EP0265001A2 - Dünnschichtiger Zirkulator mit drei angepassten Anschlüssen - Google Patents

Dünnschichtiger Zirkulator mit drei angepassten Anschlüssen Download PDF

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Publication number
EP0265001A2
EP0265001A2 EP87201928A EP87201928A EP0265001A2 EP 0265001 A2 EP0265001 A2 EP 0265001A2 EP 87201928 A EP87201928 A EP 87201928A EP 87201928 A EP87201928 A EP 87201928A EP 0265001 A2 EP0265001 A2 EP 0265001A2
Authority
EP
European Patent Office
Prior art keywords
circulator
thin
substrate
metallization
face
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
EP87201928A
Other languages
English (en)
French (fr)
Other versions
EP0265001B1 (de
EP0265001A3 (en
Inventor
Franco Marconi
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.)
Siemens Telecomunicazioni SpA
Original Assignee
Siemens Telecomunicazioni SpA
GTE Telecommunicazioni SpA
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 Siemens Telecomunicazioni SpA, GTE Telecommunicazioni SpA filed Critical Siemens Telecomunicazioni SpA
Publication of EP0265001A2 publication Critical patent/EP0265001A2/de
Publication of EP0265001A3 publication Critical patent/EP0265001A3/en
Application granted granted Critical
Publication of EP0265001B1 publication Critical patent/EP0265001B1/de
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

  • a known three-gate circulator is made at pres­ent with a substrate of magnetizable material formed of a garnet or ferrite disk entirely metallized on both sides and inserted in a special hole made in a dielectric substrate. Access thereto is through three transmission lines depos­ited on the dielectric substrate and arranged at 120° to each other. If a magnetizable substrate in circular form is not available, one of the sides of the magnetizable substrate is metallized with a circular geometry of appropriate diameter the access to which is likewise obtained with three transmission lines arranged at 120° on the magnetizable substrate.
  • This metallization geometry made it possible to reduce the diameter of the magnetizable substrate and hence the space occupied by the device, transmission frequency being equal, but didn't solve the problem of matching.
  • the operation of the circulator was also unsatisfactory.
  • the object of the present invention is accor­dingly to achieve a thin-film three-gate circul­ator which would occupy little space and display selfmatching impedance characteristics such that no external adapters would be needed.
  • a circulator comprising a substrate of magnetizable material with one face provided with unbroken thin-film metallization and another face provided with thin-film metallization having a geometry such that it describes three transmission lines 120° apart converging at a common centre from respective input and output gates characterized in that it comprises three other line sections placed at intervals between said transmission lines and coming together at said common centre to achieve impedance matching of said input and output gates.
  • the present invention takes as its starting point the known three-area circul­ator, reducing the extent of said areas in favor of the intervals between said areas, wherein there have been inserted respective line sections (stubs) having an impedance matching function.
  • the result is a circulator made up of three transmission lines 120° apart provided with imped­ance matching units. The space occupied by the circulator is thus further reduced and the in­sertion losses otherwise caused by the external matching networks are eliminated.
  • the conformation of the line sections 6, gener­ally of uniform width up to a terminal narrowing 7 before the common centre 4, is such that the transmission lines 3 have in turn an innermost line portion 8 of uniform width (and hence impedance) and an outermost line portion 9 of variable width (and hence impedance) in the direction of propagation.
  • the outermost portion 9 communicates with the corresponding input/output gate 5.
  • the circulator of FIGS. 1 and 2 is designed to be inserted in a dielectric substrate on which is made a microwave circuit and together therewith in a container in which there is also housed a magnet capable of supplying a steady magnetic field.
  • This design is known in itself and is therefore not described and illustrated in detail here.

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  • Non-Reversible Transmitting Devices (AREA)
  • Laminated Bodies (AREA)
  • Electroluminescent Light Sources (AREA)
EP87201928A 1986-10-22 1987-10-08 Dünnschichtiger Zirkulator mit drei angepassten Anschlüssen Expired - Lifetime EP0265001B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT8622088A IT1213510B (it) 1986-10-22 1986-10-22 Circolatore adatto a tre porte in film sottile.
IT2208886 1986-10-22

Publications (3)

Publication Number Publication Date
EP0265001A2 true EP0265001A2 (de) 1988-04-27
EP0265001A3 EP0265001A3 (en) 1989-07-19
EP0265001B1 EP0265001B1 (de) 1993-03-31

Family

ID=11191327

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87201928A Expired - Lifetime EP0265001B1 (de) 1986-10-22 1987-10-08 Dünnschichtiger Zirkulator mit drei angepassten Anschlüssen

Country Status (8)

Country Link
EP (1) EP0265001B1 (de)
JP (1) JPS63160401A (de)
AU (1) AU598595B2 (de)
DE (1) DE3785134T2 (de)
ES (1) ES2041676T3 (de)
IT (1) IT1213510B (de)
NO (1) NO170182C (de)
ZA (1) ZA877874B (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6130587A (en) * 1997-09-12 2000-10-10 Electronics And Telecommunications Research Institute Microstripline/stripline isolator/circulator having a propeller resonator

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2401188A1 (de) * 1973-04-17 1974-10-24 Inst Fuer Nachrichtentechnik Y-zirkulator in streifenleiterbauweise
JPS5537040A (en) * 1978-09-07 1980-03-14 Tsukasa Nagao Impedance selective compensating circulator
FR2445038A1 (fr) * 1978-12-19 1980-07-18 Nippon Electric Co Isolateur a micro-bandes

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA941472A (en) * 1970-10-19 1974-02-05 Rca Corporation Surface strip transmission junction circulator
US3716805A (en) * 1971-08-30 1973-02-13 R Knerr Delta connected lumped element circulator
JPS5338953A (en) * 1976-09-21 1978-04-10 Mitsubishi Electric Corp Strip line circulator
DE3512142A1 (de) * 1985-04-03 1986-10-09 ANT Nachrichtentechnik GmbH, 7150 Backnang Mikrowellen-zirkulator

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2401188A1 (de) * 1973-04-17 1974-10-24 Inst Fuer Nachrichtentechnik Y-zirkulator in streifenleiterbauweise
JPS5537040A (en) * 1978-09-07 1980-03-14 Tsukasa Nagao Impedance selective compensating circulator
FR2445038A1 (fr) * 1978-12-19 1980-07-18 Nippon Electric Co Isolateur a micro-bandes

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
IEEE TRANS. ON MICROWAVE THEORY & TECHN., vol. MTT-28, no. 6, June 1980, pages 616-621, IEEE, New York, US; J. HELSZAJN et al.: "Characteristics of circulators using planar triangular and disk resonators symmetrically loaded with magnetic ridges" *
PATENT ABSTRACTS OF JAPAN, vol. 4, no. 67 (E-11)[549], 20th May 1980, page 117 E 11; & JP-A-55 037 040 (TSUKASA NAGAO) 14-03-1980 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6130587A (en) * 1997-09-12 2000-10-10 Electronics And Telecommunications Research Institute Microstripline/stripline isolator/circulator having a propeller resonator

Also Published As

Publication number Publication date
ES2041676T3 (es) 1993-12-01
NO874396L (no) 1988-04-25
DE3785134D1 (de) 1993-05-06
NO874396D0 (no) 1987-10-21
ZA877874B (en) 1988-04-22
NO170182C (no) 1992-09-16
IT1213510B (it) 1989-12-20
IT8622088A0 (it) 1986-10-22
AU7959987A (en) 1988-04-28
NO170182B (no) 1992-06-09
AU598595B2 (en) 1990-06-28
DE3785134T2 (de) 1993-09-02
JPS63160401A (ja) 1988-07-04
EP0265001B1 (de) 1993-03-31
EP0265001A3 (en) 1989-07-19

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