateur à micro-ondes Download PDF

Info

Publication number
EP0197476A2
EP0197476A2 EP86104356A EP86104356A EP0197476A2 EP 0197476 A2 EP0197476 A2 EP 0197476A2 EP 86104356 A EP86104356 A EP 86104356A EP 86104356 A EP86104356 A EP 86104356A EP 0197476 A2 EP0197476 A2 EP 0197476A2
Authority
EP
European Patent Office
Prior art keywords
substrate
recess
metal plate
disc
microwave circulator
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.)
Granted
Application number
EP86104356A
Other languages
German (de)
English (en)
Other versions
EP0197476B1 (fr
EP0197476A3 (en
Inventor
Jörgen Dipl.-Ing. Wienke
Margarete Senn
Bernd Dipl.-Ing. Helmstetter
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.)
Bosch Telecom GmbH
Original Assignee
ANT Nachrichtentechnik GmbH
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 ANT Nachrichtentechnik GmbH filed Critical ANT Nachrichtentechnik GmbH
Priority to AT86104356T priority Critical patent/ATE80500T1/de
Publication of EP0197476A2 publication Critical patent/EP0197476A2/fr
Publication of EP0197476A3 publication Critical patent/EP0197476A3/de
Application granted granted Critical
Publication of EP0197476B1 publication Critical patent/EP0197476B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P1/00—Auxiliary devices
    • H01P1/32—Non-reciprocal transmission devices
    • H01P1/38—Circulators
    • H01P1/383—Junction circulators, e.g. Y-circulators
    • H01P1/387—Strip line circulators

Definitions

  • the present invention relates to a microwave circulator, consisting of a dielectric substrate carrying a stripline branch and a ferrite disc, which is inserted into a recess which partially penetrates the substrate below the stripline branch.
  • Such a microwave circulator is known from IEEE Transactions on Magnetics, Vol. Mag-11, No. 5, September 1975, pages 1273-1275.
  • the ferrite disc completely fills the substrate recess and is flush with the underside of the substrate.
  • the underside of the substrate is provided with a metallization serving as a ground line.
  • the ferrite disc is metallized on the underside and there e.g. electrically connected to the metallization of the substrate by soldering.
  • the metallization of the ferrite disc and the soldering of the ferrite and substrate metallization make the manufacturing process of a microwave circulator complex and expensive.
  • the invention is therefore based on the object of specifying a microwave circulator of the type mentioned at the outset, which can be implemented with as little effort as possible.
  • this object is achieved in that the substrate with its side opposite the strip line branch is applied to a metal plate, that the metal plate has a continuous bore, in which the ferrite disk protruding into the recess of the substrate continues, and that the bore opening on the the side of the metal plate opposite the substrate is covered by an electrically conductive disk which can be connected to the metal plate.
  • the microwave circulator according to the invention also has very good electrical properties.
  • the figure shows a section through a microwave circulator according to the invention.
  • a dielectric substrate 2 which is not made of ceramic (aluminum oxide) as usual, but made of a soft material, e.g. a polytetrafluoroethylene ceramic compound, which are also known under the trade names such as RT-Duroid or DI-Clad.
  • a soft material e.g. a polytetrafluoroethylene ceramic compound, which are also known under the trade names such as RT-Duroid or DI-Clad.
  • Such substrate materials are much easier to machine than hard ceramic materials, which has a particularly favorable effect when machining the recess 3 in the substrate.
  • the recess 3 is located below the strip line junction 1 applied to the top of the substrate 2.
  • a ferrite disc 4 is inserted into the recess 3, the depth of which is less than the substrate thickness, and partially protrudes from the recess 3.
  • a metal plate 5 (for example made of aluminum) serves as a carrier for the substrate 2 and as a ground line for the strip line structure 1 located on the upper side of the substrate.
  • a bore 6 is provided which serves to receive the part of the ferrite disc 4 which protrudes from the substrate recess 3.
  • the bore opening on the side (bottom side) of the metal plate 5 opposite the substrate 2 is covered with an electrically conductive disc 7, as a result of which the ferrite disc 4 is held in the bore 6 and the recess 3.
  • the disc 7 is electrically contacted with the metal plate 5 by means of screws 8 and 9.
  • An electrically conductive metal foil 10 placed between the disc 7, the metal plate 5 and the ferrite disc 4 improves the galvanic contact of the disc 7 with the metal plate 5 and serves to compensate for any difference between the thickness of the ferrite disc 4 and the depth of the recess 3 and hole 6.
  • the impedance of the strip line junction 1 can be varied as a function of the ferrite disc thickness and can thus be set to a desired value.
  • the stability of the thin substrate area present above the recess 3 can be improved in that the ferrite disc 4 is glued into the recess 3.
  • a dielectric filler introduced into the recess 3 between the ferrite disc 4 and the substrate 2 avoids the formation of an air gap.
  • the static magnetic field required for the circulator is generated by a permanent magnet 11 arranged above the stripline structure 1, which is glued to a metallic or dielectric spacer 12 in the exemplary embodiment shown.
  • a permanent magnet 11 arranged above the stripline structure 1, which is glued to a metallic or dielectric spacer 12 in the exemplary embodiment shown.
  • other known magnet systems can also be used.
  • the microwave circulator described above can be produced with little effort because no metallization of the ferrite disc and no soldering to the substrate ground surface is required and an easily machinable substrate made of soft material is used.
  • An exemplary embodiment of a circulator according to the invention with an RT-Duroid 6010 substrate of 635 ⁇ m thickness, a recess of approx. 300 ⁇ m depth embedded therein and a metal plate of approx. 3 mm thickness has a frequency bandwidth of ⁇ 20% at an operating frequency of 4 GHz. , a transmission loss of ⁇ 0.3 dB, a blocking loss of ⁇ 20 dB and an input standing wave ratio of ⁇ 1.2.

Landscapes

  • Non-Reversible Transmitting Devices (AREA)
  • Constitution Of High-Frequency Heating (AREA)
EP86104356A 1985-04-03 1986-03-29 Circulateur à micro-ondes Expired - Lifetime EP0197476B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86104356T ATE80500T1 (de) 1985-04-03 1986-03-29 Mikrowellen-zirkulator.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3512142 1985-04-03
DE19853512142 DE3512142A1 (de) 1985-04-03 1985-04-03 Mikrowellen-zirkulator

Publications (3)

Publication Number Publication Date
EP0197476A2 true EP0197476A2 (fr) 1986-10-15
EP0197476A3 EP0197476A3 (en) 1988-08-31
EP0197476B1 EP0197476B1 (fr) 1992-09-09

Family

ID=6267183

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86104356A Expired - Lifetime EP0197476B1 (fr) 1985-04-03 1986-03-29 Circulateur à micro-ondes

Country Status (3)

Country Link
EP (1) EP0197476B1 (fr)
AT (1) ATE80500T1 (fr)
DE (2) DE3512142A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU598595B2 (en) * 1986-10-22 1990-06-28 Siemens Telecomunicazioni S.P.A. Thin-film circulator with three matched gates
EP0962980A1 (fr) * 1998-06-05 1999-12-08 Thomson-Csf Module micro-électronique hyperfréquences comportant deux matériaux de substrat différents et procédé de fabrication d'un tel module
US11152677B2 (en) * 2018-11-12 2021-10-19 Qorvo Us, Inc. Integration of self-biased magnetic circulators with microwave devices

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103855456A (zh) * 2012-11-29 2014-06-11 中国航空工业第六○七研究所 一种嵌入式微带环行器的制作方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3334317A (en) * 1964-01-31 1967-08-01 Sylvania Electric Prod Ferrite stripline circulator having closed magnetic loop path and centrally located, conductive foil overlying radially extending center conductors
US3573666A (en) * 1969-02-27 1971-04-06 Gen Electric Frequency adjustable microwave stripline circulator
US3614670A (en) * 1969-11-05 1971-10-19 Richard G Wilson Switchable microwave circulator wherein ground planes are comprised of foils having vertically conductive particles
US3854106A (en) * 1974-02-19 1974-12-10 Bendix Corp Depressed-puck microstrip circulator
GB1512605A (en) * 1976-08-05 1978-06-01 Standard Telephones Cables Ltd Microwave integrated printed circuits

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU598595B2 (en) * 1986-10-22 1990-06-28 Siemens Telecomunicazioni S.P.A. Thin-film circulator with three matched gates
EP0962980A1 (fr) * 1998-06-05 1999-12-08 Thomson-Csf Module micro-électronique hyperfréquences comportant deux matériaux de substrat différents et procédé de fabrication d'un tel module
FR2779576A1 (fr) * 1998-06-05 1999-12-10 Thomson Csf Module micro-electronique hyperfrequences comportant deux materiaux de substrat differents et procede de fabrication d'un tel module
US11152677B2 (en) * 2018-11-12 2021-10-19 Qorvo Us, Inc. Integration of self-biased magnetic circulators with microwave devices

Also Published As

Publication number Publication date
DE3686663D1 (de) 1992-10-15
ATE80500T1 (de) 1992-09-15
EP0197476B1 (fr) 1992-09-09
DE3512142A1 (de) 1986-10-09
EP0197476A3 (en) 1988-08-31

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