EP0973227B1 - Résonateur annulaire à double mode - Google Patents

Résonateur annulaire à double mode Download PDF

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Publication number
EP0973227B1
EP0973227B1 EP99105634A EP99105634A EP0973227B1 EP 0973227 B1 EP0973227 B1 EP 0973227B1 EP 99105634 A EP99105634 A EP 99105634A EP 99105634 A EP99105634 A EP 99105634A EP 0973227 B1 EP0973227 B1 EP 0973227B1
Authority
EP
European Patent Office
Prior art keywords
ring
conductor
line
resonator
dual
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
EP99105634A
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German (de)
English (en)
Other versions
EP0973227A2 (fr
EP0973227A3 (fr
Inventor
Martin Schallner
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.)
Ericsson AB
Original Assignee
Ericsson AB
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Filing date
Publication date
Application filed by Ericsson AB filed Critical Ericsson AB
Publication of EP0973227A2 publication Critical patent/EP0973227A2/fr
Publication of EP0973227A3 publication Critical patent/EP0973227A3/fr
Application granted granted Critical
Publication of EP0973227B1 publication Critical patent/EP0973227B1/fr
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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 present invention relates to a dual-mode ring resonator, which is arranged as a planar line ring on a substrate to which an input and an output line are coupled, according to the features of the preamble of claim 1.
  • a dual-mode ring resonator is known from EP 0 844 682 A1 known.
  • Dual-mode ring resonators in which two degenerate resonant modes are excited on one line ring, are made of " EXPERIMENTAL INVESTIGATION OF DUAL MODE MICROSTRIP RING RESONATORS ", 20th European Microwave Conference 1990, pages 901-906 and from IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, Vol. 5, May 1996, pages 723-729 known.
  • Such dual-mode ring resonators are used, for example, as band-pass filters, which should have the lowest possible transmission attenuation in their passband and the highest possible stopband attenuation in their stopband.
  • a relatively small transition region between the transmission and blocking regions is desirable; That is, it is a band-pass filter to realize, which has as steep a filter edge between fürlledge- - and blocking area.
  • a filter characteristic with steep edges can be realized with the help of a dual-mode ring resonator, because this type of resonator Sperrpole in the field of Filter edges generated.
  • the known dual-mode resonators are usually operated at their fundamental frequency. Such a fundamental frequency operation is present when the length of the line ring corresponds approximately to the simple wavelength of the desired resonance frequency.
  • the required for the basic frequency operation relatively short length of the line ring has a small bending radius of the line ring result, resulting in a higher emission of electromagnetic energy.
  • the burden of the coupling of the input and output line is very high. These properties greatly reduce the quality of the filter. A further reduction of the filter quality is due to the fact that for coupling between the two modes inhomogeneities are required on the line ring, as can be seen from the above cited documents.
  • the resonant frequency depends strongly on the distance of the ring resonator from the lid of a housing in which the microwave circuit is housed with the ring resonator from. By varying the distance of the housing cover from the ring resonator - caused by thermal expansion of the housing or by mechanical vibrations - the resonance frequency is subject to undesirable changes.
  • the invention has for its object to provide a dual-mode ring resonator of the type mentioned, which has the highest possible Resonatorgüte and thus a low attenuation in the passband.
  • the conduit ring has the shape of a square with rounded corners and that the length of the Line ring is dimensioned so that the resonator is operated at one of its odd harmonics.
  • the length of the line ring can be twice, four times, six times, ... as long as if it were operated at its fundamental.
  • the bending radius of the line ring is larger overall, and the coupling of the input and output line loads the resonator less, which significantly reduces its radiation. As a result, its quality increases, and the distance between the ring resonator and the housing cover has less effect on the resonant frequency.
  • the larger dimension of the pipe ring also has the advantage that it is less sensitive to manufacturing tolerances.
  • the input and the output line are coupled to opposite, straight line sections of the line ring.
  • the position of the poles above and below the passband on the filter edges can be set in the desired manner.
  • the input and the output line may have line tapers or widening whose length and width are dimensioned so that the lines are coupled to the line ring with as little reflection as possible.
  • the single figure shows a dual-mode ring resonator to be operated at one of its odd harmonics. It consists of a line ring 1, which has a double, four times, six times, ... as long as a ring resonator, which is operated at its fundamental frequency because of the harmonic operation.
  • the conduit ring 1 has a square shape, with its four corners 2, 3, 4 and 5 are rounded. By this square shape with the rounded corners 2, 3, 4 and 5 of the line ring 1, the known additional inhomogeneities for coupling between the two modes on the line ring can be omitted. The absence of inhomogeneities reduces the radiation of the line ring and thus increases the quality of the ring resonator.
  • an input line 8 and an output line 9 are coupled, which are designed as the line ring 1 in stripline technology.
  • the coupling of the input and output line 8 and 9 to the line ring 1 is predominantly inductive.
  • the degree of inductive coupling which is determined by the distance of the input and output line 8, 9 with respect to the line sections 6 and 7 of the line ring 1, has an influence on the position of the poles above and below the passband in the region of the filter edges.
  • About the coupling of the input and output line 8 and 9 to the line ring 1 can thus be set in a simple manner, a desired position of the poles.
  • the input line 8 and the output line 9 are each provided with a line taper 10, 11.
  • a line taper 10 By suitable choice of the length and width of the line tapers 10 and 11, the coupling of the input and output line 8, 9 to make the line ring 1 very low reflection.
  • a line broadening may be required, as indicated by the dashed lines in the drawing.
  • the line ring 1 and the input line 8 and output line 9 coupled thereto are applied, for example, to an AL 2 O 3 ceramic substrate 12 whose thickness is 0.381 mm. Both the line ring 1 and the input and output lines 8 and 9 have a conductor width of 0.34 mm. At a resonance frequency of 19 GHz, the average line length of the line ring 1 is about 10.6 mm, the line tapers 10, 11 are about 1.1 mm long and about 0.05 mm wide, and the coupling distance between the input and Output line 8, 9 and the line ring 1 is about 0.13 mm.

Landscapes

  • Control Of Motors That Do Not Use Commutators (AREA)

Claims (4)

  1. Résonateur annulaire à double mode, qui est agencé sous forme d'un anneau conducteur planaire (1) sur un substrat (12) et auquel sont accouplées une ligne d'entrée et une ligne de sortie (8, 9), l'anneau conducteur (1) ayant la forme d'un carré avec des coins arrondis (2, 3, 4, 5), caractérisé en ce que la longueur de l'anneau conducteur (1) est dimensionnée de telle façon que le résonateur fonctionne à l'une de ses ondes harmoniques d'ordre impair, la longueur de l'anneau conducteur (1) étant n fois plus longue que si le résonateur fonctionnait à son onde de base, n étant égal à 2, 4, 6,...
  2. Résonateur annulaire à double mode selon la revendication 1, caractérisé en ce que la ligne d'entrée (8) et la ligne de sortie (9) sont couplées au niveau de tronçons conducteurs (6, 7) opposés à tracé rectiligne de l'anneau conducteur (1).
  3. Résonateur annulaire à double mode selon la revendication 1 ou 2, caractérisé en ce que la ligne d'entrée (8) et la ligne de sortie (9) sont couplées de manière inductive à l'anneau conducteur (1).
  4. Résonateur annulaire à double mode selon la revendication 1 ou 2, caractérisé en ce que la ligne d'entrée (8) et la ligne de sortie (9) présentent des rétrécissements (10, 11) ou des élargissements, dont la longueur et la largeur sont dimensionnées de telle façon que les lignes (8, 9) sont couplées à l'anneau conducteur (1) d'une manière aussi exemple que possible de réflexions.
EP99105634A 1998-07-11 1999-03-19 Résonateur annulaire à double mode Expired - Lifetime EP0973227B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19831161 1998-07-11
DE19831161A DE19831161A1 (de) 1998-07-11 1998-07-11 Dual-Mode Ringresonator

Publications (3)

Publication Number Publication Date
EP0973227A2 EP0973227A2 (fr) 2000-01-19
EP0973227A3 EP0973227A3 (fr) 2001-07-18
EP0973227B1 true EP0973227B1 (fr) 2008-01-23

Family

ID=7873765

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99105634A Expired - Lifetime EP0973227B1 (fr) 1998-07-11 1999-03-19 Résonateur annulaire à double mode

Country Status (3)

Country Link
US (1) US6218915B1 (fr)
EP (1) EP0973227B1 (fr)
DE (2) DE19831161A1 (fr)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6026311A (en) * 1993-05-28 2000-02-15 Superconductor Technologies, Inc. High temperature superconducting structures and methods for high Q, reduced intermodulation resonators and filters
US7231238B2 (en) * 1989-01-13 2007-06-12 Superconductor Technologies, Inc. High temperature spiral snake superconducting resonator having wider runs with higher current density
RU2249299C2 (ru) * 1999-11-02 2005-03-27 Ета Са Фабрик Д`Эбош Система отсчета времени, содержащая интегрированный микромеханический кольцевой резонатор
JP3395754B2 (ja) 2000-02-24 2003-04-14 株式会社村田製作所 デュアルモード・バンドパスフィルタ
JP3587139B2 (ja) * 2000-07-12 2004-11-10 株式会社村田製作所 デュアルモード・バンドパスフィルタ
JP3647806B2 (ja) * 2001-12-26 2005-05-18 松下電器産業株式会社 Ａ／ｄ変換器、ａ／ｄ変換方法および信号処理装置
US20040091392A1 (en) * 2002-08-09 2004-05-13 Mcbride Sterling Eduard Method and apparatus for employing a tunable microfluidic device for optical switching, filtering and assaying of biological samples
AU2003304652A1 (en) * 2003-09-30 2005-05-11 Pirelli And C. S.P.A. Dual mode planar filter based on smoothed contour resonators
US7205867B2 (en) * 2005-05-19 2007-04-17 Robert Bosch Gmbh Microelectromechanical resonator structure, and method of designing, operating and using same
US7227432B2 (en) * 2005-06-30 2007-06-05 Robert Bosch Gmbh MEMS resonator array structure and method of operating and using same
TWI285022B (en) * 2005-12-23 2007-08-01 Hon Hai Prec Ind Co Ltd Band-pass filter
WO2017091795A1 (fr) * 2015-11-25 2017-06-01 New York University Microrésonateurs en boucle fermée présentant des parties linéaires et des angles arrondis
CN109546272B (zh) * 2018-11-01 2020-08-04 西安电子科技大学 一种双频差分带通滤波器

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4048589A (en) * 1975-06-30 1977-09-13 Epsilon Lambda Electronics Corporation Receiver module and components thereof
US5172084A (en) * 1991-12-18 1992-12-15 Space Systems/Loral, Inc. Miniature planar filters based on dual mode resonators of circular symmetry
DE69332249T2 (de) * 1992-04-30 2003-04-10 Matsushita Electric Industrial Co., Ltd. Schleifenförmiger Zweifachmodus-Streifenresonator zum Mitschwingenlassen von Mikrowellen in zwei Moden und Bandpassfilter mit den Resonatoren
US5400002A (en) * 1992-06-12 1995-03-21 Matsushita Electric Industrial Co., Ltd. Strip dual mode filter in which a resonance width of a microwave is adjusted and dual mode multistage filter in which the strip dual mode filters are arranged in series
EP0844682B1 (fr) * 1993-10-04 2001-06-20 Matsushita Electric Industrial Co., Ltd. Filtre du type ligne à bande planaire et résonateur bi-mode
JPH0856107A (ja) * 1994-08-11 1996-02-27 Matsushita Electric Ind Co Ltd デュアルモード共振器

Also Published As

Publication number Publication date
DE59914617D1 (de) 2008-03-13
US6218915B1 (en) 2001-04-17
DE19831161A1 (de) 2000-01-27
EP0973227A2 (fr) 2000-01-19
EP0973227A3 (fr) 2001-07-18

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