JPH048643Y2 - - Google Patents
Info
- Publication number
- JPH048643Y2 JPH048643Y2 JP19501385U JP19501385U JPH048643Y2 JP H048643 Y2 JPH048643 Y2 JP H048643Y2 JP 19501385 U JP19501385 U JP 19501385U JP 19501385 U JP19501385 U JP 19501385U JP H048643 Y2 JPH048643 Y2 JP H048643Y2
- Authority
- JP
- Japan
- Prior art keywords
- holes
- conductive film
- open end
- end surface
- dielectric
- 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
- 229910052573 porcelain Inorganic materials 0.000 claims description 2
- 230000002093 peripheral effect Effects 0.000 description 9
- 239000000919 ceramic Substances 0.000 description 8
- 230000008878 coupling Effects 0.000 description 5
- 238000010168 coupling process Methods 0.000 description 5
- 238000005859 coupling reaction Methods 0.000 description 5
- 239000003990 capacitor Substances 0.000 description 4
- 238000001465 metallisation Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
Landscapes
- Control Of Motors That Do Not Use Commutators (AREA)
Description
【考案の詳細な説明】 考案の背景 技術分野 本考案は誘電体共振器に関する。[Detailed explanation of the idea] Background of the idea Technical field The present invention relates to a dielectric resonator.
先行技術とその問題点
誘電体共振器は、自動車電話用フイルタ、コー
ドレス電話、アンテナ共用器等に用いられてい
る。Prior Art and Its Problems Dielectric resonators are used in car phone filters, cordless telephones, antenna duplexers, and the like.
誘電体共振器としては、従来より、例えば、第
３図および第４図に示すような構成のブロツク型
のものが知られている。 As a dielectric resonator, a block type resonator having a structure as shown in FIGS. 3 and 4, for example, is conventionally known.
すなわち、チタン酸カルシウム−チタン酸マグ
ネシウム等を主成分とする誘電体磁器材料を用い
てブロツク状に形成された誘電体磁器１に、間隔
をおいて複数個の貫通孔２１，２２を設ける。そ
して、両面のうちの一面１０１を開放端面とし、
この開放端面１０１を除く全面１０２〜１０６お
よび貫通孔２１，２２の内周面にメタライズを施
して電気的に互いに導通する導電膜３１，３２，
３３を形成したものである。 That is, a plurality of through holes 21 and 22 are provided at intervals in a dielectric ceramic 1 formed in a block shape using a dielectric ceramic material whose main components are calcium titanate-magnesium titanate or the like. Then, one surface 101 of both surfaces is an open end surface,
Conductive films 31 and 32 are metallized on the entire surface 102 to 106 excluding the open end surface 101 and on the inner peripheral surfaces of the through holes 21 and 22 to electrically conduct each other.
33 was formed.
この誘電体共振器は、第５図に示すように、貫
通孔２１の導電膜３１および外周面の導電膜３３
の間に形成されるコンデンサC1、インダクタン
スL1による並列共振回路A1と、貫通孔２２の導
電膜３２および外周面の導電膜３３の間に形成さ
れたコノデンサC2、インダクタンスL2による並
列共振回路A2を、貫通孔２１，２２の導電膜３
１−３２間に形成される電磁気的な結合によつて
接続した等価回路として表現される。 As shown in FIG. 5, this dielectric resonator includes a conductive film 31 in the through hole 21 and a conductive film 33 on the outer peripheral surface.
A parallel resonant circuit A 1 formed between the capacitor C 1 and the inductance L 1 and a parallel resonance circuit A 1 formed between the conductive film 32 of the through hole 22 and the conductive film 33 on the outer peripheral surface of the conode capacitor C 2 and the inductance L 2 The resonant circuit A 2 is connected to the conductive film 3 of the through holes 21 and 22.
It is expressed as an equivalent circuit connected by electromagnetic coupling formed between 1 and 32.
上記結合は、フイルタとしての選択中心周波数
や帯域幅の決定に重要な役割りを果たしている。
この結合調整手段として、従来は、貫通孔２１，
２２の回りの開放端面１０１上に、容量パターン
となる導電膜４１，４２を、厚膜印刷焼付等の手
段によつて形成し、この導電膜４１，４２のパタ
ーンの選定によつて、必要とする結合を得てい
た。 The above combination plays an important role in determining the selected center frequency and bandwidth of the filter.
Conventionally, as this coupling adjustment means, through holes 21,
Conductive films 41 and 42, which will become a capacitive pattern, are formed on the open end surface 101 around the conductive film 22 by means such as thick film printing and baking, and by selecting the patterns of the conductive films 41 and 42, the required I was getting a bond to do that.
しかしながら、前記結合を得るに当つて、導電
膜４１，４２を所定位置に、所定のパターンとな
るように形成することが困難で、導電膜４１，４
２の印刷位置ズレ、パターン面積の変動等の影響
を受け、結合にバラツキを生じてしまうという問
題があつた。しかも、このようにして生じた結合
のバラツキを調整するには、導電膜４１，４２の
面積を減らしたり、あるいは増したりしなければ
ならない。このような調整方法は実際的に困難で
あつた。 However, in order to obtain the above-mentioned bond, it is difficult to form the conductive films 41 and 42 at predetermined positions and in a predetermined pattern.
There was a problem that variations in bonding occurred due to the influence of the printing position shift of No. 2, variations in pattern area, etc. Furthermore, in order to adjust the variations in bonding that have occurred in this way, the areas of the conductive films 41 and 42 must be reduced or increased. Such an adjustment method is difficult in practice.
また、このような問題を解決するため、例えば
第６図および第７図に示されるように、貫通孔間
のほぼ中間部に、両端の開いたスリツトを設ける
構造のものが提案されている。図面を用いて説明
すると、開放端面１０１における貫通孔２１およ
び２２の間のほぼ中間部に、両端が誘電体磁器１
の外周部に達してスリツト５を開口するように形
成される。 In order to solve this problem, a structure has been proposed in which a slit with both ends open is provided approximately in the middle between the through holes, as shown in FIGS. 6 and 7, for example. To explain with reference to the drawings, a dielectric ceramic 1 is provided at both ends of the open end surface 101 at approximately the middle between the through holes 21 and 22.
The slit 5 is formed so as to reach the outer periphery of the slit 5 and open the slit 5.
上記構成の誘電体共振器も、等価的に、第５図
に示したような回路となるが、貫通孔２１，２２
の内周面に形成された導電膜３１，３２と、外周
面に形成された導電膜３３の間に形成されるLC
並列共振回路A1，A2の結合を、スリツト５の幅
W1、深さh1等により調整することができる。 The dielectric resonator with the above configuration also equivalently becomes a circuit as shown in FIG.
LC formed between the conductive films 31 and 32 formed on the inner peripheral surface and the conductive film 33 formed on the outer peripheral surface.
The coupling between the parallel resonant circuits A 1 and A 2 is determined by the width of the slit 5.
It can be adjusted by W 1 , depth h 1 , etc.
このようなものでは、スリツトを形成する場合
ダイヤモンドカツタ等を用いて切込むが、精密な
加工精度が要求されており、その加工が困難とさ
れていた。 In such products, when forming the slits, a diamond cutter or the like is used to cut the slits, but this requires precise machining accuracy and has been considered difficult.
考案の目的
本考案の目的は、電磁気的な結合を調整する際
の加工が容易な誘電体共振器を提供することにあ
る。 Purpose of the invention The purpose of the invention is to provide a dielectric resonator that is easy to process when adjusting electromagnetic coupling.
考案の開示
このような目的は、下記の本考案によつて達成
される。 DISCLOSURE OF THE INVENTION These objects are achieved by the present invention described below.
すなわち、本考案は、誘電体磁器に複数の貫通
孔を設け、貫通孔を開口させた一方の面に開放端
面を形成するように、貫通孔の内周面および外面
にメタライズを施して導電膜を形成し、前記開放
端面において、貫通孔間を分断し前記外面の導電
膜に導通するように、導電膜を形成したことを特
徴とする誘電体共振器である。 That is, in the present invention, a plurality of through holes are provided in dielectric ceramic, and the inner and outer surfaces of the through holes are metallized so that an open end surface is formed on one side where the through holes are opened, and a conductive film is formed. The dielectric resonator is characterized in that a conductive film is formed on the open end surface so as to divide the through holes and to be electrically connected to the conductive film on the outer surface.
考案の具体的構成
以下、本考案の具体的構成について第１図およ
び第２図に示される実施例に従い詳細に説明す
る。 Specific Structure of the Invention Hereinafter, the specific structure of the invention will be described in detail according to the embodiment shown in FIGS. 1 and 2.
第１図および第２図は、本考案における誘電体
共振器の１例を説明するためのものであり、第１
図はその斜視図、第２図は第１図の縦断面図であ
る。 1 and 2 are for explaining one example of the dielectric resonator in the present invention, and the first
The figure is a perspective view thereof, and FIG. 2 is a longitudinal sectional view of FIG. 1.
本考案の誘電体共振器は、まずブロツク状に形
成された誘電体磁器１に、間隔をおいて複数個
（図示例では２個）の貫通孔２１，２２を開口さ
せる。そして、これらの貫通孔２１，２２の内周
面にそれぞれメタライズを施して導電膜３１，３
２を形成すると共に、前記誘電体磁器１の外周面
を構成する側面１０３，１０４，１０５，１０
６、ならびに貫通孔２１，２２を開口させた底面
１０２にメタライズを施して導電膜３４を形成す
る。 In the dielectric resonator of the present invention, first, a plurality of (two in the illustrated example) through holes 21 and 22 are opened at intervals in the dielectric ceramic 1 formed in the shape of a block. Then, metallization is applied to the inner peripheral surfaces of these through holes 21 and 22, respectively, to form conductive films 31 and 3.
2 and the side surfaces 103, 104, 105, 10 that constitute the outer peripheral surface of the dielectric ceramic 1.
6 and the bottom surface 102 in which the through holes 21 and 22 are opened are metalized to form a conductive film 34.
このようにして、貫通孔２１，２２を開口させ
た上面１０１は開放端面とされるが、この上面１
０１において、貫通孔２１，２２の開口端ほぼ中
間部に、両者を分断し、かつ誘電磁器１の外周面
の導電膜３４に導通するようにメタライズを施し
て導電膜６を形成する。このような導電膜６は図
示例ではストライプ状となつているが、その他の
形状であつてもよい。 In this way, the upper surface 101 with the through holes 21 and 22 opened is an open end surface.
In 01, a conductive film 6 is formed approximately in the middle of the opening ends of the through holes 21 and 22 by metallizing the two so as to separate them and to be electrically conductive to the conductive film 34 on the outer peripheral surface of the dielectric ceramic 1. Although such conductive film 6 has a striped shape in the illustrated example, it may have other shapes.
この場合、誘電体磁器１は、通常、直方体とす
るが、その形状は、複数個の貫通孔２１，２２を
形成できるものであれば制限はない。そして、そ
の体積は200〜30000mm3程度とする。 In this case, the dielectric ceramic 1 is usually a rectangular parallelepiped, but its shape is not limited as long as it can form a plurality of through holes 21 and 22. The volume is approximately 200 to 30,000 mm3 .
貫通孔は、通常２〜８個程度形成し、その断面
形状は通常円形とするが、それ以外であつてもよ
く、一般に、断面積1.5〜20mm2、長さ４〜40mm程
度とする。 Generally, about 2 to 8 through holes are formed, and the cross-sectional shape is usually circular, but it may be other shapes, and generally has a cross-sectional area of 1.5 to 20 mm 2 and a length of about 4 to 40 mm.
また、通常ストライプの幅は、0.1〜２mm程度、
長さは４〜20mm程度、厚さは１〜30μm程度とす
るが、その形状を変化させたり、幅を調整したり
することによつて、電磁気的な結合を調整するこ
とができる。 In addition, the width of the stripe is usually about 0.1 to 2 mm,
Although the length is approximately 4 to 20 mm and the thickness is approximately 1 to 30 μm, the electromagnetic coupling can be adjusted by changing the shape or adjusting the width.
さらには、前記した溝状のスリツトとの組合せ
も可能である。すなわち、スリツトの加工精度を
厳密に規定しなくても、スリツトを設けて、さら
にメタライズを施して補うこともできるし、スリ
ツトと導電膜とを別々の箇所に設けて調整するこ
ともできる。 Furthermore, a combination with the groove-shaped slit described above is also possible. That is, even if the processing accuracy of the slit is not strictly defined, it can be compensated for by providing the slit and further applying metallization, or it can be adjusted by providing the slit and the conductive film at different locations.
図示例では貫通孔２１，２２は２個設けられて
いるが、３個以上の貫通孔を設ける場合、各貫通
孔を分断するように、複数の導電膜が設けられる
ことが好ましい。この場合、各導電膜は、通常同
一の形状とするが、その形状、寸法は異なるもの
としてもよい。 In the illustrated example, two through holes 21 and 22 are provided, but when three or more through holes are provided, it is preferable that a plurality of conductive films be provided so as to divide each through hole. In this case, each conductive film usually has the same shape, but may have different shapes and dimensions.
そして、このような導電膜は、底面にも開放端
面を形成する場合、底面にも設けてもよい。 Such a conductive film may also be provided on the bottom surface when an open end surface is formed on the bottom surface as well.
なお、図示例では外周面を構成する側面１０３
〜１０６をすべてメタライズしているが、貫通孔
２１，２２の整列方向に位置する側面１０３，１
０４を開放端面としてもよい。さらには、対向側
面間に透孔ないし盲孔を形成してもよい。 In addition, in the illustrated example, the side surface 103 constituting the outer peripheral surface
106 are all metallized, but the side surfaces 103 and 1 located in the alignment direction of the through holes 21 and 22
04 may be an open end surface. Furthermore, a through hole or a blind hole may be formed between the opposing side surfaces.
メタライズは、金属ペーストを印刷する方法、
メツキ、蒸着などにより行う。また、アンテナ側
および送信器、受信器に結合する端子側に、コン
デンサを結合したり、貫通孔内にコンデンサを形
成したりしてもよい。 Metallization is a method of printing metal paste,
This is done by plating, vapor deposition, etc. Further, a capacitor may be coupled to the antenna side and the terminal side coupled to the transmitter and receiver, or a capacitor may be formed in the through hole.
さらには、これら誘電体共振器を複数個ブロツ
ク状に連続して帯域通過型フイルタとしたり、こ
れに帯域除去用フイルタを一体化したりすること
もできる。 Furthermore, a plurality of these dielectric resonators can be connected in a block to form a band-pass filter, or a band-eliminating filter can be integrated therein.
考案の具体的作用効果
本考案によれば、誘電体磁器に複数の貫通孔を
設け、貫通孔を開口させた一方の面に開放端面を
形成するように、貫通孔の内周面および外面にメ
タライズを施して導電膜を形成し、前記開放端面
において、貫通孔間を分断し前記外面の導電膜に
導通するように、導電膜を形成しているため、電
磁気的な結合を調整する際の加工が容易な誘電体
共振器が得られる。 Specific effects of the invention According to the invention, a plurality of through holes are provided in dielectric porcelain, and the inner circumferential surface and outer surface of the through hole are formed such that an open end surface is formed on one surface where the through holes are opened. A conductive film is formed by metallization, and the conductive film is formed on the open end surface so as to divide the through holes and conduct to the conductive film on the outer surface. A dielectric resonator that is easy to process can be obtained.
第１図は本考案の誘電体共振器の斜視図であ
り、第２図はその縦断面図である。第３図は従来
の誘電体共振器の斜視図であり、第４図はその縦
断面図であり、第５図はその等価回路図である。
第６図は従来の誘電体共振器の斜視図であり、第
７図はその縦断面図である。
符号の説明、１……誘電体磁器、１０１……上
面（開放端面）、１０２……底面、１０３〜１０
６……側面、２１，２２……貫通孔、３１，３
２，３３，３４……導電膜、４１，４２……導電
膜、５……スリツト、６……導電膜。
FIG. 1 is a perspective view of the dielectric resonator of the present invention, and FIG. 2 is a longitudinal sectional view thereof. FIG. 3 is a perspective view of a conventional dielectric resonator, FIG. 4 is a longitudinal sectional view thereof, and FIG. 5 is an equivalent circuit diagram thereof.
FIG. 6 is a perspective view of a conventional dielectric resonator, and FIG. 7 is a longitudinal sectional view thereof. Explanation of symbols, 1...Dielectric ceramic, 101...Top surface (open end surface), 102...Bottom surface, 103-10
6...Side surface, 21, 22...Through hole, 31, 3
2, 33, 34... Conductive film, 41, 42... Conductive film, 5... Slit, 6... Conductive film.
Claims (1)
口させた一方の面に開放端面を形成するように、
貫通孔の内周面および外面にメタライズを施して
導電膜を形成し、前記開放端面において、貫通孔
間を分断し前記外面の導電膜に導通するように、
導電膜を形成したことを特徴とする誘電体共振
器。 A plurality of through holes are provided in the dielectric porcelain, and an open end surface is formed on one side where the through holes are opened.
metallizing the inner circumferential surface and outer surface of the through hole to form a conductive film, and dividing the through holes at the open end surface so as to conduct to the conductive film on the outer surface;
A dielectric resonator characterized by forming a conductive film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19501385U JPH048643Y2 (en) | 1985-12-17 | 1985-12-17 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19501385U JPH048643Y2 (en) | 1985-12-17 | 1985-12-17 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62103302U JPS62103302U (en) | 1987-07-01 |
| JPH048643Y2 true JPH048643Y2 (en) | 1992-03-04 |
Family
ID=31152509
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19501385U Expired JPH048643Y2 (en) | 1985-12-17 | 1985-12-17 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH048643Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63124601A (en) * | 1986-11-14 | 1988-05-28 | Oki Electric Ind Co Ltd | Dielectric filter |
-
1985
- 1985-12-17 JP JP19501385U patent/JPH048643Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62103302U (en) | 1987-07-01 |
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