EP0154703B1 - Resonator - Google Patents

Resonator Download PDF

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Publication number
EP0154703B1
EP0154703B1 EP19840115210 EP84115210A EP0154703B1 EP 0154703 B1 EP0154703 B1 EP 0154703B1 EP 19840115210 EP19840115210 EP 19840115210 EP 84115210 A EP84115210 A EP 84115210A EP 0154703 B1 EP0154703 B1 EP 0154703B1
Authority
EP
European Patent Office
Prior art keywords
resonator
metal layer
slit
support
resonance frequency
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 - Lifetime
Application number
EP19840115210
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0154703A2 (de
EP0154703A3 (en
Inventor
Heinz Diplomingenieur Pfizenmaier
Franz Strauss
Ewald Ingenieur Schmidt (Grad.)
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch 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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0154703A2 publication Critical patent/EP0154703A2/de
Publication of EP0154703A3 publication Critical patent/EP0154703A3/de
Application granted granted Critical
Publication of EP0154703B1 publication Critical patent/EP0154703B1/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
    • H01P7/00—Resonators of the waveguide type
    • H01P7/08—Strip line resonators
    • H01P7/082—Microstripline resonators

Definitions

  • the invention is based on a resonator according to the type specified in the preamble of claim 1.
  • Such a resonator is known (US-A-2 838 736) which has a tubular, rigid dielectric, the outer lateral surface of which carries a metal layer.
  • the inner lateral surface has no metal layer.
  • the resonant frequency of the resonator is set by applying an electrical voltage to a cylindrical core made of dielectric material located in the cavity.
  • Resonators are already known (Kurt Rint, Handbuch für Hochfrequenz- und Elektro-Techniker, Wegig-Verlag, Volume V, 1981, pages 566 ff.), which are manufactured using stripline technology.
  • Such resonators consist of a flat plate made of dielectric material with short-circuited or open line pieces located thereon.
  • Such resonators have the disadvantage that they take up a relatively large amount of space on a circuit board.
  • the resonator according to the invention with the characterizing features of claim 1 has the advantage that a high mechanical stability and a high long-term constancy of the electrical properties is achieved by the tubular, monolithic structure. Another advantage is that the resonator is of high quality and that it produces reproducible values even in series production.
  • a resonator in which the resonance frequency of the resonator can be tuned by changing the width of the slot is particularly advantageous. In this way, coordination is possible without fear of loss of quality.
  • a resonator according to the invention consists of a tubular support 11, which is provided on its outer lateral surface 12 with a metal layer 13 and on its inner lateral surface with a metal layer 14.
  • the outer metal layer 13 has a continuous slot 15 and extending in the axial direction of the carrier 11 at the lower end of the slot two pads 16, 17 for conductors 18 and 19.
  • a conductor 20 is conductively connected to the inner metal layer 14.
  • the tubular support 11 is made of a dielectric material, preferably barium titanate, and the metal layers 13 and 14 are applied, for example, by electroplating, by vapor deposition, in a printing process using thick-film technology or by another suitable process.
  • the dimensioning of the resonator depends on the dielectric constant of the carrier material, the diameter and the wall thickness of the carrier as well as on the geometry of the outer metal layer 13 in such a way that the four-pole properties are optimal, in particular with regard to the insertion loss and the phase response.
  • FIG. 2 An equivalent circuit diagram of the resonator according to FIG. 1 is shown in FIG. 2.
  • the connections 30, 31 correspond to the connection surfaces 16 and 17, the capacitor 32 and the covering 33 correspond to the slot 15 in connection with the outer metal layer 13, the conductor 34 of the inner metal layer 14 and the connections 35, 36 to the conductor 20.
  • the inner metal layer 40 (FIG. 3) is provided with a longitudinal slot 41, while the outer lateral surface 42 is completely provided with a metal layer 43. This ensures that the resonator is stray field.
  • the contacting of the inner metal layer 40 can take place in an analogous manner to the connection areas 16 and 17 according to FIG. 1 or by means of plated-through holes 44 and 45 which end on the outside of the carrier 42 in two recesses 46, 47 of the outer metal layer 43.
  • the shielding of the resonator can be further improved if a tubular support 50 (FIG. 4) is closed at both ends with a shielding cover 51, 52.
  • a tubular support 50 (FIG. 4) is closed at both ends with a shielding cover 51, 52.
  • inner and outer metal layers 53, 54 can each be provided with a continuous longitudinal slot 55, 56. In this case it is advantageous to arrange the slots diametrically opposite one another.
  • a double resonator 60 is created in that a tubular support 61 is provided with two axially separated metal layers 63, 64. Two separate metal layers are then likewise present on the inside of the carrier 61. If necessary, more than two metal layers can also be arranged on the carrier, so that a triple or multiple resonator and thus a filter circuit are produced.
  • the frequency adjustment of the resonators according to FIGS. 1 and 3 to 5 is preferably carried out by providing additional slots in the inner or outer metal layer; see. for example Fig. 4, dashed slot 57.
  • a frequency adjustment can also be carried out by changing the slot width of the existing slots, for example 15 in Fig. 1.
  • Another possibility of frequency adjustment of a resonator according to the invention is to insert a suitable cylindrical adjustment core into the interior of the tubular carrier.
  • connection surfaces 16 and 17 protrude beyond the lower edge of the tubular support 11 and fit into corresponding slots in the printed circuit board.
  • a corresponding connection surface could then be provided instead of the conductor 20.
  • the connection surfaces would be arranged on appropriately shaped projections of the carrier.

Landscapes

  • Control Of Motors That Do Not Use Commutators (AREA)
EP19840115210 1984-03-09 1984-12-12 Resonator Expired - Lifetime EP0154703B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19843408581 DE3408581A1 (de) 1984-03-09 1984-03-09 Resonator
DE3408581 1984-03-09

Publications (3)

Publication Number Publication Date
EP0154703A2 EP0154703A2 (de) 1985-09-18
EP0154703A3 EP0154703A3 (en) 1987-06-24
EP0154703B1 true EP0154703B1 (de) 1991-08-14

Family

ID=6229957

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19840115210 Expired - Lifetime EP0154703B1 (de) 1984-03-09 1984-12-12 Resonator

Country Status (5)

Country Link
US (1) US4742320A (da)
EP (1) EP0154703B1 (da)
JP (1) JPH0624284B2 (da)
DE (2) DE3408581A1 (da)
DK (1) DK163082C (da)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4812791A (en) * 1986-02-18 1989-03-14 Matsushita Electric Industrial Co. Ltd. Dielectric resonator for microwave band
JPH0529818A (ja) * 1991-07-19 1993-02-05 Matsushita Electric Ind Co Ltd Ｔｅｍモード共振器
US5629266A (en) * 1994-12-02 1997-05-13 Lucent Technologies Inc. Electromagnetic resonator comprised of annular resonant bodies disposed between confinement plates
US5598689A (en) * 1995-05-31 1997-02-04 Bork; Bradley G. Trim mower attachment for riding mowers
US5744957A (en) * 1995-08-15 1998-04-28 Uab Research Foundation Cavity resonator for NMR systems
US7598739B2 (en) * 1999-05-21 2009-10-06 Regents Of The University Of Minnesota Radio frequency gradient, shim and parallel imaging coil
WO2000072033A2 (en) * 1999-05-21 2000-11-30 The General Hospital Corporation Tem resonator for magnetic resonance imaging
AU2001277234A1 (en) * 2000-07-31 2002-02-13 Regents Of The University Of Minnesota Open TEM resonators for MRI
US6894584B2 (en) 2002-08-12 2005-05-17 Isco International, Inc. Thin film resonators
US20050264291A1 (en) * 2004-05-07 2005-12-01 Vaughan J T Multi-current elements for magnetic resonance radio frequency coils

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1020250A (fr) * 1950-06-15 1953-02-03 Csf Perfectionnements aux circuits d'accord à ultra-haute fréquence dits
US2996610A (en) * 1950-08-16 1961-08-15 Matthew J Relis Composite tuned circuit
US2838736A (en) * 1953-03-20 1958-06-10 Erie Resistor Corp High dielectric constant cavity resonator
US2915718A (en) * 1955-08-05 1959-12-01 Itt Microwave transmission lines
US3260972A (en) * 1961-06-07 1966-07-12 Telefunken Patent Microstrip transmission line with a high permeability dielectric
DE1281062B (de) * 1964-07-21 1968-10-24 Siemens Ag Filter fuer sehr kurze elektromagnetische Wellen
JPS6031121B2 (ja) * 1976-09-22 1985-07-20 日本電気株式会社 誘電体共振回路
JPS5349311U (da) * 1976-09-30 1978-04-26
JPS5585101A (en) * 1978-12-22 1980-06-26 Nec Corp Dielectric substance drop-in filter
JPS5823408U (ja) * 1981-08-07 1983-02-14 アルプス電気株式会社 マイクロ波発振器
JPS5836002A (ja) * 1981-08-26 1983-03-02 Nec Corp 共振回路装置
US4435680A (en) * 1981-10-09 1984-03-06 Medical College Of Wisconsin Microwave resonator structure

Also Published As

Publication number Publication date
JPS60206301A (ja) 1985-10-17
DK105785A (da) 1985-09-10
DK163082B (da) 1992-01-13
EP0154703A2 (de) 1985-09-18
JPH0624284B2 (ja) 1994-03-30
DK163082C (da) 1992-06-09
DE3408581A1 (de) 1985-09-12
DE3484930D1 (en) 1991-09-19
EP0154703A3 (en) 1987-06-24
US4742320A (en) 1988-05-03
DK105785D0 (da) 1985-03-07

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