EP0802576B1 - Couplage pour deux guides d'ondes de sections transversales différentes - Google Patents

Couplage pour deux guides d'ondes de sections transversales différentes Download PDF

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Publication number
EP0802576B1
EP0802576B1 EP97400752A EP97400752A EP0802576B1 EP 0802576 B1 EP0802576 B1 EP 0802576B1 EP 97400752 A EP97400752 A EP 97400752A EP 97400752 A EP97400752 A EP 97400752A EP 0802576 B1 EP0802576 B1 EP 0802576B1
Authority
EP
European Patent Office
Prior art keywords
coupling
wave
steps
wave types
types
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
EP97400752A
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German (de)
English (en)
Other versions
EP0802576A1 (fr
Inventor
Martin Dipl. Ing. Schneider
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 Lucent SAS
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.)
Filing date
Publication date
Application filed by Alcatel SA, Nokia Inc filed Critical Alcatel SA
Publication of EP0802576A1 publication Critical patent/EP0802576A1/fr
Application granted granted Critical
Publication of EP0802576B1 publication Critical patent/EP0802576B1/fr
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
    • H01P5/00—Coupling devices of the waveguide type
    • H01P5/08—Coupling devices of the waveguide type for linking dissimilar lines or devices
    • H01P5/082—Transitions between hollow waveguides of different shape, e.g. between a rectangular and a circular waveguide

Definitions

  • the invention relates to a clutch for two electromagnetic waveguide with different Cross-sectional shapes one behind the other in the axial direction arranged steps with a substantially rectangular Cross section and rounded corners as well as different has clear width in which a low reflection Transmission of the wave types intended for signal routing takes place (EP 0 145 292 A2).
  • Such a clutch also known as a "transition”
  • has the Task the signal-carrying wave type (mode) of a Waveguide reflection-free in the intended for signal routing
  • mode the signal-carrying wave type
  • the Cross sections of the two waveguides are fundamental any. For example, you can use elliptical, rectangular, be square or round.
  • a graduated clutch according to the one mentioned EP 0 145 292 A2 is shorter.
  • the use of this well-known Coupling with sudden change in cross-sectional geometry is expressly limited to frequency ranges in which both in the two waveguides to be connected and in the clutch itself only the corresponding fundamental wave may be spreadable.
  • the cross sections of each Levels of the clutch are chosen so that others Wave types are not capable of spreading.
  • This well-known Coupling is therefore limited to single-mode operation. She serves exclusively for the transmission of the respective Basic modes of the waveguide to be connected. It will also provided that the individual stages are from one end the coupling to the other widen or narrow in the same direction, so that the cut-off frequency of the basic mode within the Clutch changes monotonously.
  • the clutch is only for the connection of a rectangular with an elliptical Waveguide provided.
  • the invention is based on the object at the outset further described device so that it at simple setup with no restrictions on the connection any waveguide and for any signal-carrying Wave types can be used.
  • “Expandable” in the sense of the invention means that due to the dimensioning of the coupling basically all possible wave types could or may spread. There are in contrast to the known clutch described above no measures were taken to expand it to prevent any wave types.
  • the coupling used in this device is simple constructed and easy to manufacture. It can be made from one part are manufactured in which the individual stages, for example be milled. The diameter of the milling cutter appropriately and consciously chosen so that the radii of the rounded corners when dimensioning the steps with are taken into account.
  • the coupling is suitable with waveguides very different cross sections with minimal Connect loss of performance with each other. It is not one certain cross-sectional shape of the waveguide to be connected limited.
  • the wave types provided for signal routing in the waveguides to be connected can both from Be basic wave type as well as a higher wave type correspond. There is also the possibility that in one Waveguide of the basic wave type and in the other waveguide a higher wave type is used for signal routing.
  • the Coupling ensures the transformation of the shaft types in two directions of transmission.
  • the coupling can also be used in particular for waveguides in which several modes are spreadable. So can the coupling is advantageous for connecting waveguides are used in so-called overmoded and thus very low-loss frequency ranges are used.
  • the Coupling also allows the connection of a single-mode Frequency range operated and therefore comparatively small waveguide with an overmoded waveguide, at which several modes are capable of spreading and therefore one has a comparatively large cross-section.
  • the coupling can also be used to selectively excite several Wave types are used to overlay them for example to feed antennas that are special Directional characteristics should have.
  • Fig. 1 in a schematic representation of a connection point between two waveguides with a coupling after Invention.
  • Fig. 2 shows a cross section through the clutch in enlarged Presentation.
  • Fig. 6 is a diagram for the reflection factor over the Frequency.
  • Two electromagnetic waveguides 1 and 2 are through one Coupling 3 connected to each other with little reflection.
  • the waveguide 1 and 2 have very different dimensions.
  • the Waveguide 1 has, for example, a rectangular one Cross section, while the waveguide 2 for example is elliptical, with a much larger clearance Cross-sectional area as the waveguide 1.
  • the coupling 3 has three stages in its clear cross section S1, S2 and S3 on.
  • the clear dimensions of levels S1 to S3 can according to FIG. 3 from one end of the clutch 3 to change their other end in the same direction so that at one end the smaller waveguide 1 and at the other end the larger one Waveguide 2 can be connected with low reflection.
  • the Steps S1 to S3 can also overlap each other according to FIG. 4.
  • the sudden change given by levels S1 to S3 the cutoff frequency of the signal routing Wave types can then fall from one end of the coupling and rise again or vice versa. Whether there is such Overlap depends on the operating frequency range and the respective cross-sectional shape and size of the to be connected Waveguide and is used in the respective application decided.
  • connection is closed connecting waveguide clearly and must not be interchanged because the coupling is asymmetrical in the axial direction.
  • the axes of the individual stages S1 to S3 can be shown in FIG. 5 also be offset from one another by a distance V, namely in both the horizontal and vertical directions.
  • the clutch 3 is made in one piece. It is over flanges 4 and 5 can be connected to the waveguides 1 and 2.
  • Levels S1 to S3 can be produced using a milling cutter, for example become. Each of the levels S1 to S3 then has an i. w. rectangular clear cross section with rounded corners. The The radius of the corners depends on the diameter of the milling cutter used certainly. It is only limited by the height and width of the individual stages.
  • the establishment of basic mechanical properties of the Coupling 3 can be transmitted Frequency range and the required adjustment of the signal-carrying shaft types based on empirical values become. This relates i. w. on the number of required levels of clutch 3, the choice of each Fillets and the possibility of individual overlaps Steps of clutch 3 or the outer steps of clutch 3 with the connected waveguides 1 and 2.
  • the number of required stages of clutch 3 depends mainly according to the cross sections of the to be connected Waveguide, according to the required frequency bandwidth and the electromagnetic requirements within the selected Frequency range. This relates, for example, to the Reflection and transmission factor of the signal-carrying Wave types.
  • a coupling was produced between a rectangular waveguide with a cross section of 10.67 mm x 4.32 mm and an elliptical waveguide, the main axes of which were dimensioned at 25.0 mm and 15.3 mm.
  • the cross-sectional area of the rectangular waveguide is 6.5 times smaller than that of the elliptical waveguide.
  • the clutch has three stages, which are arranged axially symmetrical to each other.
  • the task of the coupling is the low-reflection adaptation of the basic modes H 10 of the rectangular waveguide and H cell of the elliptical waveguide in the frequency range 17.7 GHz to 19.7 GHz.
  • 4 shows the measured (solid line) and the calculated (dashed line) reflection factor in the frequency range from 17.0 to 20.0 GHz.
  • the reflection factor is ⁇ -34dB.

Landscapes

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

Claims (7)

  1. Coupleur de deux guides d'ondes électromagnétiques à différentes formes de section disposant de paliers à section essentiellement rectangulaire, angles arrondis et différents diamètres intérieurs, placés l'un derrière l'autre dans le sens de l'axe, ce coupleur effectue une transmission à faible réflexion des types d'ondes particuliers au guidage de signaux se distinguant par les éléments suivants :
    grâce à un dimensionnement approprié de tous les paliers (S1-S3) de telle sorte que, en plus des ondes de base, d'autres types d'ondes puissent se propager et
    grâce aux dimensions du coupleur, seules les ondes de guidage des signaux se propagent dans les guides d'onde rattachés, alors que les types d'onde non prévus pour le guidage des signaux perdent toute puissance en raison des interférences.
  2. Coupleur correspondant à la spécification 1, remarquable du fait que les différents paliers (S1 à S3) se chevauchent.
  3. Méthode de fabrication d'un coupleur correspondant à la spécification 1 ou 2, remarquable du fait que tous les paliers (S1 à S3), en fonction de la bande de fréquence à transférer et des types d'ondes souhaités, disposent de paramètres définis les uns par rapport aux autres, tels que les valeurs de la hauteur (H) et de la largeur (B) de la section intérieure, ainsi que celles concernant la longueur axiale (L), le rayon (R) des angles arrondis ainsi que le déplacement possible (V) des axes.
  4. Méthode correspondant à la spécification 3, remarquable du fait que les différents paliers (S1 à S3) du coupleur (3) sont fabriqués à l'aide d'une fraise.
  5. Méthode correspondant à la spécification 4, remarquable du fait que le coupleur respecte la technique du moulage.
  6. Méthode correspondant à la spécification 3, remarguable du fait que le coupleur est fabriqué par électrodéposition.
  7. Méthode correspondant à l'une des spécifications 3 à 6, remarquable du fait que, grâce au dimensionnement des paliers (S1 à S3) du coupleur (3), les types d'onde prévus pour le guidage de signaux se superposent en amplitude et en phase dans le but souhaité.
EP97400752A 1996-04-20 1997-04-01 Couplage pour deux guides d'ondes de sections transversales différentes Expired - Lifetime EP0802576B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19615854A DE19615854C1 (de) 1996-04-20 1996-04-20 Verfahren zur Herstellung einer Kupplung für das Verbinden zweier elektromagnetischer Hohlleiter
DE19615854 1996-04-20

Publications (2)

Publication Number Publication Date
EP0802576A1 EP0802576A1 (fr) 1997-10-22
EP0802576B1 true EP0802576B1 (fr) 2001-08-01

Family

ID=7791991

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97400752A Expired - Lifetime EP0802576B1 (fr) 1996-04-20 1997-04-01 Couplage pour deux guides d'ondes de sections transversales différentes

Country Status (5)

Country Link
US (1) US5886588A (fr)
EP (1) EP0802576B1 (fr)
AU (1) AU708582B2 (fr)
BR (1) BR9701847A (fr)
DE (2) DE19615854C1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1233469A3 (fr) * 2001-01-26 2003-07-30 Spinner GmbH Elektrotechnische Fabrik Armature pour guides d'ondes
US6583693B2 (en) 2001-08-07 2003-06-24 Andrew Corporation Method of and apparatus for connecting waveguides
US7068121B2 (en) * 2003-06-30 2006-06-27 Tyco Technology Resources Apparatus for signal transitioning from a device to a waveguide
US7893789B2 (en) 2006-12-12 2011-02-22 Andrew Llc Waveguide transitions and method of forming components
DE102009026433A1 (de) 2009-05-25 2010-12-09 Endress + Hauser Gmbh + Co. Kg Anordnung zur Füllstandsmessung mit einem mit Mikrowellen arbeitenden Füllstandsmessgerät
US8816791B2 (en) * 2010-09-28 2014-08-26 Aviat U.S., Inc. Systems and methods of a rectangular-to-circular waveguide transition
JP6526509B2 (ja) * 2015-07-23 2019-06-05 株式会社東芝 導波管ベンドおよび無線機器
CN115441141B (zh) * 2022-10-17 2023-04-25 北京星英联微波科技有限责任公司 阶梯扭波导

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB591667A (en) * 1942-03-31 1947-08-25 Sperry Gyroscope Co Inc Improvements in or relating to impedance transformers for wave guides
BE552817A (fr) * 1956-01-26
GB850992A (en) * 1958-09-11 1960-10-12 Standard Telephones Cables Ltd Electrical h.f. waveguide junction between cylindrical guides of unlike diameters
US3019399A (en) * 1959-03-06 1962-01-30 Microwave Ass Circular waveguide diameter transformer
GB842344A (en) * 1959-03-12 1960-07-27 Standard Telephones Cables Ltd Electrical waveguide junction arrangement
US3336543A (en) * 1965-06-07 1967-08-15 Andrew Corp Elliptical waveguide connector
DE1948157C3 (de) * 1969-09-23 1978-03-09 Spinner-Gmbh Elektrotechnische Fabrik, 8000 Muenchen Übergangstransformationsteil für Hohlleiter
US3818383A (en) * 1973-02-27 1974-06-18 Andrew Corp Elliptical-to-rectangular waveguide transition
JPS55101380A (en) * 1979-01-20 1980-08-02 Matsushita Electric Industrial Co Ltd Driver for automatically clamping screw
US4540959A (en) * 1983-11-22 1985-09-10 Andrew Corporation Rectangular to elliptical waveguide connection
US4642585A (en) * 1985-01-30 1987-02-10 Andrew Corporation Superelliptical waveguide connection
US4906951A (en) * 1989-02-15 1990-03-06 United States Department Of Energy Birefringent corrugated waveguide

Also Published As

Publication number Publication date
BR9701847A (pt) 1998-09-08
DE59704165D1 (de) 2001-09-06
DE19615854C1 (de) 1997-11-20
EP0802576A1 (fr) 1997-10-22
AU708582B2 (en) 1999-08-05
AU1896197A (en) 1997-10-30
US5886588A (en) 1999-03-23

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