JPS5948486B2 - dielectric resonator - Google Patents
dielectric resonatorInfo
- Publication number
- JPS5948486B2 JPS5948486B2 JP51110288A JP11028876A JPS5948486B2 JP S5948486 B2 JPS5948486 B2 JP S5948486B2 JP 51110288 A JP51110288 A JP 51110288A JP 11028876 A JP11028876 A JP 11028876A JP S5948486 B2 JPS5948486 B2 JP S5948486B2
- 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
- Control Of Motors That Do Not Use Commutators (AREA)
- Compositions Of Oxide Ceramics (AREA)
- Ceramic Capacitors (AREA)
- Inorganic Insulating Materials (AREA)
Description
【発明の詳細な説明】
本発明は誘電体共振器材料、特にＢａＯ、Ｎａ２Ｏ、Ｎ
ｂ２０。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to dielectric resonator materials, particularly BaO, Na2O, N
b20.
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＆畏女足度（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。It concerns a dielectric resonator composed of the components of
It is an object of the present invention to provide a dielectric resonator for microwaves that has a large dielectric constant (ε), a large no-load Q, and an excellent resonance frequency (τ). 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フ化する
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−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ＴｉＯ。と正の誘電率の温度変化をもつ誘
電体磁器とを組合せ、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. system porcelain, porcelain whose part is replaced with other elements, and TiO whose dielectric constant changes negatively with temperature. It is often used in combination with dielectric porcelain, which has a positive dielectric constant that changes with temperature. 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.
本発明はこれらの欠点を除いたものであり、一般式ｘＢ
ａＯ−ｙＮａ。The present invention eliminates these drawbacks, and the general formula xB
aO-yNa.
Ｏ−２Ｎｂ、０。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, 0. In the composition represented by 0.59
3≦x≦0.762, 0.04≦y≦0.13, 0.1
This 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. below,
The present invention will be explained based on examples.
まずＢａＣＯ３、Ｎａ。First, BaCO3, Na.
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７００ｋｇ／ｃｍ２で直径２５
ｍｍの円板に成形し、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２［ＮＩ］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（Ｑ
ｕ）を測定した。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, a pressure of 700 kg/cm2 was applied to a diameter of 25 mm.
It was molded into a disk of mm in diameter 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, a disk-shaped porcelain sample with a diameter of 5 mm and a thickness of 2 [NI] was cut out from each piece of porcelain, and the permittivity (ε) was determined from the resonance frequency (approximately 11 GHz) and diameter, and the zero value was determined using the band reflection method. Load Q (Q
u) was measured.
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−ＹＮａ２Ｏ●
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-YNa2O● ZNb2O5.
表より明らかなように、本発明の誘電体共振器は、上記
３成分特にＮａ２Ｏ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 Na2O, the dielectric resonator of the present invention has a large no-load Q in the microwave region, a relatively large dielectric constant, and temperature stability of the resonant frequency. It can be seen that it is an excellent product with improved quality.
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)
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・yNa_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 |
|---|---|---|---|
| JP51110288A JPS5948486B2 (en) | 1976-09-14 | 1976-09-14 | dielectric resonator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP51110288A JPS5948486B2 (en) | 1976-09-14 | 1976-09-14 | dielectric resonator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5335456A JPS5335456A (en) | 1978-04-01 |
| JPS5948486B2 true JPS5948486B2 (en) | 1984-11-27 |
Family
ID=14531889
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP51110288A Expired JPS5948486B2 (en) | 1976-09-14 | 1976-09-14 | dielectric resonator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5948486B2 (en) |
-
1976
- 1976-09-14 JP JP51110288A patent/JPS5948486B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5335456A (en) | 1978-04-01 |
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