WO2021256611A1 - Filtre de guide d'ondes - Google Patents

Filtre de guide d'ondes Download PDF

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Publication number
WO2021256611A1
WO2021256611A1 PCT/KR2020/010748 KR2020010748W WO2021256611A1 WO 2021256611 A1 WO2021256611 A1 WO 2021256611A1 KR 2020010748 W KR2020010748 W KR 2020010748W WO 2021256611 A1 WO2021256611 A1 WO 2021256611A1
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WO
WIPO (PCT)
Prior art keywords
resonance
groove
input
group
recessed
Prior art date
Application number
PCT/KR2020/010748
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English (en)
Korean (ko)
Inventor
류지만
김덕한
장대훈
Original Assignee
주식회사 파트론
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 주식회사 파트론 filed Critical 주식회사 파트론
Publication of WO2021256611A1 publication Critical patent/WO2021256611A1/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
    • H01P1/207—Hollow waveguide filters
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P1/00—Auxiliary devices
    • H01P1/16—Auxiliary devices for mode selection, e.g. mode suppression or mode promotion; for mode conversion
    • H01P1/162—Auxiliary devices for mode selection, e.g. mode suppression or mode promotion; for mode conversion absorbing spurious or unwanted modes of propagation
    • 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
    • H01P1/213—Frequency-selective devices, e.g. filters combining or separating two or more different frequencies
    • 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
    • H01P1/213—Frequency-selective devices, e.g. filters combining or separating two or more different frequencies
    • H01P1/2135—Frequency-selective devices, e.g. filters combining or separating two or more different frequencies using strip line filters

Definitions

  • the present invention relates to a waveguide filter, and more particularly, to a waveguide filter having a continuous hole.
  • the waveguide filter has an advantage that it can be used in a high frequency band compared to a widely used dielectric filter having a resonance hole.
  • communication technology of a high frequency band corresponding to several tens of GHz is recently introduced, and thus the need for a waveguide filter is further increased.
  • another type of conventional waveguide filter implements a dielectric waveguide filter by connecting a plurality of monoblocks made of dielectric materials. Specifically, a metal pattern was formed on the surface where each monoblock abuts, and the shape of the metal pattern was adjusted to control the RF characteristics of the filter.
  • this has problems in that the manufacturing process is complicated and there is a limit to miniaturization.
  • Such a dielectric waveguide filter is described in Korean Patent Laid-Open No. 10-2012-0104114. Accordingly, there is an increasing demand for a dielectric waveguide filter in which the process of adjusting the RF characteristics of the filter is simple and can be sufficiently miniaturized.
  • a waveguide filter includes a ceramic block having a conductive coating layer formed on its surface; an input terminal and an output terminal formed on one surface of the ceramic block; A first resonance group formed on the other surface opposite to the one surface, the first resonance group including an input groove opposed to the input terminal and a plurality of resonance grooves arranged in one direction from the input groove, an output groove opposed to the output terminal, and the a resonance unit including a second resonance group including a plurality of resonance grooves arranged in parallel with the first resonance group from the output groove; a plurality of through portions positioned between each resonance groove forming the first resonance group and the second resonance group; a coupling part positioned between the resonance groove furthest from the input groove in the first resonance group and the resonance groove furthest from the output groove in the second resonance group; and a blocking part positioned between the first resonance group and the second resonance group and including a plurality of blocking holes arranged in the one direction, wherein the input terminal and the output terminal are electrically connected to the conductive coating layer spaced
  • the conductive coating layer is spaced apart from the periphery of the protruding line, and the first spaced distance between one side of the protruding line and the conductive coating layer with respect to the protruding line is between the other side of the protruding line and the conductive coating layer. It may be different from the second separation interval.
  • the line width of the protruding line may be smaller than the first and second separation intervals, the length of the protruding line may be larger than a diameter of the recessed groove, and smaller than the interval between the input terminal and the output terminal.
  • protruding line provided in the input terminal and the protruding line provided in the output terminal may protrude in opposite directions.
  • the first resonance group may include the input groove, a first resonance groove adjacent to the input groove, and a second resonance groove furthest from the input groove.
  • the through portion may include: a first through portion positioned between the input groove and the first resonance groove; and a second through part positioned between the first resonance groove and the second resonance groove and extending longer in a direction orthogonal to the one direction than the first through part.
  • the blocking part may be adjacent to the input groove and the first resonance groove, and the coupling part may be positioned adjacent to the second resonance groove.
  • a penetrating portion may pass through the ceramic block from the one surface to the other surface, the openings formed by the through portion on the one surface and the other surface may be formed in a rectangular shape, and the opening may be formed in a long longitudinal direction in a direction orthogonal to the one direction.
  • the through portion may include a first through portion and a second through portion, and the opening of the second through portion may extend longer in a direction perpendicular to the one direction than the opening of the first through portion.
  • the penetrating portion may be located to be biased outside the center line connecting the centers of the adjacent resonance grooves.
  • the coupling part may be formed as a groove in the other surface of the ceramic block, and the opening formed in the other surface may be formed in a square shape.
  • the opening may be formed in a long rectangle in an arrangement direction of the blocking holes.
  • the size of the opening of the blocking hole is smaller than the opening of the resonance groove, and a plurality of openings may be formed.
  • the waveguide filter according to an embodiment of the present invention has an effect that the process of adjusting the RF characteristics is simple and it is easy to secure the accuracy of the process.
  • the waveguide filter according to an embodiment of the present invention can greatly improve the spurious characteristics of the waveguide filter of the waveguide filter by providing a protruding line at the input/output terminal provided in the waveguide filter.
  • FIG. 1 is a perspective view of a waveguide filter according to an embodiment of the present invention.
  • FIG. 2 is a view for explaining the rear surface of the waveguide filter according to an embodiment of the present invention.
  • FIG 3 is a graph illustrating a frequency response characteristic of a waveguide filter according to an embodiment of the present invention.
  • 4 and 5 are diagrams for explaining the effect of the protruding line of the input/output terminal shown in FIG. 2 .
  • FIG. 6 is a view for explaining a modification example of the protruding line of the input/output terminal in FIG. 2B .
  • FIGS. 1 to 3 a waveguide filter according to an embodiment of the present invention will be described with reference to FIGS. 1 to 3 .
  • FIG. 1 is a perspective view of a waveguide filter 1 according to an embodiment of the present invention
  • FIG. 2 is a road for explaining the rear surface of the waveguide filter 1 according to an embodiment of the present invention
  • FIG. (a) is a rear perspective view of the waveguide filter (1)
  • (b) is an enlarged view of part B in which the input terminal 200 and the output terminal 300 are formed in (a) of FIG. .
  • the waveguide filter 1 of the present invention is mainly mounted on a device for wireless communication in order to pass only a desired frequency band. In particular, it can be mounted on a satellite or mobile communication base station using a lot of power.
  • the waveguide filter 1 of the present invention uses a resonance phenomenon as a filter manufactured to minimize transmission loss in a device using a high-band frequency.
  • the waveguide filter 1 of the present invention has a ceramic block 100, an input terminal 200, an output terminal 300, a resonance part 400, and a penetration part 500. , including a coupling part 600 and a blocking part 700 .
  • the ceramic block 100 may be formed in a hexahedral shape as a whole, a ceramic material that is an insulating material is positioned therein, and a conductive coating layer 110 is coated on the surface to be formed.
  • An input terminal 200 and an output terminal 300 are formed on one surface of the ceramic block 100, and the resonance part 400, the penetrating part 500, the coupling part 600 and the blocking part are formed on the other surface opposite to the one surface. 700 is formed.
  • one surface of the ceramic block 100 corresponds to the lower surface, and the other surface corresponds to the upper surface.
  • the input terminal 200 and the output terminal 300 are symmetrically formed one by one on one surface of the ceramic block 100 .
  • the input terminal 200 and the output terminal 300 function so that the waveguide filter 1 of the present invention can be electrically connected to an external device.
  • the input terminal 200 and the output terminal 300 may be spatially separated from the surrounding conductive coating layer 110 and electrically separated from each other.
  • an insulating part may be positioned in a space spaced apart between the input/output terminals 200 and 300 and the surrounding conductive coating layer 110, and accordingly, the input/output terminals 200 and 300 are surrounded by the insulating part, respectively. can be formed in the form.
  • the insulating portion may be a portion in which the conductive coating layer 110 is not formed on the surface of the ceramic block 100 and the ceramic is exposed.
  • the insulating part may be formed in a circular annular shape surrounding the input terminal 200 or the output terminal 300 .
  • Such an input terminal 200 and an output terminal 300 may include a recessed terminal part P1 and a protruding line P2.
  • the recessed terminal part P1 may be coated with a metal material in and around the recessed groove and the recessed groove.
  • the recessed terminal part P1 may have, for example, a metal outer line formed in a circular shape, and is recessed into the ceramic block inside the circular outer line.
  • a recessed groove is provided, and an inner surface of the recessed groove may be coated with a metal material.
  • the metal material provided in the recessed terminal part P1 may be formed of the same material as the conductive coating layer 110 .
  • the protruding line P2 may be elongated and thin as a metal material protrudes from the recessed terminal portion P1 .
  • the protruding line P2 provided in the input terminal 200 and the protruding line P2 provided in the output terminal 300 may protrude in opposite directions.
  • Such a protruding line P2 suppresses a harmonic wave component of a band corresponding to an odd multiple of a center frequency band-passed by the waveguide filter 1 according to an example of the present invention, and the waveguide By appropriately limiting the noise of the filter 1, the spurious characteristic of the waveguide filter 1 itself can be improved.
  • the conductive coating layer 110 may be spaced apart from the protruding line P2, and the protruding line P2 is formed around the protruding line P2.
  • the first spacing D1 between one side and the conductive coating layer 110 may be different from the second spacing D2 between the other side of the protruding line P2 and the conductive coating layer 110 .
  • the line width W1 of the protruding line P2 is smaller than the first and second separation intervals D1 and D2, and the length L1 of the protruding line P2 is greater than the diameter R1 of the recessed groove, and the input terminal It may be smaller than the interval L2 between 200 and the output terminal 300 .
  • the size of the desired nth harmonic component can be attenuated. Accordingly, the noise component of the waveguide filter 1 can be improved.
  • the resonator 400 is formed on the other surface opposite to one surface of the ceramic block 100 .
  • the resonance unit 400 includes a plurality of resonance grooves.
  • the resonator 400 may include a first resonant group 410 and a second resonant group 420 that are formed of a plurality of resonant grooves and face each other to be symmetrical.
  • the first resonance group 410 may include a plurality of resonance grooves, for example, three or more resonance grooves.
  • the input groove 411 formed on the other surface to face the input terminal 200 described above, the first resonance groove 412 located closest to the input groove 411, and the first resonance groove 411 located farthest from the input groove 411 . 2 may include a resonance groove 413 .
  • the input groove 411 , the first resonance groove 412 , and the second resonance groove 413 may be formed as cylindrical grooves dug inward from the other surface of the ceramic block 100 .
  • the input groove 411 , the first resonance groove 412 , and the second resonance groove 413 may be formed to be arranged in one direction. Accordingly, as shown in FIG. 1 , a center line 414 connecting the centers of the input groove 411 , the first resonance groove 412 , and the second resonance groove 413 may be formed in a straight line.
  • the second resonance group 420 may include a plurality of resonance grooves, for example, three or more resonance grooves.
  • the output groove 423 formed on the other surface to face the above-described output terminal 300 , the third resonance groove 421 located farthest from the output groove 423 , and the third resonance groove 423 located closest to the output groove 423 . 4 may include a resonance groove 422 .
  • the output groove 423 , the third resonance groove 421 , and the fourth resonance groove 422 may be formed as cylindrical grooves dug inward from the other surface of the ceramic block 100 .
  • the output groove 423 , the third resonance groove 421 , and the fourth resonance groove 422 may be formed to be arranged in one direction. Through this, the resonance grooves constituting the second resonance group 420 may be arranged to be parallel to the resonance grooves constituting the first resonance group 410 .
  • the electric signal applied to the input terminal 200 is transmitted through the resonance grooves of the first resonance group 410 and the second resonance group 420 .
  • This electrical signal may be applied to an external device by the output terminal 300 .
  • the electrical signal applied through the input terminal 200 is the input groove 411, the first resonance groove 412, the second resonance groove 413, the third resonance groove 421, the fourth resonance groove ( 422) and the output groove 423 sequentially.
  • An electrical signal having a specific frequency characteristic while passing through the resonance unit is output to the outside through the output terminal 300 .
  • a plurality of through portions 500 may be formed between each of the resonance grooves forming the resonance part 400 .
  • the penetrating portion 500 is formed to penetrate from one surface to the other.
  • the opening formed on one surface or the other surface of the through part 500 may be formed in a rectangular shape.
  • the opening of the through part 500 may be formed in a long rectangle in a direction orthogonal to one direction.
  • the through portion 500 may include a first through portion 510 , a second through portion 520 , a third through portion 530 , and a fourth through portion 540 .
  • the first through portion 510 is positioned between the input groove 411 and the first resonance groove 412 .
  • the second through part 520 is positioned between the first resonance groove 412 and the second resonance groove 413 .
  • the second through portion 520 may extend longer in a rectangle than the first through portion 510 in a direction orthogonal to one direction.
  • the first through portion 510 and the second through portion 520 are adjacent resonance grooves, specifically, a center line 414 connecting the centers of the input groove 411 , the first resonance groove 412 , and the second resonance groove 413 . ) may be located more biased to the outside.
  • the third through part 530 is positioned between the third resonance groove 421 and the fourth resonance groove 422 .
  • the fourth through portion 540 is positioned in the fourth resonance groove 422 and the output groove 423 .
  • the third through portion 530 may extend longer in a rectangle than the fourth through portion 540 in a direction orthogonal to one direction.
  • the third through portion 530 and the fourth through portion 540 are adjacent resonance grooves, specifically, an output groove 423 , a third resonance groove 421 , and a center line 414 connecting the centers of the fourth resonance groove 422 . ) may be located more biased to the outside.
  • the waveguide filter 1 of the present invention can be tuned so that the electric signal applied to the input terminal 200 has a specific frequency characteristic through the shape and arrangement of the through part 500 . That is, since changing the shape and arrangement of the through part 500 requires only a simple process change, the process of adjusting the RF characteristics of the waveguide filter 1 of the present invention is relatively simple. In addition, since the shape of the through part 500 is not complicated and simple, it is easy to secure the accuracy of the process compared to having a relatively complicated shape.
  • the coupling part 600 is formed as a groove recessed inward from the other surface of the ceramic block 100 .
  • the coupling part 600 is between the resonance groove furthest from the input groove 411 of the first resonance group 410 and the resonance groove furthest from the output groove 423 of the second resonance group 420. is located in Accordingly, the coupling part 600 may be positioned between the second resonance groove 413 and the third resonance groove 421 .
  • the opening formed on the other surface of the coupling unit 600 may be formed in a rectangular shape. At this time, the opening of the coupling part 600 may be formed in a long rectangle in one direction.
  • the blocking unit 700 is positioned between the first resonance group 410 and the second resonance group 420 . At this time, the blocking part 700 is positioned adjacent to the input groove 411 and the first resonance groove 412 .
  • the blocking unit 700 includes a plurality of blocking holes 710 arranged in one direction.
  • the blocking hole 710 of the blocking part 700 is formed to penetrate from one surface to the other surface.
  • the opening formed on one surface or the other surface of the blocking hole 710 may be formed in a circular shape. Accordingly, the blocking hole 710 may be formed in the form of a cylindrical groove.
  • the size of the opening of the blocking hole 710 may be smaller than the size of the opening of the resonance groove.
  • the blocking hole 710 may be formed in more number than the resonance groove of the first resonance group 410 .
  • a plurality of blocking holes 710 may be formed than the resonance grooves of the second resonance group 420 . As shown in FIG. 1 , since each of the first resonance group 410 and the second resonance group 420 includes three resonance grooves, the blocking hole 710 may be formed with six more.
  • the waveguide filter 1 of the present invention can be tuned so that the electric signal applied to the input terminal 200 has a specific frequency characteristic through the shape and arrangement of the blocking hole 710 . That is, since changing the shape and arrangement of the blocking hole 710 requires only a simple process change, the process of adjusting the RF characteristics of the waveguide filter 1 of the present invention is relatively simple. In addition, since the shape of the blocking hole 710 is simple and not complicated, it is easy to secure the accuracy of the process compared to having a relatively complicated shape.
  • FIG 3 is a graph showing the frequency characteristics of the waveguide filter 1 of the present invention at a high band frequency.
  • S1,2 is a graph showing the frequency characteristics of the electrical signal applied to the output terminal 300 when the electrical signal is applied to the input terminal 200
  • S2,2 are the input terminal 200
  • It is a graph showing the frequency characteristics of the electric signal reflected to the input terminal 200 when the electric signal is applied.
  • S1,2 shows the frequency characteristics of the band pass filter in the 3.6 ⁇ 3.7 GHz band. That is, the electric signal of the corresponding frequency band is passed and the electric signal outside this band is removed so that the waveguide filter 1 of the present invention can perform the bandpass filter function in a specific band.
  • S2,2 shows the frequency characteristics of the band reject filter in the 3.6 ⁇ 3.7 GHz band. This means that the waveguide filter 1 of the present invention has a characteristic of having a small frequency response reflected to the input terminal 200 by passing the electric signal of the corresponding frequency band well.
  • the waveguide filter 1 includes a blocking unit 700 positioned between the first and second resonance groups 410 and 420, and thus a band pass filter in a band of 3.6 to 3.7 GHz. ), in a frequency band to be passed, by minimizing an insertion loss or an attenuation amount for an output signal compared to an input, it is possible to minimize the attenuation amount of the signal.
  • the blocking unit 700 as in the present invention when the blocking unit 700 as in the present invention is not provided, around the center frequency (eg, 3.65 Ghz), the edge portion of the pass band near the 3.6 GHz frequency and the 3.7 GHz frequency As the amount of attenuation of the signal increases in the vicinity, there is a characteristic that the output signal is attenuated by about 2 dB to 3 dB. It can be seen that the attenuation is minimized to the same level as the center frequency (3.65Ghz) even near the 3.6GHz frequency and near the 3.7GHz frequency.
  • the center frequency eg, 3.65 Ghz
  • FIG. 4 and 5 are roads for explaining the effect of the protruding line P2 described in FIG. 2
  • FIG. 4 shows a comparative example in the case where the protruding line P2 is not provided in the input/output terminals 200 and 300 It is a graph
  • FIG. 5 is an example showing a graph when the protruding line P2 is provided in the input/output terminals 200 and 300 as in the present invention.
  • the harmonic wave component of S1,2 is approximately -2dB to -3dB in a band higher than the passband. It can be seen that it rises to
  • the harmonic wave component of S1,2 is approximately -10dB below the passband. It can be seen that the spurious characteristic of the waveguide filter 1 is significantly improved.
  • the process of adjusting the RF characteristics is simple and it is easy to secure the accuracy of the process.
  • the waveguide filter 1 according to an embodiment of the present invention includes a protruding line P2 on the input/output terminals 200 and 300 provided in the waveguide filter 1, so that the waveguide filter 1 A spurious characteristic can be greatly improved.
  • the input/output terminals 200 and 300 of the present invention have been described as an example in which the protruding line P2 extends in any one direction from the recessed terminal portion P1 as shown in FIG. It is not limited. This will be described in more detail as follows.
  • FIG. 6 is a view for explaining a modification example of the protruding line of the input/output terminal in FIG. 2B .
  • the protruding line according to the modified example of the present invention may further include a second protruding line portion P3 and a third protruding line portion P4 in addition to the first protruding line portion P2 .
  • the first protruding line portion P2 may extend long in the outward direction from the recessed terminal portion P1, and the second protruding line portion P3 is a first protruding line portion ( It may extend in a direction intersecting with P2), and the third protruding line portion P4 intersects the second protruding line portion P3 formed at the end of the second protruding line portion P3, but the first protruding line portion It may extend toward the recessed terminal part P1 in a direction parallel to (P2).

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Abstract

La présente invention concerne un filtre de guide d'ondes et, plus particulièrement, un filtre de guide d'ondes ayant un trou continu. Un filtre de guide d'ondes selon un exemple de la présente invention comprend : un bloc céramique ayant une couche de revêtement conductrice formée sur celui-ci ; une borne d'entrée et une borne de sortie formées sur une surface du bloc céramique ; une unité de résonance qui est formée sur l'autre surface faisant face à la première surface et comprend un premier groupe de résonance comprenant une rainure d'entrée faisant face à la borne d'entrée et à plusieurs rainures de résonance et un second groupe de résonance comprenant une rainure de sortie faisant face à la borne de sortie et à plusieurs rainures de résonance ; plusieurs parties traversantes positionnées entre les rainures de résonance formant le premier groupe de résonance et le second groupe de résonance ; une unité de couplage positionnée entre une rainure de résonance la plus éloignée de la rainure d'entrée du premier groupe de résonance et une rainure de résonance la plus éloignée de la rainure de sortie du second groupe de résonance ; et une unité de blocage qui est positionnée entre le premier groupe de résonance et le second groupe de résonance et qui comprend plusieurs trous de blocage disposés dans une direction, les bornes d'entrée et de sortie comprenant : une partie borne évidée qui est électriquement espacée de la couche de revêtement conductrice et qui est revêtue d'un matériau métallique dans une rainure évidée et la périphérie de celle-ci ; et une ligne en saillie faisant saillie de la partie borne évidée.
PCT/KR2020/010748 2020-06-15 2020-08-13 Filtre de guide d'ondes WO2021256611A1 (fr)

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KR10-2020-0072645 2020-06-15
KR1020200072645A KR102363472B1 (ko) 2020-06-15 2020-06-15 웨이브가이드 필터

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JP2024508446A (ja) 2021-11-12 2024-02-27 エルジー エナジー ソリューション リミテッド リチウム二次電池用非水系電解液及びこれを含むリチウム二次電池

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CN109546270B (zh) * 2019-01-11 2020-07-28 华为技术有限公司 一种滤波器
JP2019083576A (ja) 2019-02-08 2019-05-30 華為技術有限公司Ｈｕａｗｅｉ Ｔｅｃｈｎｏｌｏｇｉｅｓ Ｃｏ．，Ｌｔｄ． 誘電体共振器、誘電体共振器を用いた誘電体フィルタ、送受信機、および基地局

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160380322A1 (en) * 2011-12-03 2016-12-29 Alexandre Rogozine Dielectric Waveguide Filter with Cross-Coupling RF Signal Transmission Structure
US20150077198A1 (en) * 2013-09-13 2015-03-19 Toko, Inc. Dielectric Waveguide Resonator and Dielectric Waveguide Filter Using the Same
JP2016171557A (ja) * 2015-03-13 2016-09-23 東光株式会社 誘電体導波管の入出力構造、誘電体導波管の実装構造、誘電体導波管フィルタおよびＭａｓｓｉｖｅＭＩＭＯシステム
KR20180072977A (ko) * 2016-12-22 2018-07-02 주식회사 케이엠더블유 도파관 필터
KR102085921B1 (ko) * 2019-06-21 2020-03-06 모아컴코리아주식회사 복수개의 유전체 블럭을 포함하는 세라믹 도파관 필터

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