JPS5923048B2 - dielectric resonator - Google Patents
dielectric resonatorInfo
- Publication number
- JPS5923048B2 JPS5923048B2 JP51136133A JP13613376A JPS5923048B2 JP S5923048 B2 JPS5923048 B2 JP S5923048B2 JP 51136133 A JP51136133 A JP 51136133A JP 13613376 A JP13613376 A JP 13613376A JP S5923048 B2 JPS5923048 B2 JP S5923048B2
- Authority
- JP
- Japan
- Prior art keywords
- dielectric
- porcelain
- dielectric resonator
- composition
- temperature
- 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
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P7/00—Resonators of the waveguide type
- H01P7/10—Dielectric resonators
Landscapes
- Compositions Of Oxide Ceramics (AREA)
- Ceramic Capacitors (AREA)
- Inorganic Insulating Materials (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
Description
【発明の詳細な説明】
本発明は誘電体共振器、特にＢａＯ、ＭｇＯ、Ｔａ２Ｏ
５の成分で構成される誘電体共振器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、かつ共振周波
数の温度安定度τｆに優れたマイクロ波用誘電体共振器
を提供しようとするものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to dielectric resonators, particularly BaO, MgO, Ta2O
The present invention relates to a dielectric resonator composed of five components, and attempts to provide a dielectric resonator for microwaves having a large dielectric constant ε, a large no-load Q, and excellent temperature stability τf of the resonant frequency. It is something to do.
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。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小形化するこ
とが積極的に進められている。従来、これらの誘電体素
子としては、ＢａＯ−ＴｉＯ２系磁器およノび、その一
部を他の元素で置換した磁器、さらには誘電率が負の温
度変化をもっＴｉＯ２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ったり、あるいは共振周
波数の温度安定度が大きすぎたりして、実用上問題が多
い。In recent years, especially as the integration technology of microwave circuits has progressed, there has been an active effort to use dielectric ceramics with high dielectric constant, low loss, and low cost to stabilize the frequency of oscillators and to miniaturize them. progress is being made. Conventionally, these dielectric elements have been made of BaO-TiO2-based porcelain, porcelain in which a part of BaO-TiO2 is replaced with other elements, and TiO2, which has a negative dielectric constant that changes with temperature, and TiO2, which has a positive dielectric constant. In many cases, a combination of dielectric porcelain and dielectric material that changes temperature is used. However, these have many problems in practical use, such as large dielectric loss, large variations in temperature change in dielectric constant, or too large temperature stability of resonance frequency.
本発明はこれらの欠点を除いたものであり、一般式ｘＢ
ａ０−ｙＭｇ０−２Ｔａ２Ｏ５で表わされる組成ｏにお
いて、０．５≦ｘ≦０．７５、０．１≦ｙ≦０．３、０
．１≦ｚ≦０．３（ただしｘ＋ｙ＋ｚ＝１）の範囲内に
ある組成の磁器が、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。The present invention eliminates these drawbacks, and the general formula xB
In the composition o represented by a0-yMg0-2Ta2O5, 0.5≦x≦0.75, 0.1≦y≦0.3, 0
．． This is based on the discovery that porcelain having a composition within the range of 1≦z≦0.3 (where x+y+z=1) becomes an excellent dielectric microwave resonator.
５ 以下、実施例にもとづいて、本発明を説明する。5 Hereinafter, the present invention will be explained based on Examples.
まずＢａＣＯ３、ＭｇＯ、およびＴａ２Ｏ５の出発原料
を各組成に応じて秤量し、めのラボールを備え、かつゴ
ム張りしたボールミルで、純水とともに、湿式混合した
。この混合物をボールミルから取り’ｏ出して乾燥させ
てから、空気中において１２００’Ｃで５時間仮焼した
後、ボールミルで湿式粉砕した。粉砕泥しようをボール
ミルから取り出して、それを乾燥させた後、圧力７００
に９／Ｃｄで直径２５ｍｍの円板に成形し、それを１５
５０〜１４００’Ｃの１５範囲内の温度で２時間、空気
中において焼成をして、下表に示す組成の誘電体磁器を
得た。。次に、上述のようにして得た誘電体磁器から、
、ハー −それぞれ直径５ｍ！、厚さ２ｍ１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１１Ｇ
Ｈｚ）と直径とから誘電率εを、また帯域反射法により
無負荷Ｑ（Ｑｕ）を測定した。First, starting materials of BaCO3, MgO, and Ta2O5 were weighed according to each composition, and wet-mixed with pure water in a rubber-lined ball mill equipped with a mesh rubber ball. This mixture was taken out from the ball mill, dried, calcined in air at 1200'C for 5 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 set to 700
9/Cd to form a disc with a diameter of 25 mm, and then
Firing was performed in air at a temperature within the range of 50 to 1400'C for 2 hours to obtain dielectric porcelain having the composition shown in the table below. . Next, from the dielectric porcelain obtained as described above,
, Her - each 5m in diameter! A disk-shaped porcelain sample with a thickness of 2 m1 was cut out, and its resonant frequency (approximately 11G) was cut out.
The dielectric constant ε was measured from the diameter (Hz) and the diameter, and the no-load Q (Qu) was measured by the band reflection method.
共振周波数の温度安定度τｆは、温度槽に各試料を入れ
、−３０′Ｃ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
。ただし 傘比較例Ｘ，ｙ，ｚはＸＢａＯ●ＹＭｇＯ・
ＺＴａ２Ｏ５の組成比率を示す。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 +70C. The results are shown in the table below. However, Umbrella Comparative Examples X, y, and z show the composition ratio of XBaO●YMgO・ZTa2O5.
表より明らかなように、本発明の誘電体共振器は、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。As is clear from the table, the dielectric resonator of the present invention has a large no-load Q, a relatively large dielectric constant, and is excellent in the temperature stability of the resonant frequency in the microwave region. I understand that.
本発明の範囲外の組成では、磁器への焼結がよくなく、
誘電体共振器として利用するに十分な機械的強度をもつ
機器が得られず、そのため、本発明の範囲から除いた。If the composition is outside the scope of the present invention, sintering into porcelain will not be good;
A device with sufficient mechanical strength to be used as a dielectric resonator could not be obtained, and was therefore excluded from the scope of the present invention.
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)
わされる組成において、０．５≦ｘ≦０．７５、０．１
≦ｙ≦０．３、０．１≦ｚ≦０．３（ただしｘ＋ｙ＋ｚ
＝１）の範囲内にある組成の誘電体磁器を使用したこと
を特徴とする誘電体共振器。1 In the composition represented by the general formula xBaO・yMgO・zTa_2O_5, 0.5≦x≦0.75, 0.1
≦y≦0.3, 0.1≦z≦0.3 (however, x+y+z
A dielectric resonator characterized in that a dielectric ceramic having a composition within the range of =1) is used.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP51136133A JPS5923048B2 (en) | 1976-11-11 | 1976-11-11 | dielectric resonator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP51136133A JPS5923048B2 (en) | 1976-11-11 | 1976-11-11 | dielectric resonator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5360544A JPS5360544A (en) | 1978-05-31 |
| JPS5923048B2 true JPS5923048B2 (en) | 1984-05-30 |
Family
ID=15168067
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP51136133A Expired JPS5923048B2 (en) | 1976-11-11 | 1976-11-11 | dielectric resonator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5923048B2 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59224005A (en) * | 1983-06-01 | 1984-12-15 | 松下電器産業株式会社 | Dielectric porcelain composition |
| JPS60105107A (en) * | 1983-11-11 | 1985-06-10 | 株式会社村田製作所 | High frequency dielectric porcelain composition |
| JPS60124305A (en) * | 1983-12-06 | 1985-07-03 | 株式会社村田製作所 | High frequency dielectric porcelain composition |
| DE3444340A1 (en) * | 1983-12-06 | 1985-06-13 | Murata Manufacturing Co., Ltd., Nagaokakyo, Kyoto | DIELECTRIC CERAMIC COMPOSITION FOR MICROWAVE FREQUENCIES |
| 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 |
| GB2184432B (en) * | 1985-10-18 | 1989-10-18 | Sumitomo Metal Mining Co | Dielectric ceramic |
| US5246898A (en) * | 1990-04-19 | 1993-09-21 | Matsushita Electric Industrial Co., Ltd. | Dielectric ceramics |
-
1976
- 1976-11-11 JP JP51136133A patent/JPS5923048B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5360544A (en) | 1978-05-31 |
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