JPS63269804A - Method for adjusting resonance frequency of dielectric resonator - Google Patents
Method for adjusting resonance frequency of dielectric resonatorInfo
- Publication number
- JPS63269804A JPS63269804A JP10555787A JP10555787A JPS63269804A JP S63269804 A JPS63269804 A JP S63269804A JP 10555787 A JP10555787 A JP 10555787A JP 10555787 A JP10555787 A JP 10555787A JP S63269804 A JPS63269804 A JP S63269804A
- Authority
- JP
- Japan
- Prior art keywords
- dielectric
- resonance frequency
- resonator
- parts
- resonant frequency
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 19
- 239000004840 adhesive resin Substances 0.000 claims abstract description 13
- 229920006223 adhesive resin Polymers 0.000 claims abstract description 13
- 239000000843 powder Substances 0.000 claims abstract description 10
- 239000003989 dielectric material Substances 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 abstract description 7
- 238000000576 coating method Methods 0.000 abstract description 7
- 239000000919 ceramic Substances 0.000 abstract description 6
- 239000000463 material Substances 0.000 abstract description 6
- 238000001035 drying Methods 0.000 abstract description 5
- 239000004020 conductor Substances 0.000 abstract description 4
- 239000003822 epoxy resin Substances 0.000 abstract description 4
- 229920000647 polyepoxide Polymers 0.000 abstract description 4
- 229920005989 resin Polymers 0.000 abstract description 4
- 239000011347 resin Substances 0.000 abstract description 4
- JRPBQTZRNDNNOP-UHFFFAOYSA-N barium titanate Chemical class [Ba+2].[Ba+2].[O-][Ti]([O-])([O-])[O-] JRPBQTZRNDNNOP-UHFFFAOYSA-N 0.000 abstract description 3
- 239000007767 bonding agent Substances 0.000 abstract 2
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical class [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 abstract 1
- 239000000853 adhesive Substances 0.000 description 6
- 230000001070 adhesive effect Effects 0.000 description 6
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 229910002113 barium titanate Inorganic materials 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 2
- 239000012790 adhesive layer Substances 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
Landscapes
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は共振器、フィルタ等として用いられる誘電体共
振器の共振周波数調整方法に係るもので、特に共振周波
数を低下させる方法に関するものである。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a method for adjusting the resonant frequency of a dielectric resonator used as a resonator, a filter, etc., and particularly relates to a method for lowering the resonant frequency. .
セラミック誘電体を用いた誘電体同軸共振器は、共振器
そのものとしてだけでなく、フィルタあるいは共用器等
に用いられている。これは、誘電体セラミックを円筒状
に成型、焼成し、開放端面を除く表面に電極を形成した
ものである。A dielectric coaxial resonator using a ceramic dielectric is used not only as a resonator itself but also as a filter, a duplexer, and the like. This is made by molding and firing a dielectric ceramic into a cylindrical shape, and forming electrodes on the surface except for the open end surface.
この誘電体共振器の共振周波数は、共振器の軸方向の寸
法によって決まるが、実際に用いる際には、共振周波数
の調整が必要となることが多い。The resonant frequency of this dielectric resonator is determined by the axial dimension of the resonator, but in actual use, it is often necessary to adjust the resonant frequency.
共振周波数を調整する方法は幾つか提案されており、共
振周波数を下げる方法としては、実開昭５７−１２５０
０２号公報などに誘電体を削ることが示されている。Several methods have been proposed for adjusting the resonant frequency, and a method for lowering the resonant frequency is described in Utility Model Application Publication No. 57-1250.
Patent No. 02 discloses cutting a dielectric material.
逆に共振周波数を上げる方法は、特開昭５８−２０４６
０２号公報に短絡面の電極を削除する方法が、また実開
昭５７−１１８０４号公報には開放端面に誘電体チップ
を貼り付ける方法が示されている。On the other hand, the method of increasing the resonant frequency is described in Japanese Patent Application Laid-Open No. 58-2046.
No. 02 discloses a method of removing the electrode on the short-circuit surface, and Japanese Utility Model Application Publication No. 57-11804 discloses a method of pasting a dielectric chip on the open end surface.
短絡面を削る場合、ある面積以上にわたる場合には、誘
電体共振器のＱを低下させるという問題が生じる。そこ
で、一般には誘電体チップを開放端面に貼る方法が採ら
れているが、作業性が悪い上に微少の調整が難しいとい
った問題が生じている。すなわち、誘電体チップを接着
剤が硬化するまで押さえる必要があり、またチップの厚
み及び接着剤層の厚みによってばらつきを生じ易く、微
妙な調整をすることが困難であった。When cutting the short-circuit surface over a certain area, a problem arises in that the Q of the dielectric resonator is lowered. Therefore, a method is generally adopted in which a dielectric chip is attached to the open end surface, but this method has problems such as poor workability and difficulty in making minute adjustments. That is, it is necessary to press the dielectric chip until the adhesive hardens, and variations tend to occur depending on the thickness of the chip and the thickness of the adhesive layer, making it difficult to make delicate adjustments.
本発明は、上記のような問題点を解決して、作業性の良
好な誘電体共振器の共振周波数調整方法を提供すること
を目的とする。An object of the present invention is to solve the above-mentioned problems and provide a method for adjusting the resonance frequency of a dielectric resonator with good workability.
また、共振周波数の微調整が容易な誘電体共振器の共振
周波数調整方法を提供することを目的とするものである
。Another object of the present invention is to provide a method for adjusting the resonant frequency of a dielectric resonator, which allows fine adjustment of the resonant frequency.
本発明は、誘電体粉末を含んだ接着性樹脂材を誘電体共
振器の開放端面に塗布し、硬化させることによって上記
の目的を達成するものである。The present invention achieves the above object by applying an adhesive resin material containing dielectric powder to the open end surface of a dielectric resonator and curing the adhesive resin material.
すなわち、円筒形の誘電体の内周面及び外周面に電極を
形成し、平坦面の少な（とも一方に誘電体を露出させて
開放端とした誘電体共振器の共振周波数調整方法におい
て、該開放端面に誘電体粉末を含む接着性樹脂を塗布し
、硬化させることによって該誘電体共振器の共振周波数
を下げることに特徴を有するものである。That is, in a resonant frequency adjustment method of a dielectric resonator in which electrodes are formed on the inner peripheral surface and outer peripheral surface of a cylindrical dielectric material, and the dielectric material is exposed on one side and has an open end. The feature is that the resonant frequency of the dielectric resonator is lowered by applying an adhesive resin containing dielectric powder to the open end face and curing the adhesive resin.
誘電体粉末を含んだ接着性樹脂を塗布する量の調整によ
って、任意の共振周波数を得ることができる。Any desired resonance frequency can be obtained by adjusting the amount of adhesive resin containing dielectric powder applied.
以下、図面を参照して、本発明の実施例について説明す
る。Embodiments of the present invention will be described below with reference to the drawings.
第１図は、本発明によって共振周波数を調整した誘電体
共振器の斜視図である。誘電体セラミ・ツクを円筒状に
成型し、焼成した表面に電極が形成されている。円筒の
内表面には内導体１１が、外表面には外導体１２が形成
されている。平坦面の一方には電極が形成されておらず
、誘電体セラミック１３が露出している。図には示され
ていないが、反対側の平坦面は短絡面となりでおり、電
極が形成されている。これによって、１／４波長誘電体
同軸共振器１０が構成されている。FIG. 1 is a perspective view of a dielectric resonator whose resonant frequency is adjusted according to the present invention. Dielectric ceramic material is molded into a cylindrical shape, and electrodes are formed on the fired surface. An inner conductor 11 is formed on the inner surface of the cylinder, and an outer conductor 12 is formed on the outer surface. No electrode is formed on one of the flat surfaces, and the dielectric ceramic 13 is exposed. Although not shown in the figure, the flat surface on the opposite side serves as a short-circuit surface, and an electrode is formed thereon. This constitutes a quarter wavelength dielectric coaxial resonator 10.
開放端面１３には、誘電体粉末を含む接着性樹脂１４が
塗布されている。この接着性樹脂の面積によって、共振
周波数が調整されるようにしたものである。An adhesive resin 14 containing dielectric powder is applied to the open end surface 13 . The resonance frequency is adjusted by the area of this adhesive resin.
次に、実際に誘電体粉末を含む接着性樹脂を塗布して、
共振周波数の変化を測定した結果について、第２図を参
照して説明する。Next, we actually apply adhesive resin containing dielectric powder,
The results of measuring changes in resonance frequency will be explained with reference to FIG. 2.
接着性樹脂として、チタン酸バリウム系誘電体粉末（ε
＝ ５００）約９０部とエポキシ系樹脂接着剤１０部と
を均一混合したものを用いた。これは、乾燥、硬化後の
見掛比誘電率はおよそε−７０であった。Barium titanate dielectric powder (ε
= 500) and 10 parts of an epoxy resin adhesive were used. The apparent dielectric constant after drying and curing was approximately ε-70.
別の接着性樹脂として、酸化チタン系誘電体（ε−１０
０）とエポキシ系樹脂接着剤を用い、誘電体５０〜９０
部、接着剤５０〜１０部を混合したものを用いた。それ
らの硬化後の見掛比誘電率はおよそε−８〜２０となっ
ていた。Another adhesive resin is a titanium oxide dielectric (ε-10
0) and epoxy resin adhesive, dielectric material 50-90
A mixture of 50 to 10 parts of adhesive was used. The apparent dielectric constants after curing were approximately ε-8 to 20.
上記の二種類の接着性樹脂を、誘電体共振器の開放端面
に塗布し、乾燥硬化させた結果、共振周波数がどれだけ
変化したかを示したものが第２図である。開放端面に塗
布する面積（横軸）を増加させた場合の共振周波数の減
少（′＃１軸）を示している。FIG. 2 shows how much the resonant frequency changed as a result of applying the above two types of adhesive resins to the open end surface of the dielectric resonator and drying and curing them. It shows the decrease in resonance frequency ('#1 axis) when the area coated on the open end surface (horizontal axis) is increased.
曲線２１はチタン酸バリウム系誘電体を含む樹脂を塗布
した場合を示している。誘電率が比較的高いので、共振
周波数の減少の量も大きくなっている。図にも示された
ように、８ｍｍ”塗布したときに、約６ＭＩ！ｚ下がっ
た。なお、Ｑも若干低下するが、図に示したような小さ
い面積の範囲では、はとんど問題にならない値の範囲で
あった。Curve 21 shows the case where a resin containing a barium titanate dielectric is applied. Since the dielectric constant is relatively high, the amount of reduction in resonant frequency is also large. As shown in the figure, when applying 8mm", the MI!z decreased by about 6 MI!z. Note that Q also decreases slightly, but in a small area like the one shown in the figure, it hardly becomes a problem. It was within the range of values that should not be exceeded.
曲線２２は酸化チタン系誘電体を含む樹脂を塗布場合を
示している。この例では、誘電体９０部、接着剤１０部
の比率となっている。前記のように、誘電率が比較的小
さいので、共振周波数の変化量も小さくなっている。８
ｍｍ”塗布したときに、約２ＭＨｚ共振周波数が下がっ
ていた。Curve 22 shows the case where a resin containing a titanium oxide dielectric is applied. In this example, the ratio is 90 parts dielectric and 10 parts adhesive. As mentioned above, since the dielectric constant is relatively small, the amount of change in the resonant frequency is also small. 8
mm", the resonance frequency was lowered by about 2 MHz.
本発明による誘電体共振器の共振周波数調整方法は、自
動化に適している。マイクロディスペンサー等によって
定量供給、塗布が可能であり、連続的処理も容易である
。The method for adjusting the resonance frequency of a dielectric resonator according to the present invention is suitable for automation. Quantitative supply and application are possible using a microdispenser, etc., and continuous processing is also easy.
なお、本発明は同軸共振器だけでなく、複数の素子が一
体に形成されたブロック形などにも応用できる。Note that the present invention can be applied not only to coaxial resonators but also to block-type devices in which a plurality of elements are integrally formed.
また、塗布する種類を変えることによって、調整の範囲
を大きくしたり、微妙な調整を可能にしたりすることも
容易である。Furthermore, by changing the type of coating, it is easy to widen the range of adjustment or make subtle adjustments possible.
本発明によれば、塗布、乾燥のみの工程によって誘電体
共振器の共振周波数を調整できるので、作業性が良好で
しかも自動化の容易な方法が得られる。According to the present invention, since the resonant frequency of the dielectric resonator can be adjusted by only the steps of coating and drying, a method with good workability and easy automation can be obtained.
また、材料の選択や塗布量の調整によって共振周波数の
調整ができるので、微妙な調整も容易となる。Further, since the resonant frequency can be adjusted by selecting the material and adjusting the amount of coating, delicate adjustments can be made easily.
第１図は本発明を通用する誘電体共振器の斜視図であり
、第２図は塗布量と周波数の変化を示す説明図である。
ｌＯ：誘電体共振器
１３：誘電体セラミック（開放端面）
１４：接着性塗料FIG. 1 is a perspective view of a dielectric resonator to which the present invention can be applied, and FIG. 2 is an explanatory diagram showing changes in coating amount and frequency. lO: Dielectric resonator 13: Dielectric ceramic (open end surface) 14: Adhesive paint
Claims (1)
平坦面の少なくとも一方に誘電体を露出させて開放端と
した誘電体共振器の共振周波数調整方法において、該開
放端面に誘電体粉末を含む接着性樹脂を塗布し、硬化さ
せることによって該誘電体共振器の共振周波数を下げる
ことを特徴とする誘電体共振器の共振周波数調整方法。Forming electrodes on the inner and outer peripheral surfaces of a cylindrical dielectric,
In a method for adjusting the resonant frequency of a dielectric resonator having an open end by exposing a dielectric on at least one of the flat surfaces, the dielectric material is adjusted by applying an adhesive resin containing dielectric powder to the open end surface and curing the dielectric material. A method for adjusting the resonant frequency of a dielectric resonator, characterized by lowering the resonant frequency of the resonator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10555787A JPS63269804A (en) | 1987-04-28 | 1987-04-28 | Method for adjusting resonance frequency of dielectric resonator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10555787A JPS63269804A (en) | 1987-04-28 | 1987-04-28 | Method for adjusting resonance frequency of dielectric resonator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63269804A true JPS63269804A (en) | 1988-11-08 |
Family
ID=14410850
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10555787A Pending JPS63269804A (en) | 1987-04-28 | 1987-04-28 | Method for adjusting resonance frequency of dielectric resonator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63269804A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5448064A (en) * | 1977-09-22 | 1979-04-16 | Nitsuko Ltd | Condenser |
| JPS5711804B2 (en) * | 1979-01-19 | 1982-03-06 |
-
1987
- 1987-04-28 JP JP10555787A patent/JPS63269804A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5448064A (en) * | 1977-09-22 | 1979-04-16 | Nitsuko Ltd | Condenser |
| JPS5711804B2 (en) * | 1979-01-19 | 1982-03-06 |
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