JPH0441601Y2 - - Google Patents
Info
- Publication number
- JPH0441601Y2 JPH0441601Y2 JP5523285U JP5523285U JPH0441601Y2 JP H0441601 Y2 JPH0441601 Y2 JP H0441601Y2 JP 5523285 U JP5523285 U JP 5523285U JP 5523285 U JP5523285 U JP 5523285U JP H0441601 Y2 JPH0441601 Y2 JP H0441601Y2
- Authority
- JP
- Japan
- Prior art keywords
- dielectric
- annular plate
- convex portion
- substantially rectangular
- rectangular parallelepiped
- 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
- 239000003989 dielectric material Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 2
- 239000004020 conductor Substances 0.000 description 17
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007639 printing Methods 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
Landscapes
- Control Of Motors That Do Not Use Commutators (AREA)
Description
【考案の詳細な説明】
（３−１） 産業上の利用分野
本考案は放送衛星による通信に利用される無線
機器等に用いられる小型の誘電体フイルタに関す
る。[Detailed Description of the Invention] (3-1) Field of Industrial Application The present invention relates to a small dielectric filter used in radio equipment and the like used for communications by broadcasting satellites.
（３−２） 従来の技術
放送衛星による通信に利用される無線機器等用
の小型の誘電体フイルタの１例としては従来第２
図（イは平面図、ロはイ図におけるロ−ロ断面を
矢印方向に見た断面図）に示すようなものが使用
されている。すなわち、同図において、誘電体フ
イルタ１は略直方体状の誘電体２に、その相対す
る１対の面に直交する軸を有する断面円形の複数
個（同図の場合は２個）の通孔３を穿孔し、前記
１対の面の内の一方の面４を除く前記略直方体の
他の５面および前記通孔の内面に、相互に連続的
な導体膜５を形成し、さらに通孔３のうちの２個
のものの前記一方の面４の出口に導体膜５と連続
的な導体膜６を形成して成つており、この導体膜
６を共振ユニツトの出力および入力の電極として
いる。(3-2) Conventional technology As an example of a small dielectric filter for wireless equipment used for communication by broadcasting satellites, the second
The one shown in the figure (A is a plan view and B is a cross-sectional view of the Ro-Ro cross section in Figure A as seen in the direction of the arrow) is used. That is, in the figure, a dielectric filter 1 has a substantially rectangular parallelepiped-shaped dielectric 2, and a plurality of (two in the figure) through holes each having a circular cross section and having axes perpendicular to a pair of opposing surfaces. 3, a mutually continuous conductor film 5 is formed on the other five surfaces of the substantially rectangular parallelepiped except for one surface 4 of the pair of surfaces, and on the inner surface of the through hole. A conductor film 5 and a continuous conductor film 6 are formed at the exits of the one surface 4 of two of the resonant units, and the conductor film 6 is used as the output and input electrodes of the resonant unit.
この誘電体フイルタ１はメガヘルツ〜ギガヘル
ツ（ＭHz〜ＧHz）程度の波長のフイルタとしてほ
ぼ良好な性能を有し、また数mm角という小型のも
のが得られるので極めて便利に使用されている
が、次に示すような欠点があつた。すなわち第３
図（第２図ロにおける矢印Ｘ部を示す拡大図）に
示すように本例の誘電体フイルタ１に電波が入力
されると、電極となつている導体膜６の付近の誘
電体内に電界が生じ、電気力線Ｐが発生する。 This dielectric filter 1 has almost good performance as a filter for wavelengths on the order of megahertz to gigahertz (MHz to GHz), and is extremely convenient to use because it can be made small, only a few mm square. It had the following drawbacks. That is, the third
When a radio wave is input to the dielectric filter 1 of this example as shown in the figure (enlarged view showing the arrow and electric lines of force P are generated.
この従来の誘電体フイルタ１のように相対する
導体膜６が同一平面上にある場合は、ごく少量の
大気中の電気力線を含む誘電体中の電気力線Ｐと
の電気力線の総量計算は誘電体及び導体膜６の形
状を考慮するときわめて困難である。 When the opposing conductor films 6 are on the same plane as in this conventional dielectric filter 1, the total amount of lines of electric force with the lines of electric force P in the dielectric material, including a very small amount of lines of electric force in the atmosphere. Calculation is extremely difficult considering the shapes of the dielectric and conductive film 6.
又、誘電体の焼結時の縮率のバラツキによつて
生ずる誘電体寸法のバラツキは、誘電体設計寸法
と適性な導体膜設計寸法との比率を崩すことにな
り導体膜６相互間の電気力線Ｐのバラツキを生じ
させることとなる。さらにはパターン印刷によつ
て形成される導体膜６の印刷位置ズレの誤差はそ
のまま導体膜６相互間の電気力線Ｐのバラツキを
生じさせることとなり、電気力線Ｐの結合量コン
トロールに無理を生じ、それが誘電体フイルタの
性能に悪影響を与え、そのために誘電体フイルタ
を充分に小型化したものが実現できないという欠
点があつた。 Furthermore, variations in the dielectric dimensions caused by variations in the shrinkage ratio during sintering of the dielectric destroy the ratio between the dielectric design dimensions and the appropriate conductor film design dimensions, resulting in the electric current between the conductor films 6. This will cause variations in the lines of force P. Furthermore, the error in the printing position shift of the conductor film 6 formed by pattern printing directly causes variations in the lines of electric force P between the conductor films 6, making it difficult to control the amount of coupling of the lines of electric force P. This has an adverse effect on the performance of the dielectric filter, and as a result, it has been difficult to realize a dielectric filter that is sufficiently miniaturized.
（３−３） 考案が解決しようとする問題点
本考案は従来の誘電体フイルタの以上述べた欠
点を解消し、性能に優れ、設計しやすく、充分に
小型化が可能である誘電体フイルタを提供しよう
とするものである。(3-3) Problems that the invention aims to solve The present invention solves the above-mentioned drawbacks of conventional dielectric filters, and creates a dielectric filter that has excellent performance, is easy to design, and can be sufficiently miniaturized. This is what we are trying to provide.
（３−４） 問題点を解決するための手段および
その作用
本考案は次のような事実に基づいている。すな
わち先ず、誘電体フイルタの表面に形成された相
対する導体膜が誘電体面に対して段差のある面上
にある場合には、導体膜相互間の電気力線はすべ
て大気中に存在するとみなされる為に、結合量は
理論値にほぼ一致し、設計を容易にする。(3-4) Means for solving the problems and their effects The present invention is based on the following facts. In other words, first, if the opposing conductive films formed on the surface of the dielectric filter are on a plane with a step relative to the dielectric surface, all lines of electric force between the conductive films are considered to exist in the atmosphere. Therefore, the amount of coupling almost matches the theoretical value, which facilitates the design.
又、誘電体の焼結時の縮率のバラツキは複数個
の通孔間隔と同一比率で円環板状凸部上面部分の
寸法にも及ぶために、円環板状凸部上面の導体膜
を結合用電極とする本考案では実質的に結合量の
変化が発生しない。 In addition, the variation in shrinkage ratio during sintering of the dielectric extends to the dimensions of the upper surface of the annular plate-shaped protrusion at the same ratio as the interval between the plurality of through holes. In the present invention, in which the bonding electrode is used, there is virtually no change in the amount of bonding.
従つて、設計、製造時においても、導体膜間に
発生する電気線の結合量コントロールに無理を生
ぜず、そのために優れた性能を発揮するという実
験的結果が得られる。 Therefore, even during design and manufacturing, it is not difficult to control the amount of coupling of electric wires generated between conductor films, and it has been experimentally shown that excellent performance is exhibited.
本考案はこれらに基づいてなされたものであ
り、略直方体状の誘電体にその相対向する１対の
面に直交する軸を有する断面円形の複数個の通孔
を設け、またその通孔の一方の出口部分に通孔と
材質的に連続する円環板状の凸部を設け、その凸
部の端面には導体膜を形成しその外周面は誘電体
面のままとし、さらに略直方体の凸部を設けた面
以外の５面および通孔の内周面には相互に連続的
であり、かつ前記の凸部の端面の導体膜とも連続
的である導体膜を形成することによつて前記目的
を達成している。 The present invention was developed based on the above, and includes providing a substantially rectangular parallelepiped dielectric with a plurality of through holes having a circular cross section and having axes perpendicular to a pair of opposing surfaces of the dielectric, and An annular plate-shaped convex part that is continuous with the through hole in terms of material is provided at one exit part, a conductive film is formed on the end surface of the convex part, and the outer circumferential surface remains a dielectric surface, and an approximately rectangular convex part is provided. By forming a conductive film that is continuous with each other and also continuous with the conductive film on the end face of the convex part on five surfaces other than the surface where the part is provided and on the inner peripheral surface of the through hole, the above-mentioned has achieved its purpose.
以下実施例の図面に基いて本考案の構成をさら
に説明する。第１図は本考案の一の実施例を示し
た図でイは平面図ロはイ図におけるロ−ロ断面を
矢印方向に見た図である。同図において、誘電体
フイルタ１は略直方体状の誘電体２にその相対す
る１対の面に直交する軸を有する断面円形の複数
個の通孔３を穿孔し、前記１対の面のうちの一方
の面４の通孔３の出口部分には円環板状の凸部７
を設けて成つている。また略直方体状の誘電体２
の、面４を除く他の５面には相互に連続的な導体
膜５が形成されており、前記円環板状の凸部７の
端面には導体膜５と連続的な導体膜８が形成され
ている。前記の面４と前記円環板状の凸部７の外
周部９とは導体膜を形成することなく、その表面
は誘電体のままとなつている。 The configuration of the present invention will be further explained below based on the drawings of the embodiments. FIG. 1 is a diagram showing one embodiment of the present invention, in which A is a plan view and B is a cross-sectional view of Rollo in FIG. 1, viewed in the direction of the arrow. In the figure, a dielectric filter 1 has a substantially rectangular parallelepiped-shaped dielectric 2 with a plurality of through holes 3 each having a circular cross section and having an axis perpendicular to a pair of opposing surfaces. An annular plate-shaped convex portion 7 is provided at the exit portion of the through hole 3 on one side 4 of the
It consists of In addition, a dielectric material 2 having a substantially rectangular parallelepiped shape
A mutually continuous conductor film 5 is formed on the other five surfaces except the surface 4, and a conductor film 5 and a continuous conductor film 8 are formed on the end face of the annular plate-shaped convex portion 7. It is formed. The surface 4 and the outer peripheral portion 9 of the annular plate-shaped convex portion 7 do not form a conductive film, and their surfaces remain dielectric.
本例の誘電体フイルタ１ではその相対向する導
体膜８は誘電体の面４に対して段差のある面に形
成されているので、段間結合量の設計及び製造性
能に優れ、また円環板状凸部の上面に形成された
導体膜８による容量によつて共振ユニツトの共振
器長が短縮できると同時に円環板状凸部の上面積
を大きくとることによつてエネルギ蓄積が増加
し、共振ユニツトのQuが向上する。 In the dielectric filter 1 of this example, the opposing conductor films 8 are formed on a surface with a step with respect to the dielectric surface 4, so that the design of the inter-step coupling amount and manufacturing performance are excellent, and the circular ring The resonator length of the resonant unit can be shortened by the capacitance created by the conductor film 8 formed on the upper surface of the plate-shaped protrusion, and at the same time, energy storage can be increased by increasing the upper area of the annular plate-shaped protrusion. , the Q u of the resonant unit is improved.
従つて同一Quを得る為には誘電体外形寸法を
小さくすることができるので、フイルタを小型化
することができる。 Therefore, in order to obtain the same Q u , the outer dimensions of the dielectric can be made smaller, so the filter can be made smaller.
誘電体の面に凸部を設けることは誘電体の成型
の際の型を加工することによつて極めて容易にな
し得るので多量生産に向いており製造原価も従来
のものに比べて、殆ど増加することはない。 Providing convex portions on the surface of the dielectric can be done extremely easily by processing the mold when molding the dielectric, so it is suitable for mass production and the manufacturing cost is almost increased compared to conventional ones. There's nothing to do.
（３−５） 考案の効果
本考案は通孔を有する略直方体状の誘電体の表
面に導体膜を適宜形成して成る誘電体フイルタの
通孔の一方の出口部に円環板状の凸部を設ける等
によつて、ＭHz〜ＧHz程度の波長の電波に対して
極めて性能に優れ、しかも従来のものに比べて小
型化の可能な誘電体フイルタを提供するという優
れた効果を有するものである。(3-5) Effects of the invention The present invention has a dielectric filter formed by appropriately forming a conductive film on the surface of a substantially rectangular parallelepiped dielectric material having a through hole. This has the excellent effect of providing a dielectric filter that has extremely excellent performance against radio waves with wavelengths of about MHz to GHz and can be made smaller than conventional filters. be.
第１図は本考案に一の実施例を示した図で、イ
は平面図ロはイ図におけるロ−ロ断面を矢印方向
に見た図、第２図は従来用いられていた誘電体フ
イルタを例示した図で、イは平面図ロはイ図にお
けるロ−ロ断面を矢印方向に見た図、第３図は第
２図ロにおける矢印Ｘ部を拡大して示した図であ
る。
１……誘電体フイルタ、２……誘電体、３……
通孔、４……一方の面、５，６……導体膜、７…
…凸部、８……導体膜、９……外周部。
Fig. 1 is a diagram showing one embodiment of the present invention, A is a plan view, B is a cross-sectional view of Ro-Ro in Fig. FIG. 3 is an enlarged view of the section indicated by the arrow X in FIG. 2B. 1...Dielectric filter, 2...Dielectric, 3...
Through hole, 4... One side, 5, 6... Conductor film, 7...
...Convex portion, 8...Conductor film, 9...Outer peripheral portion.
Claims (1)
に直交する軸を有する断面円形の複数個の通孔を
穿孔し、該通孔の前記１対の面の内の一方の面に
対する出口部分に材質的に連続する円環板状の凸
部を設け、前記一方の面および前記円環板状の凸
部の外周面を除く前記略直方体の他の５面に、前
記通孔の内面から前記円環板状の凸部の端面に、
相互に連続的な導体膜を形成して成る誘電体フイ
ルタ。 A plurality of through holes having a circular cross section and having axes perpendicular to the pair of opposing surfaces are bored in a dielectric material having a substantially rectangular parallelepiped shape, and an exit of the through hole to one of the pair of surfaces. An annular plate-shaped convex portion that is continuous in material is provided in the portion, and the other five surfaces of the substantially rectangular parallelepiped excluding the one surface and the outer circumferential surface of the annular plate-shaped convex portion are provided with an inner surface of the through hole. to the end face of the annular plate-shaped convex portion,
A dielectric filter made of interconnected conductive films.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5523285U JPH0441601Y2 (en) | 1985-04-13 | 1985-04-13 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5523285U JPH0441601Y2 (en) | 1985-04-13 | 1985-04-13 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61171303U JPS61171303U (en) | 1986-10-24 |
| JPH0441601Y2 true JPH0441601Y2 (en) | 1992-09-30 |
Family
ID=30577711
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5523285U Expired JPH0441601Y2 (en) | 1985-04-13 | 1985-04-13 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0441601Y2 (en) |
-
1985
- 1985-04-13 JP JP5523285U patent/JPH0441601Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61171303U (en) | 1986-10-24 |
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