JPS5923047B2 - dielectric resonator - Google Patents
dielectric resonatorInfo
- Publication number
- JPS5923047B2 JPS5923047B2 JP51136132A JP13613276A JPS5923047B2 JP S5923047 B2 JPS5923047 B2 JP S5923047B2 JP 51136132 A JP51136132 A JP 51136132A JP 13613276 A JP13613276 A JP 13613276A JP S5923047 B2 JPS5923047 B2 JP S5923047B2
- Authority
- JP
- Japan
- Prior art keywords
- dielectric
- porcelain
- dielectric resonator
- present
- 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、Ｎａ２Ｏ、Ｔａ２
Ｏ５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
器を提供しよラとするものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to dielectric resonators, particularly BaO, Na2O, Ta2
The present invention relates to a dielectric resonator composed of an O5 component, and provides a microwave dielectric resonator having a large dielectric constant ε, a large no-load Q, and excellent temperature stability τf of the resonant frequency. This is the case.
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、これらの誘電体材料
としては、ＢａＯ−ＴｉＯ２系磁器および、その−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して、実用上問題が多い。In recent years, as technology for integrating microwave circuits in particular has progressed, high dielectric constants,
The use of low-loss, low-cost dielectric ceramics to miniaturize the device is actively underway. Conventionally, these dielectric materials include BaO-TiO2-based porcelain, porcelain in which the - part 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 that changes with temperature. In many cases, a combination of dielectric porcelain and porcelain 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−ｙＮａ２０−２Ｔａ２Ｏ５で表わされる組成にお
いて、０．５９３≦ｘ≦０．７６２、０．０４≦ｙ≦０
．１３、０．１７４≦ｚ≦０．３２（ただしｘ＋ｙ＋ｚ
＝１）の範囲内にある磁器が、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 represented by a0-yNa20-2Ta2O5, 0.593≦x≦0.762, 0.04≦y≦0
．． 13, 0.174≦z≦0.32 (however, x+y+z
This is based on the discovery that porcelain in the range of =1) makes an excellent dielectric microwave resonator.
以下、実施例にもとづいて、本発明を説明する。The present invention will be explained below based on Examples.
まずＢａＣＯ３、Ｎａ２Ｃ０３およびＴａ２Ｏ５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で、アルコールとともに、
湿式混合した。この混合物をボールミルより取り出して
乾燥させてから、空気中において１２００℃で５時間仮
暁した後、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、それを乾燥させた後、圧力７
００に９／ｃｒＡで直径２５ｕの円板に成形し、それを
１４００〜１５５０℃の範囲内の温度で２時間、空気中
において焼成して、下表に示す組成の磁器を得た。次に
、各磁器から、それぞれ直径５ｎ、厚さ２露の寸法の円
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。共振周波数の温度安定度
τｆ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。ただし 傘比較例
Ｘ，ｙ，ｚはＸＢａＯ−ＹＮａ２Ｏ・
ＺＴａ２Ｏ５の組成比率を示す。First, the starting materials of BaCO3, Na2C03 and Ta2O5 are weighed according to their respective compositions, and then processed with alcohol in a ball mill equipped with an agate ball and lined with rubber.
Wet mixed. This mixture was taken out from the ball mill and dried, then suspended in the air at 1200° C. for 5 hours, and then wet-pulverized using a ball mill. After taking out the crushed slurry from the ball mill and drying it, the pressure was set to 7.
00 to 9/crA into a disc having a diameter of 25u, and fired in air at a temperature within the range of 1400 to 1550°C for 2 hours to obtain porcelain having the composition shown in the table below. Next, a disk-shaped porcelain sample with a diameter of 5n and a thickness of 2 dew was cut out from each piece of porcelain, and its resonance frequency (approximately 11G
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. The temperature stability τf of the resonant frequency is determined by placing each sample in a temperature bath and changing it from -30℃ to +70℃.
This was determined by measuring the change in trap frequency due to temperature change. The results are shown in the table below. However, Umbrella Comparative Examples X, y, and z show the composition ratio of XBaO-YNa2O/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
磁器が得られず、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 ceramic having sufficient mechanical strength to be used as a dielectric resonator could not be obtained, and therefore was 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)
成において、０．５９３≦ｘ≦０．７６２、０．０４≦
ｙ≦０．１３、０．１７４≦ｚ≦０．３２（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・yNa_2O_5, 0.593≦x≦0.762, 0.04≦
y≦0.13, 0.174≦z≦0.32 (however, x+
A dielectric resonator characterized in that a dielectric ceramic having a composition within the range of y+z=1) is used.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP51136132A JPS5923047B2 (en) | 1976-11-11 | 1976-11-11 | dielectric resonator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP51136132A JPS5923047B2 (en) | 1976-11-11 | 1976-11-11 | dielectric resonator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5360543A JPS5360543A (en) | 1978-05-31 |
| JPS5923047B2 true JPS5923047B2 (en) | 1984-05-30 |
Family
ID=15168044
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP51136132A Expired JPS5923047B2 (en) | 1976-11-11 | 1976-11-11 | dielectric resonator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5923047B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61106453A (en) * | 1984-10-26 | 1986-05-24 | ソニー株式会社 | Ceramic composition |
| ES2576581T3 (en) | 2007-02-13 | 2016-07-08 | Jfe Steel Corporation | Method of manufacturing a steel pipe by seam welding and its manufacturing apparatus |
| JP4935703B2 (en) * | 2007-02-27 | 2012-05-23 | Ｊｆｅスチール株式会社 | Method for producing ERW steel pipe with good weld toughness |
-
1976
- 1976-11-11 JP JP51136132A patent/JPS5923047B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5360543A (en) | 1978-05-31 |
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