EP0068919B1 - Résonateur hyperfréquence du type condensateur variable à diélectrique - Google Patents

Résonateur hyperfréquence du type condensateur variable à diélectrique Download PDF

Info

Publication number
EP0068919B1
EP0068919B1 EP19820400954 EP82400954A EP0068919B1 EP 0068919 B1 EP0068919 B1 EP 0068919B1 EP 19820400954 EP19820400954 EP 19820400954 EP 82400954 A EP82400954 A EP 82400954A EP 0068919 B1 EP0068919 B1 EP 0068919B1
Authority
EP
European Patent Office
Prior art keywords
hole
cavity
axis
resonator
diver
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
Application number
EP19820400954
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0068919A1 (fr
Inventor
Xavier Delestre
Jean-Claude Curtinot
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.)
Thales SA
Original Assignee
Thomson CSF 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 Thomson CSF SA filed Critical Thomson CSF SA
Publication of EP0068919A1 publication Critical patent/EP0068919A1/fr
Application granted granted Critical
Publication of EP0068919B1 publication Critical patent/EP0068919B1/fr
Expired legal-status Critical Current

Links

Images

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
    • H01P1/201—Filters for transverse electromagnetic waves
    • H01P1/205—Comb or interdigital filters; Cascaded coaxial cavities
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P7/00—Resonators of the waveguide type
    • H01P7/04—Coaxial resonators

Definitions

  • the present invention relates to a microwave resonator of the variable dielectric capacitor type placed in a cavity having a longitudinal axis of symmetry AA, the resonator comprising a first and a second cylindrical part, of the same axis XX perpendicular to the axis AA, coupled respectively with two walls facing the cavity, the first part passing right through the wall to which it is coupled and comprising a plunger whose position relative to the second part is adjustable.
  • Such resonators are known, the first and second parts of which are respectively associated with two walls opposite the cavity to form, for example, with this cavity and other identical resonators, an agile frequency filter, that is to say a filter intended to work in several frequency ranges, or channels and capable of passing quickly from one range or from one channel to another.
  • French patent number 1 046 593 describes one of these resonators using its figure 5.
  • a cavity and a resonator of the variable dielectric capacitor type comprising a first part consisting of a plunger which slides at through a hole drilled directly in a first wall of the cavity, and a second part consisting of a fixed frame disposed on a second wall opposite the first.
  • the plunger comprises a metal rod which is in contact with the cavity in the crossing of the hole; this rod constitutes the movable element of the capacitor.
  • the plunger also comprises, towards the end of the metal rod close to the fixed frame, a layer of dielectric material which constitutes the dielectric of the capacitor.
  • the object of the present invention is to remedy these defects.
  • a resonator of the type indicated at the beginning of this description the first part of which also includes a metal part pierced right through with a cylindrical hole of axis XX and located at a given distance from the second part, and the plunger of which is adjustable by displacement along the axis XX in the hole so that only one end portion of the plunger can come out of the hole in the direction of the second part, is characterized in that at least this end portion is entirely made of dielectric, allowing to modify only the capacitance of the capacitor without modifying the lines of the electric field in the space located between the two armatures of the capacitor.
  • resonators having the appearance of the resonator according to the invention are also known, but are not dielectric resonators and, in these known resonators, the plunger is entirely metallic, so that the problem of contact is poses in the same way as with the known dielectric resonators described above.
  • the figure is a partial view, in section, of an agile frequency filter which shows a resonator according to the invention.
  • the figure represents a portion of a cavity, 1, made in a square guide, of axis of longitudinal symmetry AA.
  • the section plane of the figure is a plane of longitudinal symmetry of the waveguide, parallel to two of the sides of the guide; this section makes it possible to see the internal face of a first side, 12, of the guide as well as the walls 10, 11 which constitute the two sides of the guide perpendicular to the first side 12.
  • a helical spring 25 disposed between the head of the metal part 20 and the head of the rod 21, the role of which is to tend to bring the plunger out of the cavity when by pressure it is pressed towards the interior of the cavity to through hole 24.
  • Part 3 consists of a cylinder of axis XX, fitted at one of its ends in the wall 11 and comprising at the other of its ends a cylindrical hole 30, also of axis XX and of diameter equal to the diameter of the hole 24 of the metal part 20.
  • the rod 21 of the plunger is a metal rod which, like the metal part 20, the cylinder constituting the part 3 and the interior of the cavity, is made of metal. silvery, but the sliding of this rod 21 in the hole with a metal wall 24 poses practically no problem. In fact, this metal rod 21, at the maximum of the depression of the plunger, remains distant from the orifice of the hole 24 in the cavity; this hole 24 is too small for the waves which circulate in the cavity to propagate therein and for the rod 21 to be subjected to an electric field; there are therefore no surface currents at the level of the sliding contact between the plunger and the metallic part 20.
  • the value of the capacity of the resonator according to the invention is not greatly modified by a slight lack of coaxiality between the plunger and the parts 20 and 3, unlike what occurs with all-metal plunger resonators.
  • the invention is not limited to the example described and shown, this is how, for example, the cavity 1 can be produced in a rectangular or round guide and that the rod 22 can be of a diameter just less than that holes 24 and 30.
  • the plunger 21, 22 can be made entirely of dielectric and the metal part 20 can be fixed.
  • the fixed part, 3, of the resonator it may not have a hole such as 30, the adjustment of the plunger 21, 22 being effected by bringing the fixed part closer but without penetration.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
EP19820400954 1981-06-02 1982-05-24 Résonateur hyperfréquence du type condensateur variable à diélectrique Expired EP0068919B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8110899A FR2507018A1 (fr) 1981-06-02 1981-06-02 Resonateur hyperfrequence du type condensateur variable a dielectrique
FR8110899 1981-06-02

Publications (2)

Publication Number Publication Date
EP0068919A1 EP0068919A1 (fr) 1983-01-05
EP0068919B1 true EP0068919B1 (fr) 1986-08-13

Family

ID=9259102

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19820400954 Expired EP0068919B1 (fr) 1981-06-02 1982-05-24 Résonateur hyperfréquence du type condensateur variable à diélectrique

Country Status (3)

Country Link
EP (1) EP0068919B1 (enrdf_load_stackoverflow)
DE (1) DE3272552D1 (enrdf_load_stackoverflow)
FR (1) FR2507018A1 (enrdf_load_stackoverflow)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1192635A (en) * 1983-05-16 1985-08-27 Northern Telecom Limited Microwave cavity tuner
FR2627329B1 (fr) * 1988-02-12 1990-03-23 Alcatel Espace Filtre a resonateur dielectrique
US5968876A (en) * 1997-04-21 1999-10-19 Conductus, Inc. Compressable tuning element for microwave resonators and method of making same
US6147577A (en) * 1998-01-15 2000-11-14 K&L Microwave, Inc. Tunable ceramic filters
DE19917087C2 (de) * 1999-04-15 2001-07-26 Kathrein Werke Kg Hochfrequenzfilter
DE102010056048A1 (de) * 2010-12-23 2012-06-28 Kathrein-Werke Kg Abstimmbares Hochfrequenzfilter
DE102012020979A1 (de) * 2012-10-25 2014-04-30 Kathrein-Werke Kg Abstimmbares Hochfrequenzfilter
DE102012022411A1 (de) * 2012-11-15 2014-05-15 Kathrein-Austria Gmbh Hochfrequenzfilter mit Frequenzstabilisierung
WO2015100597A1 (zh) * 2013-12-31 2015-07-09 华为技术有限公司 一种介质谐振器、介质滤波器及通信设备
WO2016174424A2 (en) * 2015-04-28 2016-11-03 David Rhodes A tuneable microwave filter and a tuneable microwave multiplexer
RU2696817C1 (ru) * 2019-01-09 2019-08-06 Михаил Борисович Гойхман Перестраиваемый полосно-запирающий волноводный фильтр

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1046593A (fr) * 1951-05-11 1953-12-08 Centre Nat Rech Scient Résonateur électromagnétique accordable sur ondes métriques et décimétriques et dispositifs utilisant ce résonateur
DE1223966B (de) * 1959-09-30 1966-09-01 Siemens Ag Hohlleiterbandfilter
US4127834A (en) * 1977-08-29 1978-11-28 Motorola, Inc. Temperature compensating apparatus for microwave oscillators and the like
FR2477783A1 (fr) * 1980-03-04 1981-09-11 Thomson Csf Dispositif d'accord a capacite variable et filtre hyperfrequences accordable comportant au moins un tel dispositif

Also Published As

Publication number Publication date
EP0068919A1 (fr) 1983-01-05
DE3272552D1 (en) 1986-09-18
FR2507018A1 (fr) 1982-12-03
FR2507018B1 (enrdf_load_stackoverflow) 1984-11-09

Similar Documents

Publication Publication Date Title
EP0068919B1 (fr) Résonateur hyperfréquence du type condensateur variable à diélectrique
EP0035922A1 (fr) Dispositif d'accord à capacité variable et filtre hyperfréquences accordable comportant au moins un tel dispositif
EP3129145B1 (fr) Système de pipetage multicanaux comprenant deux chambres d'aspiration imbriquées l'une dans l'autre
FR2583597A1 (fr) Filtre passe-bande hyperfrequences en mode evanescent
FR2516711A1 (fr) Borne de raccordement de fil electrique sans denudage
EP0046098B2 (fr) Résonateur accordable et circuit hyperfréquence comportant au moins un tel résonateur
EP0150648B1 (fr) Multiplicateur de fréquence, pour ondes millimétriques
EP2797161B1 (fr) Filtre hyperfréquence avec élément diélectrique
EP0035440B1 (fr) Dispositif d'accord en hyperfréquences, du type à contacts glissants
EP1655802B1 (fr) Système de compensation en température reglable pour résonateur micro-ondes
FR2755544A1 (fr) Dispositif de filtrage a cavite metallique a inserts dielectriques
EP1607761B1 (fr) Circuit d'alimention multifréquencielle et sonde et spectromètre RMN comportant un tel circuit
FR2496995A1 (fr) Filtre a elimination de bande accordable mecaniquement et circuit comportant un tel filtre
EP0075498A1 (fr) Filtre à cavités, présentant un couplage entre cavités non adjacentes
EP2690702A1 (fr) Filtre accordable en fréquence à résonateur diélectrique
EP1117146B1 (fr) Résonateur, notamment pour filtre hyperfréquence, et filtre le comportant
FR2467489A1 (fr) Cavites de resonance pour micro-ondes
EP2015391A1 (fr) Atténuateur coaxial
FR2655199A1 (fr) Filtre eliminateur de bande pour guide d'ondes hyperfrequences.
FR2589650A1 (fr) Circuit a ligne microbande resonnante
FR3015782A1 (fr) Filtre hyperfrequence passe bande accordable par rotation d'un element dielectrique
FR2519186A1 (fr) Contacteur de faible encombrement a haut niveau d'isolement
EP0346806A1 (fr) Filtre passe-bande à résonateurs diélectriques
WO1986003890A1 (fr) Filtre passe-bande accordable sur un nombre predetermine de frequences discretes reparties dans une large bande de frequences
EP0078486A1 (fr) Filtre hyperfréquence stabilisé en température

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): DE GB IT NL

17P Request for examination filed

Effective date: 19830510

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE GB IT NL

REF Corresponds to:

Ref document number: 3272552

Country of ref document: DE

Date of ref document: 19860918

ITF It: translation for a ep patent filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19900418

Year of fee payment: 9

ITTA It: last paid annual fee
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19900531

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19900626

Year of fee payment: 9

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19910524

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19911201

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee
GBPC Gb: european patent ceased through non-payment of renewal fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19920303