JPS62120101A - Resonator - Google Patents

Abstract

PURPOSE:To decrease the leakage of an electromagnetic field and to increase the no load Q by making the width of a resonance conductor part of a dielectric member narrower than the width of a grounding conductor part. CONSTITUTION:The resonance conductor is included by narrowing the width of the resonance conductor 7 of the dielectric member 5 than the width of the grounding conductor 6. Thus the resonator is realized where the leakage in an electromagnetic field is less and the no load Q is high. Since the width of the resonator conductor part is narrower than the width of the grounding conductor, the conductors are placed on the side face. In providing the conductor on the side face, the resonator with higher no load Q is obtained. Further, in opening a hole to the conductor provided on the side face, since the leakage quantity of the electromagnetic field is controlled, the resonator is used for a filter requiring a desired coupling quantity.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a resonator used in a high frequency band double oscillator or the like.

BACKGROUND OF THE INVENTION Recently, high frequency band resonators have been widely used as components of door wave generator 1 oscillators and the like with the development of wireless communication equipment such as car telephones, personal radios, and MCA systems. Coaxial resonators are often used as resonators in this high frequency band, but the smaller the size, the more difficult it is to form an inner conductor, and because the cross section is circular, there is wasted space for mounting. It had the disadvantage of Therefore, the cross section was made rectangular to eliminate wasted space in mounting, and the resonator was developed as a resonator that could apply thick film printing technology to conductor formation.
There is a strip line resonator as seen in the example of Japanese Patent No. 163531. Hereinafter, such a conventional resonator will be explained with reference to FIG.

FIG. 6(a) is a plan view of a conventional strip line resonator, FIG. 6(b) is a cross-sectional view of the same as seen from the dashed line a-a' in FIG. 6(a), and FIG. ) is the same sectional view taken along the dashed line b-b' in FIG. 6(a). Figure 6(a)
, (b), and (C), 1 is a dielectric, 1i body member, 2 is a grounding conductor metallized on 1 boar five-body member I, 3 is a resonance conductor, and 4 is grounded on the end face of dielectric member 1. This is a short-circuit conductor that short-circuits the conductor 2 and the conductor 3 for resonance.

In the above configuration, by selecting the length of the resonant conductor 3 to be a quarter wavelength, it operates as a balanced strip line resonator.

Problems to be Solved by the Invention However, the strip line resonator configured as above is
The cross section is rectangular, eliminating wasted space for mounting, and
This method has manufacturing advantages such as no need for alignment during conductor formation, easy manufacturing, and low cost, but since the resonant conductor is exposed, there is a large amount of electromagnetic field leakage. Therefore, when used in a door wave device, a large amount of coupling can be obtained, and in a narrow band door wave device, the coupling amount cannot be adjusted, and the shape of the P wave device becomes large.

Furthermore, when used in an oscillator, it becomes susceptible to external influences, resulting in problems such as deterioration of frequency stability.

The present invention solves the above-mentioned problems of the conventional method.It has a rectangular cross section, eliminates wasted space in mounting, eliminates the need for positioning when forming conductors, and eliminates the need for alignment and facilitates molding. It is an object of the present invention to provide a co-heater with a structure that allows cost reduction and with less electromagnetic field leakage.

Means for Solving the Problems The present invention provides a resonant conductor and a grounding conductor formed on a surface facing the resonant conductor. The above object is achieved by making the width of the resonance conductor portion of the second dielectric member narrower than the width of the grounding conductor portion.

Operation The present invention has the above-mentioned structure, and includes a resonant conductor to reduce leakage of electromagnetic field. In this structure, since the resonant conductor is included, the grounding conductor can be connected to the grounding conductor by providing a conductor on its side, which eliminates electromagnetic field leakage from the side and allows the resonator to have a high no-load Q. It is possible.

Furthermore, by making holes in the conductor provided on the side of the dielectric member, the amount of leakage of the electromagnetic field can be controlled, so it can also be used as a resonator for P-wave devices that require a desired amount of coupling. It is possible.

EXAMPLE A first example of the present invention will be described below with reference to the drawings. FIG. 1 shows a resonator in a first embodiment of the invention. Figure 1(a) shows the plan view,
Figure 1(b) is the same sectional view as seen from the dashed-dot line a-a' in Figure 1(a), and Figure 1(c) is the same cross-sectional view as seen from the dashed-dotted line b-h in Figure 1(a). FIG.

In FIGS. 1(a), (b), and (c), 5 is a dielectric member in which the width of the resonance conductor part is narrower than the width of the grounding conductor part, and 6 is a grounding member metallized on the dielectric member 5. conductor, 7
8 is a resonant conductor, and 8 is a short-circuiting conductor that short-circuits the grounding conductor 6 and the resonant conductor 7 on the end face of the dielectric member 5.

In the above configuration, by selecting the length of the resonant conductor 7 to be approximately 1/4 wavelength, it operates as a balanced strip line resonator with one end open and one end short-circuited.

In this way, by making the width of the resonant conductor part of the dielectric member narrower than that of the grounding conductor part, the common conductor is included, so there is less leakage of the '11'f magnetic field and no load is applied. A resonator with high Q can be realized.Furthermore, since the width of the resonance conductor part is narrower than the width of the grounding conductor part, the conductor can be installed on the side surface.

If this conductor is provided on the side surface, a resonator with an even higher no-load Q can be obtained. Furthermore, by making a hole in the conductor provided on this side surface, the amount of electromagnetic field leakage can be controlled, so it can also be used as a resonator for a P-wave device that requires a desired amount of coupling.

Next, other embodiments of the present invention will be described. FIG. 2 is a diagram showing a resonator in a second embodiment of the invention. Figure 2(a) shows the plan view, and Figure 2(b) shows the plan view of Figure 2(a).
) is the same cross-sectional view seen from the dashed line a
) is the same sectional view seen from the dashed line bb' in FIG. 2(a).

The difference between FIG. 2 and FIG. 1 is that the shape of the dielectric member has been changed and both ends of the resonator are open.

9 is a dielectric fK member whose grounding conductor portion is wider than one corner of the resonance conductor portion; 6 is a grounding conductor metallized on the dielectric member 9; and 7 is a resonance conductor. By selecting the length of the resonant conductor 7 to be approximately 1/2 wavelength, it is possible to realize a balanced SL-IJ tubular line resonator with both ends open and with little electromagnetic field leakage and a high no-load Q.

In this way, even if the shape of the dielectric member is different, by making the width of the grounding conductor part wider than the width of the resonance conductor part, the resonance conductor is included, and the leakage of electromagnetic field is small, and the no-load Q A high resonator can be realized. Further, it is also possible to provide a conductor on the side surface as in FIG. 1, and by providing this, an even higher no-load Q can be obtained. Also, by drilling a hole in the conductor provided on the side! ll'I! It is also possible to control the amount of leakage of the lt magnetic field.

FIG. 3 is a diagram showing a resonator in a third embodiment of the present invention. FIG. 3(a) is a plan view of the same, FIG. 3(b) is a sectional view of the same as seen from the dashed line a-a' in FIG. 3(a), and FIG. It is the same sectional view seen from the dashed-dotted line b-b' of a). This embodiment is an example in which the present invention is applied to an input/output coupling resonator. Figure 3 (a), (b),
In (c), 10.11 is a dielectric member in which the width of the grounding conductor part is wider than the width of the resonance conductor part, and 61.
．． 62 is a grounding conductor metallized on the dielectric member 10.11, 71 is a resonance conductor, 72 is a coupling conductor provided for coupling with the outside, and 81 is a grounding conductor on the end face of the dielectric member 10.11. This is a short-circuit conductor that short-circuits the conductors 61 and 62 and the resonance conductor 71.

The resonator having the above configuration mainly performs electromagnetic coupling based on a magnetic field, and is used for input/output coupling. By arbitrarily selecting the distance from the shorting conductor 81 to the coupling conductor 72, the degree of coupling with the outside can be arbitrarily determined. The resonant conductor 71 and the coupling conductor 72 are formed on the same plane, and the coupling conductor 72 not only has a structure with excellent vibration resistance that allows easy connection with the outside, but also has a structure in which the resonant conductor part of the dielectric member By making the width of the grounding conductor portion shorter than the width of the grounding conductor portion, the coupling bond with the next stage resonator can be easily adjusted by providing a conductor between the ground conductor portion and the next stage resonator.

FIG. 4 is a diagram showing a resonator in a fourth embodiment of the present invention. FIG. 4(a) is a plan view of the same, FIG. 4(b) is a cross-sectional view of the same as seen from the dashed line a-a' in FIG. 4(a), and FIG. It is the same sectional view seen from the dashed-dotted line bb' of a). This embodiment is also an example in which the present invention is applied to an input/output coupling resonator. In FIGS. 4(a), (b), and (c), FIG. 3(a).

Items with the same numbers as in (b) and (c) have the same function. 73 is a coupling conductor provided for coupling with the outside.

The resonator having the above configuration is mainly used for electromagnetic coupling based on electric fields, and is used for input/output coupling. By arbitrarily selecting the length and distance of the side of the coupling conductor 73 facing the resonance conductor 71, the degree of coupling with the outside can be arbitrarily determined.

Since the coupling conductor 73 is provided on the exposed dielectric member 11, it not only facilitates connection with the outside, but also makes the width of the resonance conductor portion of the dielectric member shorter than the width of the grounding conductor portion. By doing so, it is possible to easily realize a configuration in which the coupling method with the next stage resonator can be freely controlled.

Above, we have shown examples of several types of resonators with different resonance lengths and resonator shapes, but in all resonators, the width of the grounding conductor part is smaller than the width of the resonance conductor part of the dielectric member. By adopting a wide structure, the resonant conductor is included,
A resonator with low electromagnetic field leakage and high no-load Q can be realized. In addition, by providing a conductor on the side, the no-load Q
It is possible to realize a resonator with a high resonator, and by making holes in the conductor provided on the side, it is possible to control the amount of leakage of the electromagnetic field.

FIG. 5 shows a bandpass F wave device using a resonator in an embodiment of the present invention. Fig. 5(a) shows the plan view, and Fig. 5(b) shows the dashed dotted line a-'- in Fig. 5(a).
It is the same sectional view seen from a'.

In FIGS. 5(a) and (b), 91.92 is an input/output connector, 93 to 95 are both 85.96° of the present invention, 97 is an input/output coupling line, 98.99 is a conductor for crotch coupling, 100
is a housing, and 101 is its lid.

The bandpass P-wave device having the above configuration determines the input/output coupling by the position of the coupling conductor of the input/output coupling resonator 93.95, and then passes through the input/output coupling line 96.97. It is connected to input/output connectors 91 and 92. Furthermore, a conductor 98 with a hole for electromagnetic coupling between the resonators 93 to 95
．． By installing 99, the desired degree of crotch connection is obtained.

In this way, by making the width of the resonant conductor part of the dielectric member shorter than the width of the grounding conductor part, there is no need for alignment when forming the conductor, which facilitates manufacturing and improves vibration resistance. The inter-stage coupling degree can be easily achieved without sacrificing the advantages of the present invention, and the shape of the P-wave device can be made smaller.

Effects of the Invention As described above, in the present invention, by making the width of the resonance conductor portion of the dielectric member narrower than the width of the grounding conductor portion,
Since the resonant conductor is included, a resonator with less electromagnetic field leakage and a high no-load Q can be realized. Furthermore, since a resonance conductor is included, a conductor can be provided on the side surface, and a resonator with an even higher no-load Q can be realized. In addition, by making a hole in the conductor provided on this side, the amount of leakage of the electromagnetic field can be controlled, so it is useful as a resonator for a p-wave device that requires a desired amount of coupling, and a small door wave device can be realized. It has great industrial value.

[Brief explanation of drawings]

FIG. 1(,) is a side view of a resonator in the first embodiment of the present invention, FIGS. 1(b) and (C) are cross-sectional views of the same resonator, and FIG.
Figure (a), Figure 3 (a), and Figure 4 (/1) are side views of the resonators in the second to fourth embodiments of the present invention, Figure 2 (Figure 2)
. (C), Figure 3 (1=1), (C), Figure 4 (b), (
c) is a sectional view of the same, Figs. 6(a) and 6(b) are a side view and a sectional view of a three-stage bandpass p-wave device using a resonator according to an embodiment of the present invention, and Fig. 6(a) is a sectional view of the same. ) is a side view of a conventional dielectric resonator, and FIGS. 6(b) and (C) are sectional views thereof. 1.6,9,10.11...Dielectric member, 2゜6.61.62...Grounding conductor, 3,7.71
...Resonance conductor, 8,81... Short circuit conductor, 72°73... External coupling conductor, 91.
92...Input/output connector, 93-96...
・・Resonator, 96, 9・・・Input/output coupling line, 98.99・・・Conductor, 100・・Casing, 101・・・Lid . Name of agent: Patent attorney Toshio Nakao and 1 other person
1 Figure (a) (Shio) G Ban 1 Hayashi Figure 2 Ch) Figure 3 Z (C) Figure 4 (Shin l Figure 5 (a) Figure 6 cb)

Claims (3)

[Claims] (1) A resonance conductor, first and second dielectric members formed through the resonance conductor, and a grounding conductor formed on a surface of the dielectric member facing the resonance conductor. Equipped with
A resonator characterized in that the width of the resonance conductor portion of the first and second dielectric members is narrower than the width of the grounding conductor portion. (2) The resonator according to claim 1, wherein a conductor is provided on the side surface of the grounding conductor of the first and second dielectric members and connected to each other. (3) The resonator according to claim 2, wherein a hole is provided in the conductor connecting the grounding conductors of the first and second dielectric members.