JPS5948482B2 - dielectric resonator - Google Patents
dielectric resonatorInfo
- Publication number
- JPS5948482B2 JPS5948482B2 JP51110245A JP11024576A JPS5948482B2 JP S5948482 B2 JPS5948482 B2 JP S5948482B2 JP 51110245 A JP51110245 A JP 51110245A JP 11024576 A JP11024576 A JP 11024576A JP S5948482 B2 JPS5948482 B2 JP S5948482B2
- Authority
- JP
- Japan
- Prior art keywords
- dielectric
- dielectric resonator
- porcelain
- temperature
- present
- 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
- Inorganic Insulating Materials (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
- Compositions Of Oxide Ceramics (AREA)
- Ceramic Capacitors (AREA)
Description
【発明の詳細な説明】 本発明は誘電体共振器、特にＢａＯ、ＭｇＯ、。[Detailed description of the invention] The present invention relates to dielectric resonators, particularly BaO, MgO.
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、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。Nb. This relates to a dielectric resonator composed of components O, which has a large dielectric constant (ε), a large no-load Q,
The present invention also aims to provide a dielectric resonator for microwaves that has excellent temperature stability (τ,) of the resonant frequency. 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−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、あるいは共振周波数
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, 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-TiO. Use porcelain based on TiO2, 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, or 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−ｙＭｇＯ−２Ｎｂ。The present invention eliminates these drawbacks, and the general formula xB
a0-yMgO-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＝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. In the composition represented by 0.5≦X≦0.75
, 0.1≦y≦0.3, 0.1≦z≦0.3 (where x
This is based on the discovery that porcelain having a composition within the range of +y+z=1) can be an excellent dielectric microwave resonator. Hereinafter, the present invention will be explained based on Examples.
まずＢａＣＯ３、ＭｇＯ、およびＮｂ２Ｏ。First, BaCO3, MgO, and Nb2O.
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、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
／ｃｍ・で直径２５ｍｍの円板に成形し、それを１４６
０〜１３６０℃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１
１ＧＨｚ）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。The starting materials are weighed according to each composition, and mixed with pure water in a ball mill equipped with agate balls and lined with rubber.
Wet mixed. This mixture was dried, calcined in air at 1200° C. for 5 hours, and then wet-pulverized in the ball mill. After drying it, the pressure is 700kg
/cm・ into a disc with a diameter of 25 mm, and then
Firing was performed in air at a temperature within the range of 0 to 1360°C for 2 hours to obtain porcelain having the composition shown in the table below. Then, a disk-shaped porcelain sample with dimensions of 5 mm in diameter and 2 mm in thickness was cut out from each piece of porcelain, and its resonant frequency (approximately 1
The dielectric constant (ε) was measured from the diameter (1 GHz) and the diameter, and the unloaded Q (Qu)- was measured by the band reflection method.
共振周波数の温度安定度（τ，）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、本発明の誘電体共振器は、上記
３成分、特にＭｇＯ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一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 (τ,) 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 resonator of the present invention has a large no-load Q and a relatively large dielectric constant in the microwave region by using the above three components, especially MgO. Furthermore, it can be seen that the one-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機的強度をもつ
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)
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・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 |
|---|---|---|---|
| JP51110245A JPS5948482B2 (en) | 1976-09-13 | 1976-09-13 | dielectric resonator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP51110245A JPS5948482B2 (en) | 1976-09-13 | 1976-09-13 | dielectric resonator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5335345A JPS5335345A (en) | 1978-04-01 |
| JPS5948482B2 true JPS5948482B2 (en) | 1984-11-27 |
Family
ID=14530780
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP51110245A Expired JPS5948482B2 (en) | 1976-09-13 | 1976-09-13 | dielectric resonator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5948482B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55154006A (en) * | 1979-05-17 | 1980-12-01 | Matsushita Electric Ind Co Ltd | Dielectric porcelain material |
| JP4524411B2 (en) * | 2001-06-20 | 2010-08-18 | 日本特殊陶業株式会社 | Dielectric porcelain composition |
-
1976
- 1976-09-13 JP JP51110245A patent/JPS5948482B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5335345A (en) | 1978-04-01 |
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