EP0860891B1 - Mikrowellen-Bauelement - Google Patents
Mikrowellen-Bauelement Download PDFInfo
- Publication number
- EP0860891B1 EP0860891B1 EP98200462A EP98200462A EP0860891B1 EP 0860891 B1 EP0860891 B1 EP 0860891B1 EP 98200462 A EP98200462 A EP 98200462A EP 98200462 A EP98200462 A EP 98200462A EP 0860891 B1 EP0860891 B1 EP 0860891B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- magnetic
- housing
- magnetic field
- field strength
- microwave
- 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
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/32—Non-reciprocal transmission devices
- H01P1/38—Circulators
- H01P1/383—Junction circulators, e.g. Y-circulators
- H01P1/387—Strip line circulators
Definitions
- the invention relates to a microwave device with a microwave conductor arrangement for guiding electromagnetic waves and a gyromagnetic Material that is in operative connection with the electromagnetic waves arranged and thereby subjected to a magnetic field of a predetermined field strength is that the gyromagnetic material, at least one magnet for manufacturing of the magnetic field and a magnetic tuning element with For the adjustment of the magnetic field strength changeable magnetic conductivity are arranged in a magnetic circuit, with a the microwave conductor arrangement, at least the gyromagnetic material and the magnet partially enclosing housing, at least partially made of magnetic conductive material is formed and arranged in the magnetic circuit.
- the magnetic tuning element for the purpose of adjusting the magnetic field strength includes geometrically changeable component.
- the invention relates on such a component, wherein the magnetic tuning element a between two components of the magnetic circuit, at least one of which Part of the housing is formed, arranged air gap of variable width includes.
- a microwave conductor arrangement for guiding electromagnetic Waves and a gyromagnetic material that is in active connection with the electromagnetic waves are provided, in particular non-reciprocal microwave multi-gate components such as circulators or isolators educated. Due to their physical mode of action, it is necessary that these components are gyromagnetic materials, especially ferrite materials, contain a magnetic field of defined field strength.
- the microwave component can be used to produce this magnetic field be introduced a permanent magnet such that its magnetic field is the gyromagnetic Material flows through.
- the magnetic field strength is usually set to be able to set a precisely defined value. Adjusting the magnetic Field strength can be achieved by the magnet being fully saturated is magnetized. Then it is gradually demagnetized until the desired one The value of the magnetic field strength is reached in the case of the microwave component an optimal function of the desired type can be measured.
- From US-A-3,085,212 is a non-reciprocal line connection for electromagnetic Shafts known which have an outer housing made of non-magnetic Includes material with a central opening. There are three shafts around the housing conductor for guiding electromagnetic waves of the TEM wave type. These three waveguides have inner and outer conductors, the inner ones Project the conductor radially through the housing. There is a thin slice of conductive material attached at right angles to its central axis within said opening. This disc is conductive with the center of the inner conductor of the waveguide connected.
- First and second pillars with magnetically polarizable material gyromagnetic properties in the range of the frequencies of the waves, which are spread through the mentioned connection of the waveguides are centered within said opening is arranged on both sides of said disk of conductive material.
- a plurality of holes extend through the housing parallel to the central axis the opening and distributed around it.
- a majority of Permanent magnets, each located in one of the holes, have an orientation their polarization in the same direction parallel to the central axis of the Opening up.
- a first and a second end plate made of magnetic material extend themselves over the assigned ends of the opening mentioned and over the associated ends of said permanent magnets. In this way, a magnetic circuit of low reluctance formed by a number of the same name Poles of the permanent magnets in the middle through one of the mentioned magnetic Face plates, axially through the two columns of gyromagnetic material mentioned and radially through said second magnetic faceplate to the other Number (opposite) poles of said permanent magnets extends.
- the inner surfaces of the end plates are electrically conductive for training of electrical ground surfaces on opposite sides of the thin, conductive disc to the spread of the TEM waves through the said Support connection of the waveguide.
- At least a portion of one of the end plates is axially movable to the Reluctance of the magnetic circuit and the axial distance between at least a part of a ground surface formed by said movable end plate and to change the thin, conductive disc.
- a first and a second sleeve made of low-loss, dielectric material is in the Area of said waveguide connection each one of the gyromagnetic Arranged surrounding columns. At least one of the dielectric points Have an axial dimension that is less than the distance between said thin, conductive disc and a ground plane, and is also connected to the above-mentioned movable stimulating plate in order to achieve an adjustable Positioning the said dielectric sleeve in the area of said Allow waveguide connection, creating a tunable device is created for said waveguide connection.
- the invention has for its object a microwave component of the aforementioned Kind in such a way that the balance of the magnetic field strength is simplified.
- this object is achieved by a microwave component with the features of claim 1.
- the object is further achieved by a Microwave component with the features of the independent claim 2.
- the magnet to produce the magnetic field can then be inserted unchanged and are operated as he supplied for the manufacture of the microwave component becomes.
- the magnet is preferably magnetized up to its saturation.
- the magnetic Tuning element comprises a for the purpose of balancing the magnetic field strength geometrically changeable component. The adjustment can then be carried out by mechanical Action on the magnetic tuning element can be made, whereby ensures that the characteristics of, for example, the magnet used or the gyromagnetic material.
- the magnetic tuning element includes an air gap that can be changed Width.
- This variable air gap is between two components of the magnetic circuit arranged, their geometric Position adjustable to each other and at least one of them Part of the housing is formed.
- the air gap can be changed in width between two housing components can be arranged.
- a mechanically deformable tab is formed.
- the mechanically deformable tab is made of one Molded part of the housing in the magnetic circuit, for example through a die cut.
- the geometrically changeable component due to its wall thickness deformable region of the housing arranged in the magnetic circuit.
- the relationship between the wall thickness and the magnetic Conductivity used for the adjustment is the geometrically changeable component due to its wall thickness deformable region of the housing arranged in the magnetic circuit.
- the microwave conductor arrangement 1, 2, 4 forms with the ferrite disks 5, 6 a non-reciprocal microwave multi-port device, for example a circulator or an isolator, and is one known per se Form built up.
- a permanent magnet 7 is arranged flat on the outer conductor 4.
- the permanent magnet 7 is included in a magnetic circuit, which besides that Permanent magnets 7 and the ferrite disks 5, 6, the housing 3 including its bottom region 2 and a cover 8 with which the housing 3 on its side opposite the floor area 2 is closed.
- Housing 3 and cover 8 are made of magnetically conductive material, preferably made of steel.
- a magnetic tuning element is in a Tapped hole of the cover 8 is also a magnetically conductive screw 9 used.
- an air gap 12 whose width, i.e. Distance between the end face 10 and the surface 11 can be changed by adjusting the screw 9.
- the permanent magnet is magnetized to its saturation.
- the magnetic field strength in the Ferrite disks 5, 6 are adjusted by adjusting the screw 9. This is in a simple way in the fully assembled state of the microwave component Alignment of the magnetic field strength possible without the magnetic To change the properties of the permanent magnet itself. Be there Relatively large values for the width of the air gap are recommended usually the use of a permanent magnet with large magnetic Field strength.
- Such permanent magnets are preferably made of hard ferrite and the alloys with the designated NeFeB and SmCo.
- Such a mechanical adjustment can also be carried out instead of with a screw 9 an easier to manufacture, magnetically conductive pin that can be reached the place of the screw 9 in the arrangement of FIG. 1 occurs. It could also be Air gap 12 by repeated gluing of magnetically conductive discs under the cover 8 instead of the screw 9 or on the surface 11 of the Set permanent magnet 7 to the required width.
- the invention is also for Microwave conductor arrangements of other designs in the same advantageous manner can be used, for example for waveguide circulators and the like. In any case will be a simple, inexpensive and exact way of comparing the get magnetic field strength.
- a predetermined area 16 of the wall of the housing 3 for Change in its wall thickness mechanically deformed is by dashed lines Lines and arrows indicated.
- the area 16 thus forms the magnetic Tuning element, whose magnetic conductivity varies with the wall thickness and thus used to balance the magnetic field strength.
- the adjustment remains magnetic field strength of the permanent magnet 7 as such is unaffected.
- the formation of the magnetic tuning element according to that in FIGS. 2 and 3 represent a particularly low-cost option represents that requires no additional components and no or only a very small number additional manufacturing effort required, but due to the savings the simplification of the comparison procedure is of no importance.
Landscapes
- Non-Reversible Transmitting Devices (AREA)
Description
- Fig. 1
- ein Mikrowellen-Bauelement mit einer Schraube als magnetischem Abstimmelement,
- Fig. 2
- ein erstes Ausführungsbeispiel mit einer mechanisch verformbaren Lasche als Abstimmelement und
- Fig. 3
- ein zweites Ausführungsbeispiel mit einem in seiner Wandstärke verformbaren Bereich des Gehäuses als Abstimmelement.
Claims (2)
- Mikrowellen-Bauelement mit einer Mikrowellen-Leiteranordnung zum Leiten elektromagnetischer Wellen und einem gyromagnetischen Werkstoff, der in Wirkverbindung mit den elektromagnetischen Wellen angeordnet und mit einem Magnetfeld vorgebbarer Feldstärke dadurch beaufschlagt wird, daß der gyromagnetische Werkstoff, wenigstens ein Magnet zur Herstellung des magnetischen Feldes und ein magnetisches Abstimmelement mit zwecks Abgleich der magnetischen Feldstärke veränderbarer magnetischer Leitfähigkeit in einem magnetischen Kreis angeordnet sind, mit einem die Mikrowellen-Leiteranordnung, den gyromagnetischen Werkstoff und den Magneten wenigstens teilweise umschließendes Gehäuse (3), das wenigstens bereichsweise aus magnetisch leitendem Werkstoff ausgebildet und in dem magnetischen Kreis angeordnet ist und das mit wenigstens einem seiner im magnetischen Kreis angeordneten Bereiche wenigstens einen Teil des magnetischen Abstimmelements bildet, worin das magnetische Abstimmelement ein zwecks Abgleich der magnetischen Feldstärke geometrisch veränderbares, einen zwischen zwei Bauteilen des magnetischen Kreises, von denen wenigstens eines von einem Teil des Gehäuses (3) gebildet ist, angeordneten Luftspalt (15) veränderbarer Breite umfassendes Bauteil umfaßt,
dadurch gekennzeichnet, daß der Luftspalt (15) veränderbarer Breite des magnetischen Abstimmelements in einem Wandbereich des Gehäuses (3) mit einer mechanisch verformbaren Lasche (14) gebildet ist, die aus dem Wandbereich des Gehäuses (3) herausgearbeiter ist. - Mikrowellen-Bauelement mit einer Mikrowellen-Leiteranordnung zum Leiten elektromagnetischer Wellen und einem gyromagnetischen Werkstoff, der in Wirkverbindung mit den elektromagnetischen Wellen angeordnet und mit einem Magnetfeld vorgebbarer Feldstärke dadurch beaufschlagt wird, daß der gyromagnetische Werkstoff, wenigstens ein Magnet zur Herstellung des magnetischen Feldes und ein magnetisches Abstimmelement mit zwecks Abgleich der magnetischen Feldstärke veränderbarer magnetischer Leitfähigkeit in einem magnetischen Kreis angeordnet sind, mit einem die Mikrowellen-Leiteranordnung, den gyromagnetischen Werkstoff und den Magneten wenigstens teilweise umschließenden Gehäuse (3), das wenigstens bereichsweise aus magnetisch leitendem Werkstoff ausgebildet und in dem magnetischen Kreis angeordnet ist und das mit wenigstens einem seiner im magnetischen Kreis angeordneten Bereiche wenigstens einen Teil des magnetischen Abstimmelements bildet, worin das magnetische Abstimmelement ein zwecks Abgleich der magnetischen Feldstärke geometrisch veränderbares Bauteil umfaßt,
dadurch gekennzeichnet, daß das geometrisch veränderbare Bauteil durch einen in seiner Wandstärke verformbaren, im magnetischen Kreis angeordneten Bereich (16) des Gehäuses (3) gebildet ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19707153A DE19707153A1 (de) | 1997-02-22 | 1997-02-22 | Mikrowellen-Bauelement |
DE19707153 | 1997-02-22 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0860891A1 EP0860891A1 (de) | 1998-08-26 |
EP0860891B1 true EP0860891B1 (de) | 2003-09-03 |
Family
ID=7821197
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98200462A Expired - Lifetime EP0860891B1 (de) | 1997-02-22 | 1998-02-13 | Mikrowellen-Bauelement |
Country Status (5)
Country | Link |
---|---|
US (1) | US6118352A (de) |
EP (1) | EP0860891B1 (de) |
JP (1) | JP4067624B2 (de) |
CN (1) | CN1122326C (de) |
DE (2) | DE19707153A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007015544B4 (de) * | 2007-03-30 | 2011-01-27 | Siemens Ag | Zirkulator, Zirkulator-Betriebsverfahren, Magnetresonanzantenneneinrichtung mit einem solchen Zirkulator und Magnetresonanzgerät mit einer derartigen Mangnetresonanzantenneneinrichtung |
WO2015063681A1 (en) | 2013-10-28 | 2015-05-07 | Uniwersytet Wroclawski | Coating for absorbing energy, especially the energy of electromagnetic and mechanical waves, and its use |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3090930A (en) * | 1957-12-26 | 1963-05-21 | Bell Telephone Labor Inc | Variable gyromagnetic wave transmission device |
US3085212A (en) * | 1961-04-17 | 1963-04-09 | Sperry Rand Corp | Tunable circulator |
US3311839A (en) * | 1965-12-16 | 1967-03-28 | Northern Electric Co | Compensated tunable cavity with single variable element |
US3448409A (en) * | 1967-11-24 | 1969-06-03 | Bell Telephone Labor Inc | Integrated microwave circulator and filter |
EP0005801A1 (de) * | 1978-05-25 | 1979-12-12 | Hitachi Metals, Ltd. | Mikrowellenferritbauteil |
GB2059171A (en) * | 1979-08-22 | 1981-04-15 | Secr Defence | Improvements in or relating to microwave circulators |
JPS5685919A (en) * | 1979-12-14 | 1981-07-13 | Hitachi Metals Ltd | Lumped constant type circulator and isolator |
FR2477782A1 (fr) * | 1980-03-05 | 1981-09-11 | Thomson Csf | Dispositif d'accord en hyperfrequences, du type a contacts glissants, et filtre comportant un tel dispositif |
JPS6158301A (ja) * | 1984-08-30 | 1986-03-25 | Sony Corp | 磁気装置 |
JPS6161503A (ja) * | 1984-08-31 | 1986-03-29 | Murata Mfg Co Ltd | 誘電体共振器 |
US4675621A (en) * | 1985-11-12 | 1987-06-23 | Decibel Products, Inc. | Temperature compensated circulator |
-
1997
- 1997-02-22 DE DE19707153A patent/DE19707153A1/de not_active Withdrawn
-
1998
- 1998-02-13 EP EP98200462A patent/EP0860891B1/de not_active Expired - Lifetime
- 1998-02-13 DE DE59809440T patent/DE59809440D1/de not_active Expired - Lifetime
- 1998-02-19 US US09/026,450 patent/US6118352A/en not_active Expired - Lifetime
- 1998-02-19 JP JP03740198A patent/JP4067624B2/ja not_active Expired - Fee Related
- 1998-02-20 CN CN98105222A patent/CN1122326C/zh not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
EP0860891A1 (de) | 1998-08-26 |
DE19707153A1 (de) | 1998-08-27 |
CN1197304A (zh) | 1998-10-28 |
DE59809440D1 (de) | 2003-10-09 |
JPH114104A (ja) | 1999-01-06 |
CN1122326C (zh) | 2003-09-24 |
JP4067624B2 (ja) | 2008-03-26 |
US6118352A (en) | 2000-09-12 |
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