JPS5951084B2 - dielectric porcelain material - Google Patents
dielectric porcelain materialInfo
- Publication number
- JPS5951084B2 JPS5951084B2 JP52138573A JP13857377A JPS5951084B2 JP S5951084 B2 JPS5951084 B2 JP S5951084B2 JP 52138573 A JP52138573 A JP 52138573A JP 13857377 A JP13857377 A JP 13857377A JP S5951084 B2 JPS5951084 B2 JP S5951084B2
- Authority
- JP
- Japan
- Prior art keywords
- dielectric
- temperature
- dielectric porcelain
- dielectric constant
- porcelain material
- 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.)
- Expired
Links
Landscapes
- Compositions Of Oxide Ceramics (AREA)
- Inorganic Insulating Materials (AREA)
Description
【発明の詳細な説明】 本発明は誘電体磁器材料、特にＢａＯ、ＭｑＯ、Ｎｂ。[Detailed description of the invention] The present invention relates to dielectric ceramic materials, particularly BaO, MqO, and Nb.
Ｏ。、Ｔａ。Ｏ。の成分で構成される誘電体共振器など
に使用される磁器材料に関するものであり、誘電率（ε
）が大きく、無負荷Ｑが大きく、さらに共振周波数の温
度安定度（τｆ）の優れたマイクロ波用誘電体共振器を
構成し得る誘電体磁器材料を提供しようとするものであ
る。従来から、マイクロ波領域において、マイクロ波回
路のインピーダンス整合や、誘電体共振器などに、誘電
体が応用されてきている。O. , Ta. O. This relates to ceramic materials used in dielectric resonators, etc., which are composed of components with a dielectric constant (ε
), a large no-load Q, and an excellent temperature stability (τf) of the resonance frequency. BACKGROUND ART Dielectric materials have been applied to impedance matching of microwave circuits, dielectric resonators, etc. in the microwave region.
近年、特に、マイクロ波回路の集積化の技術が進歩する
にともない、発振器の周波数の安定化などに、高誘電率
、低損失、低価格の誘電体磁器を使用して、電子機器を
小形化することが積極的に進められている。これまで、
この種の誘電体材料としては、ＢａＯ−ＴｉＯ。系磁器
、および、この元素の一部を他の元素で置換した磁器、
さらには誘電率が負の温度変化をもつＴｉＯ。と正の誘
電率の温度変化をもつ誘電体磁器とを組合わせたものを
使用する場合が多い。しかし、これらは、誘電体損失が
大きかつたり、誘電率の温度変化のばらつきが大きかつ
たり、あるいは共振周波数の温度安定度が大きすぎたり
するという欠点がある。In recent years, especially as the technology for integrating microwave circuits has progressed, electronic devices have been made smaller by using dielectric ceramics with high dielectric constant, low loss, and low cost to stabilize the frequency of oscillators. This is being actively pursued. Until now,
An example of this type of dielectric material is BaO-TiO. system porcelain, and porcelain in which some of these elements are replaced with other elements,
Furthermore, TiO has a negative dielectric constant that changes with temperature. In many cases, a combination of dielectric ceramic and dielectric ceramic having a positive dielectric constant that changes with temperature is used. However, these have drawbacks such as large dielectric loss, large variations in temperature change in dielectric constant, or too large temperature stability of resonant frequency.
また、共振周波数の温度係数を変化させようとすると、
Ｑがいちぢるしく低下するなど、実用上の問題が多い。
本発明はこれらの欠点を除いたものであり、一般式３Ｂ
ａＯ−ｘＭｇ０・（１−ｙ）Ｎｂ。Also, if you try to change the temperature coefficient of the resonant frequency,
There are many practical problems, such as a significant drop in Q.
The present invention eliminates these drawbacks, and the general formula 3B
aO-xMg0.(1-y)Nb.
Ｏ。・ｙＴａ。Ｏ。で表わされる組成において、０．６
≦Ｘ≦２．０、０＜ｙ＜１の範囲内にある組成の磁器材
料が、優れた誘電体マイクロ波共振器になることを見出
したことにもとづくものである。以下、実施例にもとづ
いて、本発明を説明する。O.・yTa. O. In the composition represented by 0.6
This invention is based on the discovery that a ceramic material having a composition within the range of ≦X≦2.0 and 0<y<1 becomes an excellent dielectric microwave resonator. Hereinafter, the present invention will be explained based on Examples.
まず、ＢａＣＯ。First, BaCO.
、ＭｇＯ、Ｎｂ。Ｏ。および丁ａ。Ｏ、の出発原料を各
組成に応じて秤量し、めのうボールを備え、かつゴム内
張りしたボールミルを用いて、純水とともに、湿式混合
した。この混合物をフボールミルより取り出して乾燥し
てから、空気中において１２００℃で２時間仮焼した後
、ボールミルで湿式粉砕した。ボールミルから粉砕泥し
ようを取り出し、これを乾燥した後、圧力７００ｋｇ／
ｃｍ２で直径２５ｍｍの円板に成形し、それを１４６０
〜１３６０℃の範夕囲内の温度で２時間、空気中におい
て焼成して、下表に示す組成の誘電体磁器を得た。次に
、各磁器から、それぞれ直径５用型、厚さ２Ｍｍの寸法
の円板形磁器の試料を切出し、その共振周波数（ほぼ１
１Ｇ圧）と直径から誘電率（ε）を、また帯域反射法に
より無負荷Ｑ（Ｑｕ）を測定した。, MgO, Nb. O. and Ding a. The starting materials of O were weighed according to each composition and wet-mixed with pure water using a ball mill equipped with an agate ball and lined with rubber. This mixture was taken out from the ball mill, dried, calcined in air at 1200° C. for 2 hours, and then wet-pulverized in a ball mill. After taking out the crushed slurry from the ball mill and drying it, the pressure was 700 kg/
cm2 into a disc with a diameter of 25mm, and then
Firing was performed in air at a temperature within the range of ~1360°C for 2 hours to obtain dielectric porcelain having the composition shown in the table below. Next, a disc-shaped porcelain sample with a diameter of 5 mm and a thickness of 2 mm was cut out from each piece of porcelain, and its resonance frequency (approximately 1
The dielectric constant (ε) was measured from the diameter (1G pressure) and the no-load Q (Qu) by the band reflection method.
共振周波数の温度安定度（τｆ）については、温度槽に
各試料を入れ、−３０℃から＋７０℃の温度変化におけ
るトラツプ周波数の変化を測定して求めた。その結果を
下表に示す。表より明らかなように、本発明の誘電体磁
器材料は、マイクロ波領域において、無負荷Ｑが大きく
、誘電率が比較的大きく、さらに共振周波数の温度安定
度の改善された優れたものであることがわかる。The temperature stability (τf) of the resonance frequency was determined by placing each sample in a temperature bath and measuring the change in trap frequency as the temperature changed from -30°C to +70°C. The results are shown in the table below. As is clear from the table, the dielectric ceramic material of the present invention has a large no-load Q, a relatively large dielectric constant, and is excellent in the temperature stability of the resonance frequency in the microwave region. I understand that.
なお、本発明にかかる磁器は、低周波領域においても誘
電損失が小さく、かつ誘電率の温度変化が小さいので、
磁器コンデンサ用としても優れた材料であることを確認
した。In addition, the porcelain according to the present invention has small dielectric loss even in the low frequency range and small temperature change in dielectric constant, so
It was confirmed that it is an excellent material for ceramic capacitors.
Claims (1)
＿５・ｙＴａ＿２Ｏ＿５で表わされる組成において、０
．６≦ｘ≦２．０、０＜ｙ＜１の範囲内にある組成であ
ることを特徴とする誘電体磁器材料。1 General formula 3BaO・xMgO・(1-y)Nb_2O
In the composition represented by _5・yTa_2O_5, 0
．． A dielectric ceramic material characterized by having a composition within the range of 6≦x≦2.0 and 0<y<1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP52138573A JPS5951084B2 (en) | 1977-11-17 | 1977-11-17 | dielectric porcelain material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP52138573A JPS5951084B2 (en) | 1977-11-17 | 1977-11-17 | dielectric porcelain material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5471400A JPS5471400A (en) | 1979-06-07 |
| JPS5951084B2 true JPS5951084B2 (en) | 1984-12-12 |
Family
ID=15225280
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP52138573A Expired JPS5951084B2 (en) | 1977-11-17 | 1977-11-17 | dielectric porcelain material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5951084B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6163746A (en) * | 1984-09-06 | 1986-04-01 | 旭化成株式会社 | High speed weaving method by air jet loom |
| JPS61215740A (en) * | 1985-03-15 | 1986-09-25 | 津田駒工業株式会社 | Wefting control in shuttleless loom |
| JPS62268850A (en) * | 1986-03-25 | 1987-11-21 | ロイ・エレクトロテツクス・ソシエタ・ペル・アチオニ | Apparatus for attenuating oscillation and vibration of weft yarn of weft yarn feeder of air loom |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61107609A (en) * | 1984-10-30 | 1986-05-26 | 住友金属鉱山株式会社 | Manufacturing method of dielectric porcelain for high frequency use |
| CA1296177C (en) * | 1986-07-09 | 1992-02-25 | Kazutoshi Matsumoto | Dielectric ceramics |
| JP4654558B2 (en) * | 2001-11-28 | 2011-03-23 | Ｔｄｋ株式会社 | Dielectric material and method of manufacturing the dielectric material |
-
1977
- 1977-11-17 JP JP52138573A patent/JPS5951084B2/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6163746A (en) * | 1984-09-06 | 1986-04-01 | 旭化成株式会社 | High speed weaving method by air jet loom |
| JPS61215740A (en) * | 1985-03-15 | 1986-09-25 | 津田駒工業株式会社 | Wefting control in shuttleless loom |
| JPS62268850A (en) * | 1986-03-25 | 1987-11-21 | ロイ・エレクトロテツクス・ソシエタ・ペル・アチオニ | Apparatus for attenuating oscillation and vibration of weft yarn of weft yarn feeder of air loom |
| JPH103U (en) * | 1986-03-25 | 1998-01-06 | ロイ エレクトロテックス ソシエタ ペル アチオニ | A damping device for the oscillation and vibration of the weft of the weft supply device of the air-type loom |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5471400A (en) | 1979-06-07 |
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