EP2656435B1 - Filtre haute fréquence réglable - Google Patents

Filtre haute fréquence réglable Download PDF

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Publication number
EP2656435B1
EP2656435B1 EP20110810795 EP11810795A EP2656435B1 EP 2656435 B1 EP2656435 B1 EP 2656435B1 EP 20110810795 EP20110810795 EP 20110810795 EP 11810795 A EP11810795 A EP 11810795A EP 2656435 B1 EP2656435 B1 EP 2656435B1
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EP
European Patent Office
Prior art keywords
tuning element
end wall
frequency filter
conductor
filter
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EP20110810795
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German (de)
English (en)
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EP2656435A1 (fr
Inventor
Thomas Haunberger
Manfred Stolle
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Kathrein SE
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Kathrein Werke KG
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Publication of EP2656435A1 publication Critical patent/EP2656435A1/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
    • H01P1/202—Coaxial filters
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P7/00—Resonators of the waveguide type
    • H01P7/04—Coaxial resonators

Definitions

  • the invention relates to a high-frequency filter in coaxial design according to the preamble of claim 1.
  • 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.
  • high frequency filters in coaxial design are used today.
  • a pair of high frequency filters may be used, both of which are a particular frequency band let through (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 blocks other filter frequencies below a frequency between transmit and receive bands and overlying frequencies lets through (high-pass filter).
  • Other combinations of the just mentioned filter types are conceivable.
  • High-frequency filters are often constructed from coaxial resonators, since they consist of milling or casting parts, whereby they are easy to produce. In addition, these resonators ensure a high electrical quality and a relatively high temperature stability.
  • EP 1 776 733 B1 describes an example of a coaxial RF filter.
  • This filter comprises an outer conductor pot, which is applied to a metallized base plate, and in which an inner conductor is arranged.
  • a region of the substrate is excluded from a metallization, so that the part of the inner conductor which contacts the substrate is galvanically isolated from the outer conductor pot.
  • the opposite end of the inner conductor is galvanically connected at the opposite end of the inner conductor pot with this.
  • the filter further includes on the opposite side of the substrate a stripline electrically coupled to the resonator.
  • the EP 2 044 648 B1 describes an example of a coaxial RF filter.
  • This filter comprises a resonator with an inner conductor and an outer conductor, wherein in a terminal wall of the resonator, a tuning element is provided which has an external thread.
  • a threaded receptacle is provided with an internal thread.
  • the thread pitch of the external thread of the Abstimmelements differs from the thread pitch of the internal thread of the threaded receptacle in at least a portion of the internal thread and the external thread, whereby an automatic self-locking of the Abstimmelements is realized.
  • a coaxial RF filter is in the document EP 1 169 747 B1 described.
  • This filter comprises a resonator with a cylindrical inner conductor and a cylindrical outer conductor, wherein between a free end of the inner conductor and a cover attached to the outer conductor, a capacitance is formed which has an influence on the resonance frequency.
  • the resonator comprises a tuning element of dielectric material, with which the resonance frequency of the filter is adjustable.
  • the tuning element is movable in the inner conductor of the resonator, so that the side of the Abstimmelements facing the lid has different distances to the lid, whereby the capacitance between the free end of the inner conductor and the lid of the resonator is changed, which in turn varies the resonant frequency.
  • the DE 38 12 782 A1 describes a cavity or coaxial resonator.
  • the coaxial resonator comprises a pot-like body with two opposite end walls, namely with a first end wall and with one of these opposite and spaced second end wall, between which a housing wall is provided circumferentially.
  • a hollow cylinder is electrically connected to the first end wall, extending from the first end wall perpendicular to the second end wall and ends at a distance from the second end wall.
  • a piston connected to a punch protrudes through the second end wall in the direction of the first end wall and ends above the front end of the hollow cylinder.
  • a tuning element is provided in a variable position in a longitudinal recess of the hollow cylinder and comprises an insulation pin which is provided between a part of the tuning element with external thread and a Abstimmstkov for isolation of the Abstimmstkovs.
  • the isolation pin is provided in the upper part of the Abstimmstkovs and the tuning element is in its axial position variable in position and accessible from the outside of the first end wall to effect an axial position change.
  • two pairs of tubular magnets are mounted, on which a magnetic field generated by a coil arranged adjacent thereto can exert a force, whereby by energizing the coil, the piston and the punch are changed in their axial position.
  • the US 4,380,747 describes a high frequency filter having a first end wall and a second end wall spaced therefrom.
  • a metal finger provided with a longitudinal recess is galvanically connected to the first end wall and extends perpendicularly from the first end wall toward the second end wall.
  • the metal finger ends at a distance from the second end wall.
  • a pin-like and projecting towards the first end wall filter housing is screwed by means of an external thread in the second end wall and thereby electrically connected to this / galvanic.
  • the filter housing ends at the level of the front end of the metal finger or immersed in the formed in the metal finger longitudinal recess.
  • a tuning bolt is longitudinally movably provided in the filter housing.
  • the hollow finger can be movable and the designated as a finger filter housing with the tuning pin is then fixed in the second end wall.
  • the tuning pin is then movable in the stationary finger and thus operable from the top of the radio frequency filter.
  • a tuning of the coaxial high-frequency filter with a tuning element is necessary due to manufacturing tolerances.
  • coaxial RF filters of the prior art the vote on metal screws or combinations of metal screws and plastic elements.
  • Resonator housings made of aluminum require press-fit threads for receiving the corresponding tuning elements, since aluminum is too soft for fine threads, so that the thread of the adjustment element can seize firmly.
  • the tuning elements in the prior art coaxial RF filters are arranged at high frequency critical locations so that currents also flow over the contact area of the external thread of the tuning member and the internal thread of the resonator housing. This leads to intermodulation problem areas, since there are insufficient contact pressures in the thread.
  • a first pin-shaped or stiffener-like first tuning element projecting in the direction of a first end wall, which is electrically / galvanically connected to a second end wall of the resonator, mechanically anchored in its axial length unchanged and rotationally fixed in the second end wall.
  • a preferably tubular or tube-like position-adjustable second tuning element is provided, which consists of a dielectric material at least in the region facing the second outer wall.
  • This second tuning element is variable in position in the clearance space between the inner surface of the inner conductor and the first tuning element in its axial position. In this case, the second tuning element is accessible from the outside of the first end wall to effect this axial position change or actuated.
  • the one-piece second tuning elements which are at least partially made of dielectric material, are thus arranged in terms of intermodulation effects uncritical locations in the coaxial resonator, whereby a vote of the coaxial resonator via the second tuning element, accessible via the first end wall or over the bottom of the coaxial resonator and variable position is.
  • the designated as Abstimmnagel first tuning element is soldered or contacted in the coaxial resonator, so that no intermodulation problems occur at the corresponding contact points.
  • the second tuning element is accessible via the bottom side or the side of the first end wall, and the axial position of the second Abstimmelements is effected via actuation of the second Abstimmelements on the bottom side or on the side of the first end wall.
  • the filter characteristic or the electrical parameters of the coaxial high-frequency resonator are adjusted and / or changed and / or corrected with the adjustable second tuning elements, without causing intermodulation problems, since no galvanic connection between the tuning pins or bolts, which are referred to as first tuning elements , and the second tuning elements are present.
  • the length of the tuning nails or the first tuning elements is preselected so that the fine tuning of the coaxial high-frequency filter by means of the second tuning elements only takes place at the ends of the tuning nails. Therefore, no quality losses of the high-frequency filter are to be expected.
  • the solution according to the invention offers the advantage that the second tuning elements additionally assume a mechanical support or a centering of the tuning nails or the first tuning elements. This additionally increases the mechanical stability of the high-frequency filter.
  • the solution according to the invention is less expensive to produce, since only simple turned parts are used as tuning nips or as first tuning elements instead of costly tuning pins with special threads.
  • the second tuning elements are inexpensive to produce as molded parts and can be attached with simple measures and changed in its axial position.
  • the second end wall or the cover of the resonator comprises a dielectric plate material, on the outside of which a ground surface is provided, to which the first tuning element is electrically / galvanically connected.
  • the ground surface may alternatively also be arranged in the dielectric plate material.
  • the outside of the second end wall or of the cover is the side of the second end wall or the cover facing away from the first end wall.
  • a strip conductor pattern is provided on the inside of the second end wall.
  • the stripline structure preferably has a coupling surface in which a recess which is electrically / galvanically isolated from the coupling surface is provided.
  • the coupling surface is arranged on the inside of the first end wall so that the coupling surface of the end face of the inner conductor is opposite.
  • the first tuning element protrudes through the recess in the inner conductor.
  • the coaxial resonator is thus coupled via the coupling surfaces of the inner conductor to the strip conductor structure of the first end wall or the lid, which may also be configured as a circuit board.
  • the second end wall can thus be equipped as a board on which a fitting or filter structure is applied.
  • the fitting or filter structure is arranged on the inner side of the filter.
  • the ground surface is provided on which the Abstimmnägel are attached.
  • the stubs are because of the Filter quality designed as coaxial resonators.
  • the second tuning element has a blind bore or through bore extending in the longitudinal direction of the second tuning element, and the second tuning element is so variable in position within the longitudinal recess in the inner conductor of the resonator in its axial position relative to the first tuning element that the first tuning element extends into the blind bore differently .
  • Through hole of the second Abstimmelements is submerged.
  • the first tuning element and the second end wall or the lid of the resonator is connected by a compression or by a soldering or by a weld.
  • the first tuning element and the second end wall can preferably also be integrally formed.
  • the outer conductor housing of the resonator may preferably be formed integrally with the inner conductor, in particular as a milling, turning or greeting part, so that no intermodulation problems occur due to joints in the filter.
  • the outer conductor housing and / or the inner conductor and / or the first tuning element made of plastic, wherein the respective outer surfaces are metallized.
  • the second tuning element an external thread and the inner conductor and / or a recess of the first end wall have a corresponding internal thread, wherein the second tuning element is connected and held on the external thread with the internal thread of the inner conductor and / or the recess of the first end wall.
  • the coefficient of thermal expansion of the second tuning element can deviate from the thermal expansion coefficient of the inner conductor or of the outer conductor housing.
  • the thermal expansion coefficient of the second tuning element is preferably smaller than the thermal expansion coefficient of the inner or outer conductor.
  • the second tuning element preferably comprises a ceramic material.
  • air is provided as a dielectric between the inner conductor and the housing wall of the outer conductor housing.
  • the strip conductor structure having a number of coupling surfaces corresponding to the number of resonators, which are electrically / galvanically connected to one another by means of a conductor track are connected.
  • the respective coupling surfaces are arranged on the inside of the board so that they are positioned opposite the end faces of the inner conductor.
  • the plurality of resonators may preferably have different sizes. Accordingly, the resonators may preferably be designed and coupled such that a duplexer is formed.
  • a resonator of a high-frequency filter according to the invention may be designed such that a band-pass filter and / or a band-stop filter is formed.
  • the above-described filters can be used for the range between 790 MHz to 862 MHz (digitally released frequency bands, also referred to as digital dividend) and for the range between 870 MHz to 960 MHz (GSM 900) and in the range of 1,800 MHz mobile frequency and / or the 2,000 MHz mobile radio frequency.
  • FIGS. 1 to 3 is in axial longitudinal section or axial cross-section or in cross-section thereto in a schematic representation of a high-frequency filter 1 with three resonators 2a, 2b, 2c shown in coaxial technology.
  • a single resonator 2a, 2b, 2c in coaxial technology will also be referred to briefly as a coaxial resonator or coaxial filter.
  • a coaxial type high frequency filter 1 may also comprise more or less than the three coaxial filters or single resonators shown.
  • FIG. 1 the structure of a single resonator 2a, 2b, 2c shown by way of example on the resonator 2b shown in the center, wherein the adjacent resonators 2a, 2c are constructed in the same or similar manner.
  • the coaxial resonator 2a, 2b, 2c included in the high-frequency filter 1 comprises an outer conductor housing with two opposite end walls 21, 22, namely a first end wall 21 and second end wall 22 spaced therefrom.
  • the first end wall 21 may alternatively also be referred to as bottom of the coaxial resonator 2a, 2b, 2c.
  • the second end wall 22 may alternatively be referred to as cover 22 of the coaxial resonator 2a, 2b, 2c.
  • the cover 22 may be configured as a circuit board 22.
  • a housing wall 23 is provided circumferentially, which in FIG. 3 partially shown. In FIG.
  • the coaxial resonator 2a, 2b, 2c further comprises an inner conductor 30, which in the in the FIGS. 1 to 3 illustrated embodiment is designed as inner conductor tube.
  • the inner conductor 30 and the first end wall 21 are integrally formed.
  • the inner conductor 30 and the first end wall 21 may also be formed in two pieces and be connected to each other, for example by welding, soldering or for example by compression.
  • the inner conductor 30 is galvanically connected to the first end wall 21 and extends perpendicularly from the first end wall 21 in the direction of the second end wall 22, wherein the inner conductor 30 does not contact the second end wall 22. Therefore, the inner conductor 30 is galvanically separated from the lid 22.
  • a galvanic separation of the inner conductor 30 from the cover 22 could also be achieved in that at a contact point of the inner conductor 30 with the second end wall 22 of the inner conductor 30 from a dielectric material or the lid 22 is at a point of contact with the inner conductor 30 made of a dielectric material.
  • the electrical isolation between the inner conductor 30 and the second end wall 22 is achieved in that the inner conductor 30 does not contact the second end wall 22.
  • the second end wall 22 is designed as a circuit board 22.
  • a ground surface 221 is applied on the outside of the board 22.
  • the outside of the board 22 is the side of the board 22 facing away from the first end wall 21.
  • the ground area could also be arranged in the board 22 or in the dielectric board material.
  • a strip conductor pattern 222 is applied, which in FIG. 4 is shown in a plan view.
  • the stripline structure 222 comprises at least one coupling surface 222a, in which a recess 222c is provided.
  • the coupling surface 222a is arranged on the inside of the board 22 so that the coupling surface 222a of the end face of the inner conductor 30 is arranged opposite.
  • the coaxial resonator is thus coupled via the coupling surfaces of the end face of the inner conductor 30 to the strip conductor pattern 222 of the board 22.
  • the first tuning element 40 protrudes through the recess 222c, which is electrically / galvanically separated from the coupling surface 222a.
  • the stripline structure 222 comprises three coupling surfaces 222a.
  • the coupling surfaces 222a are each electrically / galvanically connected to each other by interconnects 222b.
  • interconnects 222b In the in the FIGS. 1 and 3 illustrated embodiment of the high-frequency filter 1 are thus the end faces of each of the inner conductor 30 of the individual resonators 2a, 2b, 2c opposite to a coupling surface 222a of the strip conductor pattern 222 arranged opposite one another.
  • the individual resonators 2a, 2b, 2c thus represent stub lines on the strip conductor pattern 222.
  • the coaxial resonator 2a, 2b, 2c further comprises a pin-shaped or pin-like tuning pin or a first tuning element 40, which projects in the direction of the bottom 21 of the coaxial resonator 2a, 2b, 2c.
  • This first tuning element 40 is electrically / galvanically connected to the ground surface 221 of the second end wall 22.
  • the electrical / galvanic connection can also be realized by a connecting line on or outside the second end wall 22, in particular if the second end wall consists of a dielectric substrate.
  • the second end wall 22 is made of a dielectric material
  • the outer surface of the board 22 is provided with a ground plane, and on the inner side of the board 22, a fitting or Filter structure 222 may be applied.
  • the first tuning pins 40 are electrically connected to the ground plane 221 on the outside of the board 22.
  • the first tuning element 40 is shown as a hollow body. However, the first tuning element 40 can also be made massive. In the Figures 1 and 2 the first tuning element 40 dips into a longitudinal recess 301 formed in the inner conductor tube 30. However, the first tuning element 40 may end at the level of the front end of the inner conductor 30.
  • the coaxial resonator 2a, 2b, 2c further comprises, in the embodiment shown, a tubular or tube-like and position-variable second tuning element 50, which is arranged in the longitudinal recess 301 of the inner conductor 30.
  • the second tuning element 50 has a blind bore 501 extending in the longitudinal direction of the second tuning element 50, and the second tuning element 50 is so variable within the longitudinal recess 301 in the inner conductor 30 in its axial position relative to the first tuning element 40 or to the tuning nail 40 that the first tuning element 40 can diverge widely into the blind bore 501 of the second Abstimmelemnts 50.
  • a through hole 501 may also be provided in the second tuning element 50.
  • the present invention is not limited to a corresponding configuration of the second tuning element 50.
  • the second tuning element 50 may have any shape that ensures that the second tuning element 50 in the distance space between the inner surface of the inner conductor 30 and the first tuning element 40 is variable in position in its axial position. Conceivable, for example, would be concentrically arranged tuning pins, which are adjustable in their axial position relative to the first tuning element 40.
  • second tuning element 50 is made of a dielectric material.
  • the second tuning element 50 can also consist of a metallic material, wherein the second tuning element 50 at least in the second outer wall 22 and the first tuning element 40 adjacent facing region consists of a dielectric material.
  • This dielectric material may be any type of plastic, but may also include a ceramic material.
  • the second tuning element 50 comprises an external thread 502, via which the second tuning element 50 is connected to an internal thread 302 in the interior of the inner conductor 30 and held.
  • the second tuning element 50 is changed in its axial position, so that the first tuning element 40 dips differently far into the blind bore 501 of the second tuning element 50.
  • Rotation of the second tuning element 50 can be effected, for example, by introducing a rotary tool into the engagement 51 of the second tuning element 50.
  • the second tuning member 50 is accessible and operable from the outside of the first end wall 21 to effect an axial displacement.
  • the present invention is not limited thereto.
  • the second tuning element 50 could be connected via a slide bearing with the inner conductor 30 and pushed through a corresponding actuator differently far into the longitudinal recess 301 of the inner conductor into or pulled out, so that the first tuning element 40 different far into a corresponding blind bore 501 or through hole 501 of the second Abstimmelements 50th dips.
  • the first tuning element 40 is in contact with the blind bore 501 of the second tuning element 50. Consequently, the second tuning element 50 can also serve as a mechanical support or as a mechanical centering of the first tuning element 40, whereby the mechanical stability of a correspondingly constructed coaxial resonator 2a, 2b, 2c is increased.
  • FIGS. 1 to 3 illustrated embodiment is provided between the inner conductor 30 and the housing wall 23 of the outer conductor housing air as a dielectric.
  • another gaseous dielectric may also be provided between the inner conductor 30 and the housing wall 23.
  • the high-frequency filter 1 comprises at least three coaxial resonators 2a, 2b, 2c, which are arranged linearly adjacent to each other and adjacent. These resonators 2a, 2b, 2c are connected to one another via a common first end wall 21.
  • the first tuning element 40a in the coaxial resonator 2a shown on the left has a greater length than the first tuning elements 40b in FIG middle coaxial resonator 2b or as the first tuning element 40c in the coaxial resonator 2c shown on the right.
  • the resonance characteristics in the corresponding high-frequency filter 1 can be preset and finely adjusted by the respective second tuning elements 50a, 50b, 50c. Thereby, the transmission and blocking characteristics of the high-frequency filter 1 can be roughly and finely adjusted.
  • the resonators 2 a, 2 b and 2 c are each separated by partitions 24.
  • These partitions 24 need not necessarily extend completely from the first end wall 21 to the second wall 22, but may have a recess (aperture). This recess serves to ensure that the partitions 24 do not come into contact with the fitting or filter structures 222 arranged on the inside of the second end wall 22 configured as a board 22, which would impair the function of the printed circuit board structure 222.
  • the filter properties of the high-frequency filter 1 can be adjusted.
  • the inner conductors 30 are shown with a square cross-section.
  • the inner conductors 30 may also have other shapes, such as, for example, a cylindrical shape having a round or elliptical cross section.
  • the cross-section of a corresponding inner conductor 30 may be hexagonal, octagonal or octagonal.
  • the first tuning element 40 which in the FIGS. 1 to 3 is shown with a circular cross-section.
  • the first tuning element 40 can but also have a square or hexagonal or octagonal or zehneckigen cross-section.
  • the second tuning element 50 may have a corresponding geometry, so that the second tuning element 50 in the longitudinal recess 301 of the inner conductor 30 can be axially displaced with contact with the inner walls of the inner conductor 30.

Claims (18)

  1. Filtre à hautes fréquences (1) dans une construction coaxiale, comprenant un ou plusieurs résonateurs (2a, 2b, 2c), au moins un des résonateurs (2a, 2b, 2c) comportant les caractéristiques suivantes :
    - un boîtier de conducteur extérieur avec deux parois d'arrêt opposées (21, 22), à savoir avec une première paroi (21) et une seconde paroi (22) espacée de la première, entre lesquelles une paroi de boîtier (23) circulant est prévue,
    - avec un conducteur intérieur (30), qui est agencé comme conduit de conducteur intérieur,
    - le conducteur intérieur (30) est relié de façon galvanique à la première paroi d'arrêt (21) et s'étend transversalement de la première paroi d'arrêt (21) et de préférence verticalement dans le sens de la seconde paroi d'arrêt (22),
    - le conducteur intérieur (30) se termine à distance de la seconde paroi d'arrêt (22) et/ou en est séparé de façon galvanique,
    - avec un premier élément de syntonisation (40) en forme de ou similaire à une pointe dépassant dans le sens de la première paroi d'arrêt (21), lequel élément est relié de façon électrique/galvanique à la seconde paroi d'arrêt (22),
    - le premier élément de syntonisation (40) plonge dans un évidement longitudinal (301) formé dans le conduit de conducteur interne (30),
    caractérisé par les autres caractéristiques suivantes :
    - le premier élément de syntonisation (40) n'est pas modifiable dans sa longueur axiale et est fixé mécaniquement de façon à ne pas tourner dans la seconde paroi d'arrêt (22),
    - un second élément de syntonisation (50) à position variable est prévu dans l'évidement longitudinal (301) du conducteur interne (30), le second élément de syntonisation (50) se composant au moins d'un matériel diélectrique ou comprenant un matériel diélectrique dans une zone opposée à la seconde paroi externe (22),
    - le second élément de syntonisation (50) peut changer de position dans un espace entre la surface interne du conducteur interne (30) et le premier élément de syntonisation (40) dans sa position axiale,
    - le second élément de syntonisation (50) est accessible et/ou peut être actionné depuis le côté externe de la première paroi d'arrêt (21) pour entraîner un changement de position axiale.
  2. Filtre à hautes fréquences (1) selon la revendication 1, caractérisé en ce que la seconde paroi d'arrêt (22) comprend un matériau en feuille diélectrique, sur le côté externe duquel une surface à la masse (221) est prévue, avec laquelle le premier élément de syntonisation (40) est relié de façon électrique/galvanique.
  3. Filtre à hautes fréquences (1) selon la revendication 1 ou 2, caractérisé en ce qu'une structure à ligne à bande (222) est prévue sur le côté interne de la seconde paroi d'arrêt (22).
  4. Filtre à hautes fréquences (1) selon la revendication 3, caractérisé en ce que la structure à ligne à bande (222) comporte une surface de couplage (222a), dans laquelle un évidement (222c) séparé de façon électrique/galvanique de la surface de couplage (222a) est prévu, la surface de couplage (222a) étant disposée sur le côté interne de la seconde paroi d'arrêt (22) à l'opposé du côté avant du conducteur interne (30), et le premier élément de syntonisation (40) dépassant de l'évidement (222c) dans le conducteur interne (30).
  5. Filtre à hautes fréquences (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que la seconde paroi d'arrêt (22) est conçue comme une platine (22).
  6. Filtre à hautes fréquences (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que le second élément de syntonisation (50) comporte un alésage à trous borgnes ou un alésage de passage (501) dans le sens de la longueur du second élément de syntonisation (50) et en ce que le second élément de syntonisation (50) peut changer de position dans sa position axiale par rapport au premier élément de syntonisation (40) dans l'évidement longitudinal (301) du conducteur interne (30), de sorte que le premier élément de syntonisation (40) n'est pas plongé à la même distance dans l'alésage à trous borgnes (501) ou l'alésage de passage (501) que le second élément de syntonisation (50).
  7. Filtre à hautes fréquences (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que le premier élément de syntonisation (40) et la seconde paroi d'arrêt (22) sont reliés par pressage ou par brasage ou par soudage, ou en ce que le premier élément de syntonisation (40) et la seconde paroi d'arrêt (22) sont formés d'une seule pièce.
  8. Filtre à hautes fréquences (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que le boîtier de conducteur externe est conçu d'une seule pièce avec le conducteur interne (30), plus particulièrement comme partie de fraisage, de couplage ou de coulage.
  9. Filtre à hautes fréquences (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que le boîtier de conducteur externe et/ou le conducteur interne (30) et/ou le premier élément de syntonisation (40) est/sont en plastique, les surfaces externes correspondantes étant métallisées.
  10. Filtre à hautes fréquences (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que le second élément de syntonisation (50) comporte un filetage externe (502), par lequel le second élément de syntonisation (50) est relié à un filetage interne (302) à l'intérieur du conducteur interne (30) et/ou à un évidement de la première paroi d'arrêt (21) et maintenu.
  11. Filtre à hautes fréquences (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que le coefficient d'élargissement thermique du second élément de syntonisation (50) diffère du coefficient d'élargissement thermique du conducteur interne (30) ou du boîtier du conducteur externe.
  12. Filtre à hautes fréquences (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que le second élément de syntonisation (50) comprend un matériau céramique.
  13. Filtre à hautes fréquences (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que de l'air est prévu comme moyen diélectrique entre le conducteur interne (30) et la paroi du boîtier (23) du boîtier du conducteur externe.
  14. Filtre à hautes fréquences (1) selon l'une quelconque des revendications 4 à 13, caractérisé en ce que plusieurs résonateurs (2a, 2b, 2c) sont prévus, la structure à ligne à bande (222) comportant un nombre de résonateurs (2a, 2b, 2c) correspondant au nombre de surfaces de couplage (222a), qui sont reliés de façon électrique/galvanique les uns aux autres au moyen d'une piste conductive (222b).
  15. Filtre à hautes fréquences (1) selon la revendication 14, caractérisé en ce que les résonateurs (2a, 2b, 2c) ont des tailles différentes.
  16. Filtre à hautes fréquences (1) selon la revendication 14 ou 15, caractérisé en ce que les résonateurs (2a, 2b, 2c) sont conçus et couplés, de sorte qu'un filtre de bande double est formé.
  17. Filtre à hautes fréquences (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que un résonateur au moins (2a, 2b, 2c) est conçu, de sorte qu'un filtre à bande passante et/ou un filtre à suppression de bande est formé.
  18. Filtre à hautes fréquences (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que le filtre fonctionne dans une plage comprise entre 790 MHz et 862 MHz et/ou dans une plage comprise entre 870 MHz et 960 MHz et/ou dans une plage de fréquence radio de 1800 MHz et/ou de 2000 MHz.
EP20110810795 2010-12-23 2011-12-15 Filtre haute fréquence réglable Active EP2656435B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010056048A DE102010056048A1 (de) 2010-12-23 2010-12-23 Abstimmbares Hochfrequenzfilter
PCT/EP2011/006357 WO2012084154A1 (fr) 2010-12-23 2011-12-15 Filtre haute fréquence syntonisable

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EP2656435A1 EP2656435A1 (fr) 2013-10-30
EP2656435B1 true EP2656435B1 (fr) 2015-04-22

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US (1) US8947179B2 (fr)
EP (1) EP2656435B1 (fr)
KR (1) KR101663534B1 (fr)
CN (1) CN103262338B (fr)
AU (1) AU2011348462B2 (fr)
DE (1) DE102010056048A1 (fr)
HK (1) HK1186301A1 (fr)
HU (1) HUE025345T2 (fr)
WO (1) WO2012084154A1 (fr)

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WO2016174422A2 (fr) * 2015-04-28 2016-11-03 David Rhodes Résonateur à micro-ondes accordable en mode transverse électromagnétique et filtre à micro-ondes accordable
KR102324960B1 (ko) 2015-06-25 2021-11-12 삼성전자 주식회사 통신 장치 및 이를 포함하는 전자 장치
US10581133B2 (en) 2015-07-06 2020-03-03 Commscope Italy, S.R.L. Resonant cavity filters with high performance tuning screws
DE102015008894A1 (de) 2015-07-09 2017-01-12 Kathrein-Werke Kg Gewindelose Abstimmelemente für Koaxialresonatoren und Verfahren zur Abstimmung derselben
CN111509341B (zh) * 2015-11-13 2021-12-07 康普公司意大利有限责任公司 调谐元件、装置、滤波器组件以及对滤波器进行调谐的方法
US10050323B2 (en) 2015-11-13 2018-08-14 Commscope Italy S.R.L. Filter assemblies, tuning elements and method of tuning a filter
EP3179552B1 (fr) * 2015-12-10 2020-06-10 Alcatel Lucent Ensemble résonateur, filtre de fréquences radio et procédé de filtrage de fréquences radio
DE102016000092B4 (de) 2016-01-07 2020-07-30 Telefonaktiebolaget Lm Ericsson (Publ) Verfahren zum Zusammenstellen von Hochfrequenzfiltern
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CN111641013A (zh) * 2020-06-12 2020-09-08 中国电子科技集团公司第二十六研究所 一种螺旋式的高性能介质波导滤波器及通信设备
CN112073022B (zh) * 2020-08-18 2023-10-13 安徽蓝麦通信股份有限公司 一种带通滤波器

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Publication number Publication date
HK1186301A1 (zh) 2014-03-07
HUE025345T2 (en) 2016-02-29
US8947179B2 (en) 2015-02-03
AU2011348462A1 (en) 2013-05-30
WO2012084154A1 (fr) 2012-06-28
DE102010056048A1 (de) 2012-06-28
US20130271243A1 (en) 2013-10-17
CN103262338A (zh) 2013-08-21
CN103262338B (zh) 2016-02-03
KR101663534B1 (ko) 2016-10-10
KR20130140724A (ko) 2013-12-24
EP2656435A1 (fr) 2013-10-30
AU2011348462B2 (en) 2015-07-30

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