EP0392417A1 - Dielektrisches Resonatorfilter - Google Patents

Dielektrisches Resonatorfilter Download PDF

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Publication number
EP0392417A1
EP0392417A1 EP90106746A EP90106746A EP0392417A1 EP 0392417 A1 EP0392417 A1 EP 0392417A1 EP 90106746 A EP90106746 A EP 90106746A EP 90106746 A EP90106746 A EP 90106746A EP 0392417 A1 EP0392417 A1 EP 0392417A1
Authority
EP
European Patent Office
Prior art keywords
cavity
resonator
filter according
filter
dielectric resonator
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
EP90106746A
Other languages
English (en)
French (fr)
Other versions
EP0392417B1 (de
Inventor
Jean Michel Gueble
Bernard Theron
Yannick Latouche
Bernard Ducrocq
Bernard Perez
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.)
Alcatel Espace Industries SA
Original Assignee
Alcatel Espace Industries 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 Alcatel Espace Industries SA filed Critical Alcatel Espace Industries SA
Publication of EP0392417A1 publication Critical patent/EP0392417A1/de
Application granted granted Critical
Publication of EP0392417B1 publication Critical patent/EP0392417B1/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
    • H01P1/20—Frequency-selective devices, e.g. filters
    • H01P1/207—Hollow waveguide filters
    • H01P1/208—Cascaded cavities; Cascaded resonators inside a hollow waveguide structure
    • H01P1/2084—Cascaded cavities; Cascaded resonators inside a hollow waveguide structure with dielectric resonators

Definitions

  • the invention relates to a dielectric resonator filter.
  • Such a filter is based on the following principles: - Use of the modes of the shielded dielectric resonator. - Reuse of conventional methods of excitation and coupling of modes, in particular thanks to adjustment screws acting on the electric field.
  • European patent application No. 0 064 799 describes a ceramic resonator element arranged in a cavity to form a composite microwave resonator.
  • Two tuning screws, located in the cavity along orthogonal axes, make it possible to achieve the tuning of the assembly along these axes, at frequencies close to the fundamental resonance frequency of the resonator element.
  • Several cavities of this type can be assembled to form a filter using several transverse partitions.
  • each cavity can then be carried out using simple slots, two cross-shaped slots or using circular iris.
  • an adjustment screw is positioned along an axis of 45 ° relative to the orthogonal tuning screws so that the resonance along one of the orthogonal axes is coupled to the resonance along the other axis.
  • - low-loss insulating materials in the form of a column or cushion polystyrene or PTFE (polytetrafluoroethylene), foam.
  • the invention while making it possible to optimize the response curves of filters with dielectric resonators in a band close to resonance and in wide band, aims to resolve the various questions raised for the production of these filters.
  • a dielectric resonator filter comprising at least one cylindrical cavity inside which there is a dielectric resonator whose axis of symmetry is collinear with that of said cavity, characterized in that the resonator is maintained by a system of two cups.
  • this resonator is a cylindrical resonator having a symmetrical longitudinal position inside the cavity.
  • Such a filter has many advantages, namely: it allows a sufficient frequency difference between the HEM mode 1, 2, ⁇ , for example, and the other modes so as to obtain a fairly wide free band of parasitic modes, - it allows filters with more than dual-mode structure to be produced.
  • the invention relates to a dielectric resonator filter in which: - The resonator is held by a cup system resting on the internal wall of the cavity on a small sidewalk on one side and using four needle screws resting on a conical part of the upper cup. This keeps the resonator in operation differential expansions.
  • this cup system can be produced by two cylindrical parts:
  • the system is made of dielectric material, the cavity is of silver aluminum.
  • Such characteristics allow: - optimize the overvoltage coefficient (no lossy material in critical areas), - to obtain a temperature stability coefficient of around 1 ppm / ° C (ppm or parts per million), which is compensable by using a dielectric resonator at -1 ppm / ° C.
  • the resonator filter according to the invention is formed by a cylindrical cavity 10 inside which there is a dielectric resonator 11, for example of shape cylindrical, whose axis of symmetry ⁇ is collinear with that of said cavity 10.
  • This resonator 11 has, here, a symmetrical position inside the cavity 10.
  • This cavity 10 can moreover be closed, if necessary, by two irises.
  • the resonator 11 is held in the cavity 10 by a system with dimpled cups 15 and 16. As shown in FIG. 1, the first cup 15 is mounted in abutment on a sidewalk 12 produced in the internal wall of the cavity 10; the bearing surfaces of this cup 15 on this sidewalk 12 of the cavity 10 are limited to lugs 17 whose machining is precise. The resonator 11 is placed in abutment on four bearing surfaces 18 produced in the inner part of the cup 15 which hold it in the axis ⁇ of the cavity 10, in a symmetrical position.
  • the second cup 16 whose shape is very close to that of the first cup 15 has the same four bearing surfaces 18 at the level of the resonator 11; it is distinguished by its conical bearing 19 on which needle screws 20 which pass through the cavity 10 come to bear and which, by their contact, keep the resonator 11 in the cavity 10.
  • the compensation for thermal expansion of the materials is ensured by the elasticity of the cups 15 and 16, taking into account the fact that a prestressing is applied to them at the time of assembly.
  • the filter of the invention meets the following characteristics: -
  • the resonator 11 is held by a cup system 15 and 16, the applied stress is determined to hold accelerations up to 30 g and significant thermal stresses.
  • This prestress is applied using the tool, illustrated in FIG. 2, which is formed by a frame 27, 28, 29 to which a guide 25 is fixed.
  • a finger 22 transmits a force given by a spring 24, trapped in the guide 25, to the upper cup 16 by the wedge 21.
  • the spring is compressed according to the number of turns of the arm 26.
  • a calibration of the tool gives the correspondence: number of turns ⁇ -> effort.
  • the needle screws 20 are then positioned in abutment on the conical surface 19 of the second cup 16 before raising the finger 22.

Landscapes

  • Control Of Motors That Do Not Use Commutators (AREA)
EP90106746A 1989-04-13 1990-04-09 Dielektrisches Resonatorfilter Expired - Lifetime EP0392417B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8904906 1989-04-13
FR8904906A FR2646022B1 (fr) 1989-04-13 1989-04-13 Filtre a resonateur dielectrique

Publications (2)

Publication Number Publication Date
EP0392417A1 true EP0392417A1 (de) 1990-10-17
EP0392417B1 EP0392417B1 (de) 1994-12-07

Family

ID=9380694

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90106746A Expired - Lifetime EP0392417B1 (de) 1989-04-13 1990-04-09 Dielektrisches Resonatorfilter

Country Status (6)

Country Link
US (1) US5027090A (de)
EP (1) EP0392417B1 (de)
JP (1) JPH02306701A (de)
CA (1) CA2014514C (de)
DE (1) DE69014693T2 (de)
FR (1) FR2646022B1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0615302A1 (de) * 1993-03-12 1994-09-14 Matra Marconi Space Uk Limited Dielektrisches Resonatorfilter
EP0678928A2 (de) * 1994-04-22 1995-10-25 Matra Marconi Space Uk Limited Dielektrisches Resonatorfilter

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI88228C (fi) * 1991-05-09 1993-04-13 Telenokia Oy Dielektrisk resonatorkonstruktion
US5323129A (en) * 1992-01-10 1994-06-21 Gardiner Communications Corporation Resonator mounting apparatus
GB2276040A (en) * 1993-03-12 1994-09-14 Matra Marconi Space Uk Ltd Dielectric resonator demultiplexer
DE4316334A1 (de) * 1993-05-15 1994-11-17 Forschungsgesellschaft Fuer In Dielektrischer Resonator
US5652556A (en) * 1994-05-05 1997-07-29 Hewlett-Packard Company Whispering gallery-type dielectric resonator with increased resonant frequency spacing, improved temperature stability, and reduced microphony
US5517203A (en) * 1994-05-11 1996-05-14 Space Systems/Loral, Inc. Dielectric resonator filter with coupling ring and antenna system formed therefrom
FR2734084B1 (fr) * 1995-05-12 1997-06-13 Alcatel Espace Resonateur dielectrique pour filtre hyperfrequence, et filtre comportant un tel resonateur
DE19524633A1 (de) * 1995-07-06 1997-01-09 Bosch Gmbh Robert Wellenleiter-Resonatoranordnung sowie Verwendung
US5698986A (en) * 1996-02-12 1997-12-16 Allen-Bradley Company, Inc. Cigarette density monitor
US6002311A (en) * 1997-10-23 1999-12-14 Allgon Ab Dielectric TM mode resonator for RF filters
US6535087B1 (en) 2000-08-29 2003-03-18 Com Dev Limited Microwave resonator having an external temperature compensator
US6459346B1 (en) 2000-08-29 2002-10-01 Com Dev Limited Side-coupled microwave filter with circumferentially-spaced irises
US6538536B1 (en) * 2000-09-27 2003-03-25 Motorola, Inc. Dielectric resonator oscillator and methods of assembly therefor
US6476686B1 (en) * 2001-09-21 2002-11-05 Space Systems/Loral, Inc. Dielectric resonator equalizer
DE10310862A1 (de) * 2003-03-11 2004-09-23 Tesat-Spacecom Gmbh & Co. Kg Verfahren und Anordnung zur Temperaturkompensierung an Rundresonatoren
CN1581569A (zh) * 2003-08-04 2005-02-16 松下电器产业株式会社 介质谐振器、介质过滤器、以及支撑介质谐振元件的方法
CN103035980B (zh) * 2011-09-30 2015-09-09 深圳市大富科技股份有限公司 介质滤波器及其安装方法、弹性片和通信射频器件

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1591362A1 (de) * 1967-04-21 1970-12-23 Philips Patentverwaltung Koaxialleitungsstuetze fuer starre und flexible Hochfrequenzleitungen
DE2047229A1 (de) * 1969-12-11 1971-06-16 Gen Electric And English Elect Mikrowellenbauelement
GB1520473A (en) * 1974-09-06 1978-08-09 Murata Manufacturing Co Dielectric resonator and microwave filter using the same
EP0173545A2 (de) * 1984-08-21 1986-03-05 The University Of Western Australia Mit einem Kristallblock aus Aluminiumoxyd belasteter Hohlraumresonator
US4667172A (en) * 1986-04-07 1987-05-19 Motorola, Inc. Ceramic transmitter combiner with variable electrical length tuning stub and coupling loop interface

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3562665A (en) * 1969-05-20 1971-02-09 Rca Corp Microwave oscillator including two bulk negative resistance devices in a three-terminal cavity
US4661790A (en) * 1983-12-19 1987-04-28 Motorola, Inc. Radio frequency filter having a temperature compensated ceramic resonator
US4563661A (en) * 1984-12-26 1986-01-07 At&T Bell Laboratories Dielectric for microwave applications
JPS61251202A (ja) * 1985-04-27 1986-11-08 Fujitsu Ltd 誘電体フイルタ
US4646038A (en) * 1986-04-07 1987-02-24 Motorola, Inc. Ceramic resonator filter with electromagnetic shielding
SU1427443A1 (ru) * 1987-04-08 1988-09-30 Предприятие П/Я А-3650 Фильтр
US4942377A (en) * 1987-05-29 1990-07-17 Murata Manufacturing Co., Ltd. Rod type dielectric resonating device with coupling plates
FR2627329B1 (fr) * 1988-02-12 1990-03-23 Alcatel Espace Filtre a resonateur dielectrique

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1591362A1 (de) * 1967-04-21 1970-12-23 Philips Patentverwaltung Koaxialleitungsstuetze fuer starre und flexible Hochfrequenzleitungen
DE2047229A1 (de) * 1969-12-11 1971-06-16 Gen Electric And English Elect Mikrowellenbauelement
GB1520473A (en) * 1974-09-06 1978-08-09 Murata Manufacturing Co Dielectric resonator and microwave filter using the same
EP0173545A2 (de) * 1984-08-21 1986-03-05 The University Of Western Australia Mit einem Kristallblock aus Aluminiumoxyd belasteter Hohlraumresonator
US4667172A (en) * 1986-04-07 1987-05-19 Motorola, Inc. Ceramic transmitter combiner with variable electrical length tuning stub and coupling loop interface

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
1982 IEEE MTT-S INTERNATIONAL MICROWAVE SYMPOSIUM DIGEST, Dallas, Texas, 15-17 juin 1982, pages 386-388, IEEE, New York, US; S.J. FIEDZIUSZKO et al.: "Miniature filters and equalizers utilizing dual mode dielectric resonator loaded cavities" *
PATENT ABSTRACTS OF JAPAN, vol. 11, no. 99 (E-493)[2546], 27 mars 1987; & JP-A-61 251 202 (FUJITSU LTD) 08-11-1986 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0615302A1 (de) * 1993-03-12 1994-09-14 Matra Marconi Space Uk Limited Dielektrisches Resonatorfilter
EP0678928A2 (de) * 1994-04-22 1995-10-25 Matra Marconi Space Uk Limited Dielektrisches Resonatorfilter
EP0678928A3 (de) * 1994-04-22 1995-12-06 Matra Marconi Space Uk Ltd

Also Published As

Publication number Publication date
FR2646022A1 (fr) 1990-10-19
CA2014514C (fr) 1993-11-30
DE69014693T2 (de) 1995-04-27
CA2014514A1 (fr) 1990-10-13
DE69014693D1 (de) 1995-01-19
US5027090A (en) 1991-06-25
FR2646022B1 (fr) 1991-06-07
JPH02306701A (ja) 1990-12-20
EP0392417B1 (de) 1994-12-07

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