JPS59101902A - Dielectric filter - Google Patents
Dielectric filterInfo
- Publication number
- JPS59101902A JPS59101902A JP21139082A JP21139082A JPS59101902A JP S59101902 A JPS59101902 A JP S59101902A JP 21139082 A JP21139082 A JP 21139082A JP 21139082 A JP21139082 A JP 21139082A JP S59101902 A JPS59101902 A JP S59101902A
- Authority
- JP
- Japan
- Prior art keywords
- filter
- dielectric
- metal plate
- screw
- dielectric filter
- 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/20—Frequency-selective devices, e.g. filters
- H01P1/201—Filters for transverse electromagnetic waves
- H01P1/205—Comb or interdigital filters; Cascaded coaxial cavities
- H01P1/2056—Comb filters or interdigital filters with metallised resonator holes in a dielectric block
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
Description
【発明の詳細な説明】
(1)発明の技術分野
本発明はvkIF帯及びU HF帯の熱綜装置に用いら
れる誘電体フィルタに係り、特に誘電体フィ、ルタの取
付構造に関するものである。DETAILED DESCRIPTION OF THE INVENTION (1) Technical Field of the Invention The present invention relates to a dielectric filter used in thermal welding devices in the VKIF band and UHF band, and particularly relates to a mounting structure for a dielectric filter and filter.
(2)技術の背景
一般に、移動無線と呼ばれる携帯無線装Uや車載無線装
置に用いられるフィルタは、小屋、軽量かつ温度変化に
対する影響の少いものが要求される。このため、最近こ
れらの無線装置には、ヘリカルフィルり等に比べて小型
、軽量かつ温度液化の少い誘電体フィルタが多用されて
いる。(2) Background of the Technology In general, filters used in portable radio equipment U called mobile radio equipment and in-vehicle radio equipment are required to be lightweight and less affected by temperature changes. For this reason, recently, dielectric filters, which are smaller, lighter, and less likely to liquefy at temperature than helical filters, are often used in these wireless devices.
この種の誘電体フィルタは、一般に、上面を除き、底面
及び側面にメタライズして外部尋体膜七設けた直方体状
の誘電体ブロックに、上下方向に軸線を有し内面にメタ
ライズして内部導体FAを有する複数個の貫通穴(共振
用穴)を設け、かつ該ブロック両端部に外部回路と接続
するための励振体ヲ設けて、バンドパス・フィルタ (
BPF;W域通過フィルタ) として構成されている。This type of dielectric filter generally consists of a rectangular parallelepiped-shaped dielectric block, which has an external conductor film that is metallized on the bottom and side surfaces except for the top surface, and an internal conductor that has an axis in the vertical direction and is metallized on the inside surface. A band-pass filter (
It is configured as a BPF (W band pass filter).
そして、従来は通常、この誘電体ブロックがフィルタ筐
体内に収容されて誘電体フィルタとして形成式れ、この
フィルタ置体が他の種々の電子部品と共に無線装置筐体
に実装される場合が多かった。しかし、最近の携帯無線
装&や車載無線装置においては、フィルタの特性ケ若干
犠牲にしても、さらに小型のフィルタを必要とする場合
がある。このような場合には、フィルタ筐体に収容され
ないで8%体ブロック自体が誘電体フィルタとして無線
装置の筐体に取付けられる。しかし、この上うな誘電体
フィルタの取付構造に関しては種々の課題が残されてい
る。すなわち、この種のU電体フィルタとしては、移動
体の無線装置特有の環境条件である振動、衝撃等による
悪影9をうけないように、無線装置筐体にしっかり固定
される必要があり、また一方では、無線装置のA且立作
業性、保守性等の観点から装置筐体に容易に着脱可能な
構造を有するものであることが望ましい。Conventionally, this dielectric block was usually housed in a filter housing to form a dielectric filter, and this filter holder was often mounted in the wireless device housing together with various other electronic components. . However, in recent portable wireless devices and in-vehicle wireless devices, even smaller filters may be required, even if the characteristics of the filters are slightly sacrificed. In such a case, the 8% body block itself is attached to the housing of the wireless device as a dielectric filter without being housed in the filter housing. However, various problems remain with regard to the mounting structure of such a dielectric filter. In other words, this type of U electric body filter needs to be firmly fixed to the wireless device housing so as not to be affected by the negative effects 9 caused by vibrations, shocks, etc., which are environmental conditions specific to mobile wireless devices. On the other hand, it is desirable that the wireless device has a structure that can be easily attached to and detached from the device housing from the viewpoints of ease of operation, maintenance, etc. of the wireless device.
(3)従来技術と問題点
従来のこのfmの肪箪体フ4/レタの取付方法としては
、誘電体ブロックの導体膜を有する面を無線装置筐体(
又はプリント基板)にノ・ンダ付等により固着して取付
けるか、又は押え金具等を介して同様にノ・ンダ付等に
より固着する方法が採らttていた。このようなノ)ン
ダ付による取付構造はフィルタを確実に装置筐体に固定
化することができ、装置の振動、@磐等の悪影tli、
をうけることがないという利点があるが、その反面次の
ような欠点がある。(3) Prior Art and Problems The conventional method for attaching the FM's fat cabinet frame 4/letter is to attach the surface of the dielectric block having the conductive film to the wireless device housing (
or a printed circuit board), or by using a presser metal fitting or the like, and similarly fixing it by soldering or the like. This type of mounting structure with solder allows the filter to be securely fixed to the device housing, and prevents vibrations of the device, negative effects such as @rock, etc.
It has the advantage of not being subject to any damage, but on the other hand, it has the following disadvantages.
(イ)、ハンダ付時の加熱により、他の実装電−1部品
に対する悪影響ケさけるために、誘電体フィルタを最初
に装置筐体に取付ける必要がおり、このため装置組立時
における部品取付手順が制約され組立の作業性が良くな
い。(a) In order to avoid harmful effects on other mounted electronic components due to heating during soldering, it is necessary to first attach the dielectric filter to the device housing, and for this reason, the component installation procedure when assembling the device is difficult. Due to restrictions, assembly workability is not good.
(ロ)、試験調艶、保守交換、修理等のためフィルタを
取り外す必要がある場合、装置筐体とフィルタ全加熱し
て取り外すことになり、非常に煩雑で手間がかかると共
に、この加熱により他の実装電子部品に悪影響を与え易
くきわめて保守性が良くない。(b) When it is necessary to remove the filter for test toning, maintenance replacement, repair, etc., the device housing and filter must be completely heated before being removed, which is very complicated and time-consuming, and this heating may cause other This tends to have a negative effect on mounted electronic components and is extremely difficult to maintain.
(ハ)、ハンダ付するために、装置筐体と導体膜の材料
を互にハンダ付し易い材料に選定する必要があり、これ
らの材料が制約される。(c) For soldering, it is necessary to select materials for the device casing and the conductor film that are easy to solder to each other, and these materials are restricted.
(4)発明の目的
本発明は、上記従来の欠点に鑑み、ノ・ンダ付による加
熱を必要とせずに、無線装置筐体に着脱可能でしかも確
実に固定できる構造を有する誘電体フィルタを提供する
ことを目的とするものである。(4) Purpose of the Invention In view of the above-mentioned conventional drawbacks, the present invention provides a dielectric filter having a structure that can be detachably attached to and securely fixed to a wireless device housing without requiring heating by soldering. The purpose is to
(5)発明の構成
そして、この目的を達成するために、本発明に依れば、
誘電体ブロックに複数個の貫通穴を所定間隔をもって形
成すると共に該貫通穴の開口を含む1表面を除いた他の
5表面及び前記貫通穴の所定穴の内面に導体Pjkt設
け、かつ外部回路と接続するための入出力用励振体を設
けて成るコムライン形銹電体フィルタにおいて、前記誘
電体ブロックの導体膜を有する面にフィルタ取付用の金
属性板を設けたこと全特徴ξする誘電体フィルタが提供
される。(5) Structure of the invention In order to achieve this object, according to the present invention,
A plurality of through holes are formed in a dielectric block at predetermined intervals, and conductors Pjkt are provided on five surfaces other than one surface including the opening of the through hole and on the inner surface of a predetermined hole of the through hole, and a conductor Pjkt is provided on the inner surface of a predetermined hole of the through hole. A combline type rust electric filter comprising an input/output exciter for connection, wherein a metal plate for mounting the filter is provided on the surface of the dielectric block having a conductive film. A filter is provided.
(6) 発明の実施例
以下、本発明の実施例を図面に基づいて詳細に説明する
。(6) Embodiments of the invention Hereinafter, embodiments of the invention will be described in detail based on the drawings.
第1図から第5図は本発明に依る誘電体ブロックの実施
例を説明するだめの図である。1 to 5 are diagrams for explaining an embodiment of a dielectric block according to the present invention.
第1図と第2図は本発明の第1実施例を示す図で、第1
図は誘電体フィルタの斜視図、第2図は第1図り誘電体
フィルタを無線装置の筐体に取付けた状態金示す図であ
る。両図において、符号10は誘電体フィルタ全体を示
し、11は誘電体ブロック、12.13,14.15は
貫通穴、16.17は外部回路と接続するための人出用
励振体、20はフィルタ取付用の金属板、20c、20
dはねじ取付穴をそれぞれ示す。誘電体ブロック11は
直方体状に形成され、上面を除く他の5面(側面と底面
)にそれぞれ厚膜焼成等の手法によりメタライズされた
導体膜(図中、クロスハツチングで示す)llaが設け
られ、これらの導体膜11aが外部導体として形成され
ている。さらに、ブロック11に複数個の貫通穴12,
13,14.15が形成され、これら貫通穴の内面に、
それぞれ前記外部導体膜と同様にして形成された導体g
(図中、クロスハツチングで示す)12a、13a、1
4a。FIG. 1 and FIG. 2 are diagrams showing a first embodiment of the present invention.
This figure is a perspective view of the dielectric filter, and FIG. 2 is a diagram showing the dielectric filter shown in the first diagram attached to the casing of a wireless device. In both figures, reference numeral 10 indicates the entire dielectric filter, 11 is a dielectric block, 12, 13, 14, 15 are through holes, 16, 17 is an exciter for connecting with an external circuit, and 20 is an exciter for connecting to an external circuit. Metal plate for filter installation, 20c, 20
d indicates each screw mounting hole. The dielectric block 11 is formed in the shape of a rectangular parallelepiped, and conductor films (indicated by cross hatching in the figure) lla are provided on each of the other five surfaces (side surfaces and bottom surface) except for the top surface, which are metalized by a method such as thick film firing. These conductor films 11a are formed as external conductors. Furthermore, the block 11 has a plurality of through holes 12,
13, 14, and 15 are formed, and on the inner surface of these through holes,
A conductor g formed in the same manner as the external conductor film, respectively.
(Indicated by crosshatching in the figure) 12a, 13a, 1
4a.
15aが設けられ、これらの導体膜が内部導体として形
成されている。これにより貫通穴12.13゜14.1
5は穴の深さく内部導体膜の深さ)t%波長とする周波
数で共振するへ波長共振素子(共振用穴)として形成さ
れる。励振体16,17は、金属棒からなり、メタライ
ズされていない穴18゜19にそれぞれ挿入されて配設
され、外部回路と接続されると共に、共振素子(共振用
穴)12゜15とそれぞれ電界結合するように設けられ
ている。従って、この誘電体フィルタは4個の共振素子
12.13.14.15を有する4段構成のバンド・パ
ス・フィルタ(BPF)とし王形成されている。15a are provided, and these conductor films are formed as internal conductors. This allows the through hole 12.13°14.1
5 is formed as a wavelength resonant element (resonant hole) that resonates at a frequency of t% wavelength (the depth of the hole is the depth of the internal conductor film). The exciter bodies 16 and 17 are made of metal rods, and are inserted into non-metallized holes 18 and 19, respectively, and are connected to an external circuit and connected to the resonant elements (resonance holes) 12 and 15, respectively, in an electric field. provided to be coupled. Therefore, this dielectric filter is formed into a four-stage band pass filter (BPF) having four resonant elements 12, 13, 14, and 15.
さて、誘一体ブロック11の底面に、ハンダ付等の接着
手段により、フィルタ取付用の金属板20が固着されて
いる。そして、金属板20の突出部20 a、 20
bにねじ取付穴20 c、 20 dが貫通して設けら
れている。このねじ取付穴20 c。Now, a metal plate 20 for attaching a filter is fixed to the bottom surface of the dielectric block 11 by adhesive means such as soldering. Then, the protrusions 20 a, 20 of the metal plate 20
Screw mounting holes 20c and 20d are provided through the hole b. This screw mounting hole 20c.
20dは、ねじ付人又は単にねじを挿通するための挿通
穴、いずれに形成してもよい。第2図は、ねじ取付穴2
0 c、 20 d f挿通穴に形成して、誘電体フィ
ルタlOを無線装置筐体21に設けた凹所22内に取り
付けた状uを示している。すなわちこの場合は、凹所2
2の底壁22aにねじ付穴會設けて、締付ねじ23.2
4iそれぞれ上方から挿通穴20 c、 20 dを通
して底壁22aのねじ付人にねじ込むことにより、金属
板20が底壁22a上に固定される。また、ねじ取付穴
20 c、 20 dを今度はねじ付人に形成した場合
は、凹所22の底壁22aに挿通穴を設け、締付ねじ2
3.24を下方から底壁22aの挿通穴を通して金属板
20のねじ付人20 c、 20 dにねじ込むことに
より、金属板20は前記の場合と1T3J様に底壁22
a上に固定される。従って、ねじ取付穴20c、20d
kねじ付人又は挿通穴のいずれに形成するかの選定は、
装置筐体21の全体形状、他の電子部品の取付位置等を
考慮して、締付ねじ23.24の締付作業がいずれの場
合がより容易でおるかによって決定すればよい。このよ
うに装置筐体21の凹所22内にフィルタlOを配置す
ることは、凹所22aの側壁22bによって他の電子部
品との電界的干渉が防止されるのでフィルタlOの特性
上好ましい。また、凹所22を形成することは、この種
の装置筐体21には他の電子部品を実装するための種々
の凹所が形成されるため、 これらの凹所と同時に形成
することができるので製造コスト上からみてほとんど不
利にならない。勿論、フィルタ10は装置筐体21の平
面部に取り付けてもよい。そして、金属板20が装置筐
体21上に全面的に接触して固定されるのでアース特性
に関しても全く問題なくフィルタ10を取シ付けること
ができる。20d may be formed as a screw hole or simply an insertion hole for inserting a screw. Figure 2 shows screw mounting hole 2.
0 c, 20 d f are formed in the insertion holes, and the dielectric filter lO is shown in a state u attached to the recess 22 provided in the wireless device housing 21. In other words, in this case, recess 2
A threaded hole is provided in the bottom wall 22a of 2, and a tightening screw 23.2 is provided.
The metal plate 20 is fixed on the bottom wall 22a by screwing them into screws on the bottom wall 22a through the insertion holes 20c and 20d from above, respectively. In addition, when the screw mounting holes 20 c and 20 d are formed as screw holes, an insertion hole is provided in the bottom wall 22 a of the recess 22 and the tightening screw 2
3.24 from below through the insertion hole of the bottom wall 22a and screwed into the screws 20c, 20d of the metal plate 20, the metal plate 20 is attached to the bottom wall 22 in the same manner as in the above case and 1T3J.
fixed on a. Therefore, screw mounting holes 20c and 20d
K To select whether to form a screw attachment or an insertion hole,
The decision may be made based on which case makes it easier to tighten the tightening screws 23 and 24, taking into consideration the overall shape of the device housing 21, the mounting positions of other electronic components, and the like. Arranging the filter IO in the recess 22 of the device housing 21 in this way is preferable in view of the characteristics of the filter IO, since electric field interference with other electronic components is prevented by the side wall 22b of the recess 22a. Furthermore, since various recesses for mounting other electronic components are formed in this type of device housing 21, the recess 22 can be formed at the same time as these recesses. Therefore, there is almost no disadvantage in terms of manufacturing costs. Of course, the filter 10 may be attached to the flat surface of the device housing 21. Since the metal plate 20 is fixed in full contact with the device casing 21, the filter 10 can be mounted without any problems regarding grounding characteristics.
このように構成することによp1本実施例の誘電体フィ
ルタは、きわめて着脱が容易となシ、しかもハンダ付等
の場合のように加熱する必要がないので、無線装置組立
時において他の電子部品を実装してから最後に取付ける
ことができ、このため使用周波数の賀史等によシ、当初
予定していた誘電体フィルタと別のフィルタを取り付け
る必要が生じた場合などはきわめて便利である。勿論、
最初に取り付けておいても他のフィルタと簡単に交換す
ることができる。従って、このように簡便に着脱可能な
構造を有する本実施例は無線装置の組立作業を簡易化さ
せると共に保守性の向上を図ることができる。With this configuration, the dielectric filter of this embodiment is extremely easy to attach and detach, and there is no need to heat it as required when soldering, so it can be easily attached to other electronic devices when assembling the wireless device. It can be installed at the end after the components have been mounted, which is extremely convenient when it becomes necessary to install a dielectric filter different from the originally planned dielectric filter due to the frequency of use, etc. . Of course,
Even if you install it first, you can easily replace it with another filter. Therefore, this embodiment, which has such a structure that can be easily attached and detached, can simplify the assembly work of the wireless device and improve maintainability.
第3図は本発明の第2実施例を示す縦断面図である。尚
、この第3図から第5図において、前出の第1図と同一
部分には第1図と同一符号を付し、それらの説明は省略
する。第3図において、符号10′は誘電体フィルタ全
体を示し、そして25は、第1実施例(第1図)と同様
にしてブロック11の底面に固着された金属板を示す。FIG. 3 is a longitudinal sectional view showing a second embodiment of the present invention. Note that in FIGS. 3 to 5, the same parts as in FIG. 1 described above are given the same reference numerals as in FIG. 1, and their explanation will be omitted. In FIG. 3, reference numeral 10' indicates the entire dielectric filter, and 25 indicates a metal plate fixed to the bottom surface of the block 11 in the same manner as in the first embodiment (FIG. 1).
金属板25には貫通穴12と15にそれぞれ対応してね
じ付人25aと25bが設けられている。このねじ付人
25 a、 25 bにねじ(図示なし)を第1実施例
の場合と同じ要領で下方からねじ込むことによって、誘
電体フィルタ10′が装置筐体に固定される。この第2
実施例は、第3図から明らかな如く、第1笑施例の金属
板20の突出部20 a、 20 bに相当する部分が
省略できるので、取付スペースカ第1実施例よりも縮少
されるという利点がある。The metal plate 25 is provided with screws 25a and 25b corresponding to the through holes 12 and 15, respectively. The dielectric filter 10' is fixed to the device housing by screwing screws (not shown) into the screw fittings 25a, 25b from below in the same manner as in the first embodiment. This second
As is clear from FIG. 3, in this embodiment, the parts corresponding to the protrusions 20a and 20b of the metal plate 20 in the first embodiment can be omitted, so the mounting space is smaller than in the first embodiment. It has the advantage of being
第4図は本発明の第3実施例を示す縦断面図である。同
図において、符号10“は誘電体フィルタ全体を示し、
そして26は前出の第1実施例と同様にしてブロック1
1の底面に固着された金属板を示す。金属板26の下面
に下方に突出する取付ねじ26 a、 26 bが設け
られている。この取付ねじ26 a、 26 bは装置
筐体に設けられた取付挿通穴(図示なし)に挿通後、取
付ねじ26a、’26bにナツト (図示なし)をねじ
込んで締付けることによって、フィルタlO“が装置筐
体に固定される。FIG. 4 is a longitudinal sectional view showing a third embodiment of the present invention. In the figure, the reference numeral 10'' indicates the entire dielectric filter;
26 is the block 1 in the same manner as in the first embodiment described above.
The metal plate fixed to the bottom of 1 is shown. Attachment screws 26 a and 26 b are provided on the lower surface of the metal plate 26 and project downward. After inserting the mounting screws 26a and 26b into mounting holes (not shown) provided in the device housing, the filter lO" is tightened by screwing nuts (not shown) into the mounting screws 26a and 26b. Fixed to the device housing.
この第3実施例も第2実施例と同様な利点を有している
。This third embodiment also has the same advantages as the second embodiment.
第5図は本発明の第4笑施例を示す縦断面図である。同
図において、符号101は誘電体フィルタ全体を示し、
27は111実施例と同様にしてブロック11の底面に
固着された金属板を示す。金属板27の上面側にブロッ
ク11の貫通穴12と15にそれぞれ嵌入する突起部2
7cと27de設けると共に該突起部の下方に延びる取
付ねじ27a。FIG. 5 is a longitudinal sectional view showing a fourth embodiment of the present invention. In the figure, reference numeral 101 indicates the entire dielectric filter,
Reference numeral 27 indicates a metal plate fixed to the bottom surface of the block 11 in the same manner as in the 111 embodiment. Projections 2 are provided on the upper surface of the metal plate 27 to fit into the through holes 12 and 15 of the block 11, respectively.
Mounting screws 27a are provided at 7c and 27de and extend below the protrusion.
27bが金属板、27の1面側に設けられている。A metal plate 27b is provided on one side of the metal plate 27.
この第4実施例の取付要領は前出第3実施例と同じであ
る。この第4実施例は、前出の第2実施例と同じ利点を
有すると共に、突起部27 c、 27 dがブロック
11の位置決めの役目を果す利点と、金属板27が薄板
の場合取付ねじ27 a、 27 bを安定して設ける
ことができるという利点がある。The installation procedure of this fourth embodiment is the same as that of the aforementioned third embodiment. This fourth embodiment has the same advantages as the second embodiment described above, and also has the advantage that the protrusions 27c and 27d serve to position the block 11, and when the metal plate 27 is a thin plate, the mounting screw 27 There is an advantage that a, 27 b can be provided stably.
尚、本発明は上記実施例に限定されるものではなく、例
えば金属板(20,25,26,27)をブロック11
の側面に固着して誘電体フィルタを構成することも可能
であり、また前記金属板自体の形状を必要に応じて種々
の形状に変形することも可能である。It should be noted that the present invention is not limited to the above embodiment, and for example, the metal plates (20, 25, 26, 27) are
It is also possible to configure a dielectric filter by fixing it to the side surface of the metal plate, and it is also possible to deform the shape of the metal plate itself into various shapes as necessary.
(7)発明の効果
以上、詳細に説明したように、本発明の誘電体フィルタ
は、誘電体ブロックの導体膜を有する面にフィルタ取付
用の金属状板を固着して設けることにより、フィルタの
着脱を可能とし、このため無線装置の組立作業性の向上
、保守性等の向上をもたらすといりた効果大なるものが
ある。(7) Effects of the Invention As explained in detail above, the dielectric filter of the present invention is provided by fixing a metal plate for filter attachment to the surface of the dielectric block having the conductive film. It is possible to attach and detach the wireless device, which has great effects such as improving the ease of assembly and maintenance of the wireless device.
第1図は本発明による誘電体フィルタの第1実施例の斜
視図、第2図は第1図の誘電体フィルタを無線装置の筐
体に取り付けた状態を示す縦断面図、第3図から第5図
はそれぞれ本発明の第2゜第3及び第4実施例を示す縦
断面図である。
10、10’、 10’、 10”・・・本発明の誘電
体フィルタ、11・・・誘電体ブロック、 lla・
・・導体膜(外部導体]、12.13,14.15・・
・貫通穴(共振用穴)、12a、 13a、 14a、
L5h=・導体膜(内部導体)、16.17・・・励
振体、 20.25.26.27・・・金属板、20
c、 20 d・・・ねじ取付穴、21・・・無線装置
の筐体、 22・・・装置筐体の凹所、23.24・・
・締付ねじ、 25 a、 25 b・・・ねじ付人、
26a、 26b、 27a、 27b−取付ねじ、2
7c、 27d・・・金属板(27)の突起部。
第1 図
第2図
ンンo 20c18 20 11a
19 2υd第3図
第4図
第5図FIG. 1 is a perspective view of a first embodiment of a dielectric filter according to the present invention, FIG. 2 is a longitudinal cross-sectional view showing the dielectric filter of FIG. 1 attached to a housing of a wireless device, and FIG. FIG. 5 is a longitudinal sectional view showing the second, third and fourth embodiments of the present invention, respectively. 10, 10', 10', 10''...Dielectric filter of the present invention, 11...Dielectric block, lla.
・・Conductor film (outer conductor), 12.13, 14.15・・
・Through holes (resonance holes), 12a, 13a, 14a,
L5h=・Conductor film (internal conductor), 16.17... Exciter, 20.25.26.27... Metal plate, 20
c, 20 d...screw mounting hole, 21...casing of wireless device, 22...recess in device casing, 23.24...
・Tightening screw, 25 a, 25 b...screw attacher,
26a, 26b, 27a, 27b - mounting screws, 2
7c, 27d...Protrusions of the metal plate (27). Figure 1 Figure 2 Nnn o 20c18 20 11a
19 2υdFigure 3Figure 4Figure 5
Claims (1)
をもって形成すると共に該貫通穴の開口を含む1表面を
除いた他の5表面及び前記貫通穴の所定穴の内面に導体
膜を設け、かつ外部回路と接続するための入出力用励振
体を設けて成るコムライン形誘電体フィルタにおいて、
前記誘電体ブロックの導体膜を有する面にフィルタ取付
用の金属性板を設りたことt%徴とする防電体フィルタ
。 2、前記金属性板にねじ取付穴を設けた特許請求の範囲
第1項に記載の誘電体フィルタ。 3、前記金属性板に取付ねじ缶設けた特許請求の範囲第
1項VC記載の誘電体フィルタ。 4、前記導体膜と対面する前記金属性板の表面上に突起
部を設け、該突起部食前記導体膜の設けられた貫通穴に
挿入可能に形成しかつ該突起部の反対側に延びる取付ね
じを設けた特許請求の範囲第3項に記載の誘電体フィル
タ。[Scope of Claims] 1. A number of through holes are formed at predetermined intervals in - dielectric blocks, and five surfaces other than one surface containing the opening of the through hole and a predetermined location of the through hole are formed. In a combline type dielectric filter, a conductive film is provided on the inner surface of the hole, and an input/output excitation body is provided for connection to an external circuit.
An electrically shielding filter characterized in that a metal plate for attaching the filter is provided on the surface of the dielectric block having the conductive film. 2. The dielectric filter according to claim 1, wherein the metal plate is provided with screw mounting holes. 3. The dielectric filter according to claim 1 VC, wherein a mounting screw can is provided on the metal plate. 4. A projection is provided on the surface of the metal plate facing the conductor film, and the projection is formed to be insertable into a through hole in the conductor film and extends to the opposite side of the projection. The dielectric filter according to claim 3, which is provided with a screw.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP21139082A JPS59101902A (en) | 1982-12-03 | 1982-12-03 | Dielectric filter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP21139082A JPS59101902A (en) | 1982-12-03 | 1982-12-03 | Dielectric filter |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS59101902A true JPS59101902A (en) | 1984-06-12 |
Family
ID=16605164
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP21139082A Pending JPS59101902A (en) | 1982-12-03 | 1982-12-03 | Dielectric filter |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS59101902A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6286703U (en) * | 1985-11-19 | 1987-06-03 | ||
EP0401839A2 (en) * | 1989-06-09 | 1990-12-12 | Lk-Products Oy | ceramic band-pass filter |
US5298873A (en) * | 1991-06-25 | 1994-03-29 | Lk-Products Oy | Adjustable resonator arrangement |
US5319328A (en) * | 1991-06-25 | 1994-06-07 | Lk-Products Oy | Dielectric filter |
US5349315A (en) * | 1991-06-25 | 1994-09-20 | Lk-Products Oy | Dielectric filter |
US5354463A (en) * | 1991-06-25 | 1994-10-11 | Lk Products Oy | Dielectric filter |
-
1982
- 1982-12-03 JP JP21139082A patent/JPS59101902A/en active Pending
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6286703U (en) * | 1985-11-19 | 1987-06-03 | ||
EP0401839A2 (en) * | 1989-06-09 | 1990-12-12 | Lk-Products Oy | ceramic band-pass filter |
USRE34898E (en) * | 1989-06-09 | 1995-04-11 | Lk-Products Oy | Ceramic band-pass filter |
US5298873A (en) * | 1991-06-25 | 1994-03-29 | Lk-Products Oy | Adjustable resonator arrangement |
US5319328A (en) * | 1991-06-25 | 1994-06-07 | Lk-Products Oy | Dielectric filter |
US5349315A (en) * | 1991-06-25 | 1994-09-20 | Lk-Products Oy | Dielectric filter |
US5354463A (en) * | 1991-06-25 | 1994-10-11 | Lk Products Oy | Dielectric filter |
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