EP0395888A2 - Iris de couplage - Google Patents

Iris de couplage Download PDF

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Publication number
EP0395888A2
EP0395888A2 EP90106107A EP90106107A EP0395888A2 EP 0395888 A2 EP0395888 A2 EP 0395888A2 EP 90106107 A EP90106107 A EP 90106107A EP 90106107 A EP90106107 A EP 90106107A EP 0395888 A2 EP0395888 A2 EP 0395888A2
Authority
EP
European Patent Office
Prior art keywords
coupling
openings
wave mode
wave
coupling openings
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
EP90106107A
Other languages
German (de)
English (en)
Other versions
EP0395888A3 (fr
EP0395888B1 (fr
Inventor
Uwe Dipl.-Ing. Rosenberg
Dieter Dipl.-Ing. Wolk
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.)
Bosch Telecom GmbH
Original Assignee
ANT Nachrichtentechnik GmbH
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 ANT Nachrichtentechnik GmbH filed Critical ANT Nachrichtentechnik GmbH
Publication of EP0395888A2 publication Critical patent/EP0395888A2/fr
Publication of EP0395888A3 publication Critical patent/EP0395888A3/fr
Application granted granted Critical
Publication of EP0395888B1 publication Critical patent/EP0395888B1/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
    • 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
    • H01P1/2082—Cascaded cavities; Cascaded resonators inside a hollow waveguide structure with multimode resonators
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P1/00—Auxiliary devices
    • H01P1/16—Auxiliary devices for mode selection, e.g. mode suppression or mode promotion; for mode conversion

Definitions

  • the present invention relates to a coupling diaphragm which is arranged between two cavity resonators of a microwave filter and has at least two coupling openings which are dimensioned and placed in such a way that coupling between the same wave types occurs in the two cavity resonators.
  • Such a coupling aperture is from IEEE Transactions on Microwave Theory and Techniques, Vol. MTT-35, No. 12, Dec. 1987, pp. 1143-1149.
  • the coupling openings are arranged in the coupling aperture in such a way that, if possible, only one single wave mode is coupled in the two cavity resonators separated from one another by the coupling aperture.
  • the coupling openings are placed according to the prior art in such a way that the wave mode not to be coupled has the lowest possible field strength there.
  • the invention is based on the object of specifying a coupling panel of the type mentioned in the the coupling openings are arranged so that the desired coupling is very strong, but each parasitic coupling is reduced as much as possible.
  • the implementation of the coupling aperture carried out according to the invention brings about a very strong coupling of a first wave mode existing in both adjacent cavity resonators and at the same time still a second wave mode also existing in both cavity resonators via a plurality of coupling openings.
  • parasitic coupling between non-similar wave modes is largely reduced.
  • coupling orifices which can be used between the two adjacent cavity resonators is shown in FIG
  • coupling orifices have two coupling openings K1 and K2 of identical dimensions.
  • the locations for the coupling openings K1 and K2 are selected such that the magnetic field or a magnetic field component of the TE 11n wave mode existing in both adjacent cavity resonators at the coupling opening K1 is oriented in the same direction as with the coupling opening K2.
  • the magnetic field, or a magnetic field component, of the TM 01m wave mode existing in both cavity resonators is also oriented at least almost parallel to the field of the TE 11n wave mode.
  • the magnetic field or a magnetic field component of the TM 01m wave mode is aligned antiparallel to the magnetic field component of the TE 11n wave mode located there.
  • the magnetic field component of the TM 01m wave mode is oriented in opposite directions, but it has the same field strength there.
  • the coupling openings K1 and K2 have a greater extent in the direction of the magnetic fields or field tangents than transversely to them.
  • the coupling openings can also have a different shape, deviating from the slot shape shown in FIG. 2.
  • the wave modes are coupled via the magnetic field.
  • coupling via the electric field can be realized.

Landscapes

  • Control Of Motors That Do Not Use Commutators (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)
EP90106107A 1989-04-29 1990-03-30 Iris de couplage Expired - Lifetime EP0395888B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3914246 1989-04-29
DE3914246 1989-04-29

Publications (3)

Publication Number Publication Date
EP0395888A2 true EP0395888A2 (fr) 1990-11-07
EP0395888A3 EP0395888A3 (fr) 1991-09-25
EP0395888B1 EP0395888B1 (fr) 1995-03-01

Family

ID=6379779

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90106107A Expired - Lifetime EP0395888B1 (fr) 1989-04-29 1990-03-30 Iris de couplage

Country Status (2)

Country Link
EP (1) EP0395888B1 (fr)
DE (1) DE59008563D1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1187248A2 (fr) * 2000-08-29 2002-03-13 Com Dev Ltd. Filtre hyperfréquence à couplage latéral avec des iris espacés circonférentiellement

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3230481A (en) * 1959-09-30 1966-01-18 David J Lewis Method for segregating harmonic power in a waveguide system
US3715688A (en) * 1970-09-04 1973-02-06 Rca Corp Tm01 mode exciter and a multimode exciter using same
JPS5499547A (en) * 1978-01-24 1979-08-06 Mitsubishi Electric Corp Resonant cavity type band pass filter
US4742317A (en) * 1986-05-23 1988-05-03 General Electric Company Mode coupler for monopulse antennas and the like

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3230481A (en) * 1959-09-30 1966-01-18 David J Lewis Method for segregating harmonic power in a waveguide system
US3715688A (en) * 1970-09-04 1973-02-06 Rca Corp Tm01 mode exciter and a multimode exciter using same
JPS5499547A (en) * 1978-01-24 1979-08-06 Mitsubishi Electric Corp Resonant cavity type band pass filter
US4742317A (en) * 1986-05-23 1988-05-03 General Electric Company Mode coupler for monopulse antennas and the like

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, Band 32, Nr. 11, November 1984, Seiten 1449-1454, New York, US; W.-C. TANG et al.: "A true elliptic-function filter using triple-mode degenerate cavities" *
IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, Band 35, Nr. 12, Dezember 1987, Seiten 1143-1149, New York, US; R. BONETTI et al.: "Application of dual TM modes to triple- and quadruple-mode filters" *
IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, Band 37, Nr. 12, Dezember 1989, Seiten 2011-2019, New York, US; U. ROSENBERG et al.: "Filter design using in-line triple-mode cavities and novel iris couplings" *
PATENT ABSTRACTS OF JAPAN, Band 3, Nr. 121 (E-143), 11. Oktober 1979; & JP-A-54 99 547 (MITSUBISHI DENKI K.K.) 06-08-1979 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1187248A2 (fr) * 2000-08-29 2002-03-13 Com Dev Ltd. Filtre hyperfréquence à couplage latéral avec des iris espacés circonférentiellement
EP1187248A3 (fr) * 2000-08-29 2003-07-02 Com Dev Ltd. Filtre hyperfréquence à couplage latéral avec des iris espacés circonférentiellement

Also Published As

Publication number Publication date
EP0395888A3 (fr) 1991-09-25
DE59008563D1 (de) 1995-04-06
EP0395888B1 (fr) 1995-03-01

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