EP1655802A1 - Regelbares temperaturkompensiertes System für Mikrowellenresonatoren - Google Patents

Regelbares temperaturkompensiertes System für Mikrowellenresonatoren Download PDF

Info

Publication number: EP1655802A1
Authority: EP; European Patent Office
Prior art keywords: cavity; temperature compensation; screw; microwave resonator; bars
Prior art date: 2004-11-09
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

EP05110380A

Other languages

English (en)

French (fr)

Other versions

EP1655802B1 (de

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

Alcatel SA

Nokia Inc

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.)

2004-11-09

Filing date

2005-11-04

Publication date

2006-05-10

2005-11-04 Application filed by Alcatel SA, Nokia Inc filed Critical Alcatel SA

2006-05-10 Publication of EP1655802A1 publication Critical patent/EP1655802A1/de

2009-10-14 Application granted granted Critical

2009-10-14 Publication of EP1655802B1 publication Critical patent/EP1655802B1/de

Status Active legal-status Critical Current

2025-11-04 Anticipated expiration legal-status Critical

Images

Classifications

- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P7/00—Resonators of the waveguide type
- H01P7/06—Cavity resonators

Definitions

the invention relates to microwave resonators that are generally used in the field of terrestrial or space communications.
a microwave resonator is an electromagnetic circuit tuned to pass energy at a specific resonant frequency.
Microwave resonators can be used to make filters to reject the frequencies of a signal outside the filter bandwidth.
a resonator is in the form of a structure forming a cavity called resonant cavity whose dimensions are defined to obtain the desired resonance frequency.
any change in the dimensions of the cavity introducing a change in volume of the latter causes an offset of its resonant frequency and therefore a change in the bandwidth of the filter.
the changes in size of a resonant cavity may be due to expansion or contraction of the walls of the cavity caused by changes in temperature, all the more important as the material has a high rate of thermal expansion.
a first material with a very low thermal expansion rate such as Invar (registered mark) is used.
the second material used is generally aluminum, a material that has a higher thermal expansion rate than the Invar but which in addition has, in addition to its low density and therefore its lightness, a high heat dissipation power, making it particularly suitable for space applications.
each temperature compensation device must have dimensions adapted to the length of the resonant cavity with which it is associated or of which it forms part. Temperature compensation devices must be made with dimensions adapted to each cavity of different length.
the present invention solves this problem by proposing a system adapted equally well to cavities of the same length as to cavities of different lengths.
the proposed invention also makes it possible to propose a temperature compensation system that confers on the resonator a high temperature stability obtained by the adjustment device of said system.
the present invention relates to a device comprising a microwave resonator provided with at least one cavity having a predefined resonance frequency, the device also comprising a temperature compensation system made of a material with a very low thermal expansion rate. relative to that of the material in which the cavity is made, mainly characterized in that the temperature compensation system comprises a structure making it possible to counteract the effects induced on the resonator by temperature variations so that the resonance frequency of the cavity remains within a predetermined range, this device being also characterized and in that it comprises a device for adjusting the temperature compensation suitable for modify the volume of the cavity to set the value of the resonant frequency to its predefined value.
the temperature compensation system and the temperature compensation adjustment device are coupled to each other and coupled to the resonator so as to exert forces on the cavity cover, along an axis corresponding to the axis.
longitudinal of the cavity the latter comprising a cylindrical wall having a longitudinal axis and two opposite ends, one of which is closed by the deformable cover.
the cover comprises a base closing one end of the cavity and a rod adjoining the base and extending out of the cavity along the longitudinal axis of the latter, so that the device adjustment of the compensation is arranged around this rod, this device being constituted by a constituent element of the temperature compensation system, said element being made of a very low thermal expansion rate material.
the compensation adjustment device is produced by means of a hollow-axis screw inside which the cap rod passes, the screw comprising a thread on its outer wall.
the temperature compensation system comprises two bars made of a material having a very low thermal expansion rate, these bars are arranged diametrically opposite around the cavity and the cavity has two fins on each of which is fixed one of the bars.
the bars are located on either side of the base of the cover and are coupled to each other above this base by means of a stirrup provided with a threaded passage for the hollow-axis screw and the stem of the cover passing through the screw.
the compensation adjustment device comprises a counter nut screwed above the stirrup around the screw.
the wall forming the cavity of the resonator and its fins is made of aluminum and the compensation adjustment screw is made in invar.
the device 1 illustrated in FIG. 1 comprises at least one microwave resonator 10, a temperature compensation system 20 for this resonator and a compensation adjustment device 40.
the temperature compensation system comprises the compensation adjusting device 40.
the compensation system 20 makes it possible to compensate for the volume variations of the cavity of the resonator induced by an increase in temperature by modifying the volume of this cavity so that the resonant frequency of the cavity remains within a predetermined range.
the adjustment system makes it possible to make a correction of the volume of the cavity by increasing or decreasing it when the compensation is not sufficient in order to obtain a cavity whose resonance frequency corresponds to the predefined resonant frequency, i.e. the resonant frequency of the cavity when operating under normal temperature conditions.
the temperature compensation and adjustment system proposed according to the invention thus makes it possible to maintain the resonant frequency of a resonator despite the temperature variations to which it can be subjected and this, even if the cavities of the resonators have lengths slightly different (of the order of mm or a few mm).
this system gives the resonator a high temperature stability thanks to the adjustment device.
the resonator 10 illustrated in FIG. 1 is in the form of a cylindrical cavity 11 provided with a bottom 111 that can be coupled to another cavity 2 and a hood 112.
the hood 112 has a cylindrical base 113 fixed to the cavity, extending by a rod 114 of smaller diameter, this rod being located in the longitudinal axis of the cavity. 11.
the cavity 11 has on its outer wall two diametrically opposed fins 115 and 116, extending substantially over three quarters of its height taken in its upper part that is to say in the direction of the hood.
bars 21 and 22 made of a material with a very low rate of thermal expansion.
the bars extend on either side of the base of the cover 113 parallel to its longitudinal axis, that is to say to its rod 114.
the two bars are fixed at their upper end to a stirrup 30 having a portion 32, fitting the end of the bars 21 and 22 and a transverse portion 33 extending between the bars and having a passage 34 for the rod 114 of the hood, thus encircling the latter through the clamping element 40 of the constituent rod of the temperature compensation system.
This element 40 is made of a material with a very low rate of thermal expansion. All of these elements make it possible to obtain temperature compensation.
the bars are positioned on either side of the plane of the hood base 113, which is taken as a reference plane with respect to the deformations that the hood may undergo under the effect of the temperature compensation system and the system. setting this compensation.
the device for adjusting the temperature compensation comprises the clamping element 40.
This element 40 is formed for this purpose in the form of a screw 40 having a hollow shaft of diameter adapted to the diameter of the rod 114 so as to be placed around the stem.
the screw enters the threaded passage 34 of the ring 30.
the screw 40 is threaded on its outer wall, its inner wall is smooth.
the rod 114 is smooth, the mounting between the rod 114 and the screw 40 is slippery, the connection between the two elements is by pinching (adhesion) of the screw 40 on the rod 114 with the screws 62 and 63 housed in the head 41 of the screw.
the screw 40 can thus be mounted or lowered around the rod 114.
a counter nut 50 is placed above the passage formed in the stirrup 30 to fix the position of the screw when the latter is adjusted.
the head 41 of the screw 40 is split and forms several parts with elasticity which when tightened cause a pinch of the rod 114.
the head 41 of the screw comprises two recesses diametrically opposite to the axis of the rod 114 for the passage of the two screws 62 and 63 disposed in opposition to ensure the tightening of the parts of this head around the rod 114.
the bars 21, 22 and the screw 40 are in a very low thermal expansion material material such as Invar®.
the resonator 10, namely the cavity 11, its fins 115, 116 and the cover 112 are made of a material having a high thermal dissipation capacity, such as aluminum, but with a thermal expansion rate greater than that of the bars 21 and 22 and the screw 40.
the temperature compensation system comprises the two bars connected to the cavity and also to the hood via the stirrup and the screw.
the position of the screw 40 is adjusted after resonance frequency measurements made under the actual operating conditions of the resonator, that is to say after having subjected the resonator to the temperatures in which it will be made to operate.
the resonant frequency remains within a predetermined range of values.
the compensation is then adjusted by screwing or unscrewing the screw 40 so as to bring the resonance frequency to the predefined value.
the adjustment device 40 provides a latitude of about +/- 10% over the nominal compensation exerted by the bars and the screw, this latitude is obtained by adjusting the position of the screw.
FIG. 2 illustrates an overview of a device according to the invention.
the resonator comprises two resonant cavities which are coupled and carry respectively the references 10 and 90.
Each resonant cavity is equipped with a temperature compensation system 20 and a compensation adjustment device 40 in accordance with the present invention. invention.
the entrance of signal is visible on the cavity 90 and bears the reference 91.
the clamping screws 62, 63 of the rod 114 are visible in this figure and in FIG. Figure 3 illustrates the conformation of the head 41 of the screw 40 of compensation adjustment.

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Control Of Motors That Do Not Use Commutators (AREA)

EP05110380A 2004-11-09 2005-11-04 Regelbares temperaturkompensiertes System für Mikrowellenresonatoren Active EP1655802B1 (de)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
FR0452568A FR2877773B1 (fr)	2004-11-09	2004-11-09	Systeme de compensation en temperature reglable pour resonateur micro-ondes

Publications (2)

Publication Number	Publication Date
EP1655802A1 true EP1655802A1 (de)	2006-05-10
EP1655802B1 EP1655802B1 (de)	2009-10-14

Family

ID=34954713

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP05110380A Active EP1655802B1 (de)	2004-11-09	2005-11-04	Regelbares temperaturkompensiertes System für Mikrowellenresonatoren

Country Status (8)

Country	Link
US (1)	US7453337B2 (de)
EP (1)	EP1655802B1 (de)
CN (1)	CN1812188B (de)
AT (1)	ATE445920T1 (de)
CA (1)	CA2523371C (de)
DE (1)	DE602005017108D1 (de)
ES (1)	ES2334038T3 (de)
FR (1)	FR2877773B1 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US7564327B2 (en)	2006-10-05	2009-07-21	Com Dev International Ltd.	Thermal expansion compensation assemblies
JP2010268459A (ja) *	2009-05-15	2010-11-25	Thales	温度補償技術が適用されたフィルタおよびマルチプレクサ用の多重膜可撓性壁システム
CN101329003B (zh) *	2007-06-22	2011-09-28	泰勒斯公司	用于相位稳定波导管的机械式温度补偿设备
CN104347919A (zh) *	2013-08-08	2015-02-11	北京飞卡科技有限公司	一种用于微波滤波器的温度补偿装置及其温度补偿方法

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE102005001298A1 (de) *	2005-01-03	2006-07-13	Hydac Electronic Gmbh	Vorrichtung zum Messen von Kräften, insbesondere Drucksensor, und zugehöriges Herstellverfahren
FR2965668B1 (fr) *	2010-10-01	2013-05-10	Thales Sa	Filtre hyperfrequence a resonateur dielectrique
FR3005209B1 (fr)	2013-04-26	2015-04-10	Thales Sa	Filtre hyperfrequence avec element dielectrique
WO2016113999A1 (ja) *	2015-01-13	2016-07-21	日本電業工作株式会社	共振器及びフィルタ
CN112164883B (zh) *	2020-08-21	2022-09-23	西安空间无线电技术研究所	一种温变环境下保持次层间压力的分层式馈电结构

Citations (4)

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Publication number	Priority date	Publication date	Assignee	Title
US2998582A (en) *	1958-01-17	1961-08-29	Henry J Riblet	Temperature compensated microwave cavity
US4706053A (en) *	1985-07-29	1987-11-10	Gte Telecommunicazioni, S.P.A.	Microwave metallic cavity
EP1187247A2 (de) *	2000-08-29	2002-03-13	Com Dev Ltd.	Mikrowellenresonator mit externem Temperaturkompensator
US20020089398A1 (en) *	1998-12-21	2002-07-11	Dieter Wolk	Frequency-stabilized waveguide arrangement

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US2215582A (en) *	1938-02-02	1940-09-24	Rca Corp	Resonant line and associated circuit
US2716222A (en) *	1951-07-17	1955-08-23	Louis D Smullin	Temperature compensated cavity resonator
US2751576A (en) *	1952-01-14	1956-06-19	North American Aviation Inc	Closed-cycle pressure transducer
US2752576A (en) *	1955-05-23	1956-06-26	Bomac Lab Inc	Tuning mechanism for reference cavity resonators
US3108240A (en) *	1958-01-17	1963-10-22	Henry J Riblet	Temperature compensated microwave cavity
US3048803A (en) *	1959-03-16	1962-08-07	Hughes Aircraft Co	Temperature compensated resonant cavity
CH541873A (de) *	1972-07-24	1973-09-15	Siemens Ag Albis	Zylindrischer Hohlraumresonator
JPS5387149A (en) *	1977-01-11	1978-08-01	Mitsubishi Electric Corp	Cylindrical cavity resonator
US4156860A (en) *	1977-08-03	1979-05-29	Communications Satellite Corporation	Temperature compensation apparatus for a resonant microwave cavity
US5374911A (en) *	1993-04-21	1994-12-20	Hughes Aircraft Company	Tandem cavity thermal compensation

2004
- 2004-11-09 FR FR0452568A patent/FR2877773B1/fr not_active Expired - Fee Related
2005
- 2005-10-14 CA CA2523371A patent/CA2523371C/fr active Active
- 2005-11-02 CN CN200510117191.0A patent/CN1812188B/zh active Active
- 2005-11-04 DE DE602005017108T patent/DE602005017108D1/de active Active
- 2005-11-04 AT AT05110380T patent/ATE445920T1/de not_active IP Right Cessation
- 2005-11-04 ES ES05110380T patent/ES2334038T3/es active Active
- 2005-11-04 EP EP05110380A patent/EP1655802B1/de active Active
- 2005-11-08 US US11/268,621 patent/US7453337B2/en active Active

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2998582A (en) *	1958-01-17	1961-08-29	Henry J Riblet	Temperature compensated microwave cavity
US4706053A (en) *	1985-07-29	1987-11-10	Gte Telecommunicazioni, S.P.A.	Microwave metallic cavity
US20020089398A1 (en) *	1998-12-21	2002-07-11	Dieter Wolk	Frequency-stabilized waveguide arrangement
EP1187247A2 (de) *	2000-08-29	2002-03-13	Com Dev Ltd.	Mikrowellenresonator mit externem Temperaturkompensator

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US7564327B2 (en)	2006-10-05	2009-07-21	Com Dev International Ltd.	Thermal expansion compensation assemblies
CN101329003B (zh) *	2007-06-22	2011-09-28	泰勒斯公司	用于相位稳定波导管的机械式温度补偿设备
JP2010268459A (ja) *	2009-05-15	2010-11-25	Thales	温度補償技術が適用されたフィルタおよびマルチプレクサ用の多重膜可撓性壁システム
EP2256854A1 (de)	2009-05-15	2010-12-01	Thales	Flexible Multimembran-Wandvorrichtung für Filter und Multiplexer mit Wärmeausgleichstechnologie
CN104347919A (zh) *	2013-08-08	2015-02-11	北京飞卡科技有限公司	一种用于微波滤波器的温度补偿装置及其温度补偿方法

Also Published As

Publication number	Publication date
EP1655802B1 (de)	2009-10-14
US7453337B2 (en)	2008-11-18
DE602005017108D1 (de)	2009-11-26
FR2877773B1 (fr)	2007-05-04
ATE445920T1 (de)	2009-10-15
CN1812188A (zh)	2006-08-02
CA2523371A1 (fr)	2006-05-09
ES2334038T3 (es)	2010-03-04
US20060097827A1 (en)	2006-05-11
CN1812188B (zh)	2013-04-03
FR2877773A1 (fr)	2006-05-12
CA2523371C (fr)	2011-01-25

Publication	Publication Date	Title
EP1655802B1 (de)	2009-10-14	Regelbares temperaturkompensiertes System für Mikrowellenresonatoren
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FR2835609A1 (fr)	2003-08-08	Capteur de temperature a thermistance et son procede de fabrication
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FR2797721A1 (fr)	2001-02-23	Bougie d'allumage equipee d'un capteur de pression, et moteur thermique equipe de telles bougies
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