WO2012036343A1 - Filtre passe-bas diélectrique du type résonateur et dispositif de télécommunication incluant celui-ci - Google Patents

Filtre passe-bas diélectrique du type résonateur et dispositif de télécommunication incluant celui-ci Download PDF

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Publication number
WO2012036343A1
WO2012036343A1 PCT/KR2010/008106 KR2010008106W WO2012036343A1 WO 2012036343 A1 WO2012036343 A1 WO 2012036343A1 KR 2010008106 W KR2010008106 W KR 2010008106W WO 2012036343 A1 WO2012036343 A1 WO 2012036343A1
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WO
WIPO (PCT)
Prior art keywords
pattern
resonator
disposed
pass filter
low pass
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PCT/KR2010/008106
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English (en)
Korean (ko)
Inventor
류지만
장대훈
김남철
피터스 제임스엠
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(주)파트론
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Publication of WO2012036343A1 publication Critical patent/WO2012036343A1/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
    • H01P1/203—Strip line filters
    • H01P1/2039—Galvanic coupling between Input/Output

Definitions

  • the present invention relates to a resonator type dielectric low pass filter and a communication element comprising the same.
  • low pass filters used in wireless communication systems are manufactured in the form of LC concentrators, micro strip lines, or LTCCs.
  • the low pass filter manufactured by the LC lumped element has a high insertion loss in the circuit and it is very difficult to implement in the high frequency region of the GHz band.
  • the low pass filter manufactured by the micro strip line is mounted on the communication device, The disadvantage is that it takes up a relatively large physical space compared to the others.
  • the low pass filter manufactured in the LTCC form has a large insertion loss in the circuit as well as a disadvantage that tuning is impossible.
  • the present invention has been made in an effort to provide a resonator type dielectric low pass filter capable of obtaining a low insertion loss and a rapid attenuation characteristic while occupying a relatively narrow space when mounted in a communication device.
  • Another technical problem to be solved by the present invention is to provide a communication device mounted with the resonator type dielectric low pass filter.
  • One aspect of the resonator type dielectric low pass filter of the present invention for achieving the above technical problem is a dielectric block having a resonance hole, a ground pattern disposed on at least one surface of the dielectric block, disposed on the dielectric block, and grounded Input and output patterns spaced apart from the ground pattern to form patterns and first and second capacitors respectively, a resonator pattern disposed in the inner wall of the resonant hole and having a cavity in the center thereof, and an input / output pattern and a resonator pattern on the dielectric block And an inductor pattern disposed to be connected to the inductor.
  • the ground terminal, the signal input terminal and the signal output terminal is formed; And a resonator type dielectric low pass filter mounted on the substrate, wherein the resonator type dielectric low pass filter comprises: a dielectric block having a resonance hole formed therein, a ground pattern disposed on at least one surface of the dielectric block and connected to a ground terminal; An input / output pattern disposed apart from the ground pattern and connected to the signal input terminal and the signal output terminal to form a ground pattern on the block and first and second capacitors, respectively, and disposed at an inner wall of the resonance hole, and having a cavity at the center thereof And a resonator pattern and an inductor pattern disposed on the dielectric block to be connected to the input / output pattern and the resonator pattern.
  • the resonator type dielectric low pass filter according to the embodiments of the present invention is formed on the dielectric block to occupy a relatively narrow space when mounted in a communication device, and the insertion loss in the circuit is low, and the abrupt attenuation characteristics are realized. This has a possible advantage.
  • FIG 1 and 2 are perspective views of the resonator type dielectric low pass filter according to the first embodiment of the present invention, respectively, as viewed from above and below.
  • FIG. 3 is an equivalent circuit diagram of a resonator type dielectric low pass filter according to a first embodiment of the present invention.
  • FIGS. 4 and 5 are perspective views of the resonator type dielectric low pass filter according to the second embodiment of the present invention as viewed from the top and bottom, respectively.
  • FIG. 6 is an equivalent circuit diagram of a resonator type dielectric low pass filter according to a second embodiment of the present invention.
  • FIG. 7 and 8 are perspective views as viewed from the top and bottom of the resonator type dielectric low pass filter according to the third embodiment of the present invention, respectively.
  • FIG. 9 is an equivalent circuit diagram of a resonator type dielectric low pass filter according to a third embodiment of the present invention.
  • 10 to 12 are diagrams for explaining the frequency response characteristics of the resonator type dielectric low pass filter in accordance with embodiments of the present invention.
  • FIG. 13 is a perspective view from above of a communication device according to an embodiment of the present invention.
  • first, second, etc. are used to describe various components, these components are of course not limited by these terms. These terms are only used to distinguish one component from another. Therefore, of course, the first component mentioned below may be a second component within the technical spirit of the present invention.
  • FIGS. 1 to 3 a resonator type dielectric low pass filter according to a first embodiment of the present invention will be described with reference to FIGS. 1 to 3.
  • FIG. 1 and 2 are perspective views of the resonator type dielectric low pass filter according to the first embodiment of the present invention, respectively, as viewed from above and below.
  • 3 is a circuit diagram of a resonator type dielectric low pass filter according to a first embodiment of the present invention.
  • the resonator type dielectric low pass filter 100 includes a dielectric block 10, a ground pattern 30 and 31, an input / output pattern 40 and 50,
  • the first resonator patterns 61a to 61c and the first and second inductor patterns 71 and 72 may be included.
  • the dielectric block 10 may be a mono block in which a dielectric material is formed in a hexahedral shape as shown in FIGS. 1 and 2.
  • the first resonance hole 21 may be formed in the dielectric block 10.
  • the first resonator hole 21 is a hole in which a conductor is applied to an inner wall thereof to form a resonator (Re1 of FIG. 3), and may have a circular shape as shown in FIGS. 1 and 2.
  • FIGS. 1 and 2 illustrate that the hexagonal dielectric block 10 and the circular first resonance hole 21 are formed in the center of the dielectric block 10, the present invention is not limited thereto.
  • the shape of the dielectric block 10 is not limited to the shape of a hexahedron, and the shape of the first resonance hole 21 is not limited to a circle. That is, if necessary, the shape of the dielectric block 10 may be deformed differently from the drawing, and the shape of the first resonator hole 21 may be deformed differently from the drawing if the shape of the first resonator hole 21 is effective to form a resonator. Do.
  • Ground patterns 30 and 31 may be disposed on at least one surface of the dielectric block 10. 1 and 2 illustrate that the first ground pattern 30 and the second ground pattern 31 face each other on the front and rear surfaces of the dielectric block 10, but the present invention is not limited thereto. One of the first ground pattern 30 and the second ground pattern 31 may be omitted as necessary. In addition, although not shown, it is also possible to further arrange the third or fourth ground pattern (not shown) if necessary. 1 and 2, the first ground pattern 30 and the second ground pattern 31 are formed on the front and rear surfaces of the dielectric block 10, respectively, and the dielectric having the input / output patterns 40 and 50 formed thereon.
  • a portion of the left and right surfaces of the block 10 may be formed to be spaced apart from the input / output patterns 40 and 50 by a predetermined interval, respectively.
  • These ground patterns 30 and 31 serve as ground electrodes while the resonator type dielectric low pass filter 100 is operating.
  • the input / output patterns 40 and 50 may serve as input lines for receiving signals input to the resonator type dielectric low pass filter 100 and output lines for outputting signals output from the resonator type dielectric low pass filter 100.
  • the input / output patterns 40 and 50 have a first pattern 40 that is uniform with the ground patterns 30 and 31 on the lower, right and upper surfaces of the dielectric block 10.
  • the second pattern 50 may be disposed to be spaced apart from each other, and the second pattern 50 may be disposed to be spaced apart from the ground patterns 30 and 31 on the lower surface, the left surface, and the upper surface of the dielectric block 10, but the first pattern 40 may be spaced apart. ) May be arranged to face.
  • the first pattern 40 may be disposed to be spaced apart from the ground patterns 30 and 31 by a predetermined interval to form the first capacitor C1
  • the second pattern 50 may be uniform with the ground patterns 30 and 31.
  • the second capacitor C2 may be formed by being spaced apart from each other. That is, the input / output patterns 40 and 50 play a role of a line through which an input signal and an output signal flow, and also serve as the first and second capacitors C1 and C2 using the ground patterns 30 and 31 as other electrodes. Can be performed. Therefore, the input / output patterns 40 and 50 should be arranged to be spaced apart from the ground patterns 30 and 31 as shown in FIGS. 1 and 2.
  • the first resonator patterns 61a to 61c may be formed by applying a conductor to an inner wall of the first resonator hole 21.
  • the first resonator patterns 61a to 61c may include a first upper pattern 61a disposed on the top surface of the dielectric block 10 so as to be connected to the first and second inductor patterns 71 and 72, and a first resonant hole.
  • the lower surface of the dielectric block 10 may include a first lower pattern 61c disposed to be connected to the first internal pattern 61b and spaced apart from the ground patterns 30 and 31.
  • the first lower pattern 61c is disposed to be spaced apart from the ground patterns 30 and 31 by a predetermined interval to form the third capacitor C3, the first lower pattern 61c is grounded as shown in FIG. 2. It should be arranged to be spaced apart from the pattern (30, 31).
  • the first resonator patterns 61a to 61c may serve as a first resonator (Re1 of FIG. 3) together with the first resonator hole 21 in the resonator type dielectric low pass filter 100. 1 and 2, the area of the first lower pattern 61c may be larger than the area of the first upper pattern 61a. However, this is only one example, and the area of the first lower pattern 61c and the area of the first upper pattern 61a may be modified differently as necessary.
  • the first inductor pattern 71 is disposed on the upper surface of the dielectric block 10, and the first pattern 40 and the first resonator patterns 61a to 61c of the input / output patterns 40 and 50 are formed. It may be disposed to connect the first upper pattern (61a) of the, and the second inductor pattern 72 is disposed on the upper surface of the dielectric block 10, as shown in Figure 1, the input and output patterns (40, 50) It may be arranged to connect the second pattern 50 of the first pattern and the first upper pattern (61a) of the first resonator patterns (61a ⁇ 61c).
  • the first and second inductor patterns 71 and 72 may serve as the first and second inductors L1 and L2 in the resonator type dielectric low pass filter 100, respectively. Accordingly, the first and second inductor patterns 71 and 72 have predetermined inductance values as the resonator type dielectric low pass filter 100 of the present invention operates.
  • the present invention is not limited to the shapes shown in FIGS. 1 and 2. That is, if the function as described above can be exhibited, the shape of the dielectric block 10, the ground patterns 30 and 31, the input and output patterns 40 and 50, the first resonator patterns 61a to 61c, and the first and the first
  • the arrangement of the two inductor patterns 71 and 72 can be modified in any way. In the following, further two embodiments will be further described in the modified embodiments.
  • FIG. 4 and 5 are perspective views of the resonator type dielectric low pass filter according to the second embodiment of the present invention, respectively, and FIG. 6 is a perspective view of the resonator type dielectric low pass filter according to the second embodiment of the present invention. It is a circuit diagram.
  • the description of the resonator type dielectric low pass filter according to the first embodiment of the present invention will be omitted. That is, only the differences will be described below, and like reference numerals denote like elements.
  • the resonator type dielectric low pass filter 100 includes a second resonator hole 22, second resonator patterns 62a to 62c, and a third inductor pattern. (73) may be further included.
  • the shape of the second resonance hole 22 may be the same as the shape of the first resonance hole 21. That is, the second resonance hole 22 may be, for example, a circular hole having the same shape as that of the first resonance hole 21.
  • the second resonator patterns 62a to 62c may include a second upper pattern 62a disposed on the upper surface of the dielectric block 10 so as to be connected to the second and third inductor patterns 72 and 73, and the second resonator hole 22.
  • the lower surface may include a second lower pattern 62c disposed to be connected to the second internal pattern 62b and spaced apart from the ground patterns 30 and 31.
  • the second lower pattern 62c is disposed to be spaced apart from the ground patterns 30 and 31 by a predetermined interval to form the fourth capacitor C4, the second lower pattern 62c is grounded as shown in FIG. 5. It should be arranged to be spaced apart from the pattern (30, 31).
  • the second resonator patterns 62a to 62c may serve as the second resonator Re2 together with the second resonator hole 22 in the resonator type dielectric low pass filter 100.
  • the first lower pattern 61c and the second lower pattern 62c may be spaced apart from each other to form the seventh capacitor C7. Therefore, the first lower pattern 61c and the second lower pattern 62c should be disposed to be spaced apart from each other.
  • the areas of the first lower pattern 61c and the second lower pattern 62c may be different from each other. That is, the capacitance value of the third capacitor C3 and the capacitance value of the fourth capacitor C4 may be different from each other.
  • the third inductor pattern 73 is disposed on the upper surface of the dielectric block 10 so as to connect the output pattern 50 and the second upper pattern 62a of the second resonator pattern. And may serve as the third inductor L3 in the resonator type dielectric low pass filter 100. Accordingly, the third inductor pattern 73 has a predetermined inductance value as the resonator type dielectric low pass filter 100 operates.
  • FIG. 7 and 8 are perspective views of a resonator type dielectric low pass filter according to a third embodiment of the present invention, respectively, and FIG. 9 is a perspective view of the resonator type dielectric low pass filter according to a third embodiment of the present invention. It is a circuit diagram. Similarly, hereinafter, for convenience of description, descriptions of the resonator type dielectric low pass filter according to the first and second embodiments of the present invention will be omitted. That is, only the differences will be described below, and like reference numerals denote like elements.
  • the resonator type dielectric low pass filter 100 may include the third and fourth resonator holes 23 and 24, and the third and fourth resonator patterns 63a. ⁇ 63c, 64a to 64c, and fourth and fifth inductor patterns 74 and 75.
  • the size and shape of the third and fourth resonance holes 23 and 24 may be the same as the size and shape of the first and second resonance holes 21 and 22.
  • the third resonator patterns 63a to 63c may include a third upper pattern 63a disposed on the upper surface of the dielectric block 10 so as to be connected to the third and fourth inductor patterns 73 and 74, and a third resonant hole. (23) A third internal pattern 63b and a dielectric block disposed on the inner wall to be connected to the third upper pattern 63a and the third lower pattern 63c, and having a predetermined cavity in the center thereof.
  • the lower surface may include a third lower pattern 63c disposed to be connected to the third internal pattern 63b and spaced apart from the ground patterns 30 and 31.
  • the third lower pattern 63c is disposed to be spaced apart from the ground patterns 30 and 31 by a predetermined interval to form the fifth capacitor C5
  • the third lower pattern 63c is grounded as shown in FIG. 8. It should be arranged to be spaced apart from the pattern (30, 31).
  • the fourth resonator patterns 64a to 64c may include a fourth upper pattern 64a disposed on the upper surface of the dielectric block 10 so as to be connected to the fourth and fifth inductor patterns 74 and 75, and a fourth resonator hole.
  • the lower surface may include a fourth lower pattern 64c disposed to be connected to the fourth internal pattern 64b and spaced apart from the ground patterns 30 and 31.
  • the fourth lower pattern 64c is disposed to be spaced apart from the ground patterns 30 and 31 by a predetermined interval to form the sixth capacitor C6, the fourth lower pattern 64c is also grounded as shown in FIG. 8. It should be arranged to be spaced apart from the pattern (30, 31).
  • the third and fourth resonator patterns 63a to 63c and 64a to 64c are formed in the resonator type dielectric low pass filter 100 together with the third and fourth resonator holes 23 and 24, respectively.
  • Re3, Re4 can play a role.
  • the second lower pattern 62c and the third lower pattern 63c may be spaced apart from each other as shown in FIG. 8 to form an eighth capacitor C8, and the third lower pattern 63c
  • the fourth lower pattern 64c may be spaced apart from each other to form a ninth capacitor C9. Therefore, the second lower pattern 62c, the third lower pattern 63c, and the fourth lower pattern 64c should be disposed to be spaced apart from each other.
  • areas of the second lower pattern 62c and the third lower pattern 63c may be different from those of the first lower pattern 61c and the fourth lower pattern 64c.
  • any one of the first to fourth lower patterns 61c to 64c may have an area different from the rest. That is, only one of the third to sixth capacitors C3 to C6 may have a different capacitance value.
  • the fourth and fifth inductor patterns 74 and 75 are disposed on the upper surface of the dielectric block 10 as shown in FIG. 7, and the third upper patterns 63a of the third resonator patterns 63a to 63, respectively. And the fourth upper pattern 64a of the fourth resonator patterns 64a to 64c and the fourth upper pattern 64a of the fourth resonator patterns 64a to 64c and the output pattern 50.
  • the fourth and fifth inductor patterns 74 and 75 may serve as the fourth and fifth inductors L4 and L5 in the resonator type dielectric low pass filter 100, respectively. Accordingly, the fourth and fifth inductor patterns 74 and 75 have predetermined inductance values as the resonator type dielectric low pass filter 100 operates.
  • 10 to 12 are diagrams for explaining the frequency response characteristics of the resonator type dielectric low pass filter in accordance with embodiments of the present invention.
  • the resonator type dielectric low pass filter exhibits a response characteristic of the low pass filter. Specifically, as the number of resonators Re1 to Re4 formed by the resonance holes 21 to 24 and the resonance patterns 61a to 61c, 62a to 62c, 63a to 63c, and 64a to 64c increases, the abrupt attenuation characteristics are more rapid. It can be seen that. (See S21 of FIGS. 10-12)
  • FIG. 11 shows the frequency response characteristics of the resonator type dielectric low pass filter according to the second embodiment of the present invention
  • FIG. 10 shows the frequency response characteristics of the resonator type dielectric low pass filter according to the first embodiment of the present invention.
  • a sharper attenuation characteristic is shown after the cutoff frequency (C).
  • C shows cutoff frequency
  • FIG. 12 shows frequency response characteristics of the resonator type dielectric low pass filter according to the third embodiment of the present invention.
  • FIG. 12 shows frequency response characteristics of the resonator type dielectric low pass filter according to the first and second embodiments of the present invention.
  • a more rapid attenuation characteristic is shown after the cutoff frequency C.
  • the resonator type dielectric low pass filter according to the embodiments of the present invention works very well as a low pass filter in the circuit, and furthermore, the attenuation characteristics of the signal by adjusting the number of resonators Re1 to Re4. It can be seen that it can also be adjusted. That is, since the number of resonators Re1 to Re4 can be increased as necessary, it is possible to implement a sudden attenuation characteristic.
  • the resonator type dielectric low pass filter according to the embodiments of the present invention is formed on the dielectric block 10, it occupies a relatively narrow space when mounted in a communication device, and also has low insertion loss in a circuit. There is this.
  • FIG. 13 is a perspective view from above of a communication device according to an embodiment of the present invention.
  • a communication device 200 may include a substrate 210 and a resonator type dielectric low pass filter 100 according to embodiments of the present invention mounted on the substrate 210. ) May be included.
  • the substrate 210 is a component constituting the base of the communication element, and although not shown on the substrate 210, a signal input terminal (not shown) through which a communication signal is input and a signal from which a communication signal is output. An output terminal (not shown) and a ground terminal (not shown) connected to the ground electrode may be formed.
  • the resonator type dielectric low pass filter 100 may be mounted on the substrate 210 by, for example, a surface mounting technology (SMT) method, and the ground patterns 30 and 31 may be disposed on the substrate.
  • the ground terminal 210 and the input / output patterns 40 and 50 of the 210 may be mounted to be connected to the signal input terminal (not shown) and the signal output terminal (not shown) of the substrate 210, respectively.
  • the invention is applicable to the telecommunications industry using low pass filters. However, it is not limited thereto.

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

Abstract

L'invention concerne un filtre passe-bas diélectrique du type résonateur. Ce filtre passe-bas diélectrique du type résonateur comprend: un bloc diélectrique dans lequel un trou de résonance est formé; un motif de masse, placé au moins sur un côté du bloc diélectrique; un motif d'entrée/sortie, placé sur le bloc diélectrique et qui est espacé par rapport au motif de masse de manière à former le motif de masse et un premier et un second condensateur; un motif de résonateur, placé sur une paroi intérieure du trou de résonance et qui comporte une cavité en son milieu; et un motif d'inducteur, placé sur le bloc diélectrique en vue d'être connecté au motif d'entrée/sortie et au motif de résonateur.
PCT/KR2010/008106 2010-09-15 2010-11-16 Filtre passe-bas diélectrique du type résonateur et dispositif de télécommunication incluant celui-ci WO2012036343A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020100090544A KR101161122B1 (ko) 2010-09-15 2010-09-15 공진기 타입 유전체 저역 통과 여파기 및 그를 포함하는 통신 소자
KR10-2010-0090544 2010-09-15

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WO2012036343A1 true WO2012036343A1 (fr) 2012-03-22

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Publication number Priority date Publication date Assignee Title
KR200486977Y1 (ko) * 2016-09-05 2018-07-20 윌신 테크놀로지 코포레이션 저지 대역 노이즈 억제를 갖는 로우 패스 필터

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06164205A (ja) * 1992-11-17 1994-06-10 Oki Electric Ind Co Ltd 誘電体フィルタ
KR20000041041A (ko) * 1998-12-21 2000-07-15 이형도 일체형 유전체 필터
KR20030049662A (ko) * 2001-12-17 2003-06-25 주식회사 케이이씨 듀플렉서의 송신대역 통과필터
JP2004242067A (ja) * 2003-02-06 2004-08-26 Ngk Spark Plug Co Ltd 誘電体電子部品及その減衰量の調整方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06164205A (ja) * 1992-11-17 1994-06-10 Oki Electric Ind Co Ltd 誘電体フィルタ
KR20000041041A (ko) * 1998-12-21 2000-07-15 이형도 일체형 유전체 필터
KR20030049662A (ko) * 2001-12-17 2003-06-25 주식회사 케이이씨 듀플렉서의 송신대역 통과필터
JP2004242067A (ja) * 2003-02-06 2004-08-26 Ngk Spark Plug Co Ltd 誘電体電子部品及その減衰量の調整方法

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KR20120028594A (ko) 2012-03-23

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