JPH1098315A - Dielectric laminated device, its manufacture and mobile communication equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the reliability of the mounting of a dielectric laminated device and to improve the non-load Q of a dielectric laminated resonator. SOLUTION: This device is provided with a dielectric including a low- temperature sintered material, a strip line 49 buried into the dielectric, an input/ output electrode 42 connected to the line 49, exposed to a surface along the line direction of the line 49 among the outer surface of the dielectric and formed along the layer direction of the laminated structure of the dielectric, a first shield electrode 44 formed on the top surface of the dielectric, a side surface shield electrode 48 and a ground electrode 46 formed on a side surface.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dielectric laminated device mainly used for high-frequency radio equipment such as a cellular phone, a method of manufacturing the same, and a mobile communication device.

[0002]

2. Description of the Related Art In recent years, with the development of mobile communication, there has been a strong demand for a small portable telephone which is convenient to carry. In particular, a dielectric filter using a dielectric laminated resonator is one of the most important components among high-frequency components used in a wireless circuit of a mobile phone, and therefore, a small size and high performance are strongly required.

An example of the above-described conventional dielectric laminated resonator will be described below with reference to the drawings. FIG. 41 is an exploded perspective view of a conventional dielectric laminated resonator. FIG. 42 is a cross-sectional view of a plane including line XX ′ in FIG. FIG. 43 is a sectional view of a plane including a line YY ′ in FIG.

In FIG. 41, FIG. 42, and FIG. 43, a strip line 202 is formed on a first dielectric sheet 201, and shield electrodes are respectively provided via dielectric sheets 201 and 203 stacked on and under the strip line 202. 204
Is provided. One end of the strip line 202 is connected to the ground electrode 20.
By grounding via 5, a short-circuited stripline resonator at the tip is formed. At the frequency where the length of the strip line becomes a quarter wavelength, the impedance at the open end becomes infinite and parallel resonance occurs. A dielectric laminated resonator having such a structure is shown in, for example, FIG. 1 disclosed in Japanese Patent Application Laid-Open No. 2-290303.

[0005]

However, in the above-described conventional structure, the thickness and thickness of the resonator can be reduced, but the strip line is formed by screen printing, so that the line thickness is formed to 20 μm or more. It is difficult to form the strip line on the dielectric sheet, and a convex portion is generated. The edge has been crushed, and the line thickness at the side of the strip line has been reduced. Therefore, since the high frequency current is concentrated on the side of the strip line,
There has been a problem that the conductor loss of the strip line increases and the no-load Q decreases. In addition, a separate step of attaching input / output electrodes for connecting the strip line to an external circuit is required.

SUMMARY OF THE INVENTION The present invention provides a dielectric laminated device capable of improving the reliability of mounting of the dielectric laminated device without substantially treating the input / output electrodes as separate components, a method of manufacturing the same, and a mobile communication device using the same. The purpose is to provide.
Another object of the present invention is to provide a small-sized and low-cost dielectric laminated device, a method of manufacturing the same, and a mobile communication device using the same while maintaining good performance of the dielectric laminated device.

[0007]

According to a first aspect of the present invention, there is provided a dielectric member including a low-temperature sintering material, a strip line embedded in the dielectric member, and connected to the strip line. A dielectric laminated device including an input / output electrode exposed on a surface along a line direction of the strip line among outer surfaces of the dielectric member.

According to a fourth aspect of the present invention, there is provided a dielectric member including a low-temperature sintering material, and a strip line embedded in the dielectric member, wherein the thickness or width of the strip line is less than that of the strip line. This is a dielectric laminated device that changes with reference to the line direction.

According to a fifth aspect of the present invention, there is provided a dielectric member including a low-temperature sintering material, a plurality of striplines embedded in the dielectric member, and the one or other side of the plurality of striplines. A coupling electrode embedded in a dielectric member; and an input / output coupling electrode embedded in the dielectric member on one or the other side of the plurality of strip lines, wherein the thickness of the strip line is reduced by the coupling electrode and the input electrode. It is a dielectric laminated device larger than each thickness of the output coupling electrode.

[0010] According to a seventh aspect of the present invention, there is provided a dielectric member in which a plurality of dielectric sheets are stacked, a shield electrode disposed on an outer surface of the dielectric member, and one of the plurality of dielectric sheets. A strip line formed of an electrode material and embedded in the inside of the dielectric sheet of the portion, connected to the strip line, and an outer surface of the dielectric member,
A dielectric laminated device including an input / output electrode exposed on a surface of the strip line along a line direction.

According to a ninth aspect of the present invention, there is provided a dielectric member in which a plurality of dielectric sheets including first, second, and third dielectric sheets are laminated, and the dielectric member is disposed on an outer surface of the dielectric member. A shield electrode, a first strip line formed of an electrode material, embedded in the first dielectric sheet, and the second strip line laminated on one surface of the first dielectric sheet. A second strip line formed of the electrode material, embedded in a dielectric sheet;
A third strip line formed of the electrode material and embedded in the third dielectric sheet laminated on the other surface of the first dielectric sheet; The surface of the third strip line is in contact with the surface of the first strip line along the line direction of the first strip line, and the length of each of the second and third strip lines is One end of the first strip line is shorter than the length of the first strip line,
A dielectric is electrically open together with one end of the second and third strip lines, and the other end of the first strip line is electrically connected to a ground electrode disposed on an outer surface of the dielectric member. It is a body laminated device.

According to the present invention, there is provided a first dielectric sheet having a plurality of openings, a plurality of strip lines formed by embedding electrodes in the plurality of openings, and the first dielectric sheet. A second dielectric sheet laminated on one side of the sheet, a third dielectric sheet laminated on the other side of the first dielectric sheet, and an inner layer on the second dielectric sheet; A coupling electrode for forming a coupling capacitance between the plurality of strip lines, and an input / output coupling for forming an input / output capacitance between the plurality of strip lines, which is formed on the third dielectric sheet. An electrode, a first shield electrode provided on an upper surface of the second dielectric sheet, and a second shield electrode provided on a lower surface of the third dielectric sheet; Is connected to the ground electrode The other end of the plurality of strip lines are open, said first to third dielectric sheet is a dielectric multilayer filter that has been integrally sintered with the same ceramic material.

According to a nineteenth aspect of the present invention, there is provided an embedding space forming step of forming an embedding space for embedding a conductive member in a dielectric sheet, and embedding the conductive member in the embedding space to form a strip line. An embedding step of forming input / output electrodes to be connected to the strip line, and forming a laminate by laminating one or more other dielectric sheets on the dielectric sheet on which the strip line and the input / output electrodes are formed. A method of manufacturing a dielectric laminated device, comprising: laminating the input / output electrodes along a line direction of the strip line on an outer surface of the dielectric laminated device manufactured based on the three steps. This is a method of manufacturing a dielectric laminated device manufactured so as to be exposed on the side of the substrate.

According to a twenty-first aspect of the present invention, there is provided an embedding space forming step of forming an embedding space for embedding a conductive member in a plurality of dielectric sheets, and one of the plurality of dielectric sheets. A strip line forming step of forming a strip line by embedding a conductive member in the embedding space of the body sheet; and, among the plurality of dielectric sheets,
An input / output electrode forming step of forming an input / output electrode by embedding a conductive member in the embedding space of another dielectric sheet,
In order to connect the input / output electrode and the strip line, a dielectric sheet in which the conductive member is embedded is laminated, and one or more other dielectric sheets are laminated on the laminated dielectric sheet. A lamination step of forming a laminated body by exposing the input / output electrodes to a surface of the outer surface of the laminated body along a line direction of the strip line, among the outer surfaces of the laminated body. This is a method for manufacturing a dielectric laminated device manufactured in the same manner.

According to a twenty-third aspect of the present invention, there is provided an embedding space forming step of forming an embedding space for embedding a conductive member in a dielectric sheet, and embedding the conductive member in the embedding space to form a strip line. A method of manufacturing a dielectric laminated device, comprising: an embedding step of forming; and a laminating step of laminating a plurality of dielectric sheets on which the stripline is formed and another dielectric sheet to form a laminate. A method of manufacturing a dielectric laminated device in which, among strip lines embedded in each layer of the plurality of dielectric sheets, a line length of one strip line is longer than a line length of another strip line.

According to a twenty-fifth aspect of the present invention, there is provided a mobile communication apparatus using any one of the above-described dielectric laminate devices.

According to a twenty-sixth aspect of the present invention, there is provided a mobile communication apparatus using a dielectric laminate device manufactured by any one of the above-described methods for manufacturing a dielectric laminate device.

According to the above arrangement, for example, by providing a strip line and an input / output electrode by burying an electrode in the opening of the dielectric sheet, a small-sized and reliable A high dielectric laminate device, a method of manufacturing the same, and a mobile communication device using the same can be realized.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. (Embodiment 1) FIG. 1 is a perspective view of a dielectric laminated resonator according to an embodiment of the dielectric laminated device of the present invention. FIG. 2 is an exploded perspective view of the dielectric laminated resonator shown in FIG. FIG. 3 is a cross-sectional view of a plane including line XX ′ in the dielectric laminated resonator of FIG. or,
FIGS. 32 to 34 are schematic views showing the steps of manufacturing the dielectric laminated resonator of the present embodiment.

Here, first, an outline of a manufacturing process of the dielectric laminated resonator according to the present embodiment will be described with reference to FIGS. 32 to 34, and then the dielectric laminated resonator will be described in detail. The configuration of the resonator will be described at the same time.

That is, as shown in FIG. 32, the dielectric sheet 401 has a plurality of openings 404 punched by a puncher or a punching die.

The dielectric sheet 401 is laminated with a dielectric sheet 403 disposed below, and a strip line 405 is formed by embedding an electrode material such as a silver paste or a metal plate in the opening 404, and then further forming a dielectric sheet. It is laminated with a dielectric sheet 402 arranged above 401.

Thereafter, as shown in FIG. 33, the laminated body 410 formed by laminating the respective dielectric sheets 401, 402, 403 is pressed. Then, the laminate 41
0 is cut as shown in FIG. 34 into six cut pieces 411 of the same shape. That is, in this cutting step, the laminated body 410 is cut such that the end face or the cross section of the strip line 405 is exposed on the side face of each cutting piece 411. It should be noted that the dotted line shown in FIG.

Further, in the firing step, the cut pieces 411 are fired at 960 ° C. or less, which is the melting point of silver, and after firing, the external electrodes are baked.

Next, the laminated dielectric resonator manufactured by the above-described manufacturing process will be described in more detail with reference to FIGS. 1 to 3, focusing on the manufacturing process after the cutting process. The configuration of the dielectric laminated resonator will also be described.

In FIGS. 1, 2 and 3, reference numeral 1 denotes a first dielectric sheet, 2 denotes a second dielectric sheet, and 3 denotes a third dielectric sheet. These dielectric sheets have a thickness of 40 μm.
A low-temperature sintered dielectric ceramic formed into a green sheet having the above thickness is used.

Openings (ie, punched holes) 4 are formed in the first dielectric sheet 1. This opening 4
Is a rectangular parallelepiped space punched by a puncher or a punching die. The opening 4 is formed so as to extend from one side surface of the first dielectric sheet 1 to another side surface facing the first dielectric sheet 1, and both end surfaces (that is, cross sections) are formed in the center of the one side surface and the other side surface. It is formed so as to be arranged.

The second dielectric sheet 2 and the third dielectric sheet 3 are formed with the same thickness.

The first dielectric sheet 1 is laminated with the third dielectric sheet 3 disposed below, and a rectangular parallelepiped strip line 5 is formed by embedding an electrode material such as a silver paste or a metal plate in the opening 4. , First dielectric sheet 1
Is laminated with the second dielectric sheet 2 disposed above.

Further, a laminated body obtained by laminating the dielectric sheets 1, 2, and 3 (corresponding to the cut piece 411 shown in FIG. 34)
Is fired simultaneously with the strip line 5, which is the internal electrode, at 960 ° C. or less, which is the melting point of silver, as described in the firing step.

Hereinafter, the steps of forming the external electrodes and the like will be described in detail with reference to FIGS.

That is, the first shield electrode 6 is made of an electrode material such as silver paste on the entire upper surface of the laminated body fired as described above, that is, on the entire upper surface of the second dielectric sheet 2. It is formed as an external electrode by means such as screen printing.

Also, the entire lower surface of the fired laminate,
That is, the second shield electrode 7 is formed as an external electrode on the entire lower surface of the third dielectric sheet 3 by the same means as the first shield electrode 6.

Further, in the fired laminate, a ground electrode 8 is formed as an external electrode on one side surface orthogonal to the line length direction of the strip line 5 by the same means as the first shield electrode 6. Side electrodes 9 and 10 are formed as strip electrodes on both side surfaces orthogonal to the width direction of the first shield electrode 6 in the same manner as the first shield electrode 6.

In addition, one end of the strip line 5 is connected to the ground electrode 8, the other end is used as an input / output electrode, and the first shield electrode 6 and the second shield electrode 7 are connected to the ground electrode 8 And side electrodes 9 and 10.

Next, the operation of the dielectric laminated resonator manufactured and configured as described above will be described.

The one end of the strip line 5 is grounded via the ground electrode 8 to form a short-circuited strip line resonator at the tip. At the frequency at which the length of the strip line becomes a quarter wavelength, the impedance at the other end (open end) of the strip line becomes infinite and parallel resonance occurs.

The dielectric laminated resonator having such a structure and a manufacturing process is disclosed in, for example, FIG. 4 disclosed in Japanese Patent Application Laid-Open No. 5-315183, FIG. 3 disclosed in Japanese Patent Application Laid-Open No. 7-66078, and FIG. FIG. 1 and the like disclosed in Japanese Patent Application Laid-Open No. 9-8514.

However, according to the present embodiment, by embedding the electrode in the opening 4 of the dielectric sheet to form the rectangular parallelepiped strip line 5, it is possible to increase the line thickness of the strip line to about 1 mm. In addition, the thickness of the line can be made thicker than that formed by screen printing or the like, and the line can be made thicker with fewer manufacturing steps, so that the shape and dimensions of the strip line can be formed with higher precision. Also, no protrusions are formed on the dielectric sheet due to the formation of the strip line, that is, since the surface of the dielectric sheet can be flattened, the side edges of the strip line generated by pressing the laminated body are formed. Can be eliminated. Furthermore, the second dielectric sheet 2 and the third dielectric sheet 3 are formed with the same thickness, and the line cross section is located at the center of the first dielectric sheet 1, so that the strip line 5 is located at the center of the resonator. Can be located. Therefore, since the high-frequency current can be made to flow substantially uniformly on the side surface of the strip line 5, the deterioration of the no-load Q of the dielectric laminated resonator due to the conductor loss of the strip line can be further reduced. A high performance dielectric laminated resonator can be provided.

FIG. 20 shows an example of a simulation result of the dielectric laminated resonator according to the present embodiment. In the laminated dielectric resonator shown in FIG. 1, for example, Bi ₂ O ₃ —Ca
O-Nd ₂ O ₅ dielectric material (dielectric constant Er = 58, material Q = 2000) is used, silver paste (conductor resistance R = 5.2 μΩ / cm) is used for the electrode, and dielectric laminate resonance is used. The change of the no-load Q when the width B of the container is set to 2 mm, the height H is 2 mm, the length L is 5 mm, the line width W of the strip line 5 is 0.5 mm, and the line thickness T is changed. 221
Shown in

In FIG. 20, when the strip line is formed by screen printing, the line thickness is about 15 μm, and the unloaded Q by simulation is 141. However, the side edge of the strip line is flattened and the unloaded Q
= 120. On the other hand, according to the present embodiment, the collapse of the side edges of the strip line can be eliminated, so that the thicker line thickness T improves the no-load Q almost as in the simulation, and the line thickness T = 0. .5
mm, the no-load Q = 201, and it can be confirmed that the no-load Q can be improved by about 50% or more.

Further, the first shield electrode 6 and the second shield electrode 7 are connected to each other by a ground electrode 8 and a side electrode 9,
By connecting via the first 10, the first shield electrode 6 and the second shield electrode 7 can be kept at the same potential. Therefore, neither the first nor the second shield electrode 6, 7 self-resonates. (Embodiment 2) Hereinafter, a second embodiment of the present invention will be described with reference to the drawings.

FIG. 4 is a perspective view of a dielectric laminated resonator in one embodiment of the dielectric laminated device of the present invention. FIG. 5 is an exploded perspective view of FIG. FIG. 6 is a sectional view of a plane including a line XX ′ in FIG. FIGS. 35 to 37 are schematic diagrams showing the steps of manufacturing the dielectric laminated resonator of the present embodiment.

Here, first, the outline of the manufacturing process of the dielectric laminated resonator of this embodiment will be described with reference to FIGS. 35 to 37, and then the dielectric laminated resonator will be described in detail. The configuration of the resonator will be described at the same time.

The manufacturing process of the dielectric multilayer resonator according to the embodiment of the present invention is almost the same as the process described in the first embodiment except for the following points. To manufacture vessels.

Next, the differences will be mainly described with reference to FIGS.

As shown in FIG. 35, in the case of the present embodiment, in addition to the dielectric sheet 401 corresponding to one dielectric sheet of the present invention, a dielectric sheet corresponding to another dielectric sheet of the present invention 451 is also used.

The dielectric sheet 451 has a plurality of through holes 452 corresponding to the embedding space of the present invention.
An electrode material, which is a conductive member, is embedded in the through hole 452 to form the through hole electrode 22.

On the other hand, the dielectric sheet 401 is laminated on the dielectric sheet 451, and the strip line 405 is formed in the same procedure as described in the first embodiment.

The other steps are the same as those in the first embodiment.

Next, with reference to FIGS. 4 to 6, details of the manufacturing process of the laminated dielectric resonator manufactured by the above-described manufacturing process will be described. Is also described.

4, 5 and 6, reference numeral 1 denotes a first dielectric sheet, 2 denotes a second dielectric sheet, and 3 denotes a third dielectric sheet. These dielectric sheets have a thickness of 40 μm.
A low-temperature sintered dielectric ceramic formed into a green sheet having the above thickness is used.

The first dielectric sheet 1 has a rectangular parallelepiped opening 4 punched by a puncher or a punching die, and the opening 4 is opposed from one side of the first dielectric sheet 1. It is formed so as to extend to the other side surface, and both end portions are formed so as to be arranged at the center of the one side surface and the other side surface.

The sectional width of the opening 4 is formed to be the same as the sheet thickness of the first dielectric sheet 1, that is, the sectional shape thereof is square.

The third dielectric sheet 3 has a through-hole 21 punched by a puncher or a punching die or the like, and an electrode material such as a silver paste or a metal plate is embedded in the through-hole 21 to form a through-hole electrode 22. Is formed.

The third dielectric sheet 3 is formed with the same thickness as the second dielectric sheet 2.

The first dielectric sheet 1 is laminated with the third dielectric sheet 3 disposed below, and the opening 4 is filled with an electrode material such as a silver paste or a metal plate. Is formed, and is laminated on the second dielectric sheet 2 disposed above the first dielectric sheet 1. Note that one end of the through-hole electrode 22 is connected to the strip line 5.

Also, a laminated body obtained by laminating the dielectric sheets 1, 2, and 3 (corresponding to the cut piece 411 shown in FIG. 37)
As described in the baking step, together with the strip line 5 and the through-hole electrode 22 as the internal electrodes, the baking is simultaneously performed at 960 ° C. or lower which is the melting point of silver.

Hereinafter, the steps of forming the external electrodes and the like will be described in detail with reference to FIGS.

That is, the first shield electrode 6 is screen-printed with an electrode material such as silver paste on the entire upper surface of the laminated body fired as described above, that is, on the entire upper surface of the second dielectric sheet 2. And the like, and the lower surface of the fired laminate, ie, the third dielectric sheet 3
Shield electrode 7 and island-shaped input / output electrode 1
1 is simultaneously formed as an external electrode by the same means as the first shield electrode 6.

Further, in the fired laminate,
A ground electrode 8 is formed as an external electrode on the entire surface of one side of the strip line 5 perpendicular to the line length direction by the same means as the first shield electrode 6. Side shield electrode 1 on the entire surface
2 and 13 are formed as external electrodes.

In addition, one end of the strip line 5 is connected to the ground electrode 8, and the other end of the through-hole electrode 22 is connected to the input / output electrode 1.
1 and the first shield electrode 6 and the second shield electrode 7 are connected to each other via a ground electrode 8 and side shield electrodes 12 and 13.

As described above, according to the present embodiment, in addition to having the same operation and features as the first embodiment, the cross-sectional shape of the rectangular parallelepiped opening 4 is square, that is, the cross-sectional shape of the rectangular parallelepiped strip line 5. Is squared, the high-frequency current does not concentrate on the side surface of the strip line 5, the high-frequency current can flow more uniformly, and the conductor loss of the strip line can be further reduced. Further, by providing the strip line 5 at the center of the cross section of the dielectric multilayer resonator, the electromagnetic field distribution in the dielectric multilayer resonator can be made more uniform than in the first embodiment.

These contents are also evident from the simulation results in FIG. 20. When the line thickness T = 0.5 mm where the cross-sectional shape is square, the no-load Q becomes maximum and Q =
201 is shown.

Further, by providing the side shield electrodes 12 and 13, the resonator can be completely shielded and the radiation loss of the high-frequency current can be almost completely eliminated. Therefore, it is possible to realize a small and high-performance dielectric laminated resonator having a high unloaded Q.

Further, the resonator can be completely shielded by the side shield electrodes 12 and 13, so that the electromagnetic interference between the dielectric laminated resonator and the external circuit and the dielectric laminated resonator can be brought close to each other. It is possible to prevent coupling between the resonators when they are arranged.

In addition, the through-hole electrode 22 and the input / output electrode 1
By providing 1, the connection with an external circuit can be facilitated, the number of components such as input / output fittings can be reduced, and the substantial mounting area of the dielectric laminated resonator can be reduced. A module such as a small dielectric filter can be realized.

In the present embodiment, the case where the input / output electrode 11 is provided separately from the through-hole electrode 22 has been described. However, a configuration in which the through-hole electrode also has the function of the input / output electrode is also possible. That is, in this case, it is necessary to take measures such as further increasing the cross-sectional area of the through-hole electrode. This will be described in more detail in Embodiment 9. (Embodiment 3) Hereinafter, a third embodiment of the present invention will be described with reference to the drawings.

FIG. 7 is a perspective view of a dielectric laminated resonator according to the embodiment of the present invention. FIG. 8 shows FIG.
2 is an exploded perspective view of FIG. FIG. 9 is a sectional view of a plane including a line XX ′ in FIG. In addition, FIG. 10 shows a cross-sectional view and a mounting view of a plane including the line YY ′ in FIG. Also, FIG.
FIG. 40 is a schematic diagram of the manufacturing process of the dielectric laminated resonator according to the present embodiment.

First, the outline of the manufacturing process of the dielectric laminated resonator of this embodiment will be described with reference to FIGS. 38 to 40, and then the dielectric laminated resonator will be described in detail. The configuration of the resonator will be described at the same time.

The manufacturing process of the dielectric laminated resonator according to the embodiment of the present invention is almost the same as the process described in the first embodiment except for the following points. To manufacture vessels.

Next, the differences will be mainly described with reference to FIGS.

As shown in FIG. 38, in this embodiment, two dielectric sheets 401 and a dielectric sheet 461 laminated between them are used. That is, the dielectric sheet 4
In 61, notch-shaped holes 464 a are formed at two portions in each of three slit-shaped openings 464. The input / output line 42 including the input / output electrodes is constituted by the electrode material embedded in the cutout hole 464a.

Next, with reference to FIGS. 4 to 6, details of the manufacturing process of the laminated dielectric resonator manufactured by the above-described manufacturing process will be described. Is also described.

In FIG. 7, FIG. 8 and FIG.
, 32 is a second dielectric sheet, 33 is a third dielectric sheet, 34 is a fourth dielectric sheet, and 35 is a fifth dielectric sheet. For these dielectric sheets, a low-temperature sintered dielectric ceramic formed into a green sheet having a thickness of 40 μm or more is used.

First, second and third dielectric sheets 31 and 3
Reference numerals 2 and 33 denote rectangular parallelepiped openings 36, 38 and 3 respectively punched by a puncher or a punching die.
9, each of the openings is formed so as to extend from one side surface of each dielectric sheet to the other side surface facing each other,
The cross section is located at the center of the one side and the other side.

The first dielectric sheet 31 has a rectangular parallelepiped opening 37 punched by a puncher or a punching die or the like.
From the one side surface to the side surface of the first dielectric sheet 31 so as to be bent at right angles to the opening 36, that is, in an L-shape.

Further, the second dielectric sheet 32 and the third dielectric sheet 33 are formed with the same thickness, and the cross-sectional width of each of the openings 38 and 39 is formed smaller than the cross-sectional width of the opening 36. I have.

The fourth dielectric sheet 34 and the fifth dielectric sheet 35 are formed with the same thickness. The third dielectric sheet 33 is laminated with the fifth dielectric sheet 35 disposed below, and the opening 39 is filled with an electrode material such as a silver paste or a metal plate. 40 are formed. In addition, a first dielectric sheet 31 is laminated on the third dielectric sheet 33, and a first opening 36 and a second opening 37 are provided.
A rectangular parallelepiped first strip line 41 and a rectangular parallelepiped input / output line 42 are formed in the same manner as the opening 39. Further, a second dielectric sheet 32 is laminated on the first dielectric sheet 31, and the opening
9, a rectangular parallelepiped second strip line 43 is formed, and a fourth strip line 43 is formed on the second dielectric sheet 32.
Of dielectric sheets 34 are laminated.

Further, one end of the input / output line 42 is connected to the first strip line.

Further, each of the strip lines 40, 41, 4
Numerals 3 are surface-connected to each other to form a strip line laminate 49 having a cross-shaped cross section.

Each of the dielectric sheets 31, 32, 3
As described in the above-described firing step, the laminated body in which 3, 34, and 35 are laminated (corresponding to the cut piece 411 shown in FIG. Simultaneous firing is carried out at 960 ° C. or lower, which is the melting point of silver, together with 42.

Hereinafter, the steps for forming the external electrodes and the like will be described in detail with reference to FIGS.

That is, the first shield electrode 44 is screen-printed with an electrode material such as silver paste on the entire upper surface of the laminated body fired as described above, that is, on the entire upper surface of the fourth dielectric sheet 34. Formed as external electrodes by such means as
A second shield electrode 45 is formed as an external electrode on the lower surface of the fired laminate, that is, on the lower surface of the fifth dielectric sheet 35, in the same manner as the first shield electrode 44.

Further, in the fired laminate,
A ground electrode 46 is provided on the entire surface of one side surface of the strip line orthogonal to the line length direction, a side shield electrode 47 is provided on an entire surface of one side surface of the strip line orthogonal to the width direction. I / O line 42 on the side of
Side electrode 48 so as not to contact the other end of
Are respectively the same means as the first shield electrode 44,
It is formed as an external electrode.

One end of each strip line 40, 41, 43 is connected to the ground electrode 46, and the first shield electrode 4
4 and the second shield electrode 45 are mutually connected to the ground electrode 4
6 and side shield electrodes 47 and 48.

As described above, according to the present embodiment, in addition to having the same operation and characteristics as the second embodiment, the first, second, and third strip lines 41, 43, and 40 are connected by plane. By forming the strip line laminate 49 having a cross-shaped cross-section, the cross-section can be made more circular and the cross-sectional corner can be increased from four to twelve. That is, the high-frequency current that tends to concentrate on the corner of the cross section can be dispersed, and the conductor loss of the strip line can be further reduced. Further, by providing the strip line laminated body 49 at the center of the cross section of the dielectric laminated resonator, the electromagnetic field distribution in the dielectric laminated resonator can be made more uniform than in the second embodiment. Therefore, it is possible to realize a small-sized and high-performance dielectric laminated resonator having a higher unloaded Q.

Further, by providing the input / output line 42, connection with an external circuit can be facilitated, the number of components such as input / output fittings can be reduced, and the actual mounting area of the dielectric laminated resonator can be reduced. Therefore, a module such as a small-sized dielectric filter can be realized.

Further, by extending the input / output line 42 at right angles from the other end of the first strip line 41 to the side surface of the first dielectric sheet 31, the input / output electrode for connecting to an external circuit is provided. The other end of 42 can be substituted. Therefore, it is possible to reduce the man-hour for processing the external electrodes of the dielectric laminated resonator.

In addition, as shown in FIG. 10, by exposing the side faces of the input / output line 42 to the open end face 50 of the dielectric laminated resonator, the dielectric laminated resonator is mounted on the mounting substrate 501 by reflow soldering or the like. If mounted, solder fillet 500
As a result, it becomes easy to confirm the soldering at the input / output electrodes and the soldering strength is increased. Further, since the other end of the input / output line 42, which is an extremely thick electrode, is used as the input / output electrode, the electrode is melted into the solder and the electrode is lost. Become. Therefore, a dielectric laminated resonator with high mounting reliability can be realized. Also, needless to say,
Conventionally, the input / output electrodes that were separately mounted are not required. Embodiment 4 Hereinafter, a fourth embodiment of the present invention will be described with reference to the drawings.

FIG. 11 is a perspective view of a dielectric laminated resonator according to the embodiment of the present invention. FIG. 12 is an exploded perspective view of FIG. further,
FIG. 12 is a cross-sectional view of a plane including line XX ′ in FIG.

The manufacturing process of the dielectric laminated resonator according to the embodiment of the present invention is the same as that of the third embodiment. That is,
A plurality of dielectric laminated resonators are included in the same laminated body, and the same laminated body is cut into a plurality of cut pieces, and after firing the plurality of cut pieces, an external electrode is burned to form a plurality of dielectric laminates. Create a resonator.

The dielectric laminated resonator manufactured by the above-described manufacturing process will be described in detail.

In FIGS. 11, 12, and 13, the structure is the same as that shown in the third embodiment except for the following two points. One difference is that in the third embodiment, the second
An opening 38 is formed in the dielectric sheet 32 so as to extend from one side surface of the second dielectric sheet 32 to the other opposite side, and an opening portion 39 is formed in the third dielectric sheet 33.
It is formed in the same shape as the opening 38,
In the present embodiment, a rectangular parallelepiped opening 38 is formed in the second dielectric sheet 32 so as to extend from one side surface of the second dielectric sheet 32 to the middle of the dielectric sheet.
The dielectric sheet 33 has a rectangular parallelepiped opening 39 formed in the same shape as the opening 38.

Another difference is that in the third embodiment, the widths of the openings 38 and 39 are formed smaller than the width of the opening 36, and the strip lines 40, 41 and 43 are respectively connected by plane. Although the strip line laminate 49 having a cross-sectional shape in the shape of a cross is formed, in the present embodiment, the width of the openings 38 and 39 is formed to be the same as the width of the opening 36, and the strip line 40 of each rectangular solid is formed. , 41, and 43 are connected to each other to form a strip line laminate 49.

As described above, according to the present embodiment, the third embodiment has the same operations and features except that a strip line laminate 49 having a cross-sectional shape in the shape of a cross is formed. . In addition, one end of the strip line laminate 49 to which the ground electrode 46 is connected is formed as a “thin portion” having a small cross-sectional thickness, and the other end of the strip line laminate 49 has a cross-sectional thickness. And is formed so that the cross-sectional thickness from the middle of the strip line laminated body 49 to the other end side is increased. That is, the impedance of the dielectric laminated resonator is changed stepwise on the way.
Since the type resonator is formed, the resonance frequency is reduced, and the length of the resonator can be shortened.

Further, each of the strip lines 40, 41, 43
Since the SIR resonator can be configured without reducing the line width, the length of the resonator can be reduced while maintaining a high no-load Q. Therefore, a more compact and high-performance dielectric laminated resonator can be realized.

FIG. 21 shows an example of a simulation result of the dielectric laminated resonator according to the present embodiment. In the laminated dielectric resonator shown in FIG. 11, for example, Bi ₂ O ₃ -C
aO-Nd ₂ O ₅ dielectric material (dielectric constant Er = 58, material Q = 2000) is used, silver paste (conductor resistance R = 5.2 μΩ / cm) is used for electrodes, and dielectric laminate resonance is used. Device width B = 2 mm, dielectric laminated resonator height H = 2 mm, dielectric laminated resonator length L = 5 mm, each strip line 40,
The line width W of each of the strip lines 41 and 43 is 0.5 mm, the line length LL of each of the second and third strip lines 40 and 43 is 2.5 mm,
231 shows the relationship between the resonance frequency and the no-load Q when the line thickness T1 of the strip line 41 is set to 0.1 mm and the line thickness T2 of the second and third strip lines 40 and 43 is changed. . In the laminated dielectric resonator shown in FIG. 1, one end of the strip line 5 to which the ground electrode 8 is connected is formed to have a narrow cross-sectional width, and the other end of the strip line 5 is It is formed in a wide portion having a large sectional width, and from the middle of the strip line 5,
The SIR type dielectric laminated resonator as shown in FIG. 22 was formed by setting the cross-sectional width up to the other end side wide. In SIR type dielectric laminated resonator shown in FIG. _{22, Bi 2 O 3 -CaO-} Nd 2 O 5 based dielectric material (dielectric constant Er = 58, material Q = 2000) was used to electrode silver paste ( Conductor resistance R = 5.2 μΩ / cm)
The width B = 2 mm, the height H = 2 mm, the length L = 5 mm of the dielectric laminated resonator, and the line width W1 of the wide portion of the strip line 5
= 0.5 mm, the line length L of the wide portion of the strip line 5
1 = 2.5 mm, the line thickness T of the strip line 5 = 0.
1 mm, the width W of the width of the strip line 5
The relationship between the resonance frequency and the no-load Q when 2 is changed is shown by a graph 232 in FIG.

In FIG. 21, in the SIR type dielectric laminated resonator shown in FIG. 22, as shown in graph 232, the impedance ratio is increased by setting the line width W2 = 0.1 mm to a small width, and the resonance frequency is increased to 1660 MHz. When it is lowered, no-load Q = 105, and about 40% of no-load Q deteriorates.

On the other hand, in the SIR type dielectric laminated resonator according to the present embodiment shown in FIG. 11, the impedance ratio is increased by setting the line thickness T2 of the second and third strip lines 40 and 43 to 0.3 mm. , The resonance frequency is 1634M
Even when the frequency is lowered to Hz, the no-load Q = 162, and the deterioration of the no-load Q can be kept to about 5%. That is,
The resonance frequency can be reduced with the same shape while maintaining a high no-load Q. Therefore, it can be confirmed that miniaturization and high performance can be realized. (Embodiment 5) Hereinafter, a fifth embodiment of the present invention will be described with reference to the drawings.

FIG. 14 is a perspective view of a dielectric laminated resonator according to the embodiment of the present invention. FIG. 15 is an exploded perspective view of FIG. further,
FIG. 15 is a cross-sectional view of a plane including line XX ′ in FIG.

The manufacturing process of the dielectric laminated resonator according to the embodiment of the present invention is the same as that of the third embodiment. That is,
A plurality of dielectric laminated resonators are included in the same laminated body, and the same laminated body is cut into a plurality of cut pieces, and after firing the plurality of cut pieces, an external electrode is burned to form a plurality of dielectric laminates. Create a resonator.

The details of the laminated dielectric resonator manufactured by the above manufacturing steps will be described.

In FIGS. 14, 15 and 16, the structure is the same as that shown in the fourth embodiment except for the following points. The difference is that in the fourth embodiment, the first opening 3
6, that is, the first strip line 41 is formed to have the same cross-sectional width from one side surface of the first dielectric sheet 31 to the other side surface opposed thereto, but in the present embodiment, the first strip line 41 The one end to which the ground electrode 46 is connected is formed in a narrow width with a small cross-sectional width, and the first
The other end of the strip line 41 is formed in a wide portion having a large cross-sectional width, and the cross-sectional width from the middle of the first strip line 41 to the other end is set to be wide.
An R-type resonator is formed, and the second and third strip lines 4
One end of each of the third and third strip lines 41 and 40 was connected to the other end of the first strip line 41, and the other end of the second and third strip lines 43 and 40 was connected to the middle of the first strip line 41. Is a point.

As described above, according to the present embodiment, in addition to having the same operation and characteristics as those of the fourth embodiment, the dielectric layered resonator is provided by using the first strip line 41 as an SIR type resonator. Is increased, and the length of the dielectric laminated resonator can be further reduced. Further, by adjusting the thickness of each of the dielectric sheets 31, 32, and 33 and the line width of each of the strip lines 40, 41, and 43, the cross-sectional shape of the strip line laminated body 49 can be made square. It is possible to have the same feature as the embodiment. Therefore, a more compact and high-performance dielectric laminated resonator can be realized. (Embodiment 6) Hereinafter, a sixth embodiment of the present invention will be described with reference to the drawings.

FIG. 17 is a perspective view of a dielectric laminated resonator according to the embodiment of the present invention. FIG. 18 is an exploded perspective view of FIG. further,
FIG. 18 is a cross-sectional view of a plane including a line XX ′ in FIG.

The manufacturing process of the laminated dielectric resonator according to the embodiment of the present invention is the same as that of the third embodiment. That is,
A plurality of dielectric laminated resonators are included in the same laminated body, and the same laminated body is cut into a plurality of cut pieces, and after firing the plurality of cut pieces, an external electrode is burned to form a plurality of dielectric laminates. Create a resonator.

The dielectric laminated resonator manufactured by the above manufacturing steps will be described in detail.

In FIG. 17, FIG. 18 and FIG.
Is a first dielectric sheet, 62 is a second dielectric sheet, 6
3 is a third dielectric sheet, 64 is a fourth dielectric sheet,
65 is a fifth dielectric sheet, 66 is a sixth dielectric sheet, 67 is a seventh dielectric sheet, 68 is an eighth dielectric sheet, and 69 is a ninth dielectric sheet. For these dielectric sheets, a low-temperature sintered dielectric ceramic formed into a green sheet having a thickness of 40 μm or more is used.

Each dielectric sheet 61, 62, 63, 64,
Numerals 65, 66 and 67 are rectangular parallelepiped openings 71, 72, 7 punched by a puncher or a punching die or the like.
3, 74, 75, 76, 77, wherein each of the openings is formed so as to extend from one side of each dielectric sheet to another side opposite thereto, and has a cross section of the one side and the other side. It is located in the center of.

The first dielectric sheet 61 has a rectangular parallelepiped opening 78 punched by a puncher or a punching die or the like, and the opening 78 is opened from the other side of the opening 71. The first dielectric sheet 61 is formed so as to bend at a right angle to 71, that is, in an L-shape.

Further, each of the dielectric sheets 61, 62, 6
The thicknesses t1, t2, t of 3, 64, 65, 66, 67
3, t4, t5, t6, t7 and each opening 71, 7
2, 73, 74, 75, 76, 77 each sectional width w1, w
2, w3, w4, w5, w6, and w7 are formed by the relationship represented by the following equation.

T1 × 1/2 = t2 = t3 = t4 = t5 = t6 = t7 w2 = w3 = t1 × 3/4 w4 = w5 = t1 × 1/2 w6 = w7 = t1 × 1/4 Seventh The dielectric sheet 67 is laminated with the ninth dielectric sheet 69 disposed below, and the opening 77 is filled with an electrode material such as a silver paste or a metal plate to form a rectangular parallelepiped seventh strip line 87. The seventh dielectric sheet 67 is laminated on the fifth dielectric sheet 65 disposed above, and forms a rectangular parallelepiped fifth strip line 85 in the opening 75 in the same manner as the opening 77, and The dielectric sheet 65 is the third dielectric sheet 6 disposed above.
3 and a rectangular parallelepiped third strip line 83 is formed in the opening 73 in the same manner as the opening 77, and the third dielectric sheet 63 is formed by the first dielectric sheet 61 disposed above and A first rectangular parallelepiped strip line 81 and an input / output line 88 are formed in the opening 71 and the opening 78 in the same manner as the opening 77, and the first dielectric sheet 61 is disposed on the upper side. And a second strip line 82 having a rectangular parallelepiped shape is formed in the opening 72 in the same manner as the opening 77, and the second dielectric sheet 62 is disposed above the fourth dielectric sheet 62. Dielectric sheet 6
4 and a rectangular parallelepiped fourth strip line 84 is formed in the opening 74 in the same manner as the opening 77, and the fourth dielectric sheet 64 is connected to the sixth dielectric sheet 66 disposed above. A sixth rectangular parallelepiped strip line 86 is formed in the opening 76 in the same manner as the opening 77,
The sixth dielectric sheet 66 is laminated on an eighth dielectric sheet 68 disposed above.

Further, one end of the input / output line 88 is connected to the first strip line 81.

Further, each of the strip lines 81, 82, 8
3, 84, 85, 86, and 87 are respectively surface-connected to form a strip line laminate 90 having a substantially circular cross-sectional shape.

The laminate obtained by laminating the dielectric sheets is pressed, and the dielectric sheets and the strip lines and the input / output lines, which are the internal electrodes, are simultaneously fired at 960 ° C. or less, which is the melting point of silver.

The first shield electrode 91 is formed on the entire upper surface of the fired laminate, that is, on the entire upper surface of the eighth dielectric sheet 68 by means such as screen printing of an electrode material such as silver paste. A second shield electrode 92 is formed on the lower surface of the fired laminated body, that is, the lower surface of the ninth dielectric sheet 69, as a first shield electrode 91 formed as an external electrode.
It is formed as an external electrode by the same means as described above.

Further, in the fired laminate,
A ground electrode 93 is provided on the entire surface of one side of the strip line orthogonal to the line length direction, a side shield electrode 94 is provided on the entire surface of one side of the strip line orthogonal to the width direction, and the other side surface is orthogonal to the width direction of the strip line. The side shield electrode 95 is formed as an external electrode by means similar to the first shield electrode 91 so that the other end of the input / output line 88 does not come into contact with the first shield electrode 91.

In addition, one end of each strip line is connected to the ground electrode 93, and the first shield electrode 91 and the second shield electrode 92 are mutually connected via the ground electrode 93 and the side shield electrodes 94 and 95. It is connected.

As described above, according to the present embodiment, in addition to having the same operation and characteristics as those of the third embodiment, a strip line laminate 90 having a substantially circular cross section by connecting the respective strip lines in plane is provided. By forming the high-frequency current, the high-frequency current that tends to concentrate on the corner of the cross section can be further dispersed, and the conductor loss of the strip line can be further reduced. Further, by providing the strip line laminated body 49 at the center of the cross section of the dielectric laminated resonator, the electromagnetic field distribution in the dielectric laminated resonator can be made more uniform than in the third embodiment. Therefore, since substantially the same characteristics as those of the dielectric coaxial resonator can be obtained, it is possible to realize a small-sized and high-performance dielectric laminated resonator having a higher unloaded Q. (Embodiment 7) Hereinafter, a seventh embodiment of the present invention will be described with reference to the drawings.

FIG. 23 is a perspective view of a dielectric laminated filter according to an embodiment of the present invention. FIG.
23 shows an exploded perspective view in FIG. FIG. 25 is a sectional view of a plane including a line YY ′ in FIG.

The manufacturing process of the dielectric laminated filter according to the embodiment of the present invention is almost the same as that of the first embodiment.
That is, a plurality of dielectric laminated filters are included in the same laminated body,
Cutting the same laminate into a plurality of cut pieces, firing the external electrodes after firing the plurality of cut pieces,
Create multiple dielectric laminate filters.

The details of the dielectric laminated filter manufactured by the above-described manufacturing process will be described.

23, 24 and 25, 25
1 is a first dielectric sheet, 252 is a second dielectric sheet, and 253 is a third dielectric sheet. For these dielectric sheets, a low-temperature sintered dielectric ceramic formed into a green sheet having a thickness of 40 μm or more is used.

The first dielectric sheet 251 has rectangular parallelepiped openings 254a and 254b punched by a puncher or a punching die or the like.
254b is formed so as to extend from one side surface of the first dielectric sheet 251 to the other side surface.

Further, the third dielectric sheet 253 is formed on the second dielectric sheet 253.
The input / output coupling electrode 301 is formed in the second dielectric sheet 252 with the same thickness as that of the dielectric sheet 252 of FIG.
The coupling electrode 302 is internally layered on the third dielectric sheet 253.

The first dielectric sheet 251 is laminated with the third dielectric sheet 253 disposed below, and the opening 2
An electrode material such as a silver paste or a metal plate is embedded in each of 54a and 254b to form a rectangular strip line 25.
5a and 255b are formed, and are laminated with the second dielectric sheet 252 disposed above the first dielectric sheet 251.

Each of the dielectric sheets 251, 252, 25
3 are pressed, and each dielectric sheet 2 is pressed.
51, 252, 253 and the strip lines 255a, 255b as the internal electrodes, the input / output coupling electrode 301, and the coupling electrode 302 are simultaneously fired at 960 ° C. or less, which is the melting point of silver.

Further, a first shield electrode 256 is formed as an external electrode on the upper surface of the fired laminate by means of screen printing using an electrode material such as a silver paste. On the lower surface, a second shield electrode 257 is formed as an external electrode by the same means as the first shield electrode 256.

Further, in the fired laminate,
A ground electrode 258 is provided on one side surface of the strip lines 255a and 255b orthogonal to the line length direction.
An external electrode is formed by the same means as that of the strip line, and strip-shaped on both side surfaces in the width direction of the strip lines 255a and 255b.
The side electrodes 259 and 260 and the input / output electrode 303 are formed as external electrodes by the same means as the first shield electrode 256, respectively.

In addition, strip lines 255a and 255b
Is connected to the ground electrode 258, the other end is released,
First shield electrode 256 and second shield electrode 257
Means that the ground electrode 258 and the side electrodes 259, 2
60 are connected. Also, the input / output coupling electrode 3
01 is connected to the input / output electrode 303.

The operation of the thus-configured dielectric laminated filter will be described.

By connecting one end of each of the strip lines 255a and 255b to the ground via the ground electrode 258, a short-circuited strip line resonator at the tip is formed. At the frequency at which the length of the strip line becomes a quarter wavelength, the impedance at the other end (open end) of the strip line becomes infinite and parallel resonance occurs. Also, the strip lines 255a, 255b
Are electromagnetically coupled to each other, form a coupling capacitance with the coupling electrode 302, and form an input / output capacitance with the input / output coupling electrode 301, so that the input / output electrode 303 is used as an input / output terminal. A bandpass filter is formed.

As described above, according to the present embodiment, the rectangular parallelepiped strip lines 255a and 255b are formed by embedding electrodes in the openings 254a and 254b of the dielectric sheet. The thickness of the line can be increased as compared with the case where the line is formed by screen printing or the like. Therefore, the electromagnetic field coupling between the strip lines 255a and 255b can be strengthened, and a wide band filter can be realized.

[0135] Also, no projections are formed on the dielectric sheet due to the formation of the strip line, that is, since the surface of the dielectric sheet can be flattened, the side of the strip line generated by pressing the laminated body is not formed. The collapse of the side edge can be eliminated. Therefore, the strip line 25
Since the interval between 5a and 255b can be realized with high accuracy, stable filter characteristics can be realized.

Further, since the high-frequency current can be made to flow substantially uniformly on the side surfaces of the strip lines 255a and 255b as in the first embodiment, the degradation of the no-load Q of the dielectric laminated resonator due to the conductor loss of the strip lines. Can be reduced, and as a result, a compact and high-performance dielectric laminated filter can be realized.

In addition, the first shield electrode 256 and the second
Are connected to each other via a ground electrode 258 and side electrodes 259 and 260 to form a first shield electrode 256 and a second shield electrode 257.
Can be kept at the same potential, so that self-resonance of each can be eliminated, so that more stable filter characteristics can be realized. Embodiment 8 Hereinafter, an eighth embodiment of the present invention will be described with reference to the drawings.

FIG. 26 is a perspective view of a dielectric laminated resonator according to the embodiment of the present invention. FIG. 27 is an exploded perspective view of FIG. further,
FIG. 30 is a sectional view of a plane including a line XX ′ in FIG.

The manufacturing process of the laminated dielectric resonator according to the embodiment of the present invention is the same as that of the first embodiment. That is,
A plurality of dielectric laminated resonators are included in the same laminated body, and the same laminated body is cut into a plurality of cut pieces, and after firing the plurality of cut pieces, an external electrode is burned to form a plurality of dielectric laminates. Create a resonator.

The details of the dielectric laminated resonator manufactured by the above manufacturing steps will be described.

26, 27 and 28, the structure is the same as that shown in the first embodiment except for the following points. The difference is that the first dielectric sheet 1 has a rectangular parallelepiped opening 331 punched by a puncher, a punching die or the like, and the opening 331 is
Is formed up to the side surface of the first dielectric sheet 1 so as to bend at a right angle to the first dielectric sheet 1, and an electrode material such as a silver paste or a metal plate is embedded in the opening 331 to form a rectangular parallelepiped input / output line 332. Is connected to the strip line 5 at one end.

As described above, according to the present embodiment, in addition to having the same operation and characteristics as those of the first embodiment, the provision of the input / output line 332 facilitates the connection with an external circuit. It is possible to reduce the number of components such as input / output fittings and to reduce the actual mounting area of the dielectric laminated resonator, so that a module such as a small dielectric filter can be realized.

Further, by extending the input / output line 332 from the strip line 5 at right angles to the side surface of the first dielectric sheet 1, the other end of the input / output line 332 substitutes the input / output electrode for connection to an external circuit. can do. Therefore,
It is possible to reduce the man-hour for processing the external electrodes of the dielectric laminated resonator.

Further, the input / output line 332 which is a very thick electrode
The other end is used as an input / output electrode, so that connection failure due to electrode erosion due to soldering or the like is less likely to occur. Therefore, a dielectric laminated resonator with high mounting reliability can be realized. Embodiment 9 Hereinafter, a ninth embodiment of the present invention will be described with reference to the drawings.

FIG. 29 is a perspective view of a laminated dielectric resonator according to an embodiment of the present invention. FIG. 30 is an exploded perspective view of FIG. further,
FIG. 33 is a sectional view of a plane including a line XX ′ in FIG. 29.

In the manufacturing process of the dielectric laminated resonator according to the embodiment of the present invention, similarly to the first embodiment, a plurality of dielectric laminated resonators are included in the same laminated body, and the same laminated body is cut. It is made by cutting an individual electrode after baking and firing the external electrode.

The dielectric laminated resonator manufactured by the above manufacturing steps will be described in detail.

29, 30, and 31, the structure is the same as that shown in the second embodiment except for the following points. The difference is that the recess (through hole) 21 is provided on one side surface (open end side) of the third dielectric sheet 3 and the through hole electrode 2
2 is that the side face is exposed to the open end face 350 of the laminated dielectric resonator, and the other end of the through-hole electrode 22 is substituted for an input / output electrode for connection to an external circuit. The depression 21 corresponds to an embedding space for embedding the conductive member of the present invention.

As described above, according to the present embodiment, in addition to having the same operation and characteristics as the second embodiment, an input / output electrode for connecting to an external circuit is substituted for the other end of the through-hole electrode 22. By doing so, it is possible to reduce man-hours for processing the external electrodes of the dielectric multilayer resonator.

By exposing the side surface of the through-hole electrode 22 to the open end face 350 of the dielectric laminated resonator, when the dielectric laminated resonator is mounted by reflow soldering or the like, a solder fillet is generated, and the input / output electrode is formed. This makes it easy to confirm the soldering and increases the soldering strength.

Further, since the other end of the through-hole electrode 22, which is a very thick electrode, is used as an input / output electrode, connection failure due to electrode erosion due to soldering or the like is less likely to occur.

Therefore, it is possible to realize a dielectric laminated resonator with high mounting reliability.

As described above, a dielectric laminated resonator as a dielectric laminated device may be used alone as a resonance element such as a high-frequency oscillation circuit, or may be a combination of a plurality of dielectric laminated resonators. It is used to form a dielectric filter that operates as a bandpass filter or a band elimination filter.

Further, the dielectric laminate device having the configuration of each of the above embodiments can be used for a terminal of a wireless communication device such as a mobile phone. As a result, for example, it is possible to realize a small and high-performance dielectric filter, which is one of the most important components among high-frequency components used in a wireless circuit of a mobile phone. As a result, there is an effect that the size and performance of a mobile phone or the like can be improved.

As described above, according to the dielectric laminated device of the first or seventh aspect of the present invention, for example, the strip line is formed by embedding the electrode in the opening of the dielectric sheet. Since the line thickness of the line can be made thicker than that formed by screen printing,
Concentration of high-frequency current on the side of the strip line can be reduced.

That is, since the high-frequency current can be made to flow almost uniformly on the side surface of the strip line, there is an effect that deterioration of the no-load Q of the dielectric laminated resonator due to the conductor loss of the strip line is reduced. In addition, the input / output electrodes are formed on the side surfaces of the dielectric multilayer resonator, so that they can be easily connected to an external circuit without deteriorating the electrical characteristics of the dielectric multilayer resonator, and can be used during mounting such as reflow. Has the effect of improving the reliability in

According to the dielectric laminated device of the present invention, for example, the no-load Q of the dielectric laminated resonator is improved, and the impedance of the dielectric laminated resonator is reduced. As a result, the SIR structure changes stepwise, and the resonance frequency is reduced, and the length of the resonator can be shortened.

Further, according to the dielectric laminated device of the present invention, for example, there is an effect that the no-load Q can be further improved by making the cross section of the strip line close to a cross.

According to the dielectric laminated device of the twelfth or fourteenth aspect, for example, the electromagnetic field distribution of the strip line can be made uniform in the vertical direction, and the dielectric material due to the conductor loss of the strip line can be obtained. This has the effect of further reducing the degradation of the no-load Q of the multilayer resonator.

According to the dielectric laminate device of the present invention, for example, almost perfect shielding properties can be obtained, and deterioration of no-load Q due to radiation loss of high-frequency current can be almost eliminated. It has the effect of.

According to the dielectric laminated device of the present invention, for example, the cross-sectional shape of the strip line can be made substantially circular, and there is an effect that the conductor loss can be further reduced. .

According to the dielectric laminated device of the ninth or eleventh aspect, for example, by forming the line width of the second strip line and the line width of the third strip line to be the same, Since the electromagnetic field distribution in the dielectric laminated resonator can be made uniform, there is an effect that dielectric loss can be reduced.

According to the dielectric laminated device of the present invention, for example, the impedance of the dielectric laminated resonator is greatly changed stepwise on the way, thereby further lowering the resonance frequency. This has the effect that the length of the resonator can be further reduced.

According to the dielectric laminated filter of the invention described in claim 5 or 18, for example, the strip thickness is formed by embedding an electrode in the opening of the dielectric sheet, thereby reducing the line thickness of the strip line. Since the thickness can be made thicker than that formed by screen printing, the electromagnetic field coupling between the strip lines can be strengthened, and a broadband filter can be realized. Also, on the dielectric sheet,
No convex part due to the formation of the strip line is generated,
That is, since the surface of the dielectric sheet can be flattened, it is possible to eliminate the collapse of the side edge of the strip line caused by pressing the laminated body, and it is possible to accurately realize the interval between the strip lines. Therefore, stable filter characteristics can be realized. Further, since the high-frequency current can be made to flow almost uniformly on the side surface of the strip line, the deterioration of the no-load Q of the dielectric laminated resonator due to the conductor loss of the strip line can be reduced. A dielectric laminated filter can be realized.

The embedding space of the present invention is an opening or a through-hole in the above-described embodiment, but is not limited to this, and may be, for example, a groove or a gap.

In the above-described embodiment, the method for manufacturing a dielectric laminate device of the present invention has a cutting step of cutting a plurality of dielectric devices into a single laminate of a plurality of cutting pieces. However, the present invention is not limited to this. For example, without having the cutting step, the dielectric laminated device
A manufacturing method of manufacturing one by one may be used. Even in this case, the same effect as described above is exerted.

In the above-described embodiment, the coupling electrode and the input / output coupling electrode of the present invention are arranged such that the coupling electrode is on one side with respect to a layer including two strip lines.
Further, the input / output coupling electrode is provided on the other side, but the present invention is not limited to this. For example, both electrodes may be provided on the same side with reference to the layer including the strip line. good.

[0168]

As apparent from the above description, the present invention has an advantage that the reliability of mounting of the dielectric laminated device can be improved without treating the input / output electrodes as substantially separate components. Further, the present invention has an advantage that the dielectric laminate device can be made smaller and lower in cost. It has the advantage that the number of manufacturing steps can be reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view of a dielectric laminated resonator according to a first embodiment of the present invention.

FIG. 2 is an exploded perspective view of the dielectric laminated resonator according to the first embodiment of the present invention.

FIG. 3 is a sectional view of a plane including a line XX ′ of the dielectric laminated resonator according to the first embodiment of the present invention.

FIG. 4 is a perspective view of a dielectric laminated resonator according to a second embodiment of the present invention.

FIG. 5 is an exploded perspective view of a dielectric laminated resonator according to a second embodiment of the present invention.

FIG. 6 is a cross-sectional view of a surface including a line XX ′ of the dielectric laminated resonator according to the second embodiment of the present invention.

FIG. 7 is a perspective view of a dielectric laminated resonator according to a third embodiment of the present invention.

FIG. 8 is an exploded perspective view of a dielectric laminated resonator according to a third embodiment of the present invention.

FIG. 9 is a cross-sectional view of a surface including a line XX ′ of a dielectric laminated resonator according to a third embodiment of the present invention.

FIG. 10 is a cross-sectional view and a mounting view of a plane including a line YY ′ of the dielectric laminated resonator according to the third embodiment of the present invention.

FIG. 11 is a perspective view of a laminated dielectric resonator according to a fourth embodiment of the present invention.

FIG. 12 is an exploded perspective view of a dielectric laminated resonator according to a fourth embodiment of the present invention.

FIG. 13 is a cross-sectional view of a plane including a line XX ′ of a dielectric laminated resonator according to a fourth embodiment of the present invention.

FIG. 14 is a perspective view of a laminated dielectric resonator according to a fifth embodiment of the present invention.

FIG. 15 is an exploded perspective view of a dielectric laminated resonator according to a fifth embodiment of the present invention.

FIG. 16 is a sectional view of a plane including a line XX ′ of a dielectric laminated resonator according to a fifth embodiment of the present invention.

FIG. 17 is a perspective view of a dielectric laminated resonator according to a sixth embodiment of the present invention.

FIG. 18 is an exploded perspective view of a laminated dielectric resonator according to a sixth embodiment of the present invention.

FIG. 19 is a cross-sectional view of a surface including a line XX ′ of a dielectric laminated resonator according to a sixth embodiment of the present invention.

FIG. 20 is a diagram showing a simulation result of the dielectric laminated resonator according to the first embodiment of the present invention.

FIG. 21 is a diagram showing a simulation result of the dielectric laminated resonator according to the fourth embodiment of the present invention.

FIG. 22 is an exploded perspective view of the SIR type dielectric laminated resonator according to the first embodiment of the present invention.

FIG. 23 is a perspective view of a dielectric laminated filter according to a seventh embodiment of the present invention.

FIG. 24 is an exploded perspective view of a dielectric laminated filter according to a seventh embodiment of the present invention.

FIG. 25 is a sectional view of a surface including a line YY ′ of the dielectric multilayer filter according to the seventh embodiment of the present invention.

FIG. 26 is a perspective view of a laminated dielectric resonator according to an eighth embodiment of the present invention.

FIG. 27 is an exploded perspective view of a laminated dielectric resonator according to an eighth embodiment of the present invention.

FIG. 28 is a cross-sectional view of a plane including a line XX ′ of the laminated dielectric resonator according to the eighth embodiment of the present invention.

FIG. 29 is a perspective view of a laminated dielectric resonator according to a ninth embodiment of the present invention.

FIG. 30 is an exploded perspective view of a laminated dielectric resonator according to a ninth embodiment of the present invention.

FIG. 31 is a cross-sectional view of a surface including a line XX ′ of a dielectric laminated resonator according to a ninth embodiment of the present invention.

FIG. 32 is a diagram illustrating a manufacturing process of the dielectric laminated resonator according to the first embodiment of the present invention.

FIG. 33 is a diagram for explaining a manufacturing process of the dielectric laminated resonator according to the first embodiment of the present invention.

FIG. 34 is a diagram for explaining a manufacturing process of the dielectric laminated resonator according to the first embodiment of the present invention.

FIG. 35 is a diagram illustrating a manufacturing process of the dielectric laminated resonator according to the second embodiment of the present invention.

FIG. 36 is a diagram illustrating a manufacturing process of the dielectric laminated resonator according to the second embodiment of the present invention.

FIG. 37 is a diagram illustrating a manufacturing process of the dielectric laminated resonator according to the second embodiment of the present invention.

FIG. 38 is a diagram illustrating a manufacturing process of the dielectric laminated resonator according to the third embodiment of the present invention.

FIG. 39 is a diagram illustrating a manufacturing process of the dielectric laminated resonator according to the third embodiment of the present invention.

FIG. 40 is a diagram for explaining a manufacturing process of the dielectric laminated resonator according to the third embodiment of the present invention.

FIG. 41 is a perspective view of a conventional dielectric laminated resonator.

FIG. 42 is a cross-sectional view of a plane including a line XX ′ of a conventional dielectric laminated resonator.

FIG. 43 is a cross-sectional view of a conventional dielectric stacked resonator including a line YY ′.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 first dielectric sheet 2 second dielectric sheet 3 third dielectric sheet 4 opening 5 strip line 6 first shield electrode 7 second shield electrode 8 ground electrode 9, 10 side electrode 11 input / output Electrodes 12, 13 Side shield electrode 21 Through hole 22 Through hole electrode 42 Input / output line 49 Strip line laminate 50 Open end face

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hiroshi Kagata 1006 Kadoma Kadoma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. 72) Inventor Shoichi Kitazawa 55-12 Osumihama, Kyotanabe, Kyoto Prefecture Inside Matsushita Nitto Electric Co., Ltd.

Claims (26)

[Claims] 1. A dielectric member including a low-temperature sintering material, a strip line embedded in the dielectric member, and connected to the strip line. A dielectric multilayer device comprising: an input / output electrode exposed on a surface along a line direction. 2. The dielectric laminate according to claim 1, wherein said dielectric member has a laminated structure, and said input / output electrodes are formed along a layer direction of said laminated structure. device. 3. The dielectric member according to claim 1, wherein said dielectric member has a laminated structure, and said input / output electrodes are formed in a direction substantially perpendicular to a layer direction of said laminated structure. Dielectric laminate device. 4. A dielectric member including a low-temperature sintering material, and a strip line embedded in the dielectric member, wherein the thickness or width of the strip line changes with reference to the line direction of the strip line. A laminated dielectric device, comprising: 5. A dielectric member containing a low-temperature sintering material, a plurality of striplines embedded in the dielectric member, and embedded in and coupled to the dielectric member on one or the other side of the plurality of striplines. An electrode, and an input / output coupling electrode embedded in the dielectric member on one or the other side of the plurality of strip lines, wherein the thickness of the strip line is greater than the respective thicknesses of the coupling electrode and the input / output coupling electrode. A dielectric laminated device characterized by having a large size. 6. The dielectric member has a laminated structure, with the coupling electrode on one side and the input / output coupling electrode on the other side with respect to the layer including the plurality of strip lines. The device according to claim 5, wherein the device is provided on a side. 7. A dielectric member in which a plurality of dielectric sheets are stacked; a shield electrode disposed on an outer surface of the dielectric member; and an inside of some of the plurality of dielectric sheets. And a strip line formed of an electrode material, embedded in, and an input / output electrode connected to the strip line and exposed on a surface along a line direction of the strip line among outer surfaces of the dielectric member. And a dielectric laminated device. 8. The device according to claim 7, wherein the input / output electrodes are formed along a layer direction of the dielectric sheet, or are formed in a direction substantially perpendicular to the layer direction. Dielectric laminate device. 9. A dielectric member in which a plurality of dielectric sheets including first, second, and third dielectric sheets are stacked; a shield electrode disposed on an outer surface of the dielectric member; A first strip line formed of an electrode material, embedded in the inside of the dielectric sheet, and embedded in the second dielectric sheet laminated on one surface of the first dielectric sheet. A second strip line formed of the electrode material, and an electrode material embedded in the third dielectric sheet laminated on the other surface of the first dielectric sheet. A third strip line formed, wherein the surfaces of the second and third strip lines are in contact with the surface of the first strip line along the line direction of the first strip line. And the second and the second The length of each of the strip lines is shorter than the length of the first strip line, and one end of the first strip line is electrically opened together with one end of the second and third strip lines. The other end of the first strip line is electrically connected to a ground electrode disposed on an outer surface of the dielectric member. 10. The electrode material, wherein the some dielectric sheets are first, second, and third dielectric sheets, and wherein the strip line is embedded inside the first dielectric sheet. And a second strip formed of the electrode material and embedded in the second dielectric sheet laminated on one surface of the first dielectric sheet. A strip line, and a third strip line formed of the electrode material, embedded in the third dielectric sheet laminated on the other surface of the first dielectric sheet, The surfaces of the second and third strip lines are in contact with the surface of the first strip line along the line direction of the first strip line, and the lengths of the second and third strip lines are long. The first strip Shorter than the length of the line, one end of the first strip line, the 2
9. The dielectric laminate according to claim 8, wherein the first strip line is electrically open together with one end of the third strip line, and the other end of the first strip line is electrically connected to a ground electrode. device. 11. The electrode material according to claim 11, wherein the part of the dielectric sheet is a first, a second, and a third dielectric sheet, and the strip line is embedded inside the first dielectric sheet. And a second strip formed of the electrode material and embedded in the second dielectric sheet laminated on one surface of the first dielectric sheet. A strip line, and a third strip line formed of the electrode material, embedded in the third dielectric sheet laminated on the other surface of the first dielectric sheet, The surfaces of the second and third strip lines are in contact with the surface of the first strip line along the line direction of the first strip line, and the widths of the second and third strip lines are Is the first strip Shorter than the width of the line, the dielectric laminated device according to claim 8, wherein the line length of each strip line is substantially on each same. 12. The one or more dielectric sheets are one or more layers laminated substantially at the center of the thickness of the dielectric member in the laminating direction. 9. The dielectric laminate device according to claim 7, wherein the dielectric laminate device is provided substantially at the center of the width of the sheet surface of the partial dielectric sheet in a direction orthogonal to the line direction. 13. A part of the dielectric sheets is a plurality of dielectric sheets stacked on each other, and the dielectric layer is located at a position farther from a center layer of the plurality of dielectric sheets. 10. The dielectric laminate device according to claim 7, wherein the strip line embedded in the body sheet has a smaller line width. 14. The first dielectric sheet is a layer laminated substantially at the center of the thickness of the dielectric member in the laminating direction, and each of the strip lines is arranged in a line direction of each of the strip lines. The dielectric laminated device according to claim 9, wherein the dielectric laminated device is provided substantially at a center of a width of a sheet surface of each of the dielectric sheets in a direction perpendicular to the direction. 15. The semiconductor device according to claim 7, wherein the shield electrode is formed on a surface of the dielectric member other than a surface substantially orthogonal to a line direction of the strip line. 12. The dielectric laminated device according to 9 or 11. 16. The device according to claim 9, wherein the widths of the second and third strip lines are shorter than the width of the first strip line. 17. The dielectric laminate device according to claim 9, wherein the line width of the first strip line changes with reference to the line direction of the first strip line. 18. A first dielectric sheet having a plurality of openings, a plurality of strip lines formed by embedding electrodes in the plurality of openings, and stacked on one surface of the first dielectric sheet. A second dielectric sheet, a third dielectric sheet laminated on the other surface of the first dielectric sheet, and a plurality of strip lines internally layered on the second dielectric sheet. A coupling electrode that forms a coupling capacitance between the second dielectric layer and an input / output coupling electrode that forms an input / output capacitance between the plurality of strip lines, which is internally formed on the third dielectric sheet; A first shield electrode provided on an upper surface of a dielectric sheet; and a second shield electrode provided on a lower surface of the third dielectric sheet, wherein one ends of the plurality of strip lines are connected to a ground electrode. The plurality of strikes Tsu other end of the up line is open, a dielectric laminated filter, wherein said first to third dielectric sheets are integrally sintered with the same ceramic material. 19. An embedding space forming step of forming an embedding space for embedding a conductive member in a dielectric sheet, and a step of embedding a conductive member in the embedding space and connecting the strip line to the strip line. An embedding step of forming an output electrode; and a laminating step of laminating one or more other dielectric sheets on the dielectric sheet on which the stripline and the input / output electrodes are formed to form a laminate. A method of manufacturing a stacked body device, wherein the input / output electrodes are exposed on a surface along a line direction of the strip line among outer surfaces of a stacked dielectric device manufactured based on the three steps. A method of manufacturing a dielectric laminated device, characterized by being manufactured. 20. A cutting step of cutting the laminated body into a plurality of pieces, and in the embedding space forming step, a cutting surface of the laminated body along a line direction of the strip line is selected. 20. The method according to claim 19, wherein the burying space is formed so that the input / output electrode is exposed. 21. An embedding space forming step of forming an embedding space for embedding a conductive member in a plurality of dielectric sheets, and the embedding space of one of the plurality of dielectric sheets. A strip line forming step of forming a strip line by embedding a conductive member in the conductive member; and forming an input / output electrode by embedding a conductive member in the embedding space of another dielectric sheet among the plurality of dielectric sheets. An electrode forming step, a dielectric sheet having the conductive member embedded therein is laminated so as to connect the input / output electrode and the strip line, and another dielectric sheet is laminated on the laminated dielectric sheet. A laminating step of laminating one or a plurality of layers to form a laminated body, wherein the input / output electrodes are disposed on an outer surface of the laminated body. Method for manufacturing a dielectric laminated device which is characterized in that prepared as to expose the surface along the line direction of the strip line. 22. In the embedding space forming step, the embedding is performed on the another dielectric sheet so that the input / output electrodes are formed in a direction substantially perpendicular to the layer direction of the another dielectric sheet. 22. The method according to claim 21, wherein a uniform space is formed. 23. An embedding space forming step of forming an embedding space for embedding a conductive member in a dielectric sheet; an embedding step of embedding a conductive member in the embedding space to form a strip line; Laminating a plurality of dielectric sheets on which a strip line is formed and another dielectric sheet to form a laminate. A method of manufacturing a dielectric laminated device, wherein a line length of one strip line among strip lines embedded in each layer is longer than a line length of another strip line. 24. The line width of the one strip line is:
24. The method of manufacturing a dielectric laminate device according to claim 23, wherein the direction is changed based on a line direction of the one strip line. 25. A mobile communication apparatus using the dielectric laminate device according to claim 1. Description: 26. A mobile communication device using a dielectric laminated device manufactured by the method of manufacturing a dielectric laminated device according to claim 19.