JPS5948485B2 - dielectric resonator - Google Patents
dielectric resonatorInfo
- Publication number
- JPS5948485B2 JPS5948485B2 JP51110276A JP11027676A JPS5948485B2 JP S5948485 B2 JPS5948485 B2 JP S5948485B2 JP 51110276 A JP51110276 A JP 51110276A JP 11027676 A JP11027676 A JP 11027676A JP S5948485 B2 JPS5948485 B2 JP S5948485B2
- Authority
- JP
- Japan
- Prior art keywords
- dielectric
- porcelain
- dielectric resonator
- temperature
- composition
- 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
- 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、Ｌｉ。[Detailed description of the invention] The present invention relates to dielectric resonators, particularly BaO, Li.
Ｏ、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）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（τ、）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, Nb. O. This dielectric resonator for microwaves has a large dielectric constant (ε), a large no-load Q, and excellent temperature stability of the resonance frequency (τ,). This is what we are trying to provide.
Conventionally, in the microwave region, dielectric materials have been applied to impedance matching of microwave circuits, dielectric resonators, and the like.
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ｊ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−ＴｉＯ。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、共振周波数の安定度が
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, it has become possible to use dielectric ceramics with high dielectric constant, low loss, and low cost to stabilize the frequency of oscillators and make them smaller. It is being actively pursued. Conventionally, these dielectric materials include BaO-TiO. porcelain, a part of which is replaced with other elements, and a combination of TiO2, which has a negative dielectric constant that changes with temperature, and dielectric porcelain, which has a positive dielectric constant that changes with temperature. There are many cases. However, these have many practical problems, such as large dielectric loss, large variations in temperature change in dielectric constant, and too high stability of resonance frequency.
Ｊ 本発明はこれらの欠点を除いたものであり、一般式
ｘＢａＯ−ｙＬｉ。J The present invention eliminates these drawbacks and has the general formula xBaO-yLi.
Ｏ−２Ｎｂ。Ｏ、で表わされる組成において、０．５９
３≦ｘ≦０．７６２、０．０４≦ｙ≦０．１３、０．１
７４≦ｚ≦０．３２（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。以下
、実施例にもとづいて、本発明を説明する。O-2Nb. In the composition represented by O, 0.59
3≦x≦0.762, 0.04≦y≦0.13, 0.1
This invention is based on the discovery that porcelain having a composition within the range of 74≦z≦0.32 (where x+y+z=1) becomes an excellent dielectric microwave resonator. Hereinafter, the present invention will be explained based on Examples.
まずＢａＣＯ。、Ｌｉ。Ｏ、およびＮｂ。Ｏ。の出発原
料を各組成に応じて秤量し、めのうボールを備フえ、か
つゴム内張りしたボールミルで、エチルアルコールとと
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１２００℃で５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７００
ｋｇ／ｃｍ２で直径２５ｍｍの円板丁に成形し、それを
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５ｍｍ，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）｝を測定した。First, BaCO. , Li. O, and Nb. O. The starting materials were weighed according to each composition and wet mixed with ethyl alcohol in a ball mill equipped with an agate ball and lined with rubber. This mixture was dried, calcined in air at 1200° C. for 5 hours, and then wet-pulverized in the ball mill. After drying it, pressure 700
kg/cm 2 into a disc with a diameter of 25 mm, and fired 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 5 mm and a thickness of 2 mm.
Cut out a disk-shaped porcelain sample with dimensions of , and find its resonant frequency (
The dielectric constant (ε) was measured from the diameter (approximately 11 GHz) and the unloaded Q (Qu)} 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℃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
Ｘ，ｙ，ｚはＸＢａＯ−ＹＬｉ２Ｏ・ＺＮｂ２Ｏ５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 +70°C. The results are shown in the table below. However, *Comparative Examples X, y, and z indicate the composition ratio of XBaO-YLi2O.ZNb2O5.
表より明らかなように、本発明の誘電体磁器は上記３成
分特にＬｉ２Ｏを用いることにより、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, by using the above three components, especially Li2O, the dielectric ceramic of the present invention has a large no-load Q and a relatively large dielectric constant in the microwave region, and also has a low temperature stability of the resonance frequency. It can be seen that it is an improved and excellent product.
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持つ
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 it 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)
で表わされる組成において、０．５９３≦ｘ≦０．７６
２、０．０４≦ｙ≦０．１３、０．１７４≦ｚ≦０．３
２（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 General formula xBaO・yLi_2O・zNb_2O_5
In the composition represented by 0.593≦x≦0.76
2, 0.04≦y≦0.13, 0.174≦z≦0.3
1. A dielectric resonator characterized in that a dielectric ceramic having a composition within the range of 2 (x+y+z=1) is used.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP51110276A JPS5948485B2 (en) | 1976-09-14 | 1976-09-14 | dielectric resonator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP51110276A JPS5948485B2 (en) | 1976-09-14 | 1976-09-14 | dielectric resonator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5335455A JPS5335455A (en) | 1978-04-01 |
| JPS5948485B2 true JPS5948485B2 (en) | 1984-11-27 |
Family
ID=14531573
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP51110276A Expired JPS5948485B2 (en) | 1976-09-14 | 1976-09-14 | dielectric resonator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5948485B2 (en) |
-
1976
- 1976-09-14 JP JP51110276A patent/JPS5948485B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5335455A (en) | 1978-04-01 |
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