CN1291520C - Stacked dielectric resonator and stacked dielectric filter - Google Patents
Stacked dielectric resonator and stacked dielectric filter Download PDFInfo
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- CN1291520C CN1291520C CN 02149508 CN02149508A CN1291520C CN 1291520 C CN1291520 C CN 1291520C CN 02149508 CN02149508 CN 02149508 CN 02149508 A CN02149508 A CN 02149508A CN 1291520 C CN1291520 C CN 1291520C
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- 239000000758 substrate Substances 0.000 claims description 68
- 239000010410 layer Substances 0.000 claims description 26
- 230000008878 coupling Effects 0.000 claims description 14
- 238000010168 coupling process Methods 0.000 claims description 14
- 238000005859 coupling reaction Methods 0.000 claims description 14
- 239000011229 interlayer Substances 0.000 claims description 11
- 238000003475 lamination Methods 0.000 claims description 6
- 230000001105 regulatory effect Effects 0.000 claims description 6
- 238000000354 decomposition reaction Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 238000007634 remodeling Methods 0.000 description 5
- 238000004891 communication Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000005476 size effect Effects 0.000 description 1
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Abstract
A resonance electrode 16 is formed on a plane approximately at a middle height in a dielectric board (e.g. a main plane of a fifth dielectric layer S5) and has a short-circuited end 18 connected at one end to a ground electrode 12a formed on one side of the board, a first open end 20 formed on a plane in the board (e.g. one main plane of a second dielectric layer S2) near a ground electrode 12a formed on the upside of the board, and a second open end 22 formed on a plane in the board (e.g. one main plane of an eighth dielectric layer S8) near a ground electrode 12b formed on the downside of the dielectric board.
Description
Technical field
The present invention relates to be formed in the laminated dielectric resonator device and the filter in laminated medium of the resonant circuit that hundreds of MHz uses to the microwave frequency range of several GHz, particularly can have the inequality that reduces or the laminated dielectric resonator device and the filter in laminated medium of variation by the manufacturing of small size high productivity.
Background technology
The development trend that improves along with the function such as wireless communication systems such as cell phone systems more requires to have the filter in laminated medium that size is littler and loss is littler in recent years.
The size that reduces filter in laminated medium just must reduce the size of dielectric substrate.
The size that reduces dielectric substrate can cause the length of the resonance electrode that forms in the dielectric substrate not enough.Therefore propose the resonance electrode that forms in the dielectric substrate is divided into two sections, and via through holes makes two sections resonance electrodes interconnection, make folding resonance electrode structure thus.For example, the open 11-191702 of visible Japan special permission, 10-126103, and 10-190308.
But, because be starved of the littler R﹠D work that filter in laminated medium carried out of size.Thereby, only fold resonance electrode to reduce the size effect of filter in laminated medium limited with installing.
Summary of the invention
The objective of the invention is by laminated dielectric resonator device and the filter in laminated medium that folding resonance electrode structure provides size further to reduce is installed.
According to a first aspect of the invention, provide a kind of laminated dielectric resonator device, comprising: dielectric substrate comprises the lamination of multilayer dielectricity layer; First grounding electrode, it is arranged on the upper surface of described dielectric substrate; Second grounding electrode, it is arranged on the side surface of described dielectric substrate; The 3rd grounding electrode, it is arranged among the described dielectric substrate, and described the 3rd grounding electrode is connected with described second grounding electrode; With at least one resonance electrode, it is arranged between described first grounding electrode and described the 3rd grounding electrode in the described dielectric substrate; Described resonance electrode, has the short-circuit end element that is connected to second grounding electrode, be arranged on the 1st openend element of facing the upper surface of described dielectric substrate in the described dielectric substrate, be arranged on the 2nd openend element of facing described the 3rd grounding electrode in the described dielectric substrate.
According to a second aspect of the invention, provide a kind of filter in laminated medium, comprising: dielectric substrate comprises the lamination of multilayer dielectricity layer; First grounding electrode, it is arranged on the upper surface and side surface of described dielectric substrate; Second grounding electrode, it is arranged on the side surface of described dielectric substrate; The 3rd grounding electrode, it is arranged among the described dielectric substrate, and described the 3rd grounding electrode is connected with described second grounding electrode; At least two resonators are between its described first grounding electrode and described the 3rd grounding electrode in described dielectric substrate; Each described resonator has at least one resonance electrode; Described resonance electrode has the short-circuit end element that is connected to described second grounding electrode, be arranged on the 1st openend element of the upper surface of facing described dielectric substrate in the described dielectric substrate and be arranged on the 2nd openend element of facing described the 3rd grounding electrode in the described dielectric substrate.
Because the 1st and the 2nd openend element is faced the upper surface and the lower surface of dielectric substrate respectively, so, form electrostatic capacitance respectively between the 1st openend element and the last grounding electrode and between the 2nd openend element and the following grounding electrode.Therefore increase the electrostatic capacitance between the openend of grounding electrode and resonance electrode, reduced the resonance frequency of laminated dielectric resonator device.
Therefore, even for the requirement of the littler filter in laminated medium of the laminated dielectric resonator device that satisfies smaller szie and size and when reducing the size of dielectric substrate, also can increase the capacity of laminated dielectric resonator device, and reduce resonance frequency.
The end member of short circuit, the 1st openend element and the 2nd openend element can be electrically connected through via hole.The the 1st and the 2nd openend element has the openend that is located in the dielectric substrate respectively and faces its side surface, and therefore folding resonance electrode structure is provided.
The width of at least one element in the 1st and the 2nd openend element can be greater than the width of short-circuit end element.With this configuration, can further increase the openend of resonance electrode and the electrostatic capacitance between the grounding electrode, therefore can further reduce resonance frequency.
The laminated dielectric resonator device also can comprise and being arranged in the dielectric substrate in the face of at least one interlayer grounding electrode in the 1st and the 2nd open end element.The interlayer grounding electrode that increases is used to increase the electrostatic capacitance between resonance electrode openend and the grounding electrode, thereby further reduces resonance frequency.
If comprising by multilayer dielectricity is stacked, the short-circuit end element puts the multi-ribbon shape line that is provided with at regular intervals on the direction, because resonator has a plurality of resonance electrodes in fact, so its quiescent value Q has increased.
By the present invention, filter in laminated medium has, the dielectric substrate that comprises a plurality of dielectric layer laminations, be arranged on the lip-deep grounding electrode of dielectric substrate, with at least two resonators that are arranged on the dielectric substrate, each resonator has at least one resonance electrode, resonance electrode has the short-circuit end element that is connected to the grounding electrode of being located on the dielectric substrate side, be arranged in the face of the 1st openend element in the dielectric substrate of dielectric substrate upper surface and be arranged in the face of the 2nd openend element in the dielectric substrate of dielectric substrate lower surface.
Use above-mentioned configuration,, also can increase the capacity of resonator and reduce its resonance frequency even when reducing the dielectric substrate size for the requirement of satisfying the littler filter in laminated medium of littler laminated dielectric resonator device of size and size.Therefore can reduce the size of filter in laminated medium.
Filter in laminated medium also has at least one coupling to regulate electrode, is used to regulate two couplings between the resonator.Therefore electrode is regulated in coupling can, can increase the coupling capacitance of filter in laminated medium in the face of at least one element in the 1st and the 2nd openend element.
By the following description of doing referring to the way of example of the accompanying drawing that the embodiment of the invention is shown, above-mentioned goal of the invention with other of the present invention, it is clearer that feature and advantage will become.
Description of drawings
Fig. 1 is the vertical sectional view by the laminated dielectric resonator device of the present invention the 1st embodiment;
Fig. 2 is the decomposition diagram by the laminated dielectric resonator device of the present invention the 1st embodiment;
Fig. 3 is the decomposition diagram by the laminated dielectric resonator device of the present invention the 2nd embodiment;
Fig. 4 is the vertical sectional view by the laminated dielectric resonator device of the present invention the 3rd embodiment;
Fig. 5 is the decomposition diagram by the laminated dielectric resonator device of the present invention the 3rd embodiment;
Fig. 6 is the vertical sectional view by the laminated dielectric resonator device of the present invention the 4th embodiment;
Fig. 7 is the decomposition diagram by the laminated dielectric resonator device of the present invention the 4th embodiment;
Fig. 8 is the decomposition diagram by the filter in laminated medium of the embodiment of the invention;
Fig. 9 is the decomposition diagram of the filter in laminated medium of remodeling.
Embodiment
Identical or corresponding part is indicated with identical or corresponding reference symbol in the accompanying drawing.
Fig. 1 and 2 illustrates the laminated dielectric resonator device 10A by the present invention the 1st embodiment.As illustrated in fig. 1 and 2, laminated dielectric resonator device 10A has dielectric substrate 14, comprising: the multilayer dielectricity layer, i.e. and the 1st to the 9th dielectric layer S1 to S9, it is stacked and sinter an integral body into; Be installed in a plurality of grounding electrode 12a, 12b, the 12c on each surface of dielectric substrate 14.The first type surface that is not located at as the grounding electrode 12b of bottom electrode on the lower surface of dielectric substrate 14 and is arranged on the 9th dielectric layer S9 is on the upper surface.
Among Fig. 2, the 1st to the 9th dielectric layer S1 to S9 order stack is set to dielectric substrate 14.Just the 1st to the 9th dielectric layer S1 to S9 is shown for example, laminated dielectric resonator device 10A can have dielectric layer more or less.Each dielectric layer among the 1st to the 9th dielectric layer S1 to S9 can be a single or multiple lift.
Laminated dielectric resonator device 10A is arranged on the resonance electrode 16 in the dielectric substrate 14 in addition.
Being electrically connected mutually through via hole 24 of short-circuit end element 18 away from an end of its short-circuit end and an end of the 1st openend element 20.The same end of short-circuit end element 18 also is electrically connected through via hole 24 mutually with an end of the 2nd openend element 22.
The the 1st and the 2nd openend element 20,22 is arranged in the dielectric substrate 14, make them separate each other from the other end far away with the 1st end distance that is connected with the 2nd openend element 20,22 with them separately, and in the face of the grounding electrode 12c on the side surface of dielectric substrate 14.Therefore, resonance electrode 16 is bifurcated into two sections.Two sections resonance electrodes extend towards grounding electrode 12c.
Because short-circuit end element 18 is positioned at the vertical center of dielectric substrate 14, open end element 20,22 is provided with near the upper and lower surface of dielectric substrate 14 respectively, between the 1st openend element 20 and last grounding electrode 12a, form electrostatic capacitance C1, form electrostatic capacitance C2 between the 2nd openend element 22 and the following grounding electrode 12b.Thereby increased electrostatic capacitance between the openend of grounding electrode 12 and resonance electrode 16, reduced the resonance frequency of laminated dielectric resonator device 10A.
Therefore, though for the requirement of satisfying the littler filter in laminated medium of littler laminated dielectric resonator device of size and size has reduced the size of dielectric substrate 14, also can increase the capacity of laminated dielectric resonator device 10A and reduce its resonance frequency.
Below referring to Fig. 3 laminated dielectric resonator device 10B by the present invention the 2nd embodiment is described.
As shown in Figure 3, laminated dielectric resonator device 10B roughly is similar to the laminated dielectric resonator device 10A by the 1st embodiment.Difference between them is, separately width W 1 of the 1st and the 2nd openend element 20,22, W2 are greater than the width W 3 of short-circuit end element 18.
The structure of laminated dielectric resonator device 10B can effectively increase the openend of resonance electrode 16 and the electrostatic capacitance between the grounding electrode 12, therefore, can reduce the resonance frequency of laminated dielectric resonator device 10B.
Below referring to Figure 4 and 5 laminated dielectric resonator device 10c by the present invention the 3rd embodiment is described.
Shown in Figure 4 and 5, laminated dielectric resonator device 10c causes identical with laminated dielectric resonator device 10A by the 1st embodiment mutually, difference between them is that it also comprises: the 1st interlayer grounding electrode 30, and it is arranged among the 3rd dielectric layer S3 and faces the 1st openend element 20; With the 2nd interlayer grounding electrode 32, it is arranged on the first type surface of the 7th dielectric layer S7 and in the face of the 2nd openend element 22.
Structure with laminated dielectric resonator device 10C, the electrostatic capacitance that forms between the 1st openend element 20 and the 1st interlayer grounding electrode 30 is added on the electrostatic capacitance that forms between the 1st openend element 20 and the last grounding electrode 12a, and the electrostatic capacitance that forms between the 2nd openend element 22 and the 2nd interlayer grounding electrode 32 is added on the electrostatic capacitance that forms between the 2nd openend element 22 and the following grounding electrode 12b.Therefore, can further increase the electrostatic capacitance that forms between the openend of resonance electrode 16 and the grounding electrode 12.
The openend 20a of the 1st and the 2nd openend element 20,22,22a are positioned at the position of specific surface to the more close grounding electrode 12c in end of the 1st and the 2nd interlayer grounding electrode 30,32 of grounding electrode 12c.Therefore, even these electrodes move in their lamination, the 1st openend element 20 and the 1st interlayer grounding electrode 30 areas respect to one another and the 2nd openend element 22 and the 2nd interlayer grounding electrode 32 areas respect to one another are constant.Therefore, any variation of the characteristic of laminated dielectric resonator device 10c is all minimum.
Below referring to Fig. 6 and 7 laminated dielectric resonator device 10D by the present invention the 4th embodiment are described.
Shown in Fig. 6 and 7, laminated dielectric resonator device 10D is roughly the same with the laminated dielectric resonator device 10A by the 1st embodiment.Difference between them is that the short-circuit end element comprises a plurality of strip lines, i.e. the 1st to the 3rd strip line 18a, 18b, the 18c that is spaced apart at regular intervals by the stacked direction of dielectric layer.
As shown in Figure 7, the 1st strip line 18a is arranged on the first type surface of the 4th dielectric layer S4, and the 2nd strip line 18b is arranged on the first type surface of the 5th dielectric layer S5, and the 3rd strip line 18c is arranged on the first type surface of the 6th dielectric layer S6.1st, the 2nd, the 3rd strip line 18a, 18b, 18c have the end away from grounding electrode 12c respectively, and they are electrically connected mutually through via hole 24.
Usually, the quiescent value Q of resonator of a plurality of resonance electrodes is arranged greater than the quiescent value of resonator with single resonance electrode.
Because in fact laminated dielectric resonator device 10D has a plurality of resonance electrodes, so its quiescent value Q increases.
Below with reference to the double structure filter in laminated medium 100 on the principle basis of Fig. 8 description laminated dielectric resonator device 10A of the 1st embodiment according to the present invention.
As shown in Figure 8, filter in laminated medium 100 has the 1st resonance electrode 16A that the 1st resonator is provided and the 2nd resonance electrode 16B that the 2nd resonator is provided.With reference number indication each electrode relevant of subscripting A, with reference number indication each electrode relevant of subscripting B with the 2nd resonance electrode 16B with the 1st resonance electrode 16A.No longer be repeated in this description these electrodes.
Filter in laminated medium 100 has following feature: short-circuit end element 18A has the lead-in wire electrode 40 that is connected to the input (not shown), and another short-circuit end element 18B has the lead-in wire electrode 42 that is connected to the output (not shown).
The coupling that is used to regulate the coupling between resonance electrode 16A, the 16B is regulated electrode 44 and is arranged on first type surface near the 4th dielectric layer S4 of short-circuit end element 18A, 18B.
Because double structure filter in laminated medium 100 is based on the principle by the laminated dielectric resonator device 10A of the 1st embodiment, so, even reduce the size of dielectric substrate 14 for the requirement of satisfying the littler filter in laminated medium of littler laminated dielectric resonator device of size and size, also can increase the capacity of resonator and reduce resonance frequency.Therefore, can reduce the size of filter in laminated medium 100.
Below referring to Fig. 9 the filter in laminated medium 100a of remodeling is described.
As shown in Figure 9, the filter in laminated medium 100a of remodeling and filter in laminated medium 100 are roughly the same.But, the filter in laminated medium 100a of remodeling and the difference of filter in laminated medium 100 are, the first type surface that electrode 44 is arranged on the 3rd dielectric layer S3 that is provided with near the 1st openend element 20A, 20B is regulated in the 1st coupling that is used to regulate the coupling between resonance electrode 16A, the 16B, and the first type surface that electrode 46 is arranged on the 7th dielectric layer S7 that is provided with near the 2nd openend element 22A, 22B is regulated in the 2nd coupling that is used to regulate the coupling between resonance electrode 16A, the 16B.
Because coupling is regulated electrode 44,46 and is located near the 1st and the 2nd openend element 20A, 20B and 22A, 22B place, so can increase the coupling capacitance of the filter in laminated medium 100a that retrofits.
Although showed and described some preferred embodiment of the present invention in detail, should be appreciated that, under the situation that does not break away from the scope of the invention that appended claims defines, also can make various variations and remodeling.
Claims (8)
1, a kind of laminated dielectric resonator device comprises:
Dielectric substrate (14) comprises the lamination of multilayer dielectricity layer;
First grounding electrode (12a), it is arranged on the upper surface of described dielectric substrate (14);
Second grounding electrode (12c), it is arranged on the side surface of described dielectric substrate (14);
The 3rd grounding electrode (12b), it is arranged among the described dielectric substrate (14), and described the 3rd grounding electrode (12b) is connected with described second grounding electrode (12c); With
At least one resonance electrode (16), it is arranged between described first grounding electrode (12a) and described the 3rd grounding electrode (12b) in the described dielectric substrate (14);
Described resonance electrode (16), has the short-circuit end element (18) that is connected to second grounding electrode (12c), be arranged on the 1st openend element (20) of facing the upper surface of described dielectric substrate (14) in the described dielectric substrate (14), be arranged on the 2nd openend element (22) of facing described the 3rd grounding electrode (12b) in the described dielectric substrate (14).
2, according to the laminated dielectric resonator device of claim 1, wherein, described short-circuit end element (18), described the 1st openend element (20) and the 2nd openend element (22) are electrically connected mutually through via hole (24).
3, according to the laminated dielectric resonator device of claim 1, wherein, described the 1st openend element (20) and the 2nd openend element (22) have the openend that is arranged in the described dielectric substrate (14) and faces the side surface of described dielectric substrate respectively.
4, according to the laminated dielectric resonator device of claim 1, wherein, (W1, W2) at least one width in is greater than the width (W3) of described short-circuit end element (18) for the width of described the 1st openend element (20) and the 2nd openend element (22).
5, according to the laminated dielectric resonator device of claim 1, also comprise;
Interlayer grounding electrode (30,32), they are arranged in the described dielectric substrate (14), in the face of in the described the 1st and the 2nd openend element (20) and (22) at least one, described interlayer grounding electrode (30,32) is connected with described grounding electrode (12c) on being arranged on described side surface.
6, according to the laminated dielectric resonator device of claim 1, wherein, described short-circuit end element (18) comprises a plurality of strip lines (18a to 18c), and they are spaced apart at certain intervals by the stacked direction of described dielectric layer.
7, a kind of filter in laminated medium comprises:
Dielectric substrate (14) comprises the lamination of multilayer dielectricity layer;
First grounding electrode (12a), it is arranged on the upper surface and side surface of described dielectric substrate (14);
Second grounding electrode (12c), it is arranged on the side surface of described dielectric substrate (14);
The 3rd grounding electrode (12b), it is arranged among the described dielectric substrate (14), and described the 3rd grounding electrode (12b) is connected with described second grounding electrode (12c); With
At least two resonators, it is arranged between described first grounding electrode (12a) and described the 3rd grounding electrode (12b) of described dielectric substrate (14);
Each described resonator has at least one resonance electrode (16A, 16B);
Described resonance electrode (16A, 16B) has the short-circuit end element (18A, 18B) that is connected to described second grounding electrode (12c), be arranged on the 1st openend element (20A, 20B) of the upper surface of facing described dielectric substrate (14) in the described dielectric substrate (14) and be arranged on the 2nd openend element (22A, 22B) of facing described the 3rd grounding electrode (12b) in the described dielectric substrate (14).
8, according to the filter in laminated medium of claim 7, also comprise:
Be used to regulate at least one coupling that is coupled between described two resonators and regulate electrode (44);
Described coupling is regulated electrode (44) and is located near at least one the element place in described the 1st openend element (20A, 20B) and the second openend element (22A, 22B).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001309174A JP2003115709A (en) | 2001-10-04 | 2001-10-04 | Laminated dielectric resonator and laminated dielectric filter |
| JP309174/2001 | 2001-10-04 | ||
| JP309174/01 | 2001-10-04 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1411097A CN1411097A (en) | 2003-04-16 |
| CN1291520C true CN1291520C (en) | 2006-12-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02149508 Expired - Fee Related CN1291520C (en) | 2001-10-04 | 2002-10-03 | Stacked dielectric resonator and stacked dielectric filter |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2003115709A (en) |
| CN (1) | CN1291520C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5745322B2 (en) * | 2010-06-29 | 2015-07-08 | 株式会社Ｎｔｔドコモ | Multi-band resonator and multi-band pass filter |
-
2001
- 2001-10-04 JP JP2001309174A patent/JP2003115709A/en active Pending
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2002
- 2002-10-03 CN CN 02149508 patent/CN1291520C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1411097A (en) | 2003-04-16 |
| JP2003115709A (en) | 2003-04-18 |
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Granted publication date: 20061220 Termination date: 20191003 |