EP0556573B1 - Résonateur diélectrique et procédé de réglage de sa caractéristique - Google Patents

Résonateur diélectrique et procédé de réglage de sa caractéristique Download PDF

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Publication number
EP0556573B1
EP0556573B1 EP19930100741 EP93100741A EP0556573B1 EP 0556573 B1 EP0556573 B1 EP 0556573B1 EP 19930100741 EP19930100741 EP 19930100741 EP 93100741 A EP93100741 A EP 93100741A EP 0556573 B1 EP0556573 B1 EP 0556573B1
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EP
European Patent Office
Prior art keywords
dielectric
face
resonator
dielectric resonator
hole
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
EP19930100741
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German (de)
English (en)
Other versions
EP0556573A2 (fr
EP0556573A3 (en
Inventor
Haruo c/o Murata Manufac. Co. Ltd. Matsumoto
Yasuo C/O Murata Manufac. Co. Ltd. Yamada
Yukihiro c/o Murata Manufac. Co. Ltd. Kitaichi
Tadahiro C/O Murata Manufac. Co. Ltd. Yorita
Hideyuki c/o Murata Manufac. Co. Ltd. Kato
Tatsuya c/o Murata Manufac. Co. Ltd. Tsujiguchi
Hisashi c/o Murata Manufac. Co. Ltd. Mori
Hitoshi c/o Murata Manufac. Co. Ltd. Tada
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.)
Murata Manufacturing Co Ltd
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Murata Manufacturing Co Ltd
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Filing date
Publication date
Priority claimed from JP00920792A external-priority patent/JP3203728B2/ja
Priority claimed from JP31272092A external-priority patent/JP3293200B2/ja
Application filed by Murata Manufacturing Co Ltd filed Critical Murata Manufacturing Co Ltd
Priority to EP97104903A priority Critical patent/EP0788178B1/fr
Priority to EP98104197A priority patent/EP0854531B1/fr
Publication of EP0556573A2 publication Critical patent/EP0556573A2/fr
Publication of EP0556573A3 publication Critical patent/EP0556573A3/en
Application granted granted Critical
Publication of EP0556573B1 publication Critical patent/EP0556573B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • H01P1/2056—Comb filters or interdigital filters with metallised resonator holes in a dielectric block

Definitions

  • the present invention generally relates to a dielectric resonator, with an internal conductor being formed within a dielectric, and an external conductor being formed on the outside face of the dielectric, and its characteristic adjusting method.
  • a dielectric resonator where a resonator electrode is formed within a dielectric block, an earth electrode is formed on the outside face of the dielectric block, and a so-called tri-plate type of dielectric resonator with strip lines being opposite to each other by the use of a dielectric basic plate with a strip line being formed on one main face, and an earth electrode being formed on the other main face are used as a band passing filter and so on in, for example, the microwave band.
  • Fig. 31 shows as an explosive perspective view the construction of the conventional general dielectric resonator using the dielectric block.
  • reference numeral 40 is approximately six-face unit shaped dielectric block with three internal conductor shaped holes 46, 47, 48 and coupling holes 49, 50 being provided among the respectively internal conductor formed holes.
  • the internal conductor is formed on the inside face of the internal conductor formed holes 46, 47, 48, and an external conductor is formed on the other five faces except for an open face 52.
  • Reference numerals 53, 54 are so-called resin pins each being composed of resin portions 53a, 54a and signal input, output terminals 53b, 54b.
  • Reference numeral 55 is a case for retaining the dielectric block 40 and the resin pins 53, 54 and also, covering the open face portion of the dielectric block.
  • the resin pins 53, 54 are respectively inserted into the dielectric block 40 so as to cover the case 55, and also, the whole is integrated by the soldering of the dielectric block 40 with the external conductor 51.
  • the projection portions 55a, 55b of the case 55 are functioned as an earth terminal.
  • WO-A-8302853 relates to a ceramic band pass filter which includes a block which is comprised of a dielectric material which in turn is covered or plated with an electrically conductive material.
  • the block includes holes which extend from the top surface to the bottom surface thereof. These holes are plated with electrically conductive material. The conductive plating on the dielectric material extends partially into the through hole leaving a part of the hole unplated.
  • JP-A-57013801 relates to an interdigital band-pass filter in which a hollow gap is made in the center of an inductive body wherein a metallic film is adhered to a proper depth on the internal wall of the hole to form a resonator.
  • WO-A-8500929 relates to a microwave circuit device and its fabrication.
  • a band-pass filter is formed of a solid block of a high dielectric constant material provided with a number of holes wherein the block and the hole walls are plated with a material having an electrical conductivity much higher than that of the material of the block.
  • the plated exterior surface of the block comprises a resonance cavity for the device and the plated walls of the through holes form a plurality of interdigital resonator rods extending into the cavity from opposite walls.
  • Fig. 1. is an explosive perspective view of the dielectric resonator.
  • reference numerals 1a, 1b are respectively dielectric basic plates.
  • the semicircular two line grooves in section are formed respectively on one main face of the dielectric basic plates 1a, 1b and the internal conductor is formed on its inside face.
  • Reference numerals 2b, 3b are internal conductors provided on the side of the dielectric basic plate 1b.
  • Hollows 7a, 8a, 7b, 8b are respectively formed in one open of the grooves of the dielectric basic plates 1a, 1b.
  • An external conductor 4a is provided on the main face and four side faces opposite to the internal conductor formed face of the dielectric basic plate la
  • an external conductor 4b is provided on the main face and the four side faces opposite to the internal conductor formed face of the dielectric basic plate 1b.
  • Signal input, output electrodes 9, 10 are formed in one portion within the formed region of the external conductor 4a of the dielectric basic plate 1a.
  • Fig.2 is a dielectric resonator before the characteristic adjustment with two dielectric basic plates shown in Fig. 1 being connected oppositely in internal conductors.
  • Circular shaped internal conductor formed holes 5, 6 are constructed by the combination of semi-circular shaped grooves in this manner.
  • Such step shaped hollows 7, 8 as shown are constructed by the hollow combination formed on one open face.
  • the dielectric resonator shown in Fig. 2 is mounted in surface with the top face shown in the drawing being in contact against the basic plate for mounting use after the characteristic adjustment.
  • Fig. 4 and Fig. 5 are two embodiments where an open portion is formed in one portion of the internal conductor and the resonator characteristics are adjusted.
  • reference characters A are locations where the respective one-portions of 3a, 3b are deleted near the hollow formed portions. Concretely, grinding tools such as Ryta with a grindstone shaped as shown in reference numeral 11 being mounted are used.
  • the deleted portion is made an open portion with one portion of the internal conductor being deleted in this manner.
  • the deleted portion A of the internal conductor is formed in a location secluded from the open face F, the electromagnetic field leakage is restrained with respect to the interior from the open face F, or the resonator is hardly influenced by the electromagnetic field of the resonator periphery.
  • the deletion amount of the internal conductors 3a, 3b is controlled by the insertion depth of the grinding tool so that the tip end capacity is adjusted.
  • the resonator frequency and the coupling degree of its adjacent resonator changes if the tip end capacity changes, the given resonator characteristics are obtained by the insertion depth adjustment of the grinding tool with respect to the internal formed hole.
  • the tip end capacity to be formed in the open portion of the internal conductor is large so that the coupling degree between the resonators is made large so as to easily make the band broader.
  • Fig. 5 shows the other adjustment characteristic method.
  • reference characters B are locations where the dielectric have been deleted together with the internal conductor near the hollow formed portion.
  • a grinding tool 11 provided with a grindstone having a scoop diameter larger than the inside diameter of the internal conductor formed hole is used so as to grind the dielectric together with the internal conductor in this manner. Accordingly, the grinding tool is inserted in an axial direction from the hollow formed portion with the grinding tool being set to the central shaft of the internal conductor formed hole so that the dielectric together with the internal conductor can be easily ground by a fixed amount.
  • Fig. 6 shows a sectional view of a dielectric resonator in accordance with a second embodiment.
  • reference characters A, B show the deleted locations of the internal conductors.
  • One portion of the internal conductor is ground near the open face of the internal conductor formed hole and in a location secluded from the opening face so that the open portion of the internal conductor is formed in a location secluded from the open face. Accordingly, the problem caused by the electromagnetic field leakage is removed.
  • the grinding tool provided with a grindstone of comparatively small diameter is used for formation and adjustment of such open portion so that an inserting operation and a boring operation have only to be effected obliquely from the open portion.
  • one portion of the dielectric is together ground and the tip end capacity can be adjusted by the depth thereof.
  • Fig. 11 is one basic plate for constituting a dielectric resonator.
  • reference character 1b is a dielectric basic plate.
  • Semicircular (sectional) two-line grooves are formed on one main face of the dielectric basic plate 1b with internal conductors 2b, 3b being formed on the inside face thereof.
  • the single side of the throttle portion is formed in one portion of the groove.
  • An external conductor 4b is formed on the other main face opposite to the internal conductor of the dielectric basic plate 1b and four side faces.
  • a dielectric resonator is composed with the basic plate shaped the same as the basic plate being connected opposite to each other.
  • Fig. 12 is a sectional view thereof.
  • reference numerals 15a, 15b constitute a throttle portion in one portion of the internal conductor formed hole.
  • a dielectric resonator having such a throttle portion in one portion of an internal conductor formed hole a internal conductor formed on the inside face of the throttle portion is deleted with the use of grinding tool or the like from one open face of the internal conductor formed hole as shown in Fig. 13 so as to form an open portion in the internal conductor and effect a characteristic adjustment.
  • reference characters A show the deleted portions hereof.
  • the electromagnetic field leakage is restrained so as to form the open portion of the internal conductor in a location secluded from the open face in this manner.
  • the adjusting operation is simplified, and the adjusting accuracy is also improved as the grinding range by the grinding tool and so on is restricted to the throttle portion.
  • the present embodiment has a comb line-type of dielectric resonator as an example, even an interdigital type can be similarly applied.
  • Fig. 14 shows an embodiment 5.
  • Groove shaped concave portions 28 are formed in approximately parallel with the end face 22a side of the dielectric 22 on both the sides of the hole 23 with inside conductor 24 of the dielectric 22 being formed on the inside face.
  • An outside conductor 25 is formed across the outside face whole of the dielectric 22 including the concave portion 28. Accordingly, the interval between the outside conductor 25, which becomes an earth electrode of the bottom portion of the groove shaped concave portion 28, and the inside conductor 24 becomes shorter as shown in Fig. 14 (b), so that floating capacity Cs can be easily obtained.
  • the band width of the filter can be made larger by provision of, for example, the larger floating capacity Cs.
  • the resonator length becomes shorter and the size can be made smaller by provision of, for example, the larger floating capacity Cs.
  • the floating capacity Cs can be easily obtained, and also, the adjustment of the floating capacity Cs can be easily effected even in the filter of the construction of interdigital coupling.
  • Fig. 15 shows an embodiment 6, which is different from the prior embodiment, with the groove shaped concave portion 28 being provided on the single side of the dielectric 22. Even in the embodiment, the floating capacity Cs can be easily obtained and the adjustment can be easily effected as in the prior embodiment.
  • the shape can be standardized, a metal mold cost and a management cost can be reduced.
  • the concave portion 28 is formed on one side face of the dielectric 22, and can be formed on both the side faces of the dielectric 22. In this case, the floating capacity Cs can be provided larger.
  • Fig. 17 shows an embodiment 8.
  • Round hole shaped concave portions 28 are opened, in the same direction, near the hole 23.
  • the concave portions 28 are respectively formed in accordance with the holes 23.
  • the hole may become one or may be formed by the number of the holes 23 or more.
  • the concave portion 28 may be provided correspondingly on both the sides of the hole 23. Many concave portions 28 may be formed.
  • Fig. 19 shows an embodiment 10.
  • Taper portions 29 are formed on both the sides of the corner portion on the open face 23 of the dielectric 22.
  • the taper portion 29 is formed so that the interval between the inside conductor 24 within the hole 23 and the outside conductor 25 as an earth electrode of the taper portion 29, and the floating capacity Cs can be easily obtained as in the above described embodiment.
  • the size of the floating capacity Cs can be easily adjusted by the angle of the above described taper portion 29 and the size of the taper portion 9.
  • the taper portion 29 is formed on the angle portion of the other face so that the floating capacity Cs may be obtained.
  • Fig. 20 shows an embodiment 11 where the taper portion 29 is formed on the single side of the dielectric 22. Even in the embodiment, the floating capacity Cs can be easily obtained by the taper portion 29.
  • Fig. 22 is an embodiment 13, where a concave portion 31 of approximately L type in a stage shaped section, instead of such a taper shaped section as in the prior embodiment, is formed on the single side of the corner portion on the top face of the dielectric 22. Even in this case, the interval between the inside conductor 24 within the hole 23 and the outside conductor 25 which becomes an earth electrode of the concave stage portion 31 becomes shorter so that the floating capacity Cs can be easily obtained.
  • the concave stage portion 31 is continuously formed in Fig. 22, it may be formed not continuously, in one portion or intermittent portions, in the corner portions on both the side portions of the dielectric 22.
  • the size of the floating capacity can be easily adjusted by the size or the like of the concave stage portion 31.
  • the present embodiment 14 in Fig. 23 and Fig. 24 is an embodiment where the concave stage portion 31 is further made deeper as compared with the case of the above described embodiment 13.
  • the floating capacity Cs is obtained by the inside conductor 24 and the concave stage portion 31 is formed by a dielectric filter comb-line connected so that the outside conductor 25 is approached to the inside conductor 24 within the hole 23 so as to increase the floating capacity Cs.
  • the approached size W and the depth X of the concave stage portion 31 are adjusted so as to adjust the coupling.
  • the size of the dielectric 22 in the axial direction of the hole 23 is made L, 0 ⁇ X ⁇ L.
  • the coupling coefficients of the dielectric resonator can be changed by the change in the above described size X, W so that the passing band of the filter can be controlled without the shape (metal mold).
  • the shape of the dielectric resonator can be standardized, and the metallic cost and the management cost can be reduced.
  • the dielectric resonator in each of the above described embodiments is not restricted to the number of the stages although the three-stage construction has been described. Namely, it can be applied to the dielectric resonator of one stage or three-stage or more.
  • the dielectric resonator of the present invention can be applied to a case where all the filters such as band pass filter, band elimination filter, high-pass filter, lowpass filter and so on are formed.
  • the dielectric resonator of the present invention can be mounted on the surface on the circuit basic plate without the use of a special individual signal input, output terminals as the signal input, output electrodes are provided on one portion of the external conductor.
  • the conductor exists on the open face of the internal conductor formed hole so as to provide no open face, the electromagnetic field leakage is less so that influences by the electromagnetic field leakage are less if the dielectric resonator is mounted on the circuit basic plate in a condition as it is.
  • a dielectric resonator without coupling coefficients being adjusted between the resonator frequency of the resonator and the resonance without coating addition and so on with respect to the non-formed portion of the internal conductor.
  • the open portion of the internal conductor is formed in a location secluded from the open face of the internal conductor formed holes, the influences by the electromagnetic field leakage is less. Therefore, no couplings among the resonator, the other object near the resonator and the circuit are provided so that stable resonator characteristics are provided.
  • the characteristic adjusting method of the dielectric resonator of the present invention there are steps of providing an open portion in one portion of the internal conductor only by the movement of a grinding tool in the axial direction of the internal conductor formed hole with the deletion locations of the internal conductor and the dielectric being restricted, and also, easily adjusting the tip end capacity by the moving amount. Further, a dielectric resonator having given resonance frequency and coupling amount can be easily obtained without the higher size accuracy to be demanded in the grinding working operation, because the tip end capacity is gradually lowered in spite of much grinding amount of the whole.
  • the concave portion is formed on the surface of the above described dielectric, the outside conductor of the bottom portion of the concave portion is approached to the above described inside conductor so that the interval between the inside conductor of the hole interior of the dielectric and the outside conductor which becomes an earth electrode becomes shorter so as to easily obtain the floating capacity by the approaching operation between the outside conductor of the bottom portion of the concave portion formed on the surface of the dielectric and the above described inside conductor.
  • the floating capacity can be adjusted by the comparatively simple working or molding operation of the size, depth and so on of the concave portion.
  • the band width of the filter can be made larger by provision of, for example, larger floating capacity.
  • Resonator length becomes shorter by the provision of, for example, the larger floating capacity with an effect that the size may be made smaller.
  • the taper portion is formed in the corner portion of the dielectric, and the outside conductor of the taper portion is approached to the inside conductor, the interval between the inside conductor of the hole interior of the dielectric and the outside conductor which becomes an earth electrode becomes shorter as in the case of the claim 1 so that the floating capacity is easier to obtain.
  • the floating capacity can be adjusted by comparatively simple working or molding operation of the size, inclination and so on of the taper portion of the corner portion.
  • the band width of the filter can be made larger by the provision of, for example, the larger floating capacity.
  • the resonator length becomes shorter by provision of, for example, the larger floating capacity so that the size may be made smaller.
  • approximately L type of concave stage portion in section is provided in the corner portion of the dielectric, and the outside conductor of the concave stage portion is approached to the inside conductor so that the interval between the inside conductor of the hole interior of the dielectric and the outside conductor which becomes an earth electrode becomes shorter so as to easily obtain the floating capacity.
  • the floating capacity can be adjusted by comparatively simple working or molding operation of the size, depth and so on of the concave portion of the corner portion.
  • the band width of the filter can be widened by provision of, for example, the larger floating capacity.
  • the resonator length becomes shorter by provision of, for example, the larger floating capacity so that the size may be made smaller.
  • the non-conductive portions may be spaced unequally from the ends of the holes and they may have unequal axial lengths.
  • Fig. 25 is a front face view seen from the short-circuit face side, with reference characters C, D being deletion portions of the conductor and the dielectric of the short-circuit faces.
  • the resonance frequency of the resonator by the internal conductor formed hole 5 is lowered by the partial deletion of the conductor and the dielectric in the region of the S1 in Fig. 25.
  • the resonance frequency of the resonator is lowered by the internal conductor formed hole 6.
  • the coupling degree between both the resonators is lowered if the conductor and the dielectric are partially deleted in the region of the S12.
  • Modified embodiment of the coupling coefficients by the deletion of the conductor and the dielectric are shown in Fig. 26 and Fig. 28.
  • a conductor deletion portion of a width d is provided in the middle position of two coupling holes as shown in Fig. 26. Changes in the coupling coefficients are measured when the area S has been changed.
  • a 2.0 mm
  • b 4.0 mm
  • c 5.0 mm.
  • the coupling coefficient can be adjusted by the conductor deletion area among the internal conductor formed holes on the short-circuit face.
  • Fig. 27 and Fig. 28 show the adjustment example of the resonance frequency.
  • a conductor deletion portion of a length g with a width f is provided in a location away at a given interval from the internal conductor formed hole as in Fig. 27 so as to measure the resonance frequency when the length g has been changed.
  • a embodiment shown in Fig. 25 through Fig. 29 is that one portion of the conductor and the dielectric is deleted on the short-circuit face, and the capacity Cs is decreased, if the conductor and the dielectric on the open face on the internal conductor non-formed portion side are deleted, so that the resonance frequency can be adjusted in a higher direction.
  • the coupling degree between the resonators are adjusted by the partial deletion of the conductor and the dielectric in the area S12, S23, ... S n-1 n among the open portions of the internal conductor formed holes on the short-circuit face as described in Fig. 30 in this case.
  • the resonance frequency of the respective resonators can be adjusted by the partial deletion of the conductor and the dielectric in the regions of S1, S2, S3 ... Sn.

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

Claims (23)

  1. Résonateur diélectrique, comprenant
    un corps diélectrique (1; 21) présentant au moins un trou traversant (5, 6; 23),
    un conducteur interne (2, 3) formé sur la face intérieure dudit au moins un trou traversant (5, 6), et
    un conducteur externe (4) formé sur la face extérieure du corps diélectrique (1),
    caractérisé par le fait que ledit au moins un trou traversant (5, 6) présente au moins deux segments de diamètre différent et une partie de réglage (A; B; 15), exempte de conducteur interne, s'étendant dudit segment de grand diamètre audit segment de petit diamètre, séparant ainsi lesdits au moins deux segments par une partie non-conductrice.
  2. Résonateur diélectrique, comprenant
    un corps diélectrique (1; 21) présentant au moins un trou traversant (5, 6),
    un conducteur interne (2, 3) formé sur la face intérieure dudit au moins un trou traversant (5, 6), et
    un conducteur externe (4) formé sur la face extérieure du corps diélectrique (1),
    caractérisé par le fait que ledit au moins un trou traversant (5, 6) présente au moins deux segments de même diamètre et une partie de réglage (A; B; 15), exempte de conducteur interne, présentant un diamètre différent du diamètre desdits au moins deux segments, séparant ainsi lesdits au moins deux segments par une partie non-conductrice.
  3. Résonateur diélectrique suivant la revendication 1 ou 2, comprenant une pluralité de trous.
  4. Résonateur diélectrique suivant la revendication 1 ou 3, dans lequel
    un premier segment de la surface intérieure dans un sens axial dudit trou (5, 6) présente un premier diamètre et un second segment de la surface intérieure dans le sens axial dudit trou présente un second diamètre, le second diamètre étant plus petit que le premier diamètre, et
    ladite partie non-conductrice présentant un troisième diamètre qui est plus grand que le, ou égal au, second diamètre ou plus petit que le, ou égal au, premier diamètre.
  5. Résonateur diélectrique suivant la revendication 1 ou 2, dans lequel le corps diélectrique (1) est un bloc rectangulaire, une surface extérieure du corps diélectrique étant définie par le fait qu'au moins une face est une face de montage d'une plaque de base de circuit destinée au montage et au raccordement électrique du résonateur diélectrique à une plaque de base de circuit, des électrodes d'entrée et de sortie de signaux (9, 10) étant prévues sur ladite au moins une face de ladite surface extérieure du corps diélectrique.
  6. Résonateur diélectrique suivant la revendication 1 ou 2, dans lequel une surface extérieure du corps diélectrique (1) définit une face et des faces latérales respectives, des électrodes d'entrée et de sortie de signaux (9, 10) se trouvant sur la face de ladite surface extérieure et s'étendant de la face auxdites faces latérales respectives du corps diélectrique (1).
  7. Résonateur diélectrique suivant la revendication 3, dans lequel au moins deux dits trous (5, 6) présentent une paire respective de segments conducteurs internes séparés par une partie non-conductrice correspondante (A; B; 15).
  8. Résonateur diélectrique suivant la revendication 7, dans lequel lesdites parties non-conductrices (A; B; 15) sont distantes de manière non-uniforme des extrémités des trous.
  9. Résonateur diélectrique suivant la revendication 8, dans lequel lesdites parties non-conductrices (A; B; 15) présentent des longueurs axiales inégales.
  10. Résonateur diélectrique suivant la revendication 7, dans lequel lesdites parties non-conductrices (A; B; 15) présentent des longueurs axiales inégales.
  11. Résonateur diélectrique suivant la revendication 1 ou 2, comprenant, par ailleurs, une face de court-circuit, une partie du conducteur externe étant éliminée dans une partie de la face de court-circuit, pour régler au moins l'un parmi la fréquence de résonance et le degré de couplage du résonateur.
  12. Résonateur diélectrique suivant la revendication 1 ou 2, comprenant, par ailleurs, une face de court-circuit, une partie du corps diélecrique étant éliminée dans une partie de la face de court-circuit, pour régler au moins l'un parmi la fréquence de résonance et le degré de couplage du résonateur.
  13. Résonateur diélectrique suivant la revendication 1 ou 2, dans lequel le corps diélectrique (21) comporte une face d'extrémité, une paire d'évidements (28) dans le corps diélectrique, dans la face d'extrémité, définissant ainsi une paire de parties latérales de la face d'extrémité, les évidements étant généralement parallèles aux parties latérales et étant situés sur des côtés respectifs de la pluralité de trous (23).
  14. Résonateur diélectrique suivant la revendication 1 ou 2, dans lequel le corps diélectrique (21) comporte une face latérale, un évidement (28) dans le corps diélectrique, dans la face latérale.
  15. Résonateur diélectrique suivant la revendication 1 ou 2, dans lequel le corps diélectrique (21) comporte une face latérale, un évidement (28) dans le corps diélectrique, dans la face latérale, le conducteur externe s'étendant dans l'évidement dans le corps diélectrique et sur une surface de fond de l'évidement.
  16. Résonateur diélectrique suivant la revendication 1 ou 2, comprenant, par ailleurs, une pluralité d'évidements (28) généralement circulaires, à des endroits proches de la pluralité de trous (23), les évidements généralement circulaires s'étendant dans le corps diélectrique dans la même direction que la pluralité de trous.
  17. Résonateur diélectrique suivant la revendication 1 ou 2, dans lequel le corps diélectrique (21) comporte une face latérale, un évidement (28) généralement circulaire dans le corps diélectrique, dans la face latérale, le conducteur externe s'étendant dans l'évidement généralement circulaire dans le corps diélectrique et sur une surface de fond de l'évidement, une partie du conducteur externe sur la surface de fond de l'évidement généralement circulaire étant généralement parallèle au conducteur interne dans l'un correspondant de la pluralité de trous.
  18. Résonateur diélectrique suivant la revendication 1 ou 2, dans lequel le bloc diélectrique (21) comporte une partie façonnée (29), ladite partie façonnée (29) du bloc diélectrique (21) comprenant des parties coniques prévues à au moins un coin du bloc diélectrique, de sorte que des parties du conducteur externe sur les parties coniques se trouvent plus près des conducteurs internes dans la pluralité de trous.
  19. Résonateur diélectrique suivant la revendication 1 ou 2, dans lequel le bloc diélectrique (21) comporte une partie façonnée (31), ladite partie façonnée du bloc diélectrique comprenant des parties étagées généralement en forme de "L" prévues à au moins un coin du bloc diélectrique, de sorte que des parties du conducteur externe sur les parties étagées se trouvent plus près des conducteurs internes dans la pluralité de trous.
  20. Procédé de réglage de la capacité d'extrémité de pointe d'un résonateur diélectrique comprenant
    un corps diélectrique (1) présentant au moins un trou traversant (5, 6),
    un conducteur interne (2, 3) formé sur la face intérieure dudit au moins un trou traversant (5, 6), ledit trou traversant présentant au moins deux segments de diamètre différent, et
    un conducteur externe (4) formé sur la face extérieure du corps diélectrique (1),
    caractérisé par l'étape consistant à roder un creux de réglage (A; B; 15) exempt de conducteur interne s'étendant dudit segment de grand diamètre audit segment de petit diamètre, séparant ainsi lesdits au moins deux segments par une partie non-conductrice.
  21. Procédé de réglage de la capacité d'extrémité de pointe d'un résonateur diélectrique comprenant
    un corps diélectrique (1) présentant au moins un trou traversant (5, 6),
    un conducteur interne (2, 3) formé sur la face intérieure dudit au moins un trou traversant (5, 6), ledit trou traversant présentant au moins deux segments de même diamètre, et
    un conducteur externe (4) formé sur la face extérieure du corps diélectrique (1),
    caractérisé par l'étape consistant à roder un creux de réglage (A; B; 15) exempt de conducteur interne ayant un diamètre différent du diamètre desdits au moins deux segments, séparant ainsi lesdits au moins deux segments par une partie non-conductrice.
  22. Procédé suivant la revendication 20 ou 21, dans lequel l'étape de rodage comprend l'élimination du conducteur interne dudit creux de réglage.
  23. Procédé suivant la revendication 20 ou 21, dans lequel l'étape de rodage comprend l'élimination d'une quantité prédéterminée de matériau diélectrique et le conducteur interne dudit creux de réglage.
EP19930100741 1992-01-22 1993-01-19 Résonateur diélectrique et procédé de réglage de sa caractéristique Expired - Lifetime EP0556573B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP97104903A EP0788178B1 (fr) 1992-01-22 1993-01-19 Résonateur diélectrique
EP98104197A EP0854531B1 (fr) 1992-01-22 1993-01-19 Résonateur diélectrique et méthode d'ajustement d'un résonateur diélectrique

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP9207/92 1992-01-22
JP00920792A JP3203728B2 (ja) 1991-11-08 1992-01-22 誘電体共振器およびその特性調整方法
JP2905692 1992-04-03
JP29056/92U 1992-04-03
JP312720/92 1992-10-28
JP31272092A JP3293200B2 (ja) 1992-04-03 1992-10-28 誘電体共振器

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP97104903A Division EP0788178B1 (fr) 1992-01-22 1993-01-19 Résonateur diélectrique
EP98104197A Division EP0854531B1 (fr) 1992-01-22 1993-01-19 Résonateur diélectrique et méthode d'ajustement d'un résonateur diélectrique

Publications (3)

Publication Number Publication Date
EP0556573A2 EP0556573A2 (fr) 1993-08-25
EP0556573A3 EP0556573A3 (en) 1993-10-20
EP0556573B1 true EP0556573B1 (fr) 1998-09-23

Family

ID=27278386

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19930100741 Expired - Lifetime EP0556573B1 (fr) 1992-01-22 1993-01-19 Résonateur diélectrique et procédé de réglage de sa caractéristique

Country Status (3)

Country Link
EP (1) EP0556573B1 (fr)
DE (3) DE69328980T2 (fr)
FI (1) FI115337B (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3198661B2 (ja) * 1992-10-14 2001-08-13 株式会社村田製作所 誘電体共振器装置およびその実装構造
JP3023949B2 (ja) * 1995-12-12 2000-03-21 株式会社村田製作所 誘電体フィルタ
JP3125671B2 (ja) * 1996-02-16 2001-01-22 株式会社村田製作所 誘電体フィルタ
US5844454A (en) * 1996-03-29 1998-12-01 Ngk Spark Plug Co., Ltd. Dielectric filter with non-conductive edge
JPH10126107A (ja) * 1996-08-30 1998-05-15 Ngk Spark Plug Co Ltd 誘電体フィルタ
TW409458B (en) * 1998-11-03 2000-10-21 Samsung Electro Mech Dielectric filter
CN110676542B (zh) * 2019-09-05 2021-06-25 京信通信技术(广州)有限公司 端口耦合结构、滤波器及射频组件

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5713801A (en) * 1980-06-28 1982-01-23 Nippon Dengiyou Kosaku Kk Interdigital band-pass filter
US4431977A (en) * 1982-02-16 1984-02-14 Motorola, Inc. Ceramic bandpass filter
JPS59128801A (ja) * 1983-01-14 1984-07-25 Oki Electric Ind Co Ltd 誘電体フイルタの調整方法
US4523162A (en) * 1983-08-15 1985-06-11 At&T Bell Laboratories Microwave circuit device and method for fabrication
JPS6152003A (ja) * 1984-08-21 1986-03-14 Murata Mfg Co Ltd 誘電体フイルタ
JPS6285502A (ja) * 1985-10-11 1987-04-20 Fujitsu Ltd 誘電体フイルタ
JPH01212001A (ja) * 1988-02-18 1989-08-25 Matsushita Electric Ind Co Ltd 誘電体フィルタ
US5122768A (en) * 1990-01-08 1992-06-16 Nkg Spark Plug Co., Ltd. Compact stripline filter with fixed capacity between coupled resonator fingers

Also Published As

Publication number Publication date
FI115337B (fi) 2005-04-15
DE69327118T2 (de) 2000-06-15
EP0556573A2 (fr) 1993-08-25
DE69328980D1 (de) 2000-08-10
DE69327118D1 (de) 1999-12-30
FI930252A0 (fi) 1993-01-22
DE69321152D1 (de) 1998-10-29
EP0556573A3 (en) 1993-10-20
DE69321152T2 (de) 1999-05-06
FI930252A (fi) 1993-07-23
DE69328980T2 (de) 2001-02-15

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