JPS6340212A - Dielectric ceramic composition for microwave - Google Patents
Dielectric ceramic composition for microwaveInfo
- Publication number
- JPS6340212A JPS6340212A JP61183506A JP18350686A JPS6340212A JP S6340212 A JPS6340212 A JP S6340212A JP 61183506 A JP61183506 A JP 61183506A JP 18350686 A JP18350686 A JP 18350686A JP S6340212 A JPS6340212 A JP S6340212A
- Authority
- JP
- Japan
- Prior art keywords
- dielectric
- weight
- microwave
- ceramic composition
- dielectric ceramic
- 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.)
- Granted
Links
- 239000000203 mixture Substances 0.000 title claims description 16
- 239000000919 ceramic Substances 0.000 title claims description 9
- 239000003989 dielectric material Substances 0.000 description 14
- ZKATWMILCYLAPD-UHFFFAOYSA-N niobium pentoxide Chemical compound O=[Nb](=O)O[Nb](=O)=O ZKATWMILCYLAPD-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Compositions Of Oxide Ceramics (AREA)
- Inorganic Insulating Materials (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、マイクロ波用誘電体磁器組成物に係り、特に
マイクロ波フィルタ、ＬＮＢ用○ＳＣ（発振器）、デュ
プレクサ、ＶＣＯ（電圧制御発振器）等のマイクロ波用
回路の誘電体磁器材料に好適な組成物に関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a dielectric ceramic composition for microwave use, and in particular to a microwave filter, an LNB ○SC (oscillator), a duplexer, and a VCO (voltage controlled oscillator). The present invention relates to a composition suitable for dielectric ceramic materials for microwave circuits such as the above.
（従来の技術〕
誘電体材料は、従来から衛星放送受信用の発振器等のマ
イクロ波用回路に広く応用されてきた。(Prior Art) Dielectric materials have been widely applied to microwave circuits such as oscillators for satellite broadcast reception.
近年、この傾向はますます促進され、周波数帯域も低周
波数頭域、準ミリ波領域、ミリ波領域と広がり、より高
性能な誘電体材料が要求されている。従来、−船釣な誘
電体材料として、Ｂａ０−Ｔ ｉ Ｏｚ系のものが使用
されている。In recent years, this trend has been accelerated more and more, and the frequency band has expanded from the low frequency range to the sub-millimeter wave range and the millimeter wave range, and higher performance dielectric materials are required. Conventionally, Ba0-TiOz-based dielectric materials have been used as dielectric materials.
〔発明が解決しようとする問題点）
ＢａＯ−ＴｉＯ□系の誘電体材料において、ＢａＯとＴ
ｉｅ、の組成比を適当に選定し、またはＢａＯおよびＴ
ｉｅ、の組成に対し、適当な添加剤を用いることにより
誘電体材料の温度係数を自由にコントロールすることは
可能である。しかしながら、上記のような従来のＢａＯ
−Ｔｉ１ｔ系の誘電体材料はその焼結体が還元されやす
（、このため誘電損失が大きくなり、温度特性の直線性
が充分に確保されない等の問題点を有していた。[Problems to be solved by the invention] In the BaO-TiO□-based dielectric material, BaO and T
ie, by appropriately selecting the composition ratio of BaO and T.
It is possible to freely control the temperature coefficient of the dielectric material by using appropriate additives for the composition of ie. However, conventional BaO as mentioned above
-Ti1t-based dielectric materials have problems in that their sintered bodies are easily reduced (therefore, dielectric loss increases and linearity of temperature characteristics is not sufficiently ensured).
本発明の目的は、上記した従来技術の問題点を解消し、
誘電率が高く、かつ誘電損失が小さく、しかも誘電率の
温度係数が小さく、所定の温度範囲で温度係数が一定で
あるマイクロ波用誘電体磁器組成物を提供することにあ
る。The purpose of the present invention is to solve the problems of the prior art described above,
It is an object of the present invention to provide a dielectric ceramic composition for microwave use, which has a high dielectric constant, a small dielectric loss, a small temperature coefficient of the dielectric constant, and a constant temperature coefficient within a predetermined temperature range.
上記目的は、
Ｂａ０（１８〜２２モル％）、Ｔｉ０ｚ （７８〜８
２モル％）からなる主成分となる組成中に、Ｎｂ、Ｏｓ
（０，５〜３．５重量％）とＭｎ０＝（０，０１〜
１．０重量％）が添加された組成からなる誘電体磁器組
成物、および
ＢａＯ（１８〜２２モル％）、Ｔｉ１ｔ （’７８〜
８２モル％）からなる主成分となる組成中に、Ｎｂｔ
Ｏｓ （０，５〜３．５重量％）とＭｎＯ。For the above purpose, Ba0 (18-22 mol%), Ti0z (78-8
2 mol%), Nb, Os
(0.5~3.5% by weight) and Mn0=(0.01~
1.0% by weight), and BaO (18-22 mol%), Tilt ('78-
Nbt
Os (0.5-3.5% by weight) and MnO.
（０，０１〜１．０重量％）とＺｎ０（１７重量％以下
）が添加された組成からなる誘電体磁器組成物によって
達成される。This is achieved by a dielectric ceramic composition containing Zn0 (0.01 to 1.0% by weight) and Zn0 (17% by weight or less).
本発明のマイクロ波用誘電体磁器組成物において、Ｂａ
Ｏ（１８〜２２モル％）とＴｉＯ２（７８〜８２モル％
）とを主成分とする。ＢａＯおよびＴ ｉ Ｏ２が上記
した範囲外の場合、いずれも誘電を置火が大きくなり、
誘電体材料としての特性を測定することが不可能となる
。In the microwave dielectric ceramic composition of the present invention, Ba
O (18-22 mol%) and TiO2 (78-82 mol%
) is the main component. When BaO and T i O2 are outside the above range, the dielectric ignition becomes large,
It becomes impossible to measure the properties of the dielectric material.
本発明は、上記した成分を主成分とするとともにＮｂ２
Ｏ，とＭｎ０ｚとを添加した組成からなる。添加される
ＮｂｚＯｓＯ量は０．５〜３．５重量％である。Ｎｂｚ
Ｏｓの添加は、誘電体材料の温度係数を＋７０℃〜−５
０℃の範囲で一定に保つことにあるが、添加量が０．５
重量％よりも少ないと、その効果が少なく、一方添加量
が３．５重量％を越えると、温度係数を一定に保つこと
が困難となり、さらに無負荷Ｑ （Ｑｕ）が低下する。The present invention has the above-mentioned components as main components, and Nb2
It has a composition in which O, and Mn0z are added. The amount of NbzOsO added is 0.5 to 3.5% by weight. Nbz
The addition of Os increases the temperature coefficient of the dielectric material from +70°C to -5
The purpose is to keep the temperature constant within the range of 0℃, but the amount added is 0.5
If the amount is less than 3.5% by weight, the effect will be small, while if the amount added exceeds 3.5% by weight, it will be difficult to keep the temperature coefficient constant and the no-load Q (Qu) will further decrease.
Ｍ ｎ Ｏｚの添加量は０．０１−１．０重量％である
＊ Ｍ ｎ Ｏ□の添加は、誘電体材料の誘電損失を低
減することにあり、その添加量が０．０１重量％よりも
少ないと、誘電損失低減の効果が低く、一方、添加量が
１．０重量％を越えると逆に誘電損失が大きくなる。The amount of MnOz added is 0.01-1.0% by weight.* The purpose of adding MnO□ is to reduce the dielectric loss of the dielectric material, and the amount of MnOz added is 0.01-1.0% by weight. If the amount is too small, the effect of reducing dielectric loss will be low, while if the amount added exceeds 1.0% by weight, the dielectric loss will increase.
本発明において、ＺｎＯを含有する誘電体磁器組成物の
場合、ＺｎＯは誘電率（ｇ ｒ）を３０以上に維持した
まま、誘電体材料の温度係数（τ、。）にして正から負
まで変化させることができる。この場合、ＺｎＯの添加
量が１７重量％を越えると、温度係数（τ、。）が負の
側で大きくなりすぎ、さらに誘電率（εｒ）が小さくな
る。In the present invention, in the case of a dielectric ceramic composition containing ZnO, ZnO changes the temperature coefficient (τ, .) of the dielectric material from positive to negative while maintaining the dielectric constant (gr) at 30 or more. can be done. In this case, if the amount of ZnO added exceeds 17% by weight, the temperature coefficient (τ, .) becomes too large on the negative side and the dielectric constant (εr) further decreases.
ＢａＣＯ５、Ｔｉ０ｉ 、ＺｎＯ，Ｎｂ、Ｏｓ、および
ＭｎＯ□の各原料を第１表に示す各組成となるように秤
量し、湿式混合後、濾過乾燥し、１０００℃の温度で仮
焼した。この仮焼物を粉砕、造粒、成形後、１２００〜
１３５０℃の温度下で１０時間大気中で焼成した試料を
約１３ＧＨ，の周波数で測定した。その結果を第１表に
示す。Raw materials BaCO5, TiOi, ZnO, Nb, Os, and MnO□ were weighed to have the respective compositions shown in Table 1, wet mixed, filtered and dried, and calcined at a temperature of 1000°C. After crushing, granulating and molding this calcined product, 1200 ~
A sample fired in the air at a temperature of 1350° C. for 10 hours was measured at a frequency of about 13 GH. The results are shown in Table 1.
なお原料としてＢａＯの代わりにＢ ａ ＣＯｓを使用
したが、ＢａＯ等の酸化物よりも３ａＣＯｚ等の炭酸塩
の方が化学的に安定であり、かつ仮焼の過程において、
Ｂ ａ ＣＯｘはＢａＯとＣＯ□とに分解されるので誘
電体材料の特性に影響はない。Although B a COs was used instead of BaO as a raw material, carbonates such as 3aCOz are chemically more stable than oxides such as BaO, and in the calcination process,
Since B a COx is decomposed into BaO and CO□, it does not affect the properties of the dielectric material.
また第１図は第１表の実施例４、実施例１１および実施
例１２におけるＮｂｔＯ２の添加量と誘電体材料の温度
特性との関係を示している。Further, FIG. 1 shows the relationship between the amount of NbtO2 added and the temperature characteristics of the dielectric material in Examples 4, 11, and 12 shown in Table 1.
第１表から実施例１〜実施例１４はいずれも誘電率（ε
「）を高く維持したままで無負荷Ｑ（Ｑｕ）を３００
０以上に保ち、かつ温度係数をτ、。にして自由にコン
トロールできることを示している。From Table 1, Examples 1 to 14 all have a dielectric constant (ε
``) while keeping the unloaded Q (Qu) high to 300.
0 or more, and the temperature coefficient is τ. This shows that you can freely control it.
また、第１図からＮｂ２Ｏ５の添加量が２．５重量％で
最も温度／周波数変化を直線的にでき、Ｎｂ２Ｏ２の添
加量が０．５重量％では温度／周波数変化を直線的にす
る効果が２．５重量％の場合よりも僅かに低下し、さら
にＮｂｔＯｓの添加量が３．５重量％では温度／周波数
変化の直線性がかなり増加し、したがってＮｂ２Ｏ，の
添加量が３．５重量％よりも増大すると、温度特性が低
下するものと認められる。Also, from Figure 1, when the amount of Nb2O5 added is 2.5% by weight, the temperature/frequency change can be made most linear, and when the amount of Nb2O2 added is 0.5% by weight, it is effective to make the temperature/frequency change linear. 2.5 wt%, and the linearity of the temperature/frequency change increases considerably when the NbtOs addition is 3.5 wt%. It is recognized that when the temperature increases more than , the temperature characteristics deteriorate.
以上のように本発明によれば、誘電率を高く、かつ誘電
損失を小さく維持したままで温度特性の直線性を充分に
確保することができる。As described above, according to the present invention, it is possible to sufficiently ensure linearity of temperature characteristics while maintaining a high dielectric constant and a low dielectric loss.
第１図はＮｂ２Ｏ５の添加量と誘電体材料の温度特性と
の関係を示すグラフである。FIG. 1 is a graph showing the relationship between the amount of Nb2O5 added and the temperature characteristics of the dielectric material.
Claims (2)
〜８２モル％）からなる主成分となる組成中に、Ｎｂ＿
２Ｏ＿３（０．５〜３．５重量％）とＭｎＯ＿２（０．
０１〜１．０重量％）が添加された組成からなることを
特徴とするマイクロ波用誘電体磁器組成物。(1) BaO (18-22 mol%), TiO_2 (78
~82 mol%), Nb_
2O_3 (0.5-3.5% by weight) and MnO_2 (0.
1. A dielectric ceramic composition for microwave use, characterized in that the dielectric ceramic composition has a composition in which 01 to 1.0% by weight) is added.
〜８２モル％）からなる主成分となる組成中に、Ｎｂ＿
２Ｏ＿３（０．５〜３．５重量％）とＭｎＯ＿２（０．
０１〜１．０重量％）とＺｎＯ（１７重量％以下）が添
加された組成からなることを特徴とするマイクロ波用誘
電体磁器組成物。(2) BaO (18-22 mol%), TiO_2 (78
~82 mol%), Nb_
2O_3 (0.5-3.5% by weight) and MnO_2 (0.
1. A dielectric ceramic composition for microwave use, characterized in that the composition contains ZnO (17% by weight or less) and ZnO (17% by weight or less).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61183506A JPH06103602B2 (en) | 1986-08-06 | 1986-08-06 | Dielectric porcelain composition for microwave |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61183506A JPH06103602B2 (en) | 1986-08-06 | 1986-08-06 | Dielectric porcelain composition for microwave |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6340212A true JPS6340212A (en) | 1988-02-20 |
| JPH06103602B2 JPH06103602B2 (en) | 1994-12-14 |
Family
ID=16137025
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61183506A Expired - Fee Related JPH06103602B2 (en) | 1986-08-06 | 1986-08-06 | Dielectric porcelain composition for microwave |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06103602B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63215562A (en) * | 1987-03-04 | 1988-09-08 | 松下電器産業株式会社 | Dielectric ceramic composition |
| JPH0577213A (en) * | 1991-05-23 | 1993-03-30 | Alps Electric Co Ltd | Production of dielectric ceramic |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5741042A (en) * | 1980-08-26 | 1982-03-06 | Nec Corp | Phase lock loop circuit |
| JPS5769607A (en) * | 1980-10-16 | 1982-04-28 | Alps Electric Co Ltd | Dielectric porcelain |
| JPS5884179A (en) * | 1981-11-12 | 1983-05-20 | 富士電気化学株式会社 | Microwave dielectric ceramic composition |
| JPS5918160A (en) * | 1982-07-20 | 1984-01-30 | 三菱鉱業セメント株式会社 | Dielectric ceramic composition |
-
1986
- 1986-08-06 JP JP61183506A patent/JPH06103602B2/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5741042A (en) * | 1980-08-26 | 1982-03-06 | Nec Corp | Phase lock loop circuit |
| JPS5769607A (en) * | 1980-10-16 | 1982-04-28 | Alps Electric Co Ltd | Dielectric porcelain |
| JPS5884179A (en) * | 1981-11-12 | 1983-05-20 | 富士電気化学株式会社 | Microwave dielectric ceramic composition |
| JPS5918160A (en) * | 1982-07-20 | 1984-01-30 | 三菱鉱業セメント株式会社 | Dielectric ceramic composition |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63215562A (en) * | 1987-03-04 | 1988-09-08 | 松下電器産業株式会社 | Dielectric ceramic composition |
| JP2558681B2 (en) * | 1987-03-04 | 1996-11-27 | 松下電器産業株式会社 | Dielectric porcelain composition |
| JPH0577213A (en) * | 1991-05-23 | 1993-03-30 | Alps Electric Co Ltd | Production of dielectric ceramic |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06103602B2 (en) | 1994-12-14 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |