JPH06204721A - Dielectric filter employing flat plate resonator and manufacture of flat plate resonator - Google Patents
Dielectric filter employing flat plate resonator and manufacture of flat plate resonatorInfo
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- JPH06204721A JPH06204721A JP34780292A JP34780292A JPH06204721A JP H06204721 A JPH06204721 A JP H06204721A JP 34780292 A JP34780292 A JP 34780292A JP 34780292 A JP34780292 A JP 34780292A JP H06204721 A JPH06204721 A JP H06204721A
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- Prior art keywords
- dielectric
- flat plate
- resonator
- conductor
- dielectrics
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Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、中心周波数が数１００
ＭＨｚから数ＧＨｚのフィルタのうち、特に移動体通信
等に利用される平板型共振器を用いた誘電体フィルタ及
び平板型共振器の製造方法に関する。BACKGROUND OF THE INVENTION The present invention has a center frequency of several hundreds.
The present invention relates to a dielectric filter using a flat plate resonator used for mobile communication and the like among filters of MHz to several GHz, and a method for manufacturing the flat plate resonator.
【０００２】[0002]
【従来の技術】従来、図５に示す平板型共振器１は、２
つの誘電体２を有している。各誘電体２は、四角柱形を
呈する誘電体２の長手方向の側面のうち、相対向する一
対の側面に金属メッキ等の手段を用いて形成した第１の
導体膜３と第２の導体膜４とを有している。これらの誘
電体２は互いに重ね合わせて半田付けによって結合され
ている。平板型共振器１の長手方向を直交する両端面
は、両端面のうちの一端面５で短絡され、他端面６で開
放されている。平板型共振器１の長手方向における長さ
寸法Ｌは、平板型共振器１を用いて構成される誘電体フ
ィルタの中心周波数が１／４波長となるように選定され
ている。2. Description of the Related Art Conventionally, the plate type resonator 1 shown in FIG.
It has two dielectrics 2. Each of the dielectrics 2 has a first conductor film 3 and a second conductor 3 formed by means of metal plating or the like on a pair of side surfaces facing each other out of the side surfaces in the longitudinal direction of the dielectric body 2 having a rectangular prism shape. And a membrane 4. These dielectrics 2 are superposed on each other and joined by soldering. Both end surfaces of the flat plate resonator 1 orthogonal to the longitudinal direction are short-circuited at one end surface 5 and open at the other end surface 6. The length dimension L of the plate resonator 1 in the longitudinal direction is selected so that the center frequency of the dielectric filter formed by using the plate resonator 1 is ¼ wavelength.
【０００３】即ち、平板型共振器１では紙面の右側（後
面）の一端面（短絡端面）５で開放されており、紙面の
左側（前面）の一端面（開放端面）６で開放されてい
る。That is, in the flat plate resonator 1, one end surface (short-circuited end surface) 5 on the right side (rear surface) of the paper surface is opened, and one end surface (open end surface) 6 on the left side (front surface) of the paper surface is opened. .
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、平板型
共振器１を用いた誘電体フィルタにおいて要求される特
性としては、通過帯域での伝送損失が小さく、阻止帯域
における減衰量が大きく、立上がり特性が良いことにあ
るが、低いＱ値をもつ平板型共振器１を用いて、上記の
特性を満たす誘電体フィルタを実現することは困難であ
る。However, the dielectric filter using the plate resonator 1 is required to have a small transmission loss in the pass band, a large attenuation in the stop band, and a high rise characteristic. Although good, it is difficult to realize a dielectric filter satisfying the above characteristics by using the flat plate resonator 1 having a low Q value.
【０００５】それ故に、本発明の課題は、Ｑ値を向上し
た平板型共振器を用いることにより、上記の特性を満た
す平板型共振器を用いた誘電体フィルタ及び平板型共振
器の製造方法を提供することにある。Therefore, an object of the present invention is to provide a dielectric filter using a flat plate resonator satisfying the above characteristics by using a flat plate resonator having an improved Q value, and a method of manufacturing the flat plate resonator. To provide.
【０００６】[0006]
【課題を解決するための手段】本発明によれば、四角柱
形を呈し相対向する一対の側面及び該側面を直交する両
端面のうちの一方の端面に形成した導体膜を有している
誘電体を含み、前記該誘電体の少なくとも２つを上記一
対の側面のうち一方の側面で対向し、前記誘電体ととも
に前記導体膜間に挟み重ね合わせ結合した導体板を有し
ていることを特徴とする平板型共振器が得られる。According to the present invention, there is provided a pair of side surfaces having a rectangular prism shape and facing each other, and a conductor film formed on one end surface of both end surfaces orthogonal to each other. A conductor plate including a dielectric member, at least two of the dielectric members facing each other on one side face of the pair of side faces, sandwiched between the conductor films together with the dielectric member, and bonded together. A characteristic flat plate type resonator is obtained.
【０００７】また、本発明によれば、平板型共振器を少
なくとも１つを用い、複数の平板型共振器を互いに所定
の間隔おいて配列した接地導体板と、両端に位置する前
記平板型共振器にそれぞれ接続した静電結合用誘電体
と、該静電結合用誘電体の一方に接続した入力端子と、
該静電結合用誘電体の他方に接続した出力端子とを有し
ている誘電体フィルタが得られる。Further, according to the present invention, at least one flat plate resonator is used, and a plurality of flat plate resonators are arranged at a predetermined interval, and a ground conductor plate is provided, and the flat plate resonators at both ends are arranged. For electrostatic coupling, each connected to a container, and an input terminal connected to one of the electrostatic coupling dielectrics,
A dielectric filter having an output terminal connected to the other of the electrostatic coupling dielectrics is obtained.
【０００８】また、本発明によれば、誘電体を四角柱形
を呈する平板型共振器の寸法に切断し、該誘電体の相対
向する一対の側面及び該側面を直交する両端面のうちの
一方の端面に導体膜を形成し、その後、前記側面の前記
導体膜を相対向して少なくとも２つの前記誘電体の間に
導体板を挟み込み少なくとも前記２つの誘電体を結合す
る平板型共振器の製造方法が得られる。Further, according to the present invention, the dielectric is cut into the size of a flat plate type resonator having a quadrangular prism shape, and one of a pair of opposite side surfaces of the dielectric and both end surfaces of the side surface orthogonal to each other. A flat resonator in which a conductor film is formed on one end face, and then the conductor films on the side surfaces are opposed to each other, and a conductor plate is sandwiched between at least two dielectric members to couple at least the two dielectric members. A manufacturing method is obtained.
【０００９】また、本発明によれば、誘電体の全面に導
体膜を形成し、該誘電体を少なくとも２つ用意して、少
なくとも該２つの誘電体間に導体板を挟み込んで少なく
とも該２つの誘電体及び前記導体板を相互に結合し、前
記誘電体を四角柱形を呈する平板型共振器の寸法に切断
し、複数の平板型共振器を作る平板型共振器の製造方法
が得られる。Further, according to the present invention, a conductor film is formed on the entire surface of the dielectric material, at least two dielectric materials are prepared, and a conductor plate is sandwiched between at least the two dielectric materials to form at least the two dielectric materials. A method of manufacturing a flat plate resonator, in which a dielectric and the conductor plate are coupled to each other, and the dielectric is cut into a size of a flat plate resonator having a rectangular prism shape to form a plurality of flat plate resonators, is obtained.
【００１０】[0010]
【実施例】図３は本発明の平板型共振器の一実施例を示
している。なお、実施例において図５と同じ部分には同
じ符号を付して説明をする。図１を参照して、平板型共
振器１は、２つの誘電体２を有している。各誘電体２
は、四角柱形を呈する誘電体２の長手方向の側面のう
ち、相対向する一対の側面に金属メッキ等の手段を用い
て形成された第１の導体膜３と第２の導体膜４とを有し
ている。導体膜３，４の形成方法としては、金属メッキ
のほかに、スパッタや焼き付け等によっても同様な効果
がある。平板型共振器１の長手方向を直交する両端面
は、両端面のうちの一端面（短絡端面）５で金属メッキ
等の手段を用いて形成された第３の導体膜１４によって
短絡され、他端面（開放端面）６で開放されている。こ
れらの誘電体２は誘電体２の間に導体板１５を挟み、重
ね合わせて半田付けによって結合されている。DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 3 shows an embodiment of a flat plate type resonator according to the present invention. In the embodiment, the same parts as those in FIG. With reference to FIG. 1, the plate resonator 1 has two dielectrics 2. Each dielectric 2
Is a first conductor film 3 and a second conductor film 4 formed by means of metal plating or the like on a pair of side faces facing each other of the side faces in the longitudinal direction of the dielectric body 2 having a rectangular prism shape. have. As a method of forming the conductor films 3 and 4, besides metal plating, the same effect can be obtained by sputtering or baking. Both end faces of the flat plate resonator 1 orthogonal to the longitudinal direction are short-circuited by a third conductor film 14 formed by means of metal plating or the like on one end face (short-circuited end face) 5 of the both end faces, It is open at the end face (open end face) 6. These dielectrics 2 are joined by sandwiching a conductor plate 15 between the dielectrics 2 and superposing them.
【００１１】平板型共振器１の実際の製作例としては、
幅寸法Ｗ＝１．４、高さ寸法Ｔ／２＝１．４ｍｍ、長さ
寸法Ｌ＝１２．０ｍｍの形状を持つ２つの誘電体２に、
厚さ寸法が１０μｍの銅メッキを施した第１及び第２の
導体膜３，４及び第３の導体膜１４を形成した誘電体２
を用意して、これらの誘電体２の間に、厚み寸法ｄ＝３
５μｍ、１００μｍ、２００μｍの厚み寸法から選定さ
れた銅板でなる導体板１５を挟み結合した。この場合の
平板型共振器１のＱ値を測定した結果を図２に示す。そ
の結果、平板型共振器１のＱ値は、１８０程度となっ
た。導体板１５を挟まない場合の平板型共振器１のＱ値
は、１５０程度であった。これらを比較すると、導体板
１５を挟んだ場合の平板型共振器１のＱ値は、約２０％
の向上が見られた。As an actual manufacturing example of the plate type resonator 1,
Two dielectrics 2 each having a width W = 1.4, a height T / 2 = 1.4 mm, and a length L = 12.0 mm,
Dielectric 2 having first and second conductor films 3, 4 and third conductor film 14 plated with copper having a thickness of 10 μm
And the thickness dimension d = 3 between these dielectrics 2.
A conductor plate 15 made of a copper plate selected from thicknesses of 5 μm, 100 μm and 200 μm was sandwiched and bonded. The result of measuring the Q value of the flat plate resonator 1 in this case is shown in FIG. As a result, the Q value of the flat plate resonator 1 was about 180. The Q value of the flat plate type resonator 1 when the conductor plate 15 was not sandwiched was about 150. Comparing these, the Q value of the flat plate type resonator 1 when the conductor plate 15 is sandwiched is about 20%.
The improvement was seen.
【００１２】平板型共振器１を製作するには、２つ誘電
体２を平型共振器１の各寸法（但し、厚み寸法は１／
２）に切断し、誘電体２に金属メッキ等の手段を用いて
第１及び第２の導体膜３，４と、両端面５，６に第３の
導体膜１４を形成する。その後、第１及び第２の導体膜
３，４の一面が相対向するようにして２つの誘電体２の
間に導体板１５を挟み込み、２つの誘電体２を半田付け
を行った後に、側面及び他端面（開放端面）６の第３の
導体膜１４を研磨して製作する。In order to manufacture the flat resonator 1, two dielectrics 2 are provided in each dimension of the flat resonator 1 (however, the thickness dimension is 1 /
2) and the first and second conductor films 3 and 4 are formed on the dielectric 2 by means such as metal plating, and the third conductor film 14 is formed on both end surfaces 5 and 6. After that, the conductor plate 15 is sandwiched between the two dielectrics 2 such that one surfaces of the first and second conductor films 3 and 4 face each other, and after the two dielectrics 2 are soldered, And the third conductor film 14 on the other end surface (open end surface) 6 is polished and manufactured.
【００１３】また、平板型共振器１の他の製作方法を図
３に示す。図３（ａ）において長さ寸法２Ｌ，幅ｌ（ｌ
は任意に設定）、厚み寸法Ｔ／２、に加工された板状の
誘電体２を用意する。この誘電体２の全面には、図３
（ｂ）に示すように、金属メッキ等の手段を用いて導電
膜を形成する。この誘電体２を２つ用意して、図３
（ｃ）に示すように、これらの誘電体２間に導体板１５
を挟み込んで誘電体２を相互に半田付けして図３（ｄ）
に示すように結合する。さらに、図３（ｄ）の状態か
ら、側面の導体膜を研磨して、図３（ｅ）に示すよう
に、長さ寸法Ｌ，幅寸法Ｗでカッター等の切断手段を用
いて切断することによって、図３（ｆ）に示すように、
複数の平板型共振器１を製作する。複数の平板型共振器
１のそれぞれは、図１に示す平板型共振器１と同様な寸
法形状が得られる。Another method of manufacturing the flat plate type resonator 1 is shown in FIG. In FIG. 3A, the length dimension is 2 L and the width is l (l
Is set arbitrarily), and a plate-shaped dielectric 2 processed to have a thickness dimension T / 2 is prepared. As shown in FIG.
As shown in (b), a conductive film is formed using means such as metal plating. Prepare two of these dielectrics 2 and
As shown in (c), a conductor plate 15 is provided between these dielectrics 2.
3 (d) by sandwiching the two and soldering the dielectrics 2 to each other.
Combine as shown in. Further, from the state shown in FIG. 3D, the conductor film on the side surface is polished, and as shown in FIG. 3E, the length L and the width W are cut using a cutting means such as a cutter. Therefore, as shown in FIG.
A plurality of flat plate type resonators 1 are manufactured. Each of the plurality of plate type resonators 1 has the same size and shape as the plate type resonator 1 shown in FIG.
【００１４】また、長さ寸法Ｌ、幅寸法ｌ、厚み寸法Ｔ
／２に加工された板状誘電体２の全面に、金属メッキ等
の手段を用いて導体膜を形成し、この誘電体板２を２つ
用意して、その間に導体板１５を挟み込んだ後、側面及
び開放端面６に位置する導体膜を研磨して、幅寸法Ｗで
カッタ等の切断手段を用いて切断することにより、複数
の平板型共振器を製作することもできる。、図４は図１
に示した平板型共振器１によって構成された誘電体フイ
ルタの構造を示している。図４に示す誘電体フィルタで
は平板型共振器１を２つ用いた場合の例を示している。
一方の平板型共振器１では紙面の右側（後面）の一端面
（短絡端面）５で短絡されており、他方の平板型共振器
１では紙面の左側（前面）の一端面（短絡端面）５で短
絡されている。また、平板型共振器１には、短絡されて
いない他端面（開放端面）６の近傍に各々入出力用の静
電結合用誘電体８がそれぞれ接合されている。さらに静
電結合用誘電体８の外面には静電結合用導体膜９が取り
付けられている。また、これらの平板型共振器１の外側
には２枚の接地導体板９が平板型共振器１全体を覆うよ
うな形で互いに結合される。さらに、一方の静電結合用
導体膜９には電気接続用の入力端子１１が接続され、他
方の静電結合用導体膜９には出力端子１２が接続され
る。The length L, width l, and thickness T
After a conductor film is formed on the entire surface of the plate-shaped dielectric body 2 processed to 1/2 by means such as metal plating, two dielectric plates 2 are prepared, and the conductor plate 15 is sandwiched between them. It is also possible to fabricate a plurality of flat plate resonators by polishing the conductor film located on the side surface and the open end surface 6 and cutting the conductor film with a width dimension W using a cutting means such as a cutter. 4 is shown in FIG.
2 shows a structure of a dielectric filter constituted by the flat plate resonator 1 shown in FIG. The dielectric filter shown in FIG. 4 shows an example in which two flat plate resonators 1 are used.
One flat plate resonator 1 is short-circuited at one end face (short-circuited end face) 5 on the right side (rear face) of the paper, and the other flat plate resonator 1 is one end face (short-circuited end face) 5 on the left side (front face) of the paper. Shorted with. Further, in the flat plate type resonator 1, electrostatic coupling dielectrics 8 for input and output are respectively joined near the other end face (open end face) 6 which is not short-circuited. Further, an electrostatic coupling conductor film 9 is attached to the outer surface of the electrostatic coupling dielectric 8. Further, two ground conductor plates 9 are coupled to each other outside the flat plate resonator 1 so as to cover the whole flat plate resonator 1. Further, an input terminal 11 for electrical connection is connected to one of the electrostatic coupling conductor films 9, and an output terminal 12 is connected to the other electrostatic coupling conductor film 9.
【００１５】図４において、各平板型共振器１の隣接側
面間は平板型共振器１から漏れ出した電磁界が相互に干
渉し合うので、相互に結合を持っている。またこれらの
平板型共振器１は静電結合用誘電体８および静電結合用
導体９を介して電気接続用の入力及び出力端子１１，１
２に接続されているので、全体として入出力端子１０，
１１の間では平板型共振器１の共振周波数の近傍を通過
帯域とするフィルタが構成できる。In FIG. 4, the electromagnetic fields leaking from the flat plate resonators 1 interfere with each other between adjacent side surfaces of the flat plate resonators 1 and thus have mutual coupling. Further, these plate type resonators 1 have input and output terminals 11, 1 for electrical connection through a dielectric 8 for electrostatic coupling and a conductor 9 for electrostatic coupling.
2 is connected to the input / output terminal 10,
A filter having a pass band in the vicinity of the resonance frequency of the flat plate type resonator 1 can be formed between 11 and 11.
【００１６】また、平板型共振器１間の結合の強さは平
板型共振器１間の間隔に反比例するので、平板型共振器
１間の間隔を狭くすれば誘電体フィルタとしての帯域幅
は広くなる。また、間隔を広くすれば帯域幅は狭くな
る。Since the strength of the coupling between the plate type resonators 1 is inversely proportional to the distance between the plate type resonators 1, if the distance between the plate type resonators 1 is narrowed, the bandwidth of the dielectric filter is reduced. Get wider Also, the wider the interval, the narrower the bandwidth.
【００１７】[0017]
【発明の効果】以上実施例に明記の通り、本発明の平板
型共振器を用いた誘電体フィルタ及び平板型共振器の製
造方法によれば、平板型共振器のＱ値を向上させ、通過
帯域での伝送損失が小さく、阻止帯域における減衰量が
大きく、しかも立ち上り特性が良い誘電体フィルタを実
現できる。工程数が少なく、コストも廉価な量産に適し
た製作ができる。As described above in the embodiments, according to the dielectric filter using the flat plate resonator and the method for manufacturing the flat plate resonator of the present invention, the Q value of the flat plate resonator is improved and the flat plate resonator passes. It is possible to realize a dielectric filter that has a small transmission loss in the band, a large amount of attenuation in the stop band, and good rise characteristics. The number of processes is small, and the cost is low, and it is possible to manufacture suitable for mass production.
【図１】本発明の平板型共振器の一実施例を示す側面図
である。FIG. 1 is a side view showing an embodiment of a flat plate resonator of the present invention.
【図２】平板型共振器のＱ値を測定した結果を示すグラ
フである。FIG. 2 is a graph showing the results of measuring the Q value of a plate resonator.
【図３】図１の平板型共振器の製造方法の一実施例を説
明する説明図であって、（ａ）は誘電体の斜視図、
（ｂ）は誘電体に導体膜を形成した状態の斜視図、
（ｃ）は（ｂ）の誘電体を２つ用意し、誘電体間に導体
板を挟む状態の斜視図、（ｄ）は誘電体間に導体板を挟
んだ状態の斜視図、（ｅ）は（ｄ）の誘電体を切断した
状態の斜視図、（ｆ）は（ｅ）により得られた平板型共
振器を示す斜視図である。3A and 3B are explanatory views illustrating an embodiment of a method of manufacturing the flat-plate resonator of FIG. 1, wherein FIG. 3A is a perspective view of a dielectric,
(B) is a perspective view of a state in which a conductor film is formed on the dielectric,
(C) is a perspective view of a state in which two dielectrics of (b) are prepared and a conductor plate is sandwiched between the dielectrics, (d) is a perspective view of a conductor plate sandwiched between the dielectrics, (e). [Fig. 4] is a perspective view of the state in which the dielectric of (d) is cut, and (f) is a perspective view showing the flat-plate resonator obtained in (e).
【図４】図１の平板型共振器を用いた誘電体フィルタの
分解斜視図である。FIG. 4 is an exploded perspective view of a dielectric filter using the flat resonator of FIG.
【図５】従来の平板型共振器を示す斜視図である。FIG. 5 is a perspective view showing a conventional flat plate resonator.
１ 平板型共振器 ２ 誘電体 ３ 第１の導体膜 ４ 第２の導体膜 ５ 一端面（短絡端面） ６ 他端面（開放端面） ８ 静電結合用誘電体 ９ 静電結合用導体膜 １０ 接地導体板 １１ 入力端子 １２ 出力端子 １４ 第３の導体膜 １５ 導体板 DESCRIPTION OF SYMBOLS 1 Flat plate resonator 2 Dielectric 3 First conductor film 4 Second conductor film 5 One end face (short-circuited end face) 6 The other end face (open end face) 8 Electrostatic coupling dielectric 9 Conductive coupling conductive film 10 Ground Conductor plate 11 Input terminal 12 Output terminal 14 Third conductor film 15 Conductor plate
───────────────────────────────────────────────────── フロントページの続き (72)発明者 矢野 健 神奈川県川崎市高津区子母口398番地 株 式会社トーキン内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Ken Yano 398 Komokuchi, Takatsu-ku, Kawasaki City, Kanagawa Prefecture
Claims (4)
び該側面を直交する両端面のうちの一方の端面に形成し
た導体膜を有している誘電体を含み、該誘電体の少なく
とも２つを上記一対の側面のうち一方の側面で対向し、
前記誘電体とともに前記導体膜間に挟み重ね合わせ結合
した導体板を有していることを特徴とする平板型共振
器。1. A dielectric comprising a pair of side surfaces each having a rectangular prism shape and facing each other, and a conductor film formed on one end surface of both end surfaces orthogonal to the side surfaces, and at least the dielectric material. The two are opposed to each other on one of the side surfaces,
A flat plate resonator comprising a conductor plate which is sandwiched between the conductor films together with the dielectric and is superposed and coupled.
も１つを用い、複数の平板型共振器を互いに所定の間隔
おいて配列した接地導体板と、両端に位置する前記平板
型共振器にそれぞれ接続した静電結合用誘電体と、該静
電結合用誘電体の一方に接続した入力端子と、該静電結
合用誘電体の他方に接続した及び出力端子とを有してい
る誘電体フィルタ。2. A grounding conductor plate in which at least one flat plate resonator according to claim 1 is used, and a plurality of flat plate resonators are arranged at predetermined intervals, and the flat plate resonators located at both ends. A dielectric having a dielectric for electrostatic coupling connected to each of the dielectrics, an input terminal connected to one of the dielectrics for electrostatic coupling, and an output terminal connected to the other of the dielectric for electrostatic coupling. Body filter.
の寸法に切断し、該誘電体の相対向する一対の側面及び
該側面を直交する両端面のうちの一方の端面に導体膜を
形成し、その後、前記側面の前記導体膜を相対向して少
なくとも２つの前記誘電体の間に導体板を挟み込み少な
くとも前記２つの誘電体を結合する平板型共振器の製造
方法。3. A conductor film is formed by cutting a dielectric into a size of a flat plate resonator having a quadrangular prism shape, and a pair of side faces of the dielectric facing each other and one end face of both end faces orthogonal to each other. And a conductive plate is sandwiched between at least two dielectrics so that the conductive films on the side surfaces face each other, and at least the two dielectrics are coupled to each other.
体を少なくとも２つ用意して、少なくとも該２つの誘電
体間に導体板を挟み込んで少なくとも該２つの誘電体及
び前記導体板を相互に結合し、前記誘電体を四角柱形を
呈する平板型共振器の寸法に切断し、複数の平板型共振
器を作る平板型共振器の製造方法。4. A conductor film is formed on the entire surface of a dielectric, at least two dielectrics are prepared, and a conductor plate is sandwiched between at least the two dielectrics, and at least the two dielectrics and the conductor plate. A method for manufacturing a flat plate resonator, in which a plurality of flat plate resonators are manufactured by cutting the dielectric material into dimensions of a flat plate resonator having a rectangular prism shape by coupling the two to each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34780292A JPH06204721A (en) | 1992-12-28 | 1992-12-28 | Dielectric filter employing flat plate resonator and manufacture of flat plate resonator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34780292A JPH06204721A (en) | 1992-12-28 | 1992-12-28 | Dielectric filter employing flat plate resonator and manufacture of flat plate resonator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06204721A true JPH06204721A (en) | 1994-07-22 |
Family
ID=18392686
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP34780292A Pending JPH06204721A (en) | 1992-12-28 | 1992-12-28 | Dielectric filter employing flat plate resonator and manufacture of flat plate resonator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06204721A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5734306A (en) * | 1993-09-28 | 1998-03-31 | Adc Solitra Oy | Coaxial resonator and filter having a module block construction |
-
1992
- 1992-12-28 JP JP34780292A patent/JPH06204721A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5734306A (en) * | 1993-09-28 | 1998-03-31 | Adc Solitra Oy | Coaxial resonator and filter having a module block construction |
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