EP1812986B1 - Filtre haute frequence - Google Patents

Filtre haute frequence Download PDF

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Publication number
EP1812986B1
EP1812986B1 EP05795621A EP05795621A EP1812986B1 EP 1812986 B1 EP1812986 B1 EP 1812986B1 EP 05795621 A EP05795621 A EP 05795621A EP 05795621 A EP05795621 A EP 05795621A EP 1812986 B1 EP1812986 B1 EP 1812986B1
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EP
European Patent Office
Prior art keywords
housing
filter according
indentations
resonators
housing bottom
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.)
Not-in-force
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EP05795621A
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German (de)
English (en)
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EP1812986A1 (fr
Inventor
Franz Rottmoser
Dietmar Sieraczewski
Wilhelm Weitzenberger
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Kathrein SE
Original Assignee
Kathrein Werke KG
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Publication of EP1812986A1 publication Critical patent/EP1812986A1/fr
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    • 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
    • H01P1/201—Filters for transverse electromagnetic waves
    • H01P1/205—Comb or interdigital filters; Cascaded coaxial cavities
    • 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
    • H01P1/201—Filters for transverse electromagnetic waves
    • H01P1/205—Comb or interdigital filters; Cascaded coaxial cavities
    • H01P1/2053—Comb or interdigital filters; Cascaded coaxial cavities the coaxial cavity resonators being disposed parall to each other
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P11/00—Apparatus or processes specially adapted for manufacturing waveguides or resonators, lines, or other devices of the waveguide type
    • H01P11/007—Manufacturing frequency-selective devices

Definitions

  • the invention relates to a high-frequency filter in coaxial design, in particular in the manner of a high-frequency filter (such as duplexer) or a band-pass filter or band-stop filter.
  • the invention further relates to a method for tuning and / or producing a high-frequency filter.
  • a common antenna is often used for transmit and receive signals.
  • the transmit and receive signals each use different frequency ranges, and the antenna must be suitable for transmitting and receiving in both frequency ranges.
  • a suitable frequency filtering is required, with the one hand, the transmission signals from the transmitter to the antenna and on the other hand, the received signals are forwarded from the antenna to the receiver.
  • inter alia high-frequency filters in coaxial design are used today.
  • a pair of high frequency filters may be used, both of which pass a particular frequency band (bandpass filter).
  • a pair of high frequency filters may be used, both of which block a particular frequency band (bandstop filter).
  • a pair of high frequency filters may be used, one of which passes frequencies below a frequency between transmit and receive bands and blocks frequencies above that frequency (low pass filter), and the other filter blocks frequencies below a frequency between transmit and receive bands and overlying frequencies lets through (high-pass filter).
  • High frequency filters are often manufactured in the form of coaxial TEM resonators. These resonators can be inexpensively and economically manufactured from milling or castings and they ensure a high electrical quality and a relatively high temperature stability.
  • High-frequency filters which comprise an outer conductor housing in which a plurality of coaxial cavities are formed, in each of which an inner conductor is arranged in the form of an inner conductor tube. In this way, a multiplicity of resonators arranged next to one another is formed, wherein adjacent resonators are electrically coupled to one another via coupling openings.
  • the outer conductor housing such high-frequency filter is nowadays usually produced by casting or milling, wherein by appropriate choice or size and shape of the coupling openings and the distance between adjacent resonators, the desired response of the filter can be generated. Since tolerances can occur during the production of such high-frequency filters, it is generally necessary to rework the outer conductor housing mechanically. The reworking is usually done by the milling of the coupling openings. It proves to be disadvantageous that when reworking the filter, the coupling openings can only be increased, which leads to an increase in the electrical coupling between adjacent resonators. In particular, it is no longer possible to reduce the size of a milled opening that is too large in order to reduce the electrical coupling.
  • the coupling openings were initially always designed to be too small, and by successive re-milling the electrical coupling was set to the desired level.
  • the production and tuning of the filter was thus very complex and time-consuming. In particular, it had to be ensured that the coupling opening is not milled too large, because this error was not correctable and the corresponding outer conductor housing had to be discarded.
  • a filter using coaxial resonators for example, from the US 4,307,357 known.
  • the individual coaxial resonators connecting wall openings in the housing do not have to reach down to the floor level of a single Koaxialresonators, but that here the floor surface may be at a different level, for example, in this area is higher than the usual floor level and thus a kind Podium, threshold, step etc. formed is.
  • a coaxial comb-line filter which comprises a housing with a cavity in which rods are arranged. Each rod is integrally formed with one end to the housing. The other end of the rod extends into the cavity and ends in a certain relative position to the lid.
  • a coaxial filter for very short electromagnetic waves is also from the DE 21 61 792 B2 known.
  • a high-frequency filter which comprises the outer conductor housing having a housing bottom and a housing wall in which, for example, two resonators are formed.
  • Each resonator comprises an inner conductor electrically coupled to the housing bottom.
  • a breakthrough is provided in an intermediate wall separating the two resonators, which aperture is penetrated by a rod which is held at its opposite ends by dielectric sleeves which are penetrated by the respective inner conductor of the two resonators.
  • the aforementioned rod can be referred to as a coupling rod, since a coupling between the two resonators is adjustable by a height adjustment of these two inner conductor connecting rods.
  • the coupling rod is changed in height, by actuation of a coupling rod centrally passing, parallel to the inner conductors extending non-metallic screw, which with its frontal axis for a in a corresponding Recess in the housing base and with its opposite protruding axle portion in a corresponding, the two resonators separating housing intermediate wall engages above the coupling opening and is held.
  • the coupling rod is not held changeable in its height adjustment (according to FIG US Pat. No. 3,516,030 ), it is dispensed with the adjustment of the threaded rod and the corresponding holes for holding the threaded rod.
  • a resonator arrangement with an integrated helix arrangement is also known from US Pat US 4,342,969 A known.
  • the resonant filter comprises a helical winding, an opening is provided in the housing bottom for this purpose so that the lower end of the helical winding structure can be electrically connected through the opening to a printed circuit located below the housing.
  • Above the helix structures are then provided in the housing cover screws that serve the resonance filter setting.
  • the object of the invention is, starting from US 5,894,250 as the closest prior art, to provide an improved high frequency filter which is less expensive and less expensive to produce.
  • the object of the invention is also to provide a simpler and cheaper tuning and / or manufacturing method for a high-frequency filter.
  • the high-frequency filter according to the invention comprises an outer conductor housing with housing bottom and housing wall, in which a plurality of resonators are formed, each of which comprises an inner conductor tube electrically coupled to the housing bottom. At least one part of adjacent resonators is electrically coupled to one another via one or more coupling openings in the outer conductor housing, wherein the electrical coupling between adjacent resonators is influenced not only by the size and / or the shape of the coupling openings, but also by one or more depressions. These recesses are formed between at least part of the inner conductor tubes (i.e., approximately on a connecting line between the inner conductor tubes) of adjacent resonators in the case bottom.
  • the invention is based on the finding that such depressions lead to a weakening of the electrical coupling between adjacent resonators.
  • the degree of coupling is determined by the lateral extent and the depth of the recesses.
  • the high-frequency filter according to the invention can thus be tuned and produced with little processing effort.
  • the tuning of the filter can in particular also be iterative, i. the coupling between adjacent resonators can be tuned alternately by increasing the coupling openings and attaching depressions until the desired frequency response has been achieved.
  • the filter according to the invention is also much cheaper because less waste is produced during its production. In addition, the development time for the filter is reduced and a cheaper casting tool for the outer conductor housing can be used.
  • a particularly effective attenuation of the coupling is achieved in a preferred embodiment of the filter according to the invention in that one or more of the recesses lie in a plan view of the housing bottom adjacent to a coupling opening and / or at least partially within a coupling opening between adjacent resonators. If the housing bottom is viewed in plan view, then the surfaces of the depressions should be dimensioned and / or arranged such that they have at least 50% and in particular 70% to 100%, particularly preferably 80% to 100% of the area of one or more of the depressions, which are formed between two inner conductor tubes of adjacent resonators, within the at least one coupling openings between the adjacent resonators.
  • a plurality of depressions are arranged between at least a part of the inner conductor tubes of adjacent resonators, which are arranged next to one another and / or in the transverse direction of the housing next to one another and / or in the longitudinal and / or transverse directions offset to one another in the longitudinal direction of the outer conductor housing are.
  • the depressions arranged in the housing bottom can have any shapes and depth profiles.
  • the depressions in plan view of the housing bottom can be circular, rectangular, for example square, and / or star-shaped.
  • the depressions may also have any other shapes.
  • the depth profile of the depressions can be, for example, V-shaped and / or U-shaped.
  • the depth profile can taper downwards and / or widen.
  • Other possible shapes of the depth profile are cylindrical, conical or dome-shaped shapes.
  • the wells are further holes and / or cutouts in the housing bottom.
  • At least a part of the inner conductor tubes are galvanically connected at their lower ends to the housing bottom and they preferably have a cylindrical and / or rectangular and / or hexagonal or polygonal shape.
  • the mechanical length of the individual inner conductor tubes is substantially 1/4 of the wavelength of the resonant frequency of the respective resonators.
  • an electrically conductive cover is arranged in a particularly preferred embodiment of the invention on the upper side of the outer conductor housing.
  • the resonators of the filter according to the invention are designed and coupled such that a duplexer or a band-pass filter or a band-stop filter are formed.
  • the filter is particular configured such that it operates in the mobile radio frequency range, in particular in the GSM and / or UMTS mobile radio frequency range.
  • the invention further relates to a method for tuning the high-frequency electrical characteristics of a high-frequency filter, in particular the electrical coupling of the resonators of a high-frequency filter, wherein for weakening the electrical coupling of adjacent resonators, between at least a portion of the inner conductor tubes of adjacent resonators several recesses are formed in the housing bottom.
  • a tuning possibility of the filter for weakening the electrical coupling is made possible in a particularly simple manner.
  • the recesses are drilled and / or milled into the housing bottom.
  • the tuning method preferably comprises, as a further method step, the enlargement of one or more of the coupling openings in the outer conductor housing, in particular the milling of the coupling openings, whereby the electrical coupling between adjacent resonators is amplified.
  • the desired frequency response can be iteratively set, wherein the electrical coupling is increased on the one hand by increasing the coupling openings and on the other hand lowered by the formation of corresponding recesses in the housing bottom.
  • the invention also relates to a method of manufacturing a high-frequency filter, wherein the filter is tuned at the end of the method by means of the tuning method just described.
  • the production of the filter is very simplified. Especially Less rejects are produced because too much electrical coupling, which is caused by a too large milled coupling opening, can be compensated by corresponding recesses in the housing bottom.
  • FIG. 1 shows a plan view from above of a high-frequency filter in the form of a four-circuit microwave filter.
  • the filter comprises an electrically conductive outer conductor housing 1, which is preferably a milling or casting.
  • the outer conductor housing comprises a rectangular housing bottom 1b and a circumferential side wall la, which is arranged at the edge of the housing bottom 1b.
  • a lid is usually attached, which is not shown in Figure 1.
  • Inside the housing there are four adjacently arranged resonators R1, R2, R3 and R4, which are formed in square cavities with rounded corners in the housing 1. Adjacent cavities are connected to each other via so-called coupling openings 3, 4 and 5.
  • Each resonator R1, R2, R3 and R4 comprises centrally arranged in the respective cavity and subsequently also referred to as inner conductor 2 cylindrical inner conductor tubes 2 which are positioned perpendicular to the bottom 1b, wherein the lower ends of the inner conductor tubes in the embodiment described here galvanically with the electrically conductive bottom 1b of the housing 1 are connected.
  • a dielectric Between the inner conductors 2 and the walls of the resonator cavities is a dielectric, which in the embodiment described here is air.
  • the mechanical length of the inner conductor tubes in the filter shown is 1/4 of the electrical wavelength of the resonator frequency of the respective resonator.
  • the coupling openings in this case represent apertures, which are each bounded laterally by two opposing projections 6, 7 and 8 in the housing 1.
  • the size of the diaphragms 3, 4 and 5, the electrical coupling between the adjacent resonators can be influenced. It can be seen in Figure 1 that the openings 3, 4 and 5 are different are configured, in particular, the central coupling opening 4 in the longitudinal direction X and in the transverse direction Y of the housing has a smaller width than the coupling openings 3 and 5. The smaller width is caused by the projections 7, which are narrower than the projections 6 and 8 and extend further into the housing interior.
  • the electrical coupling between the resonators is influenced in particular by the width of the coupling openings in the transverse direction Y.
  • the coupling between the individual resonators is increased by increasing the aperture. This feature is exploited in the manufacture of the high-frequency filter to compensate for tolerances that occur when creating the casting tool for the outer conductor housing or during actual casting or milling of the outer conductor housing. Since only an increase in the coupling between adjacent resonators can be achieved by the widening of the aperture opening, in the embodiment of the filter according to the invention described here, the coupling between the resonators is further influenced by circular depressions or depressions 9 arranged in the aperture openings.
  • the filter according to the invention is in contrast to known Filter much easier to produce.
  • the coupling openings must first be made too small, so that by successive re-milling of the openings, the electrical coupling can be set to the desired level, because there is no way to attenuate too strong electrical coupling due to a large aperture again.
  • the manufacturing process is thus very time-consuming and leads to a large expansion of the coupling opening immediately to the loss of the entire filter housing.
  • the production of the filter according to the invention is much simpler, since a too large coupling opening can be compensated by the attachment of the recesses 9 in the housing bottom again.
  • the outer conductor housing With the desired size of the coupling openings, and any fault tolerances can then be compensated iteratively either by further widening of the coupling opening or by the attachment of corresponding depressions.
  • the recesses are hereby preferably milled by appropriate milling tools in the bottom of the outer conductor housing.
  • FIG. 2 shows a sectional view taken along the line II of Figure 1, but for the sake of better illustration, the inner conductor tubes 2 are not shown in section, but are shown over the entire surface by hatching.
  • the metallically conductive cover 10 is reproduced, which is placed on top of the outer conductor housing 1.
  • a capacitance is thus formed between the individual inner conductor tubes 2 and the cover 10, which has an influence on the resonance frequency.
  • further dielectric layers may be provided in the inner side of the cover 10, which cover the cross section of the inner conductor tubes in plan view of the filter.
  • an increase in the capacity and a reduction in the resonant frequency is achieved without the volume of construction must be increased.
  • the dielectric strength between inner conductor tube and cover is improved.
  • the individual inner conductor tubes 2 are galvanically connected to the bottom 1b of the housing 1.
  • the magnetic field at the lower end of the inner conductor tube is maximum during operation and minimal at the upper end of the inner conductor tube.
  • the electric field at the upper end of the inner conductor tube maximum and at the lower end of the inner conductor tube is minimal.
  • the aperture 4 in the X direction has a smaller width than the openings 3 and 5.
  • the recesses 9 are cylindrical in the embodiment described here and extend almost to the outside of the housing bottom 1b. By such depressions, a strong weakening of the coupling between adjacent resonators is achieved.
  • the geometric shape and depth as well as the position of the individual depressions can be variable.
  • elongated depressions in the form of a groove or rectangular depressions may also be used. These depressions can also have different depth profiles, in particular, the side walls of the wells can down taper, resulting in a circular depression to a conical profile shape of the recess.
  • the wells can also widen down.
  • a plurality of depressions may also be arranged between two adjacent inner conductor tubes 2.
  • the recesses may be arranged side by side and / or side by side and / or offset from each other in the X-direction and they may all have the same shape or partially the same shape or all different shapes.
  • the depressions or depressions 9 mentioned can be provided in the housing base 1b, especially in the region of the coupling opening, to achieve the desired advantages even if, for example, the housing bottom 1b is at a different level, for example by forming a threshold, step or kind of pedestal. as immediately adjacent to the inner conductors. It is so far on the pre-published US 4,307,357 directed.
  • FIG. 3 shows a view analogous to FIG. 1 of a high-frequency filter having recesses with different shapes.
  • an elongated depression 91 is provided between resonator R1 and R2, which extends in the Y direction.
  • a star-shaped recess 92 is formed and between the resonator R3 and R4 an obliquely extending, elongated recess 93 is arranged. All recesses 91, 92 and 93 are wholly or partially within the coupling openings between the adjacent resonators.
  • Figure 4 shows a view similar to Figure 2, wherein a filter with different depth profiles of the wells is shown.
  • the depression 94 between the resonator R1 and R2 is designed to be conical downwards, whereas the depression 95 between the resonator R2 and R3 has the shape of a dome.
  • the recess 96 between the resonator R3 and R4 has a V-shaped profile. All previously described geometric shapes, positions and profiles of the wells are merely exemplary and any shapes, orientations and profile configurations are possible, which can also be combined with each other arbitrarily.
  • the bottom surface 1b, 1b ' can also run at different levels in different regions of the high-frequency filter. If appropriate, this applies to the height level of the individual bottom surfaces 1b in each individual resonator in the immediate vicinity of the inner conductor 2, but especially in the region of the coupling opening.
  • the coupling opening may here be formed lying above the other level of the housing bottom 1b, so that in particular in the region of the coupling opening 3 a kind of step, threshold or a kind of platform is formed, so that the upwardly facing bottom surface 1b, here as the housing bottom 1b ' is designated, is higher than adjacent portions of the housing bottom provided with the reference numeral 1 b.
  • the width in the coupling direction of this higher-lying bottom 1b ' may correspond for example to the housing width of the coupling opening.
  • the bottom surface 1b 'in this region can also have a greater width or longitudinal extent than the thickness of the adjacent housing wall 1', ie the thickness of the housing wall 1 'adjacent to the coupling opening 3, protrudes.
  • the recesses of the recess 9 are also provided and introduced in order to achieve the desired explained improvements.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)

Claims (23)

  1. Filtre haute fréquence en mode de construction coaxial, avec les éléments suivants :
    - il comprend un boîtier de conducteur extérieur (1) pourvu d'un fond de boîtier (1b) et d'une paroi de boîtier (1a),
    - dans le boîtier de conducteur extérieur. (1) sont agencés plusieurs résonateurs (R1, R2, R3, R4),
    - les résonateurs (R1, R2, R3, R4) comprennent chacun un conducteur intérieur (2) électriquement couplé au fond de boîtier (1b) et prévu dans une cavité associée dans le boîtier de conducteur extérieur (1),
    - les cavités d'une partie au moins de résonateurs voisins (R1, R2, R3, R4) sont reliées les unes aux autres via au moins une ouverture de couplage (3, 4, 5) dans le boîtier de conducteur extérieur (1), et
    - deux résonateurs voisins (R1, R2, R3, R4) sont électriquement couplés l'un à l'autre uniquement au moyen des ouvertures de couplage (3, 4, 5), et
    - les ouvertures de couplage (3, 4, 5) représentent des diaphragmes qui sont chacun limités latéralement par deux saillies opposées (6, 7, 8) dans le boîtier (1), le couplage électrique entre des résonateurs voisins (R1, R2, R3, R4) dépendant de la taille des diaphragmes (3, 4, 5),
    caractérisé en ce qu'entre une partie au moins de gaines de conducteur intérieur (2) de résonateurs voisins (R1, R2, R3, R4) couplés entre eux, il est prévu un ou plusieurs renfoncements (9) réduisant le couplage dans le fond de boîtier (1b, 1b').
  2. Filtre haute fréquence selon la revendication 1, caractérisé en ce que un ou plusieurs renfoncements (9), vus de dessus sur le fond de boîtier (1b, 1b'), se trouvent au voisinage d'une ouverture de couplage (3, 4, 5) et/ou au moins partiellement à l'intérieur d'une ouverture de couplage (3, 4, 5).
  3. Filtre haute fréquence selon la revendication 2, caractérisé en ce que les surfaces des renfoncements (9), vues de dessus sur le fond de boîtier (1b), sont dimensionnées et/ou agencées de telle sorte que leurs surfaces se trouvent avec au moins 50 % et en particulier avec 70 % à 100 %, de préférence avec 80 % à 100 % à l'intérieur de la zone des ouvertures de couplage concernées (3, 4, 5).
  4. Filtre haute fréquence selon l'une des revendications précédentes, caractérisé en ce que plusieurs renfoncements (9) sont ménagés entre une partie au moins des conducteurs intérieurs (2) de résonateurs voisins (R1, R2, R3, R4) et sont disposés les uns à côté des autres en direction longitudinale du boîtier de conducteur extérieur (1) et/ou les uns à côté des autres en direction transversale du boîtier de conducteur extérieur (1) et/ou en décalage les uns par rapport aux autres en direction longitudinale et/ou en direction transversale du boîtier de conducteur extérieur (1).
  5. Filtre haute fréquence selon l'une des revendications précédentes, caractérisé en ce qu'il est prévu plusieurs renfoncements (9) parmi lesquels des renfoncements individuels sont distincts et diffèrent vis-à-vis de la forme géométrique, de la profondeur et/ou du profil en profondeur.
  6. Filtre haute fréquence selon l'une des revendications précédentes, caractérisé en ce qu'en vue de dessus sur le fond de boîtier (1b), un ou plusieurs des renfoncements (9) sont de forme rectangulaire, en particulier carrée.
  7. Filtre haute fréquence selon l'une des revendications précédentes, caractérisé en ce qu'en vue de dessus sur le fond de .boîtier (1b), un ou plusieurs des renfoncements (9) sont circulaires ou en forme d'étoile.
  8. Filtre haute fréquence selon l'une des revendications précédentes, caractérisé en ce qu'un ou plusieurs des renfoncements (9) présentent un profil en profondeur en forme de V et/ou en forme de U.
  9. Filtre haute fréquence selon l'une des revendications précédentes, caractérisé en ce que le profil en profondeur d'un ou de plusieurs des renfoncements (9) va en se rétrécissant et/ou en s'élargissant vers le bas.
  10. Filtre haute fréquence selon l'une des revendications précédentes, caractérisé en ce qu'un ou plusieurs des renfoncements (9) présentent un profil en profondeur cylindrique et/ou conique et/ou en forme de calotte.
  11. Filtre haute fréquence selon l'une des revendications précédentes, caractérisé en ce qu'un ou plusieurs des renfoncements (9) sont percés et/ou fraisés dans le fond de boîtier (1b).
  12. Filtre haute fréquence selon l'une des revendications précédentes, caractérisé en ce qu'une partie au moins des gaines de conducteur intérieur (2) sont reliées à leurs extrémités inférieures par voie galvanique au fond de boîtier (1b, 1b').
  13. Filtre haute fréquence selon l'une des revendications précédentes, caractérisé en ce qu'une partie au moins des conducteurs intérieurs (2) présentent une forme cylindrique et/ou une forme rectangulaire et/ou une forme hexagonale ou polygonale.
  14. Filtre haute fréquence selon l'une des revendications précédentes, caractérisé en ce que la longueur d'une partie au moins des conducteurs intérieurs (2) est sensiblement de 1/4 de la longueur d'onde de la fréquence de résonance du résonateur (R1, R2, R3, R4) appartenant à la gaine de conducteur intérieur (2).
  15. Filtre haute fréquence selon l'une des revendications précédentes, caractérisé en ce que sur le côté supérieur du boîtier de conducteur extérieur (1) est agencé un couvercle (10) électriquement conducteur.
  16. Filtre haute fréquence selon l'une des revendications précédentes, caractérisé en ce que les résonateurs (R1, R2, R3, R4) sont réalisés et couplés de manière à former un aiguillage duplex.
  17. Filtre haute fréquence selon l'une des revendications précédentes, caractérisé en ce que les résonateurs (R1, R2, R3, R4) sont réalisés et couplés de manière à former un filtre passe-bande ou un filtre coupe-bande.
  18. Filtre haute fréquence selon l'une des revendications précédentes, caractérisé en ce qu'un filtre est configuré de manière à fonctionner dans la gamme de fréquence de radiotéléphonie mobile, en particulier dans la gamme de fréquence de radiotéléphonie mobile GSM et/ou UMTS.
  19. Filtre haute fréquence selon l'une des revendications précédentes, caractérisé en ce que le fond de boîtier (1b) dans le filtre haute fréquence peut se trouver localement à différents niveaux, et en ce qu'en particulier le fond de boîtier (1b, 1b') dans la zone des renfoncements ou des creux (9) se trouve plus haut ou plus bas par rapport aux zones voisines du fond de boîtier (1b), en particulier par rapport au niveau du fond de boîtier (1b) dans la zone immédiatement voisine du conducteur intérieur (2).
  20. Procédé pour accorder les propriétés haute fréquence d'un filtre haute fréquence selon le préambule de la revendication 1, caractérisé en ce que pour atténuer le couplage électrique de résonateurs voisins (R1, R2, R3, R4) entre une partie au moins des conducteurs intérieurs (2) de résonateurs voisins (R1, R2, R3, R4), il est prévu un ou plusieurs renfoncements (9) ménagés dans le fond de boîtier (1b).
  21. Procédé selon la revendication 20, caractérisé en ce qu'un ou plusieurs des renfoncements (9) sont percés et/ou fraisés dans le fond de boîtier (1b).
  22. Procédé selon la revendication 20 ou 21, caractérisé en ce que pour amplifier le couplage électrique de résonateurs voisins (R1, R2, R3, R4), une ou plusieurs ouvertures de couplage (3, 4, 5) dans le boîtier de conducteur extérieur (1) sont agrandies en particulier par fraisage.
  23. Procédé selon l'une des revendications 20 à 22, caractérisé en ce que plusieurs renfoncements (9) sont percés et/ou fraisés dans le fond de boîtier (1b) parmi lesquels au moins des renfoncements individuels (9) présentent différentes formes géométriques et/ou différentes profondeurs et/ou différents profils en profondeur.
EP05795621A 2004-11-18 2005-10-06 Filtre haute frequence Not-in-force EP1812986B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004055707A DE102004055707B3 (de) 2004-11-18 2004-11-18 Hochfrequenzfilter und Verfahren zur Abstimmung der Hochfrequenzeigenschaften eines Hochfrequenzfilters
PCT/EP2005/010781 WO2006053607A1 (fr) 2004-11-18 2005-10-06 Filtre haute frequence

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EP1812986A1 EP1812986A1 (fr) 2007-08-01
EP1812986B1 true EP1812986B1 (fr) 2008-01-23

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EP05795621A Not-in-force EP1812986B1 (fr) 2004-11-18 2005-10-06 Filtre haute frequence

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EP (1) EP1812986B1 (fr)
CN (1) CN101076917B (fr)
AT (1) ATE385051T1 (fr)
DE (2) DE102004055707B3 (fr)
ES (1) ES2299094T3 (fr)
WO (1) WO2006053607A1 (fr)

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Publication number Priority date Publication date Assignee Title
DE102006033704B3 (de) 2006-07-20 2008-01-03 Kathrein-Werke Kg Hochfrequenzfilter in koaxialer Bauweise, insbesondere nach Art einer Hochfrequenzweiche (z.B. einer Duplex-Weiche) oder eines Bandpassfilters oder Bandsperrfilters
US7777593B2 (en) 2006-12-27 2010-08-17 Kathrein-Werke Kg High frequency filter with blocking circuit coupling
DE102013020428A1 (de) 2013-12-05 2015-06-11 Kathrein-Werke Kg Hochfrequenzfilter in koaxialer Bauweise
JP6372413B2 (ja) * 2014-07-07 2018-08-15 株式会社村田製作所 フィルタ装置

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US3516030A (en) * 1967-09-19 1970-06-02 Joseph S Brumbelow Dual cavity bandpass filter
JPS5390741A (en) * 1977-01-21 1978-08-09 Nec Corp Band pass filter
US4307357A (en) * 1980-03-04 1981-12-22 Tektronix, Inc. Foreshortened coaxial resonators
US4342969A (en) * 1980-10-06 1982-08-03 General Electric Company Means for matching impedances between a helical resonator and a circuit connected thereto
US5329687A (en) * 1992-10-30 1994-07-19 Teledyne Industries, Inc. Method of forming a filter with integrally formed resonators
JPH07245513A (ja) * 1994-03-07 1995-09-19 Sumitomo Metal Ind Ltd 高周波用誘電体共振器及びその共振周波数の調整方法
US5894250A (en) * 1997-03-20 1999-04-13 Adc Solitra, Inc. Cavity resonator filter structure having improved cavity arrangement
FI982551A (fi) * 1998-06-11 1999-12-12 Lk Products Oy Yhtenäisistä kappaleista muodostuva suurtaajuussuodatin
US6081175A (en) * 1998-09-11 2000-06-27 Radio Frequency Systems Inc. Coupling structure for coupling cavity resonators
US6064285A (en) * 1998-12-11 2000-05-16 Wavecom Electronics Inc Printed circuit board helical resonator and filter apparatus
DE19901265C1 (de) * 1999-01-15 2000-06-08 Bosch Gmbh Robert Hohlraumresonator mit Mitteln zur Abstimmung seiner Resonanzfrequenz
US6611183B1 (en) * 1999-10-15 2003-08-26 James Michael Peters Resonant coupling elements

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Publication number Publication date
EP1812986A1 (fr) 2007-08-01
ES2299094T3 (es) 2008-05-16
CN101076917A (zh) 2007-11-21
WO2006053607A1 (fr) 2006-05-26
DE502005002703D1 (de) 2008-03-13
WO2006053607A8 (fr) 2007-06-14
ATE385051T1 (de) 2008-02-15
CN101076917B (zh) 2011-08-31
DE102004055707B3 (de) 2006-04-27

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