EP0702422A1 - Vorrichtung zum Befestigen eines Massenstreifens an einem Wellenleiterende mittels eines Halterungsflansches - Google Patents

Vorrichtung zum Befestigen eines Massenstreifens an einem Wellenleiterende mittels eines Halterungsflansches Download PDF

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Publication number
EP0702422A1
EP0702422A1 EP95402086A EP95402086A EP0702422A1 EP 0702422 A1 EP0702422 A1 EP 0702422A1 EP 95402086 A EP95402086 A EP 95402086A EP 95402086 A EP95402086 A EP 95402086A EP 0702422 A1 EP0702422 A1 EP 0702422A1
Authority
EP
European Patent Office
Prior art keywords
spacers
retaining flange
ground strip
waveguide
flange
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.)
Ceased
Application number
EP95402086A
Other languages
English (en)
French (fr)
Inventor
Gilles Avignon
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 CIT SA
Original Assignee
Alcatel Telspace 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 Alcatel Telspace SA filed Critical Alcatel Telspace SA
Publication of EP0702422A1 publication Critical patent/EP0702422A1/de
Ceased 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
    • H01P1/04—Fixed joints
    • H01P1/042—Hollow waveguide joints

Definitions

  • the field of the invention is that of devices allowing the fixing of a ground strip at the end of a waveguide.
  • the assembly of two waveguides is usually carried out using flanges which are screwed together. Mass continuity is ensured in this case by screwing.
  • a microwave seal for example made of triconite, is fixed between the two waveguides, and on the outside and at the end of one of the waveguides a ground strip, generally made up of flexible metal strips extending a metal strip (like a comb). The strips enclose the other waveguide when the waveguides are brought together and thus ensure optimal ground contact between the guides.
  • a ground strip of this type is generally fixed to one of the waveguides by a retaining flange constituted by a metal strip, the tightening of which is ensured by a screw and which ensures a strapping of the mass band.
  • the object of the present invention is in particular to overcome this drawback.
  • one of the objectives of the invention is to provide a device for fixing a ground strip to the end of a waveguide using a retaining flange which ensures efficient fixing and uniform of the mass strip.
  • a device for fixing a ground strip at the end of a waveguide using a retaining flange the retaining flange being constituted by at least two spacers forming a discontinuous flange when they are juxtaposed, the ground strip being disposed around the retaining flange and resting on a retaining flange external to the ground strip and secured of the waveguide, the device comprising means for spacing the spacers relative to each other ensuring uniform tightening of the ground band between the spacers and the retaining flange.
  • the spacers are preferably housed in a groove to allow the height of the earth band to be adapted to that of the spacers.
  • the relative spacing means of the spacers are for example constituted by countersunk head screws, the heads of which each penetrate into a conical housing formed by the juxtaposition of two spacers.
  • the discontinuous flange can be circular in shape and the device of the invention can be applied to the assembly of waveguides, one of which is included in a drawer extractable from a rack and the other of which is waveguide. is attached to this bay.
  • FIG. 1 is a simplified perspective view of a power combiner constituting the bottom wall of a bay comprising extractable drawers
  • FIG. 2 is an enlarged perspective view of the access 11 of FIG. 1.
  • the power combiner generally referenced by 10, has four identical ports 11 to 14 formed by ends of waveguides extending into the combiner.
  • the ports 11 to 14 open onto the cover 15 of the power combiner, constituted by a metal wall.
  • the accesses are intended to cooperate with four waveguides located at the rear of extractable drawers from the bay.
  • Each access has a groove 21 (fig.2) intended to receive a microwave seal.
  • the groove 21 is circular and delimited on the outside by a support flange for a ground strip (not shown in these figures) fixed around its central opening 20.
  • the support flange is here constituted by four spacers 22 to 25 forming a discontinuous flange when they are juxtaposed and the ground strip is arranged around this retaining flange.
  • the spacers are fixed by means of relative spacing of these spacers from one another, here constituted by screws 26 to 29 with countersunk heads.
  • FIG 3 is a front view of a ground strip 30.
  • the ground strip 30 is constituted by flexible metal strips 31 extending a metal strip 32, in the manner of a comb.
  • Such a ground strip is for example manufactured by the company Instrument Specialties (protected name) under the reference 97-223 and is commonly found at suppliers of microwave components.
  • Figure 4 is a top view of the access of Figure 2 provided with a ground strip 30.
  • the ground strip 30 is arranged in a circle and its two ends are side by side to ensure ground contact on all a perimeter.
  • the spacers 24 and 25 as well as the screws 27 to 29 are not shown for reasons of clarity.
  • the spacers are obtained by cutting into equal parts a circular flange previously drilled and chamfered at the cutting locations. Such flanges exist in different dimensions and are standardized. Four identical quarters of the flange are then obtained, the ends of which have a shape such that the screwing of the screws 26 to 29 with countersunk heads causes a relative spacing of these spacers 22 to 25.
  • the countersunk heads each penetrate into a conical housing formed by the juxtaposition of two spacers.
  • the ground strip 30 is disposed outside the spacers, it is pressed against a retaining flange 40 external to the ground strip 30 and integral with the waveguide. This ensures uniform tightening of the ground strip 30 between the various spacers 22 to 25 and the retaining flange 40.
  • the microwave seal 41 housed in the groove 21, is constituted by a metallic knit conforming to the shape of the guides and which is crushed between the waveguides when they are brought together.
  • spacers it is not necessary to use four spacers.
  • a number of four spacers is however optimal for the qualities of maintenance and ground contact sought.
  • the spacing means of the spacers can also be constituted by pins such as that shown in FIG. 5.
  • a pin 50 the upper part of which is threaded, comprises two fins 51 and 52 extending perpendicularly to the central axis of the pawn.
  • the 90 ° rotation of the pin causes the spacing of the spacers referenced 53 and 54.
  • the pin can be fixed by a nut 55.
  • Other embodiments are possible, in particular by using eccentric elements.
  • FIG. 6 is a sectional view along VI-VI of Figure 4. In this figure appear better the elements described above. We distinguishes, from the outside to the inside of the waveguide, the retaining flange 40, here welded to the power combiner, a metal strip 31 of the ground strip, the spacer 22 and the microwave seal 41 in triconite.
  • the spacers are preferably housed in a groove 60 so as to optimize the height of the ground strip which rests on the bottom of the groove 60.
  • the discontinuous flange is not necessarily circular and one can for example use spacers in the form of straight bars to form a quadrilateral. Four spacing elements are then used (countersunk head screws or the like) to maintain the ground strip. If L-shaped spacers are used, only two spacers are required.
  • the fixing device of the invention is preferably applied to the assembly of waveguides. It may be an assembly of a waveguide, included in a drawer extractable from a bay, to another waveguide integral with this bay. It is also possible to produce an interface part comprising the device of the invention and which is fixed on one of the waveguides.

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  • Constitution Of High-Frequency Heating (AREA)
EP95402086A 1994-09-19 1995-09-15 Vorrichtung zum Befestigen eines Massenstreifens an einem Wellenleiterende mittels eines Halterungsflansches Ceased EP0702422A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9411129 1994-09-19
FR9411129A FR2724770B1 (fr) 1994-09-19 1994-09-19 Dispositif de fixation d'une bande de masse a l'extremite d'un guide d'onde a l'aide d'une bride de maintien

Publications (1)

Publication Number Publication Date
EP0702422A1 true EP0702422A1 (de) 1996-03-20

Family

ID=9467046

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95402086A Ceased EP0702422A1 (de) 1994-09-19 1995-09-15 Vorrichtung zum Befestigen eines Massenstreifens an einem Wellenleiterende mittels eines Halterungsflansches

Country Status (2)

Country Link
EP (1) EP0702422A1 (de)
FR (1) FR2724770B1 (de)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2783295A (en) * 1952-01-18 1957-02-26 Gen Electric Waveguide seal
DE2502728A1 (de) * 1975-01-23 1976-07-29 Siemens Ag Flanschverbindung fuer hohlleiter

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2783295A (en) * 1952-01-18 1957-02-26 Gen Electric Waveguide seal
DE2502728A1 (de) * 1975-01-23 1976-07-29 Siemens Ag Flanschverbindung fuer hohlleiter

Also Published As

Publication number Publication date
FR2724770A1 (fr) 1996-03-22
FR2724770B1 (fr) 1997-01-03

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