WO2020087934A1 - Bloc de résonance diélectrique, filtre de guide d'ondes diélectrique, et structure de couplage associée - Google Patents

Bloc de résonance diélectrique, filtre de guide d'ondes diélectrique, et structure de couplage associée Download PDF

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Publication number
WO2020087934A1
WO2020087934A1 PCT/CN2019/090794 CN2019090794W WO2020087934A1 WO 2020087934 A1 WO2020087934 A1 WO 2020087934A1 CN 2019090794 W CN2019090794 W CN 2019090794W WO 2020087934 A1 WO2020087934 A1 WO 2020087934A1
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WO
WIPO (PCT)
Prior art keywords
dielectric
coupling
energy
metallization layer
annular
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PCT/CN2019/090794
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English (en)
Chinese (zh)
Inventor
张彪
丁海
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京信通信技术(广州)有限公司
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Publication of WO2020087934A1 publication Critical patent/WO2020087934A1/fr

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P7/00—Resonators of the waveguide type
    • H01P7/10—Dielectric resonators
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P3/00—Waveguides; Transmission lines of the waveguide type
    • H01P3/16—Dielectric waveguides, i.e. without a longitudinal conductor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P5/00—Coupling devices of the waveguide type
    • H01P5/12—Coupling devices having more than two ports

Definitions

  • the invention relates to the technical field of communication equipment, in particular to a dielectric resonator block, a dielectric waveguide filter and its coupling structure.
  • a dielectric resonator block, a dielectric waveguide filter and its coupling structure which can increase the strength of the energy coupling between the dielectric resonator blocks, avoid higher harmonics from being close to the passband, and have good performance of the remote outer band ;
  • the energy coupling strength of the coupling structure using the dielectric resonator block is high, the higher harmonics are far away from the passband, and the far-end outer band performance is good; thus, the energy coupling of the dielectric waveguide filter using the coupling structure High strength and good performance at the far end.
  • a dielectric resonant block is provided.
  • the dielectric resonant block is provided with a first metallization layer.
  • the first metallization layer is provided with an annular through slot and a second provided in the annular through slot The metallization layer and the annular through-groove are used to form a coupling window.
  • the surfaces of the two dielectric resonator blocks provided with the first metallization layer are adhered to each other, so that the two coupling windows are oppositely arranged and connected, and the two opposite second metals
  • the chemical layers are attached to each other and cooperate to form a first energy transmission channel, and the two annular through slots communicate with each other and cooperate to form a second energy transmission channel, so that not only can the two dielectric resonators pass through the air medium of the second energy transmission channel Energy coupling, and the energy coupling can also be performed through the first energy transmission channel, thereby improving the energy coupling strength between the two dielectric resonance blocks; meanwhile, the two dielectric resonance blocks are mainly conducted through the first energy transmission channel
  • the energy coupling that is, the energy coupling between the second metallization layers that are attached to each other, depends on the high coupling strength of the metal medium to the energy, which can reduce the size of the coupling window, thereby avoiding the higher harmonics away from the pass band.
  • the width of the annular through groove is 0.1 mm to 5 mm. In this way, during debugging, the width of the annular through-slot can be adjusted to adjust the energy coupling strength, which is simple and fast, which reduces the difficulty of debugging and improves the efficiency of debugging.
  • the shape of the annular through slot is set as a circular ring or a polygon. In this way, the width of the ring-shaped through-slot is uniformly set, which is convenient for adjusting the width of the ring-shaped through-slot, and thus the energy coupling strength can be adjusted simply and conveniently.
  • the polygon is set as a rectangle.
  • the outline of the annular through-groove is box-shaped, and the width of the annular through-groove can be uniformly adjusted, which is also convenient for processing and reduces the processing difficulty.
  • the thickness of the first metallization layer is 0.01 mm to 2 mm
  • the thickness of the second metallization layer is 0.01 mm to 2 mm. In this way, adjusting the thickness of the first metallization layer and the second metallization layer to adjust the energy coupling strength is simple and convenient.
  • the coupling window is disposed near the central axis of the dielectric resonator block. In this way, the distance of higher harmonics from the passband can be increased, further improving the far-end outband performance.
  • the dielectric resonant block is further provided with a metalized through-hole that is offset from the coupling window. In this way, the narrow side of the waveguide is configured to transmit the coupling of energy.
  • a coupling structure of a dielectric waveguide filter which includes two above-mentioned dielectric resonance blocks disposed in close contact with each other, and two of the ring-shaped through-slots communicate with each other to form a first energy coupling channel.
  • the second metallization layer is bonded together to form a second energy coupling channel.
  • the sides of the two dielectric resonator blocks provided with the first metallization layer are attached to each other, so that the two coupling windows are arranged oppositely.
  • the two ring-shaped through grooves communicate with each other and cooperate
  • a first energy coupling channel is formed, and two opposing second metallization layers are attached to each other and cooperate to form a second energy coupling channel, so that not only can the two dielectric resonators pass through the air medium of the first energy coupling channel for energy Coupling, and the energy coupling can also be performed through the metal medium of the second energy coupling channel, which improves the strength of the energy coupling between the two dielectric resonance blocks, thereby increasing the strength of the energy coupling of the coupling structure; at the same time, the two dielectric resonances
  • the energy coupling between the blocks is mainly through the second energy coupling channel, that is, the energy coupling between the two second metallization layers that are attached to each other, relying on the high coupling
  • a dielectric waveguide filter including: the above coupling structure.
  • the two dielectric resonator blocks of the coupling structure are provided with the first metallization layer attached to each other, so that the two coupling windows are arranged oppositely.
  • the two annular through slots communicate with each other and Cooperate to form a first energy coupling channel
  • two opposing second metallization layers stick to each other and cooperate to form a second energy coupling channel, so that not only can the two dielectric resonators pass through the air medium of the first energy coupling channel for energy
  • the energy coupling through the metal medium of the second energy coupling channel improves the strength of the energy coupling between the two dielectric resonators, thereby increasing the strength of the energy coupling of the dielectric waveguide filter;
  • the two The energy coupling between the two dielectric resonators is mainly through the second energy coupling channel, that is, the energy coupling between the two second metallization layers that are attached to each other depends on the high strength of the energy coupling of the metal medium,
  • FIG. 1 is a schematic structural diagram of a dielectric resonator block according to an embodiment
  • FIG. 2 is a schematic structural diagram of a coupling structure of a dielectric waveguide filter according to an embodiment
  • FIG 3 is a schematic structural view of a coupling structure of a dielectric waveguide filter according to another embodiment.
  • Dielectric resonator, 110 first metallization layer, 120, ring-shaped through slot, 130, coupling window, 140, second metallization layer, 150, metallization via.
  • a dielectric resonant block 100 is disclosed.
  • the dielectric resonant block 100 is provided with a first metallization layer 110, and the first metallization layer 110 is provided with an annular through groove 120 and a second metallization layer 140 disposed in the ring-shaped through slot 120.
  • the ring-shaped through slot 120 is used to form the coupling window 130.
  • the surfaces of the two dielectric resonator blocks 100 provided with the first metallization layer 110 are attached to each other, so that the two coupling windows 130 are arranged oppositely.
  • the two annular through slots 120 are connected to each other and cooperate to form a first energy coupling channel
  • two opposing second metallization layers 140 are attached to each other and cooperate to form a second energy coupling channel, so that the two dielectric resonator blocks 100 can not only couple through the first energy
  • the air medium of the channel is used for energy coupling, and the metal medium of the second energy coupling channel can also be used for energy coupling, which improves the strength of the energy coupling between the two dielectric resonator blocks 100; meanwhile, the two dielectric resonator blocks 100
  • the energy is mainly coupled through the second energy coupling channel, that is, the energy coupling between the two second metallization layers 140 that are attached to each other, and the coupling strength of the energy by the metal medium is high, so that
  • the shape of the dielectric resonator block 100 may be various, for example, it may be rectangular, square, or circular, as long as it meets the usage requirements.
  • the external dimensions of the coupling window 130 and the area of the second metallization layer 140 can be adjusted during the debugging stage, and only need to meet the actual use requirements, thereby reducing the debugging difficulty and improving the debugging efficiency.
  • the width of the annular through groove 120 is 0.1 mm to 5 mm.
  • the width of the annular through-slot 120 may be 0.1 mm or 5 mm.
  • the shape of the above-mentioned annular through groove 120 may be circular or polygonal, as long as it can separate the first metallization layer 110 and the second metallization layer 140 and perform energy between the dielectric resonator blocks 100 Coupling is sufficient. In this way, the design flexibility of the coupling window 130 is improved, the processing difficulty is reduced, the production cost is saved, and mass production is facilitated.
  • the shape of the annular through slot 120 is set as a circular ring or a polygon.
  • the width of the ring-shaped through-slot 120 can be uniformly distributed, which is convenient for adjusting the width of the ring-shaped through-slot 120, thereby facilitating adjustment of the energy coupling strength between the dielectric resonator blocks 100 during the adjustment stage.
  • the contour of the coupling window 130 is set to a first circle
  • the outer contour of the second metallization layer 140 is correspondingly set to a second circle
  • the second circle is included within the first circle
  • the second circle and the first circle are preferably arranged concentrically.
  • the annular through-slot 120 formed by the gap between the side wall of the second metallization layer 140 and the inner wall of the coupling window 130 is a uniform circular ring, so that the width of the annular through-slot 120 can be adjusted more accurately.
  • the energy coupling strength between the dielectric resonance blocks 100 can be accurately adjusted.
  • the coupling window 130 is set to a first polygon
  • the outer contour of the second metallization layer 140 is set to a second polygon matching the first polygon
  • the second polygon is included in the first polygon
  • the second polygon and the first polygon are preferably arranged at the same center of gravity.
  • the shape of the annular through groove 120 formed by the gap between the side wall of the second metallization layer 140 and the inner wall of the coupling window 130 corresponds to the shape of the polygon
  • the width of the annular through groove 120 is preferably uniform, so as to be more accurate Adjust the width of the ring-shaped through slot 120, and then can accurately adjust the energy coupling strength between the dielectric resonance blocks 100 during the debugging stage.
  • the polygon is set as a rectangle.
  • the outline of the annular through-slot 120 is a box shape, so that the width of the annular through-slot 120 can be uniformly set; at the same time, the rectangular shape is also convenient for processing and can be mass-produced.
  • the thickness of the first metallization layer 110 and the thickness of the second metallization layer 140 are the same or approximately the same. In this way, when the two dielectric resonator blocks 100 are assembled and assembled, the two opposing first metallization layers 110 can be closely adhered to each other, and the opposing two second metallization layers 140 can be closely adhered to each other Fit, without interference, to ensure the reliability of energy coupling.
  • the thickness of the first metallization layer 110 is approximately the same as the thickness of the second metallization layer 140. Considering processing and assembly errors, the thickness of the second metallization layer 140 and the thickness of the first metallization layer 110 are allowed to have A certain error should be considered to be the same thickness as long as the error is allowed.
  • the thickness of the first metallization layer 110 is 0.01 mm to 2 mm
  • the thickness of the second metallization layer 140 is also 0.01 mm to 2 mm. In this way, by adjusting the thickness of the first metallization layer 110 or the thickness of the second metallization layer 140, the size of the energy coupling strength between the two dielectric resonator blocks 100 can be flexibly adjusted to meet the usage requirements.
  • the thickness of the first metallization layer 110 may be 0.01 mm or 2 mm; the thickness of the second metallization layer 140 may be 0.01 mm or 2 mm.
  • the coupling window 130 is disposed near the central axis of the dielectric resonator block 100.
  • the higher harmonics can be further away from the passband, further enhancing the far-end outband performance.
  • the coupling window 130 is disposed close to the center position of the dielectric resonance block 100, so that the distance of the higher-order harmonics is the farthest from the pass band, and the far-end outer band has the best performance.
  • the dielectric resonance block 100 is further provided with a metalized through hole 150 that is offset from the coupling window 130.
  • a metalized through hole 150 that is offset from the coupling window 130.
  • a coupling structure of a dielectric waveguide filter is also disclosed, which includes two dielectric resonator blocks 100 of any of the above embodiments that are relatively attached to each other, and two The ring-shaped through slots 120 are connected to form a first energy coupling channel, and the two second metallization layers 140 are bonded together to form a second energy coupling channel.
  • the coupling structure of the dielectric waveguide filter of the above embodiment when used, one side of the two dielectric resonator blocks 100 provided with the first metallization layer 110 is attached to each other, so that the two coupling windows 130 are oppositely arranged.
  • the through slots 120 communicate with each other and cooperate to form a first energy coupling channel, and the two opposing second metallization layers 140 are bonded to each other and cooperate to form a second energy coupling channel, so that not only can the two dielectric resonator blocks 100 pass through the first
  • the air medium of the energy coupling channel couples the energy, and the energy coupling through the metal medium of the second energy coupling channel improves the strength of the energy coupling between the two dielectric resonators 100, thereby increasing the energy of the coupling structure
  • the strength of the coupling; at the same time, the energy coupling between the two dielectric resonators 100 is mainly through the second energy coupling channel, that is, the energy coupling between the two second metallization layers 140 that are attached to each other depends on
  • a dielectric waveguide filter is also disclosed, including the coupling structure of the above embodiment.
  • the two dielectric resonator blocks 100 of the coupling structure provided with the first metallization layer 110 are attached to each other, so that the two coupling windows 130 are oppositely arranged.
  • the ring-shaped through-slots 120 communicate with each other and cooperate to form a first energy coupling channel, and the two opposing second metallization layers 140 are attached to each other and cooperate to form a second energy coupling channel, so that not only can the two dielectric resonator blocks 100 pass through
  • the air medium of an energy coupling channel performs energy coupling, and energy coupling can also be performed through the metal medium of the second energy coupling channel, which improves the strength of energy coupling between the two dielectric resonator blocks 100, thereby improving the dielectric waveguide filtering.
  • the metal medium has high energy coupling strength, which can reduce the size of the coupling window 130, thereby avoiding the higher harmonics away from the pass band Problem, the distal end of the outer band of the dielectric waveguide filter performance is good.
  • dielectric waveguide filters are particularly suitable for ceramic dielectric waveguide filters, and their characteristics of miniaturization, light weight, and high performance meet the development needs of devices for communications.

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Abstract

La présente invention concerne un bloc de résonance diélectrique, un filtre de guide d'ondes diélectrique, et une structure de couplage associée ; une première couche métallisée est disposée sur un bloc de résonance diélectrique, une fente traversante annulaire et une seconde couche métallisée disposée à l'intérieur de la fente traversante annulaire sont disposées sur la première couche métallisée, et la fente traversante annulaire est utilisée pour former une fenêtre de couplage. La présente invention peut améliorer la résistance du couplage d'énergie entre des blocs de résonance diélectrique, empêcher des harmoniques supérieures d'être relativement proches d'une bande passante, et obtenir une bonne performance hors bande distale. Par conséquent, la résistance du couplage d'énergie d'une structure de couplage à l'aide des blocs de résonance diélectrique est élevée, des harmoniques supérieures sont relativement éloignées d'une bande passante, et la performance hors bande distale est bonne. Par conséquent, la résistance du couplage d'énergie d'un filtre de guide d'ondes diélectrique à l'aide de la structure de couplage est élevée et la performance hors bande distale est bonne.
PCT/CN2019/090794 2018-11-01 2019-06-11 Bloc de résonance diélectrique, filtre de guide d'ondes diélectrique, et structure de couplage associée WO2020087934A1 (fr)

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CN201811295429.2 2018-11-01
CN201811295429.2A CN109449557B (zh) 2018-11-01 2018-11-01 介质谐振块、介质波导滤波器及其耦合结构

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CN109449557B (zh) * 2018-11-01 2024-04-30 京信通信技术(广州)有限公司 介质谐振块、介质波导滤波器及其耦合结构
CN109841935A (zh) * 2019-03-15 2019-06-04 苏州市协诚五金制品有限公司 一种叠层陶瓷波导滤波器
CN110148819B (zh) * 2019-06-20 2024-03-26 京信通信技术(广州)有限公司 介质波导滤波器的容性耦合结构及介质波导滤波器
US11437691B2 (en) * 2019-06-26 2022-09-06 Cts Corporation Dielectric waveguide filter with trap resonator
CN111478002B (zh) * 2020-05-29 2021-06-22 京信射频技术(广州)有限公司 介质波导滤波器与通信装置

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