JPS5948483B2 - dielectric resonator - Google Patents
dielectric resonatorInfo
- Publication number
- JPS5948483B2 JPS5948483B2 JP51110274A JP11027476A JPS5948483B2 JP S5948483 B2 JPS5948483 B2 JP S5948483B2 JP 51110274 A JP51110274 A JP 51110274A JP 11027476 A JP11027476 A JP 11027476A JP S5948483 B2 JPS5948483 B2 JP S5948483B2
- Authority
- JP
- Japan
- Prior art keywords
- dielectric
- porcelain
- dielectric resonator
- temperature
- dielectric constant
- 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、ＺｎＯ、Ｎｂ。[Detailed description of the invention] The present invention relates to dielectric resonators, particularly BaO, ZnO, Nb.
Ｏ。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）力伏きく、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。従来から、
マイクロ波領域において、誘電体は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応用されてき
ている。O. This is a dielectric resonator for microwaves that has a low dielectric constant (ε), a large no-load Q, and excellent temperature stability (τf) of the resonant frequency. This is what we are trying to provide. Traditionally,
In the microwave region, dielectrics have been applied to impedance matching of microwave circuits, dielectric resonators, etc.
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、これらの誘電体と
しては、ＢａＯ−ＴｉＯ２系磁器、およびその一部を他
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、共振周波数の安定度が大
きすぎたりして、実Ｊ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 materials include BaO-TiO2-based porcelain, porcelain partially substituted with other elements, and TiO whose dielectric constant changes negatively with temperature. In many cases, a combination of dielectric ceramic and dielectric ceramic having a positive dielectric constant that changes with temperature is used. but,
These have many problems in practical use, such as large dielectric loss, large variations in temperature change in dielectric constant, and too high 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−ｙＺｎＯ−２Ｎｂ。The present invention eliminates these drawbacks, and the general formula xB
a0-yZnO-2Nb.
Ｏ。で表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二１）の範囲内にある組ｑ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。以下、実施例にもとづいて、本発明を
説明する。まずＢａＣＯ３、ＺｎＯ、およびＮｂ２Ｏ５
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、θかつゴム内張りしたボールミルで、純水とともに
湿式混合した。この混合物を乾燥させてから、空気中に
おいて１０００℃で２時間仮焼した後、前記ボールミル
で湿式粉砕した。それを乾燥させた後、圧力７００ｋｇ
／Ｃｌｌ］■で直径２５ｍｍの円板に成形し、それを５
１４６０〜１３６０℃の範囲内の温度で２時間、空気中
において焼成をして、下表に示す組成の磁器を得た。そ
れから、各磁器から、それぞれ直径５０１ｍ、厚さ２ｍ
ｍ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１１ＧＨｚ）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）３を測定した。O. In the composition represented by 0.5≦x≦0.75,
0.1≦y≦0.3, 0.1≦z≦0.3 (however, x+
This invention is based on the discovery that porcelain with a composition q within the range of y+z21) becomes an excellent dielectric microwave resonator. Hereinafter, the present invention will be explained based on Examples. First, BaCO3, ZnO, and Nb2O5
The starting materials were weighed according to each composition and wet-mixed with pure water in a ball mill equipped with an agate ball and lined with rubber at θ. This mixture was dried, calcined in air at 1000° C. for 2 hours, and then wet-pulverized in the ball mill. After drying it, the pressure is 700kg
/Cll] ■ to form a disc with a diameter of 25 mm, and then
Firing was performed in air at a temperature within the range of 1460 to 1360°C for 2 hours to obtain porcelain having the composition shown in the table below. Then, from each piece of porcelain, each has a diameter of 501 m and a thickness of 2 m.
A disk-shaped porcelain sample with dimensions of m was cut out, and its dielectric constant (ε) was measured from its resonance frequency (approximately 11 GHz) and diameter, and its unloaded Q (Qu)3 was measured by 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℃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、※比較較例
表より明らかなように、本発明の誘電体磁器は上記組成
、特にＺｎＯを用いることにより、マイク口波領域にお
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. However, as is clear from the comparison table, the dielectric ceramic of the present invention has a large no-load Q in the microphone mouth wave region, a relatively large dielectric constant, and It can be seen that the temperature stability of the resonance frequency is improved.
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。
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。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.
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・yZnO・zNb_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 |
|---|---|---|---|
| JP51110274A JPS5948483B2 (en) | 1976-09-14 | 1976-09-14 | dielectric resonator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP51110274A JPS5948483B2 (en) | 1976-09-14 | 1976-09-14 | dielectric resonator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5335453A JPS5335453A (en) | 1978-04-01 |
| JPS5948483B2 true JPS5948483B2 (en) | 1984-11-27 |
Family
ID=14531520
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP51110274A Expired JPS5948483B2 (en) | 1976-09-14 | 1976-09-14 | dielectric resonator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5948483B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59228310A (en) * | 1983-06-10 | 1984-12-21 | 富士電気化学株式会社 | Microwave dielectric porcelain composition |
-
1976
- 1976-09-14 JP JP51110274A patent/JPS5948483B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5335453A (en) | 1978-04-01 |
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