JPH09162609A - Structure of laminated electronic parts - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a compact and thin laminated electronic parts which can improve its high frequency characteristic by partly regarding a conductor pattern of the strip line that is used as a dielectric resonator as the electrodes and adding the counter electrodes against those electrodes and holding a dielectric between them. SOLUTION: A dielectric resonator consists of a triplet strip line consisting of a ground pattern 3, a conductor pattern 1a and a dielectric 4. The pattern 1a is partly regarded as the counter electrodes of a capacitor, and the electrodes 2 are prepared against these counter electrodes according to need. Then the inductance component consisting of a conductor pattern 1b is laminated on the upper part of the resonator, and the function parts 5 including a transistor, a resistance, etc., are mounted on a wiring pattern formed at the upper part of the laminated body. Then the wiring pattern is connected to the electrodes 2 and the pattern 1b. In such a constitution, the connection is facilitated to other function parts via the capacitor and also the high frequency loss can be reduced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a laminated electronic component, and more particularly to an electrode structure of a capacitor arranged in the laminated electronic component.

[0002]

2. Description of the Related Art Multilayer electronic components are used for automobile phones, mobile phones,
It is widely used in mobile communication radios and small electronic devices. Among laminated electronic components, high-frequency composite components such as LC networks, filters, and voltage controlled oscillators are strip lines used as dielectric resonators inside the laminated body, inductance components made of conductor patterns, and a base made of a dielectric. It includes a capacitor component and the like using as a medium, and arranges active components and the like on the surface of the laminated body as necessary.

In these high frequency composite components, the inductance component formed of the dielectric resonator or the conductor pattern of the strip line and the capacitor component using the base of the dielectric as a medium must be connected in a laminated body.

However, since it is impossible to connect the wires inside the laminate, it has been common practice to connect the wires to each other through the external connection terminals or via holes. FIG. 6 shows the structure of a voltage controlled oscillator which is an example thereof.

In the side view of FIG. 6A, in order to connect a capacitor component, an inductance component and a dielectric resonator, a layer 12 forming an inductance, a layer 13 forming a capacitor and a layer forming a dielectric resonator. 14 are laminated, and they are connected to each other by end conductors 11 and via holes (not shown) provided at the end of the laminate. After that, if necessary, the active component 5 and the like are mounted on the top of the stacked body to function as a voltage controlled oscillator.

FIG. 6B shows a sectional view thereof. Note that, here, the high-frequency transmission line configured by the ground pattern 15, the dielectric 16, and the conductor pattern 17 as shown in FIG.
As shown in (b), a high frequency transmission line having a ground pattern 15, a dielectric 16 and a conductor pattern 17 and having a shield effect is called a triplate type strip line. In addition, these are collectively referred to as a strip line.

As the layer 12 for forming the inductance, a conductor pattern 12 is formed inside a dielectric layer made of an insulator or a magnetic substance.
a is laminated so as to circulate, and its conductor pattern 12a
Is disposed at the end of the laminated body as a connecting electrode.
Further, the layer 13 forming the capacitor is provided with an electrode 13a using a base 13b made of a dielectric material as a medium, and an end portion of the electrode is arranged at an end portion of the base 13b as a connecting electrode.
Furthermore, the electrodes of the layer 14 forming the dielectric resonator are also arranged at the ends.

Then, the connection electrodes provided at the ends of the laminated body are connected using the end conductors 11, respectively. This makes it possible to obtain a laminate which is a composite component of LC.

When the layer 12 for forming the inductance, the layer 13 for forming the capacitor, and the layer 14 for forming the dielectric resonator are connected by using the end conductor 11, the connection electrode is arranged at the end of the laminate. It is necessary to place a connecting electrode inside the laminated body and connect it by using a via hole because not only the restriction on the design becomes large because it is necessary but also the high frequency characteristics are greatly affected.

In this way, a laminated body which is an LC composite component can be obtained, and if necessary, the active component 5 and the like are mounted on the upper portion thereof.

[0011]

In the conventional laminated component, the layer forming the capacitor and the layer forming the inductance are formed as separate laminates, and these are laminated and connected to each other to form an LC composite component. It makes up the body.

However, the current market demands electronic components that are as thin and small as possible. In such a case,
The layer forming the capacitor and the layer forming the inductance are configured as separate laminated bodies, and the method of laminating and connecting them cannot provide a small and thin electronic component in response to the demand.

In order to solve such a problem
No. 144918, and Japanese Utility Model Laid-Open No. 59-144918 are disclosed. This relates to an LC filter element, in which a conductor pattern laminated in a circular shape is connected by a via hole or the like to form an inductance component, and a part of the conductor pattern forming the inductance component is formed of an insulating sheet. An LC filter element is formed by forming a capacitor component so as to face each other with a capacitor component provided therebetween to provide a small and thin electronic component.

However, the loss in the high frequency region is high,
Not only is it difficult to use in the high-frequency region, but there is a problem that when it is connected to another functional circuit as a high-frequency composite component, a loss occurs in the connection line.

When a layer forming a capacitor, a layer forming an inductance, and a layer forming a dielectric resonator are connected as a high-frequency composite component, if they are connected by using end conductors or via holes, that portion is connected. May increase, resulting in deterioration of high frequency characteristics.

Further, the connection using the end conductors may not be able to satisfy the required characteristics because it is easily influenced by the outside.

Therefore, an object of the present invention is to provide a small and thin high frequency composite component which has good high frequency characteristics and is not influenced by the outside.

[0018]

In order to achieve the above object, the present invention according to claim 1 regards a part of a conductor pattern of a strip line used as a dielectric resonator as an electrode and sandwiches a dielectric. A capacitor is formed by providing a counter electrode at a position facing the conductor pattern of the strip line.

Further, the invention according to claim 2 can achieve the above object by having a circuit in which the dielectric resonator and another functional circuit are coupled by the capacitor.

[0020]

When forming a capacitor which is one of the elements of the composite electronic component for high frequency control, a part of the conductor pattern of the strip line which constitutes the dielectric resonator is regarded as the counter electrode of the capacitor, and the base which is the dielectric is used. By providing the counter electrode at a position facing the electrode with the capacitor sandwiched therebetween, a capacitor component circuit-connected to the strip line can be formed.

Therefore, since the capacitor component and the strip line constituting the dielectric resonator can be directly connected without via the via hole or the external conductor, connection with other functional parts via the capacitor or via the capacitor is possible. Since it can be easily connected to all the ground patterns and the high frequency loss can be made extremely small, the high frequency characteristics can be improved.

Further, since it is possible to arrange electrodes at several places on the base which constitutes the counter electrode of the capacitor component, the degree of freedom in circuit construction is high.

[0023]

EXAMPLES Next, the present invention will be described in detail with reference to examples.

FIG. 1 shows a sectional view of a voltage controlled oscillator which is one of the laminated electronic components for explaining the laminated electronic component according to the present invention.

In a dielectric resonator composed of a triplate-type strip line consisting of a ground pattern 3, a conductor pattern 1a and a dielectric 4, a part of the conductor pattern 1a is regarded as a counter electrode of a capacitor and an electrode 2 facing them. Are arranged as required. Then, an inductance component composed of the conductor pattern 1b is laminated on the dielectric resonator, and the functional component 5 such as a transistor and a resistor is further laminated.
Is mounted on a wiring pattern provided on the upper part of the laminated body, and the wiring pattern is connected to the electrode 2 of the capacitor and the conductor pattern 1b.

Since the capacitor and the dielectric resonator are directly connected to each other without a via hole or an external conductor, a voltage controlled oscillator exhibiting excellent high frequency characteristics can be obtained.

FIG. 2 shows a typical circuit example of the voltage controlled oscillator. The voltage controlled oscillator 6 has a circuit configuration as shown in FIG. 2, and includes a circuit portion 7 including a dielectric resonator 7a and a capacitor 7b, a functional circuit 5 including a transistor and a resistor, and an inductance component 8a including a conductor pattern. LC circuit section 8 including capacitor 8b and ground 9
Consists of

Here, a part of the laminate according to the present invention is shown in FIG.
Shown in

The conductor pattern 1 of the strip line is arranged on the base 4 made of a dielectric material, and another base made of a dielectric material on which the counter electrode pattern 2 of the capacitor is arranged is laminated.

The opposing electrode pattern 2 of the capacitor is arranged at a position opposed to the conductor pattern 1 of the strip line with a dielectric interposed therebetween, and a part of the conductor pattern 1 of the strip line is regarded as an electrode on one side of the capacitor to form the capacitor. To do. Since the area of the counter electrode pattern 2 of the capacitor or the thickness of the dielectric can be adjusted freely, the required capacitance value can be set freely. Furthermore, since the capacitor and the conductor pattern 1 of the strip line are directly connected, it is possible to minimize the loss.

Here, a base 42 made of a dielectric material in which a counter electrode of a capacitor is sequentially provided on a base 41 made of a dielectric material in which the ground pattern 3 is provided, and a dielectric material having the counter electrodes 2 of a plurality of capacitors provided therein. A base 43, a base 44 made of a dielectric provided with the conductor pattern 1a of the strip line, a base 45 made of a dielectric provided with the counter electrodes 2 of the plurality of capacitors, a base 46 made of a dielectric provided with the counter electrodes of the capacitors, A base 47 made of a dielectric provided with the ground pattern 3, a base 48 made of a dielectric provided with the counter electrode of the capacitor, a base 49 made of a dielectric provided with the conductor pattern 1b forming the inductance component, and a wiring pattern were provided. A voltage controlled oscillator is constructed by stacking bases 40 made of a dielectric material.

Here, in the circuit section 7 including the dielectric resonator 7a and the capacitor 7b in the circuit diagram shown in FIG.
The part connected in series between a and the ground 3 is
Bases 42 and 43 provided with the counter electrode 2 of the capacitor arranged between the bases 41 and 47 including the ground pattern 3 and the base 44 including the conductor pattern 1a which constitute the dielectric resonator of the laminated body shown in FIG. It is composed of 45 and 46.

Further, with such a structure, it is possible to easily form a series connection of capacitors and the like, and it is possible to easily obtain a circuit in which circuits are coupled by capacitors.

FIG. 5A shows a typical circuit of a high-pass filter and FIG. 5B shows a typical circuit of a band-pass filter. These circuits can also be composed of a laminated body composed of an inductance component 9 and a capacitor component 10 which are strip line conductor patterns. The composite component having such a circuit configuration is also a circuit composed of an inductance component made of a strip line conductor pattern and a capacitor, and the present invention can be applied thereto.

The present invention is not limited to the circuit described above, but can be applied to high frequency compatible laminated electronic components such as various filters and synthesizer modules.

[0036]

As described above, according to the present invention, a part of a conductor pattern of a strip line formed on a base made of a dielectric is used as an electrode on one side of a capacitor, and a pair of electrodes is provided at a position facing the part. Since it is possible to minimize the distributed capacitance between the patterns between terminals by providing the laminated electronic component, it is possible to obtain a laminated electronic component having a high degree of freedom in design and good high frequency characteristics, and the laminated electronic component is a thin and compact type. It is possible to have no external influence.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a voltage controlled oscillator that is one of the laminated electronic components of the present invention.

FIG. 2 is a typical circuit example of a voltage controlled oscillator.

FIG. 3 is a partial drawing of a laminated body made of LC

FIG. 4 is an assembly diagram of a laminated electronic component (voltage controlled oscillator).

FIG. 5 is another embodiment of the laminated electronic component according to the present invention.

FIG. 6 is a structural diagram of a conventional laminated electronic component.

FIG. 7 is a configuration diagram of a strip line.

[Explanation of symbols]

 1 conductor pattern 2 electrode on one side constituting a capacitor 3 ground pattern 4 base composed of dielectric 5 functional circuit 6 voltage controlled oscillator 7 circuit section 8 circuit section 9 dielectric resonator 10 capacitor component 11 outer conductor 12 forming an inductor Layer 13 that forms a capacitor 14 layer that forms a dielectric resonator 15 ground portion of a strip line 16 dielectric portion of a strip line 17 conductor portion of a strip line

Claims (2)

[Claims] 1. A capacitor by considering a part of a conductor pattern of a strip line used as a dielectric resonator as an electrode and providing a counter electrode at a position opposed to the conductor pattern of the strip line with a dielectric interposed therebetween. A laminated electronic component comprising: 2. The laminated electronic component according to claim 1, further comprising a circuit in which the dielectric resonator and another functional circuit are coupled by the capacitor.