JPH01227303A - Microwave dielectric porcelain composition material - Google Patents
Microwave dielectric porcelain composition materialInfo
- Publication number
- JPH01227303A JPH01227303A JP63054469A JP5446988A JPH01227303A JP H01227303 A JPH01227303 A JP H01227303A JP 63054469 A JP63054469 A JP 63054469A JP 5446988 A JP5446988 A JP 5446988A JP H01227303 A JPH01227303 A JP H01227303A
- Authority
- JP
- Japan
- Prior art keywords
- dielectric
- microwave dielectric
- composition material
- porcelain composition
- dielectric porcelain
- 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
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- 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) [Summary] 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、誘電体共振器、フィルタなどに用いられるマ
イクロ波誘電体磁器組成物およびその製造方法に係るも
ので、特に添加物により特性を改善したものである。Detailed Description of the Invention [Field of Industrial Application] The present invention relates to a microwave dielectric ceramic composition used for dielectric resonators, filters, etc. and a method for producing the same. This is an improvement.
数百ＭＨｚからＧＨｚ帯が利用される移動通信用等のフ
ィルタとして誘電体フィルタが用いられる。Dielectric filters are used as filters for mobile communications, etc., which utilize bands from several hundred MHz to GHz.
この誘電体フィルタの材料として、例えばＭｇＯ−Ｃａ
０−ＴｉＯ１系やＢａｚＴｉｔＯｚｏ系など、種々の磁
器組成物が用いられているが、一般に誘電率、Ｑ、温度
特性の優れたものが要求されている。As the material of this dielectric filter, for example, MgO-Ca
Various ceramic compositions have been used, such as 0-TiO1 series and BazTitOzo series, but in general, those with excellent dielectric constant, Q, and temperature characteristics are required.
そのような組成物の一つとしてＢａＯ−Ｔｉ０２−Ｎｄ
ｚＯ３から成るものがある。この系は前記の系に比べ誘
電率が高く、共振器、フィルタを小型化できる。この成
分系で幾つかのサンプルを作成し、その特性（誘電率ε
、Ｑ、共振周波数の温度係数τｆ）を測定すると次のよ
うになっていた。One such composition is BaO-Ti02-Nd
There is one made of zO3. This system has a higher dielectric constant than the above-mentioned systems, and the resonator and filter can be made smaller. Several samples were created using this component system, and their properties (permittivity ε
, Q, and the temperature coefficient τf of the resonance frequency were measured and found to be as follows.
また、第１図に示すような三元図の斜線の部分すなわち
、ＸＢａＯ＋ ＹＴｉＯｌ ＋ ＺＮｄ、０．と表した
とき、Ｘ、Ｙ、Ｚがそれぞれ、８．５ ≦Ｘ ≦１９．
０．６７．０≦Ｙ≦７１．０．１４．０≦Ｚ≦２４．５
（干ル％）（ただし、Ｘ＋Ｙ＋Ｚ＝１）の範囲で、誘電
率が６０以上となりＱが３８００以上、温度係数が７０
以下となり、利用可能な範囲であることが分かった。In addition, the diagonally shaded part of the ternary diagram as shown in FIG. When expressed as, X, Y, and Z are each 8.5 ≦X ≦19.
0.67.0≦Y≦71.0.14.0≦Z≦24.5
(Help%) (However, in the range of X+Y+Z=1), the dielectric constant is 60 or more, Q is 3800 or more, and the temperature coefficient is 70.
The following results were found to be within the usable range.
マイクロ波で用いる共振器（ＴＥＭＩ／４λモード、Ｔ
Ｅモード等）等に使用する誘電体セラミックではその共
振周波数の温度係数の絶対値はなるべく小さい方がよい
。Resonator used in microwave (TEMI/4λ mode, T
For dielectric ceramics used in E mode, etc., the absolute value of the temperature coefficient of the resonance frequency should be as small as possible.
上記の表に示したように、温度係数が０となるポイント
もあるが、この点においては誘電率、Ｑが小さくなり、
Ｑが高い領域で温度特性の良好なものを得ることは困難
である。もちろん誘電率、Ｑも一定の値を確保できなけ
ればならない。As shown in the table above, there is a point where the temperature coefficient becomes 0, but at this point the dielectric constant, Q, becomes small,
It is difficult to obtain good temperature characteristics in a high Q region. Of course, the dielectric constant and Q must also be able to maintain constant values.
本発明は、誘電率、Ｑ、温度特性の面で優れた特性を有
するマイクロ波用誘電体磁器組成物を得ようとするもの
である。The present invention aims to obtain a microwave dielectric ceramic composition having excellent properties in terms of dielectric constant, Q, and temperature characteristics.
特に、誘電率、Ｑ特性を大きく劣化させることなく、温
度特性を改善して温度係数を小さく抑えようとするもの
である。In particular, it is intended to improve the temperature characteristics and suppress the temperature coefficient to a small value without significantly deteriorating the dielectric constant and Q characteristics.
本発明は、ＢａＯＴｉ０ｚ Ｎｄ２Ｏ２の基本組成に
ＡＩＺ（ｈを添加することによって上記の課題を解決す
るものである。The present invention solves the above problems by adding AIZ(h) to the basic composition of BaOTiOz Nd2O2.
すなわち、ＢａＯ、Ｔｉｅ、、Ｎｄ２Ｏ２から成り、こ
れを一般式
％式％
ただし、Ｘ ＋Ｙ ＋Ｚ−１）の範囲の組成物１００重
量部に対しＡ１□０３が２．０！量部以下添加されたこ
とに特徴を有するマイクロ波用誘電体磁器組成物である
。That is, it consists of BaO, Tie, Nd2O2, and is expressed by the general formula %, where A1□03 is 2.0 for 100 parts by weight of the composition in the range of This dielectric ceramic composition for microwave use is characterized in that less than a certain amount is added.
以下、本発明の実施例について説明する。 Examples of the present invention will be described below.
本発明によるマイクロ波用誘電体磁器組成物を製造する
にあたっては、ＢａＣＯ３、Ｔｉ０ｚ、Ｎｄ２Ｏ３を所
定のモル比になるように秤量し、ボールミルにて２４時
間湿式混合し、乾燥後、空気中で１０００ ” Ｃで仮
焼する方法を採った。仮焼物を再びボールミルで所定の
重量パーセントのＡ１□０３とともに２４時間湿式粉砕
混合後、バインダーを添加し、スプレードライヤで造粒
した。この造粒物を１２Φ×１ＯＩＩＩＩ＋になるよう
３０００Ｋｇ／ｃｍ”の圧力で成形し、１３００〜１３
８０６Ｃで焼成してサンプルを作成した。To produce the dielectric ceramic composition for microwave use according to the present invention, BaCO3, Ti0z, and Nd2O3 are weighed to have a predetermined molar ratio, wet mixed in a ball mill for 24 hours, dried, and heated in air at 1000 molar ratios. The calcined product was wet-pulverized and mixed with a predetermined weight percentage of A1□03 in a ball mill for 24 hours, a binder was added, and the granules were granulated in a spray dryer. Molded at a pressure of 3000Kg/cm" to 12Φ x 1OIII+, 1300~13
A sample was prepared by firing at 806C.
このサンプルをＨＡＫＫＩ ＆ ＣＯＬＥＭＡＮ法によ
り３〜４ Ｇ）ｌｚで測定し、誘電率εｒ−，Ｑ、温度
係数τｆをそれぞれ求めた。This sample was measured at 3 to 4 G)lz by the HAKKI & COLEMAN method to determine the dielectric constant εr-, Q, and temperature coefficient τf, respectively.
前記の表の試料Ｎｏ、 ２および３にＡｌｘＯｓを添
加した結果は次の表のようになっていた。The results of adding AlxOs to samples No. 2 and 3 in the above table were as shown in the following table.
これからも明らかなように、Ａ１．０３を添加すること
によって温度係数τｆは数１０ｐｐｍ／ ＠Ｃのオーダ
ーで改善され、ｏｐｐ■に近づけることが可能となる。As is clear from this, by adding A1.03, the temperature coefficient τf is improved on the order of several tens of ppm/@C, making it possible to approach opp■.
前記の表と比較してみても、無添加の場合に対し て誘
電率８、Ｑは僅かしか低下しておらず、特性の劣化は極
めて小さい。Even when compared with the table above, the dielectric constant 8 and Q are only slightly lower than in the case without additives, and the deterioration of the properties is extremely small.
このような特性を有するマイクロ波誘電体磁器組成物を
用いれば、低損失、小型でかつ共振周波数の温度による
変化の小さい誘電体フィルタ等を得ることができる。By using a microwave dielectric ceramic composition having such characteristics, it is possible to obtain a dielectric filter or the like that has low loss, is small in size, and has a small change in resonance frequency due to temperature.
Ａｈａ、の添加量を変えて測定した結果を第２図に示す
、前記の試料Ｎｏ２の基本組成にＡＩＺＯｎを、その添
加量を変えて添加場合の温度係数τｆの変化を示したの
が破線２２である。無添加のとき３０ｐｐｍ／”Ｃであ
ったのが、１．０ｗｔ％添加でほぼ０となった。また、
試料Ｎｏ３の基本組成にＡｈａ、を添加した時の結果を
示したのが実線２１である。添加量を増やすにしたがっ
て温度特性が改善され、２．０ｗｔ％で５ ｐｐｍ／
” Ｃまで下げることができた。これ以上添加しても効
果はほとんどなく、他の特性の劣化をきたすので、添加
量の上限は２．０ｗｔ％とするのが望ましい。Figure 2 shows the results of measurements with varying amounts of Aha. The broken line 22 shows the change in temperature coefficient τf when AIZOn is added to the basic composition of sample No. 2 in varying amounts. It is. When no additive was added, the value was 30 ppm/''C, but when 1.0 wt% was added, it became almost 0.
Solid line 21 shows the result when Aha was added to the basic composition of sample No. 3. As the amount added increases, the temperature characteristics improve, and at 2.0 wt% it is 5 ppm/
It was possible to reduce the amount to 2.0 wt%. Adding more than this has almost no effect and causes deterioration of other properties, so it is desirable to set the upper limit of the addition amount to 2.0 wt%.
本発明によれば、誘電率、Ｑ、温度特性を総合的にみた
場合に、極めて特性の良好なマイクロ波用誘電体磁器組
成物が得られる。According to the present invention, it is possible to obtain a dielectric ceramic composition for microwave use that has extremely good properties when considering the dielectric constant, Q, and temperature properties comprehensively.
特に、誘電率、Ｑの特性を維持したまま温度特性の改善
が可能となる。In particular, it is possible to improve the temperature characteristics while maintaining the dielectric constant and Q characteristics.
これによって、低損失でかつ小型の誘電体共振器、フィ
ルタを得ることができる。This makes it possible to obtain a small dielectric resonator and filter with low loss.
第１図は本発明の誘電体磁器組成物の基本組成を示す三
元図、第２図は添加量と温度特性の関係を示す説明図で
ある。FIG. 1 is a ternary diagram showing the basic composition of the dielectric ceramic composition of the present invention, and FIG. 2 is an explanatory diagram showing the relationship between additive amount and temperature characteristics.
Claims (1)
一般式ＸＢａＯ＋ＹＴｉＯ＿２＋ＺＮｄ＿２Ｏ＿３と表
したとき、Ｘ、Ｙ、Ｚがそれぞれ、８．５≦Ｘ≦１９．
０，６７．０≦Ｙ≦７１．０、１４．０≦Ｚ≦２４．５
（モル％）（ただし、Ｘ＋Ｙ＋Ｚ＝１）の範囲にある組
成物１００重量部に対し、Ａｌ＿２Ｏ＿３を２．０重量
部以下添加したことを特徴とするマイクロ波用誘電体磁
器組成物。It consists of BaO, TiO_2, and Nd_2O_3, and when expressed as the general formula XBaO+YTiO_2+ZNd_2O_3, X, Y, and Z are respectively 8.5≦X≦19.
0, 67.0≦Y≦71.0, 14.0≦Z≦24.5
A dielectric ceramic composition for microwave use, characterized in that 2.0 parts by weight or less of Al_2O_3 is added to 100 parts by weight of the composition in the range of (mol%) (X+Y+Z=1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63054469A JP2631689B2 (en) | 1988-03-08 | 1988-03-08 | Microwave dielectric porcelain composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63054469A JP2631689B2 (en) | 1988-03-08 | 1988-03-08 | Microwave dielectric porcelain composition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01227303A true JPH01227303A (en) | 1989-09-11 |
| JP2631689B2 JP2631689B2 (en) | 1997-07-16 |
Family
ID=12971532
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63054469A Expired - Fee Related JP2631689B2 (en) | 1988-03-08 | 1988-03-08 | Microwave dielectric porcelain composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2631689B2 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01140505A (en) * | 1987-08-21 | 1989-06-01 | Narumi China Corp | Dielectric porcelain composition |
| US5182240A (en) * | 1990-08-20 | 1993-01-26 | Ngk Insulators, Ltd. | Dielectric ceramic composition of BaO, TiO2,Nd2 O3, Sm2 3 and Al2 O3 |
| US5185304A (en) * | 1990-08-20 | 1993-02-09 | Ngk Insulators, Ltd. | Dielectric ceramic composition of BaO, TiO2, Nd2 O3, Sm2 O3 and Bi2 O3 |
| US5650368A (en) * | 1993-12-02 | 1997-07-22 | Kyocera Corporation | Dielectric ceramic composition |
| JP2010235336A (en) * | 2009-03-30 | 2010-10-21 | Kyocera Corp | Dielectric ceramics and dielectric resonator |
| WO2012015038A1 (en) | 2010-07-29 | 2012-02-02 | 京セラ株式会社 | Dielectric ceramic and dielectric filter including same |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59162172A (en) * | 1983-03-04 | 1984-09-13 | 富士通株式会社 | High permittivity ceramic composition |
| JPS6035406A (en) * | 1983-08-05 | 1985-02-23 | ティーディーケイ株式会社 | Dielectric porcelain composition |
-
1988
- 1988-03-08 JP JP63054469A patent/JP2631689B2/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59162172A (en) * | 1983-03-04 | 1984-09-13 | 富士通株式会社 | High permittivity ceramic composition |
| JPS6035406A (en) * | 1983-08-05 | 1985-02-23 | ティーディーケイ株式会社 | Dielectric porcelain composition |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01140505A (en) * | 1987-08-21 | 1989-06-01 | Narumi China Corp | Dielectric porcelain composition |
| US5182240A (en) * | 1990-08-20 | 1993-01-26 | Ngk Insulators, Ltd. | Dielectric ceramic composition of BaO, TiO2,Nd2 O3, Sm2 3 and Al2 O3 |
| US5185304A (en) * | 1990-08-20 | 1993-02-09 | Ngk Insulators, Ltd. | Dielectric ceramic composition of BaO, TiO2, Nd2 O3, Sm2 O3 and Bi2 O3 |
| US5650368A (en) * | 1993-12-02 | 1997-07-22 | Kyocera Corporation | Dielectric ceramic composition |
| JP2010235336A (en) * | 2009-03-30 | 2010-10-21 | Kyocera Corp | Dielectric ceramics and dielectric resonator |
| WO2012015038A1 (en) | 2010-07-29 | 2012-02-02 | 京セラ株式会社 | Dielectric ceramic and dielectric filter including same |
| CN103038190A (en) * | 2010-07-29 | 2013-04-10 | 京瓷株式会社 | Dielectric ceramic and dielectric filter including same |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2631689B2 (en) | 1997-07-16 |
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