WO2005074069A1 - 高周波モジュール用部品および高周波モジュール - Google Patents
高周波モジュール用部品および高周波モジュール Download PDFInfo
- Publication number
- WO2005074069A1 WO2005074069A1 PCT/JP2005/000844 JP2005000844W WO2005074069A1 WO 2005074069 A1 WO2005074069 A1 WO 2005074069A1 JP 2005000844 W JP2005000844 W JP 2005000844W WO 2005074069 A1 WO2005074069 A1 WO 2005074069A1
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- WO
- WIPO (PCT)
- Prior art keywords
- frequency module
- waveguide
- component
- short
- contact
- Prior art date
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Classifications
-
- 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
- H01P1/208—Cascaded cavities; Cascaded resonators inside a hollow waveguide structure
- H01P1/2088—Integrated in a substrate
Definitions
- the present invention relates to a component for a high-frequency module which is mounted on a substrate to constitute a high-frequency module for electromagnetic waves (high-frequency signals) such as microwaves and millimeter waves, and a component for the high-frequency module. It is related to the high frequency module used
- a high-frequency module (waveguide-type filter) disclosed in Japanese Patent Application Laid-Open No. 2003-273605 is known as a high-frequency module using this type of high-frequency module component.
- This waveguide filter includes a housing 20 and a substrate 9 as components for a high-frequency module.
- the housing 20 is formed as a metal box having a lower surface opened and a plurality of partitions 23 disposed therein.
- the substrate 9 includes a ground electrode 8 formed to have an area covering an opening on the lower surface of the housing 20, and a signal transmission path 60 connected to one side of the ground electrode 8. Are formed on the surface.
- the waveguide type filter is configured such that a housing 20 is mounted on a portion of the substrate 9 where the ground electrode 8 is formed.
- a cavity resonator is formed between the inner surface of the housing 20 and the ground electrode 8, and the signal (TEM mode electromagnetic wave) transmitted through the signal transmission path 60 is transmitted through the signal transmission path.
- the magnetic field is coupled to the TE mode electromagnetic wave in the cavity resonator.
- the conventional high-frequency module described above has the following problems. That is, in this high-frequency module, since the signal transmission path 60 and the ground electrode 8 are joined to the surface of the substrate 9 by bonding, the TEM mode electromagnetic wave generated around the signal transmission path 60 at the joint between the two. Is passed through the space above the signal transmission path 60 and the inside of the substrate 9 below the signal transmission path 60. For this reason, the magnetic field density of the electromagnetic wave passing through the inside of the substrate 9 having a large relative permittivity is strong, and the magnetic field density of the electromagnetic wave passing through the space having a small relative permittivity is weak. Magnetic field density deviation between inside and outside Becomes larger.
- this high-frequency module has a problem that a large loss is caused due to a low efficiency in converting a TEM mode electromagnetic wave into a TE mode electromagnetic wave.
- the input section is used as an output section of a high-frequency module, the conversion efficiency when converting the electromagnetic wave of the TE mode to the electromagnetic wave of the TEM mode is low, and thus there is a problem that the input loss is similarly large. .
- the present invention has been made to solve a powerful problem, and it is an object of the present invention to provide a high-frequency module component that can reduce insertion loss when used in a high-frequency module, and a high-frequency module with low insertion loss.
- the main purpose is to provide.
- a short-circuiting pillar is provided upright at a peripheral portion on the inner surface of the waveguide-type waveguide recess formed on one surface.
- the concave portion for a waveguide type waveguide and the concave portion for a blocking waveguide communicating with the concave portion for the waveguide type waveguide are respectively formed on the opposite sides.
- the short-circuiting column is formed upright at the boundary between the waveguide-type waveguide recess and the cut-off waveguide recess.
- a short-circuiting pillar be provided upright at the center portion in the width direction of the waveguide-type waveguide recess.
- the surface is formed by resin molding and at least the entire surface on one side is coated with a conductive material.
- a high-frequency module according to the present invention is provided so as to be in contact with the above-described high-frequency module component and one surface of the high-frequency module component, and to provide a waveguide at a contact surface with the high-frequency module component.
- a short-circuiting pillar is erected at the peripheral portion on the inner surface of the concave portion for a waveguide type waveguide formed on one surface, so that, for example, And a TEM mode line on the substrate
- a high-frequency module with no dielectric around the short-circuit pole by mounting the high-frequency module components so that the concave portion for use is closed by the ground electrode and the tip of the short-circuit pole is short-circuited to the TEM mode line. Can be. Therefore, by passing TEM mode (or TE mode) electromagnetic waves through this short-circuit pole, it can be converted to TE-mode (or TEM mode) electromagnetic waves.
- the bias of the magnetic field density is reduced. Therefore, a TEM mode electromagnetic wave having a strong magnetic field density and an electromagnetic wave in the waveguide are magnetically coupled. Therefore, mode conversion is efficiently performed between the electromagnetic waves in the TE mode and the electromagnetic waves in the TEM mode. As a result, the insertion loss of the high-frequency module can be reduced.
- the ground electrode is provided.
- the high-frequency module components on the substrate with the TEM mode line formed on the surface so that the concave portion for the waveguide waveguide is closed by the ground electrode and the tip of the short-circuit column is short-circuited with the TEM mode line.
- the cut-off waveguide recess functions as a cut-off waveguide, leakage of electromagnetic waves generated in the guide waveguide surrounded by the guide recess and the ground electrode to the outside. Can be reduced. Therefore, when used in a high-frequency module, the insertion loss of the high-frequency module can be further reduced as compared with a high-frequency module without a cut-off waveguide recess.
- the recess for the waveguide waveguide is provided.
- the magnetic field can be magnetically coupled to the TEM mode electromagnetic wave at the location where the magnetic field strength of the TE mode electromagnetic wave generated in the waveguide waveguide surrounded by the ground electrode and the ground electrode is maximized. Therefore, as a result that the TEM mode electromagnetic wave and the TE mode electromagnetic wave can be more magnetically coupled, the insertion loss of the high-frequency module can be further reduced.
- the component for a high-frequency module of the present invention is formed by resin molding, and at least the entire surface on one side is coated with a conductive material, so that the metal plate Compared to a configuration made by shaving, it can be manufactured simply and inexpensively, and can be significantly reduced in weight.
- the high-frequency module component and the high-frequency module component are disposed in contact with one surface of the high-frequency module component, and are guided at the contact surface with the high-frequency module component.
- the provision of the ground electrode for closing the concave portion for the tubular waveguide and the substrate on which the TEM mode line is formed in contact with the tip of the short-circuiting column allow the concave portion for the waveguide to be closed by the ground electrode.
- the TEM mode (or TE mode) electromagnetic wave By passing the TEM mode (or TE mode) electromagnetic wave through this short-circuit pole, it can be converted into a TE mode or TEM mode electromagnetic wave. At that time, the electromagnetic wave generated around the short-circuit pole can be converted. Since the magnetic field passes through the space having the same permittivity, the bias of the magnetic field density is reduced. Therefore, the TEM mode electromagnetic wave having a strong magnetic field density and the electromagnetic wave in the waveguide are magnetically coupled. Therefore, mode conversion is efficiently performed between the TE mode electromagnetic wave and the TEM mode electromagnetic wave. As a result, the insertion loss of the high-frequency module can be reduced.
- FIG. 1 is a perspective view showing a configuration of a high-frequency module according to one embodiment of the present invention.
- FIG. 2 is a perspective view of the high-frequency module component in FIG. 1 as viewed from the back side.
- FIG. 3 is an exploded perspective view showing a configuration of a high-frequency module component and a substrate.
- FIG. 4 is an explanatory diagram for explaining an operation of the high-frequency module.
- FIG. 5 is a perspective view showing a configuration of a modification of the high-frequency module.
- the high-frequency module 1 includes a high-frequency module component 2 and a substrate 3, and functions as a band-pass filter.
- the high-frequency module component 2 includes a module component main body 4, two short-circuit pillars 5, 6, and a pair of partition walls 7, 7.
- the module component main body 4 has a rectangular parallelepiped outer shape and a waveguide-type waveguide recess (hereinafter, referred to as a “waveguide 8) and two cut-off waveguide recesses 9 and 10 are formed on one surface (upper surface in FIG. 3 and lower surface in FIG. 3) 4a at the same depth, respectively.
- a waveguide-type waveguide recess hereinafter, referred to as a “waveguide 8)
- two cut-off waveguide recesses 9 and 10 are formed on one surface (upper surface in FIG. 3 and lower surface in FIG. 3) 4a at the same depth, respectively.
- the waveguide recess 8 is formed between the blocking waveguide recesses 9 and 10 so as to communicate with the blocking waveguide recesses 9 and 10, respectively.
- each of the cut-off waveguide recesses 9 and 10 is formed in contact with each of the surfaces 4b and 4c located in the longitudinal direction of the module component body 4.
- Each of the cut-off waveguide concave portions 9 and 10 is formed to have a smaller width in the direction along the surfaces 4b and 4c than the waveguide concave portion 8.
- a notch 25 is formed by cutting out a part thereof (a portion above the TEM mode line 12) in order to avoid an influence on the TEM mode electromagnetic wave passing through the TEM mode line 12. Is formed.
- the notch width L1 of the notch 25 is formed narrower than the width L2 between the ground electrodes 11 formed on both sides of the TEM mode line 12 as a coplanar line.
- a dustproof cover (not shown) made of a non-conductive material (for example, made of resin) is fitted into the notch 25.
- the short-circuiting column 5 is formed near at least one of the inner surface 8a of the waveguide recess 8 and the inner surface 9a of the blocking waveguide recess 9 near the boundary between the waveguide recess 8 and the blocking waveguide recess 9 ( At the boundary).
- the short-circuiting column 6 is provided near at least one of the inner surface 8a of the concave portion 8 for the waveguide and the inner surface 10a of the concave portion 10 for the blocking waveguide in the vicinity of the boundary between the concave portion 8 for the waveguide and the concave portion 10 for the blocking waveguide. Part).
- this high-frequency module 1 as an example, as shown in FIG.
- each short-circuiting pillar 5, 6 has a force S standing on the inner surface 9a, 10a side of each of the cut-off waveguide recesses 9, 10, respectively.
- the short-circuit pillars 5 and 6 are erected at the center of each side in the width direction of the waveguide recess 8 in contact with the blocking waveguide recesses 9 and 10.
- the pair of partition walls 7, 7 are in contact with a pair of inner wall surfaces parallel to the longitudinal direction of the module component body 4 in the waveguide recess 8, respectively, and are formed in this longitudinal direction on the inner surface 8 a of the waveguide recess 8. Each is erected at an intermediate position.
- the high-frequency module component 2 having the above-described configuration is configured such that the module component main body 4, the short-circuit columns 5, 6 and the partition walls 7, 7 are integrally formed by resin molding.
- the high-frequency module component 2 is coated with a conductive material over the entire surface on one side.
- the entire surface of 6, the entire surface of each of the partition walls 7, 7 and one surface 4a are coated with a conductive material.
- the entire surface of the high-frequency module component 2 is coated with a conductive material.In order to avoid an increase in the amount of conductive material used, only the entire surface on one side of the high-frequency module component 2 is required. Is preferably coated with a conductive material.
- the high-frequency module component 2 can be manufactured by cutting out a metal plate such as aluminum, and can be manufactured easily and inexpensively. It is preferable to manufacture with.
- the substrate 3 is formed of, for example, a glass epoxy resin material, and as shown in FIG. 3, a ground electrode 11 and a pair of TEM mode lines 12 and 13 are formed on the respective surfaces (the upper surface in FIG. 3). I have.
- the outer shape of the ground electrode 11 is defined so as to cover the entire area of the one surface 4a of the module component body 4, and each portion (each end in the longitudinal direction) corresponding to each of the cut-off waveguide recesses 9, 10 is formed.
- the central portions of the portions l ib and 11c are cut out slightly wider than the cut-off waveguide recesses 9 and 10.
- Each of the TEM mode lines 12 and 13 is sandwiched between the ground electrodes 11 remaining at both ends of each of the ends l ib and 11c in each of the cut-out portions, and each tip is formed at a central portion of the ground electrode 11. It extends to 1 la and is formed on a coplanar line.
- the total length of the TEM mode line 12 is defined so that, when the high-frequency module component 2 is mounted on the substrate 3, the tip reaches the portion where the tip end surface of the short-circuit pillar 5 is located.
- T The entire length of the EM mode line 13 is also defined so that the tip reaches the portion where the tip end surface of the short-circuit pole 6 is located.
- the high-frequency module 1 is configured by mounting the high-frequency module component 2 on the surface of the substrate 3 on which the ground electrode 11 and the TEM mode lines 12 and 13 are formed. .
- the waveguide recess 8 of the high-frequency module component 2 is closed by the central portion 11a of the ground electrode 11, and the tip surfaces (tips in the present invention) of the short-circuit posts 5 and 6 and each TEM mode The ends of the lines 12, 13 are short-circuited to each other.
- the surface of the waveguide recess 8 coated with the conductive material and the region surrounded by the ground electrode 11 are formed as cavities and serve as a waveguide type waveguide A that propagates TE mode electromagnetic waves. Function.
- the waveguide A has two regions partitioned by a pair of partition walls 7 and 7, and the region on the TEM mode line 12 side of the two regions has a hollow shape.
- a resonator 21 is formed, and a region on the TEM mode line 13 side forms a cavity-type resonator 22.
- each of the cut-off waveguide recesses 9 and 10 is formed such that the width in the lateral direction orthogonal to the extending direction of the TEM mode lines 12 and 13 is formed to be narrower than the width of the waveguide recess 8. It functions as a cut-off waveguide for electromagnetic waves propagating in waveguide A.
- the TEM-mode electromagnetic wave W1 input to the TEM mode line 12 reaches the short-circuit post 5 via the TEM mode line 12, and then the short-circuit post 5 Pass through 5.
- an annular magnetic field HI is generated around the short-circuit pole 5.
- the direction of the magnetic field HI on the E plane of the resonator 21 and the direction of the magnetic field H2 of the electromagnetic wave generated in the resonator 21 match. Therefore, the electromagnetic wave W1 in the TEM mode and the electromagnetic wave (magnetic field H2) in the resonator 21 are magnetically coupled.
- the magnetic field HI does not pass through the inside of the substrate 3 as a dielectric because the short-circuiting pillar 5 is erected on the substrate 3 (since it is raised from the substrate 3). Therefore, the magnetic field HI of the electromagnetic wave W1 generated around the short-circuiting pillar 5 passes through the space having the same dielectric constant, and the bias of the magnetic field density is reduced. Therefore, the TEM mode electromagnetic wave W1 having a strong magnetic field density and the TE mode electromagnetic wave (magnetic field H2) propagating in the resonator (waveguide waveguide) 21 are magnetically coupled. Therefore, the TEM mode power Mode conversion is efficient between the magnetic wave Wl and the TE mode electromagnetic wave (magnetic field H2).
- the short-circuiting pillar 5 is provided upright at the center of each side in the width direction of the waveguide recess 8 in contact with the cut-off waveguide recess 9, so that it propagates through the resonator 21.
- the electromagnetic wave W1 (magnetic field HI) in the TEM mode is magnetically coupled with the electromagnetic wave (magnetic field H2) in the resonator 21 in a favorable state.
- the electromagnetic wave W1 in the TEM mode is efficiently converted into the electromagnetic wave in the TE mode (magnetic field H2).
- the electromagnetic wave (magnetic field H2) in the resonator 21 is magnetically coupled with the electromagnetic wave (magnetic field H3) in the resonator 22 using the gap formed between the pair of partition walls 7, 7 as an E-plane coupling window. Accordingly, a magnetic field H3 shown in FIG.
- the direction of the magnetic field H4 of the TEM mode electromagnetic wave W2 generated in the short-circuiting pole 6 is as shown in FIG. Therefore, the direction of the magnetic field H3 of the electromagnetic wave matches the direction of the magnetic field H4 of the electromagnetic wave W2 in the TEM mode. Therefore, the electromagnetic wave (magnetic field H3) in the resonator 22 and the electromagnetic wave W2 in the TEM mode are magnetically coupled.
- the magnetic field H4 does not pass through the inside of the substrate 3 as a dielectric, because the short-circuiting pillar 6 is erected on the substrate 3 (since it rises from the substrate 3). Therefore, the magnetic field H4 of the electromagnetic wave W2 generated around the short-circuiting column 6 passes through the space having the same dielectric constant, so that the bias of the magnetic field density decreases. Therefore, the electromagnetic wave in the TE mode (magnetic field H3) propagating in the resonator (waveguide waveguide) 22 and the electromagnetic wave W2 in the TEM mode are magnetically coupled well. Therefore, mode conversion is efficiently performed between the electromagnetic wave in the TE mode (magnetic field H2) and the electromagnetic wave W2 in the TEM mode.
- the TE mode electromagnetic wave (magnetic field H3
- the electromagnetic wave in the TE mode (magnetic field H3) and the electromagnetic wave W2 in the TEM mode (magnetic field H4) are magnetically coupled at the location where the magnetic field strength of ()) is maximum. Therefore, the electromagnetic wave in the resonator 22 is magnetically coupled with the electromagnetic wave W2 in a favorable state.
- the high-frequency module 1 functions as a TEM mode input- (TE mode conversion-one TEM mode conversion-one) TEM mode output type filter.
- the conversion from the TEM mode electromagnetic wave W1 to the TE mode electromagnetic wave (magnetic field H2) is achieved.
- the magnetic fields Hl and H4 of the electromagnetic waves generated around the short-circuit poles 5 and 6 have the same dielectric constant. Since the light passes through the space, the bias of the magnetic field density is reduced.
- the electromagnetic wave W1 in the TEM mode and the electromagnetic wave in the TE mode can be satisfactorily magnetically coupled, and the electromagnetic wave in the TE mode (magnetic field H3) and the electromagnetic wave W2 in the TEM mode can be satisfactorily magnetically coupled.
- mode conversion is efficiently performed between the electromagnetic waves in the TE mode (magnetic fields HI and H2) and the electromagnetic waves Wl and W2 in the TEM mode. As a result, it is possible to configure the high-frequency module 1 with extremely small input loss.
- each of the cut-off waveguide recesses 9 and 10 is formed corresponding to each of the TEM mode lines 12 and 13, each of the waveguide-type waveguides A
- Each of the cut-off waveguide recesses 9, 10 can function as a cut-off waveguide for electromagnetic waves (magnetic fields H2, H3), thereby preventing leakage of each electromagnetic wave (magnetic fields H2, H3) to the outside. That can be S.
- the short-circuit pillars 5 and 6 are erected at the center of each side in the width direction of the waveguide recess 8 in contact with each of the cut-off waveguide recesses 9 and 10, so that the waveguide-type waveguide A is formed.
- the present invention is not limited to the configuration described above.
- the high-frequency module 1 in which the cut-off waveguide recesses 9 and 10 are provided on both sides of the waveguide recess 8 only one of the cut-off waveguide recesses 9 and 10 is provided.
- a configuration in which the concave portions 9 and 10 for blocking waveguides are not provided can be employed.
- the high-frequency module 31 shown in FIG. 5 is composed of a module component body 34 in which the waveguide recess 8 and the cut-off waveguide recess 10 are provided and the cut-off waveguide recess 9 is not provided.
- the high frequency module component 32 By using the high frequency module component 32, a cutoff waveguide is formed only on the TEM mode line 13 side.
- the short-circuiting column 5 on the TEM mode line 12 side is provided upright at the peripheral portion on the inner surface 8a of the concave portion 8 for a waveguide.
- a part of the surface 4b (the portion above the TEM mode line 12 and near the short-circuit post 5) is cut.
- a notch 35 is formed.
- the notch width L1 of the notch 35 is smaller than the width L2 between the ground patterns formed on both sides of the TEM mode line 12 as the coplanar line.
- a dust cover (not shown) made of a non-conductive material (for example, made of resin) is fitted into the notch 35.
- the same components as those of the high-frequency module 1 are denoted by the same reference numerals, and redundant description will be omitted.
- the high-frequency module 31 although the cut-off waveguide concave portion 9 is provided, the electromagnetic wave (magnetic field H2) leaks to the outside by a small amount, but the other points are the same as those of the high-frequency module 1.
- the TEM mode lines 12 and 13 can be formed by the above-described force S, microstrip line, or strip line in the case where the TEM mode lines 12 and 13 are formed by coplanar lines.
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Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2004-019712 | 2004-01-28 | ||
JP2004019712A JP2005217604A (ja) | 2004-01-28 | 2004-01-28 | 高周波モジュール用部品および高周波モジュール |
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WO2005074069A1 true WO2005074069A1 (ja) | 2005-08-11 |
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PCT/JP2005/000844 WO2005074069A1 (ja) | 2004-01-28 | 2005-01-24 | 高周波モジュール用部品および高周波モジュール |
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WO (1) | WO2005074069A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2020167708A1 (en) * | 2019-02-13 | 2020-08-20 | Knowles Cazenovia, Inc. | Radio frequency device with non-uniform width cavities |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN112902782B (zh) * | 2021-02-07 | 2023-03-31 | 深圳市启粤建筑工程有限公司 | 一种手摇式建筑工地用间距定位测量装置 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000252711A (ja) * | 1999-02-24 | 2000-09-14 | Trw Inc | 導波管/マイクロストリップ結合装置 |
JP2003078312A (ja) * | 1996-06-10 | 2003-03-14 | Murata Mfg Co Ltd | 誘電体導波管型フィルタ及びその特性調整方法 |
JP2003289204A (ja) * | 2002-03-28 | 2003-10-10 | Matsushita Electric Ind Co Ltd | 導波管フィルタ |
-
2004
- 2004-01-28 JP JP2004019712A patent/JP2005217604A/ja not_active Withdrawn
-
2005
- 2005-01-24 WO PCT/JP2005/000844 patent/WO2005074069A1/ja active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003078312A (ja) * | 1996-06-10 | 2003-03-14 | Murata Mfg Co Ltd | 誘電体導波管型フィルタ及びその特性調整方法 |
JP2000252711A (ja) * | 1999-02-24 | 2000-09-14 | Trw Inc | 導波管/マイクロストリップ結合装置 |
JP2003289204A (ja) * | 2002-03-28 | 2003-10-10 | Matsushita Electric Ind Co Ltd | 導波管フィルタ |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2020167708A1 (en) * | 2019-02-13 | 2020-08-20 | Knowles Cazenovia, Inc. | Radio frequency device with non-uniform width cavities |
US11355827B2 (en) | 2019-02-13 | 2022-06-07 | Knowles Cazenovia, Inc. | Radio frequency device with non-uniform width cavities |
US11811122B2 (en) | 2019-02-13 | 2023-11-07 | Knowles Cazenovia, Inc. | Radio frequency device with non-uniform width cavities |
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