JP2597116Y2 - Coaxial bandpass filter - Google Patents
Coaxial bandpass filterInfo
- Publication number
- JP2597116Y2 JP2597116Y2 JP1993058013U JP5801393U JP2597116Y2 JP 2597116 Y2 JP2597116 Y2 JP 2597116Y2 JP 1993058013 U JP1993058013 U JP 1993058013U JP 5801393 U JP5801393 U JP 5801393U JP 2597116 Y2 JP2597116 Y2 JP 2597116Y2
- Authority
- JP
- Japan
- Prior art keywords
- input
- harmonic
- housing
- coaxial
- band
- 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 - Fee Related
Links
Landscapes
- Control Of Motors That Do Not Use Commutators (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本考案は、必要な周波数帯域の電
波を通過させ、不要な周波数帯域の電波を阻止する同軸
形帯域通過ろ波器に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coaxial band-pass filter for transmitting radio waves in a required frequency band and blocking radio waves in an unnecessary frequency band.
【０００２】[0002]
【従来の技術】従来の同軸形帯域通過ろ波器は、図５に
示すように、細長い直方体よりなる筐体１内にその底面
より立ち上げられて複数本の共振棒２が所定間隔で並設
され、これら共振棒２をそれぞれ中心として複数段の共
振器がそれぞれ構成されている。各共振棒２の並設方向
の両端に対応した筐体１の各板面には、同軸型の入出力
端子３がそれぞれ設けられている。これら同軸型の入出
力端子３の中心導体３ａは、隣接する共振棒２にそれぞ
れ接続されている。各共振棒２の上端に対応する筐体１
の板面には、各共振棒２の上端に対応した共振周波数調
整ビス４と各共振棒２の中間に対応した段間結合補正ビ
ス５とがネジ結合でそれぞれ貫通されている。2. Description of the Related Art As shown in FIG. 5, a conventional coaxial band-pass filter is raised from a bottom surface thereof in a housing 1 formed of an elongated rectangular parallelepiped and a plurality of resonance rods 2 are arranged at predetermined intervals. A plurality of resonators are respectively formed around the resonance rods 2. Coaxial input / output terminals 3 are provided on each plate surface of the housing 1 corresponding to both ends of the respective resonance rods 2 in the juxtaposition direction. The center conductors 3a of these coaxial input / output terminals 3 are connected to adjacent resonance rods 2, respectively. Housing 1 corresponding to the upper end of each resonance rod 2
On the plate surface, a resonance frequency adjusting screw 4 corresponding to the upper end of each resonance rod 2 and an inter-stage coupling correction screw 5 corresponding to the middle of each resonance rod 2 are respectively threaded through.
【０００３】このような同軸形帯域通過ろ波器は、共振
棒２の長さにより共振周波数が決定される。通常、その
共振棒２の長さが所要周波数の４分の１波長又は８分の
１波長近くに設定され、共振周波数調整ビス４にて所要
周波数帯域の通過特性が得られるように調整される。In such a coaxial band-pass filter, the resonance frequency is determined by the length of the resonance rod 2. Normally, the length of the resonance rod 2 is set to a quarter wavelength or a quarter wavelength of the required frequency, and the resonance frequency adjusting screw 4 is adjusted so as to obtain a pass characteristic of a required frequency band. .
【０００４】ところで、このような同軸形帯域通過ろ波
器では、共振棒２の長さの４分の３波長で共振する周波
数の電波が一般に３倍波と呼ばれている。By the way, in such a coaxial band-pass filter, a radio wave having a frequency resonating at three quarters of the length of the resonance rod 2 is generally called a third harmonic.
【０００５】従来のこの種の同軸形帯域通過ろ波器で
は、３倍波が通過する特性を有していた。A conventional coaxial band-pass filter of this type has a characteristic that a third harmonic passes therethrough.
【０００６】この３倍波を阻止する同軸形帯域通過ろ波
器としては、低域通過ろ波器、有極ろ波器等が提案され
ている。As a coaxial band-pass filter for blocking the third harmonic, a low-pass filter, a polarized filter and the like have been proposed.
【０００７】[0007]
【考案が解決しようとする課題】しかしながら、このよ
うな従来の３倍波を阻止する同軸形帯域通過ろ波器で
は、回路が複雑化する問題点があり、また狭帯域の減衰
しかとれず、性能が不十分となる問題点があった。However, such a conventional coaxial band-pass filter that blocks the third harmonic has a problem that the circuit becomes complicated, and a narrow band attenuation can be obtained. There was a problem that performance was insufficient.
【０００８】本考案の目的は、所要の周波数帯域に影響
を与えず、３倍波を広帯域にわたり減衰させることがで
きる同軸形帯域通過ろ波器を提供することにある。It is an object of the present invention to provide a coaxial band-pass filter capable of attenuating a third harmonic over a wide band without affecting a required frequency band.
【０００９】[0009]
【課題を解決するための手段】上記の目的を達成する本
考案の構成を説明すると、本考案は筐体内に複数本の共
振棒が所定間隔で並設され、前記各共振棒の並設方向の
両端には入出力端子が設けられている同軸形帯域通過ろ
波器において、前記各入出力端子が設けられている前記
筐体の各板面側には、当該入出力端子に隣接する前記共
振棒の脇を通り過ぎる長さをもった３倍波抑制素子がそ
れぞれ設けられていることを特徴とする。In order to achieve the above object, the present invention will be described. In the present invention, a plurality of resonance rods are juxtaposed at a predetermined interval in a housing, and a direction in which the resonance rods are juxtaposed. In the coaxial band-pass filter in which input / output terminals are provided at both ends of the housing, the respective input / output terminals are provided on each plate surface side of the housing, and the input / output terminals are adjacent to the input / output terminals. A third harmonic wave suppressing element having a length passing by the side of the resonance rod is provided.
【００１０】[0010]
【作用】このように各入出力端子が設けられている筐体
の各板面側に、当該入出力端子に隣接する共振棒の脇を
通り過ぎる長さをもった３倍波抑制素子をそれぞれ設け
ると、該３倍波抑制素子が入出力端子に隣接する段の共
振器とその次の段の共振器との位相を変えることがで
き、３倍波の共振をずらせて通過させないようにするこ
とができる。従って、３倍波を広帯域にわたり減衰させ
ることができる。The third harmonic suppression element having a length passing by the side of the resonance rod adjacent to the input / output terminal is provided on each plate surface side of the housing in which the input / output terminals are provided. And the third harmonic suppression element can change the phase between the resonator of the stage adjacent to the input / output terminal and the resonator of the next stage, so that the resonance of the third harmonic is shifted and not passed. Can be. Therefore, the third harmonic can be attenuated over a wide band.
【００１１】特に本考案のように、３倍波抑制素子を、
入出力端子が設けられている筐体の板面側に設けている
ので、入出力端子が設けられている筐体の板面に対して
直交する板面に該３倍波抑制素子の一部が突出すること
がなく、このため入出力端子が設けられている筐体の板
面に対して直交する板面側の状態に制約されずに実施す
ることができ、また３倍波抑制素子の調整も支障なく行
うことができ、使い勝手がよい利点がある。 Particularly, as in the present invention, the third harmonic wave suppressing element is
Provided on the board side of the housing where the input / output terminals are provided
Therefore, with respect to the plate surface of the housing where the input / output terminals are provided
Part of the third harmonic suppression element protrudes from the orthogonal plate surface
Plate for the housing with input / output terminals
Perform without restriction on the state of the plate surface side orthogonal to the surface
Adjustment of the third harmonic wave suppression element can be performed without any trouble.
This has the advantage of being easy to use.
【００１２】[0012]
【実施例】図１〜図３は本考案に係る同軸形帯域通過ろ
波器の一実施例を示したものである。なお、前述した図
５と対応する部分には、同一符号を付けて示している。1 to 3 show an embodiment of a coaxial band-pass filter according to the present invention. Parts corresponding to those in FIG. 5 described above are denoted by the same reference numerals.
【００１３】図示のように本実施例の同軸形帯域通過ろ
波器は、各入出力端子３が設けられている筐体１の各板
面側には、当該入出力端子３に隣接する共振棒２の脇を
通り過ぎる長さをもった３倍波抑制素子６が当該共振棒
２に隣接する配置でそれぞれ設けられている。これら３
倍波抑制素子６は、３倍波に対する調整が容易なように
ビスによりそれぞれ形成されている。また、これら３倍
波抑制素子６は、図１の右側では同軸型の入出力端子３
の外部導体３ｂを筐体１に固定するビスよりなる固定子
の１本が兼用され、図１の左側では外部導体３ｂを筐体
１に固定するビスと兼用せずに設けられており、これら
はいずれでもよい。As shown in the drawing, the coaxial band-pass filter according to the present embodiment has a resonance side adjacent to the input / output terminal 3 on each plate surface side of the housing 1 provided with the input / output terminal 3. Third harmonic suppression elements 6 each having a length passing by the side of the rod 2 are provided in an arrangement adjacent to the resonance rod 2. These three
The harmonic suppression element 6 is formed of a screw so as to easily adjust the third harmonic. The third harmonic suppression element 6 has a coaxial input / output terminal 3 on the right side of FIG.
One of the stators made of screws for fixing the external conductor 3b to the housing 1 is also used, and provided on the left side of FIG. 1 without being used as the screw for fixing the external conductor 3b to the housing 1. May be any.
【００１４】このような同軸形帯域通過ろ波器では、３
倍波抑制素子６が入出力端子３に隣接する段の共振器と
その次の段の共振器との位相を変え、３倍波の共振をず
らせて通過させないように作用する。従って、３倍波を
広帯域にわたり減衰させることができる。In such a coaxial band-pass filter, 3
The harmonic suppression element 6 changes the phase between the resonator at the stage adjacent to the input / output terminal 3 and the resonator at the next stage, and acts so as to shift the resonance of the third harmonic so as not to pass. Therefore, the third harmonic can be attenuated over a wide band.
【００１５】特に本例のように、３倍波抑制素子６を、
入出力端子３が設けられている筐体１の板面側に設けて
いるので、入出力端子３が設けられている筐体１の板面
に対して直交する板面に該３倍波抑制素子６の一部が突
出することがなく、このため入出力端子３が設けられて
いる筐体１の板面に対して直交する板面側の状態に制約
されずに実施することができ、また３倍波抑制素子６の
調整も支障なく行うことができ、使い勝手がよい利点が
ある。即ち、入出力端子３が設けられている筐体１の板
面に対して直交する板面側に他の機器が密着して存在し
ていても、本例では入出力端子３の一部が突出している
筐体１の板面を利用してこの板面に３倍波抑制素子６を
設けているので、支障なく実施することができ、また３
倍波抑制素子６の調整も支障なく行うことができ、使い
勝手がよい。 Particularly, as in this embodiment, the third harmonic wave suppression element 6 is
It is provided on the plate surface side of the housing 1 in which the input / output terminals 3 are provided.
The surface of the housing 1 on which the input / output terminals 3 are provided.
A part of the third harmonic wave suppression element 6 projects on a plate surface orthogonal to
No input / output terminal 3 is provided.
To the state of the plate surface side orthogonal to the plate surface of the housing 1
The third harmonic suppression element 6
Adjustment can be performed without any trouble, and the advantage is that it is easy to use.
is there. That is, a plate of the housing 1 provided with the input / output terminals 3
Other devices are in close contact with the board surface orthogonal to the
However, in this example, a part of the input / output terminal 3 protrudes.
Using the plate surface of the housing 1, the third harmonic suppression element 6 is mounted on this plate surface.
And can be implemented without any problems.
The adjustment of the harmonic suppression element 6 can be performed without any trouble.
It is good.
【００１６】図４は図１〜図３に示す構造の同軸形帯域
通過ろ波器の減衰量特性の具体例を示したものである。
図において、実線は３倍波抑制素子をもつ本実施例の同
軸形帯域通過ろ波器の減衰量特性を示し、破線は３倍波
抑制素子をもたない従来の同軸形帯域通過ろ波器の減衰
量特性を示したものである。図において、マーカ３〜マ
ーカ４間が３倍波帯域である。図から明らかなように、
本実施例の同軸形帯域通過ろ波器によれば、従来の同軸
形帯域通過ろ波器に比べて３倍波帯域の減衰量を増加さ
せることができる。FIG. 4 shows a specific example of the attenuation characteristic of the coaxial band-pass filter having the structure shown in FIGS.
In the figure, the solid line shows the attenuation characteristic of the coaxial bandpass filter of the present embodiment having the third harmonic wave suppression element, and the broken line shows the conventional coaxial bandpass filter without the third harmonic wave suppression element. FIG. In the figure, the area between the markers 3 and 4 is the third harmonic band. As is clear from the figure,
According to the coaxial band-pass filter of the present embodiment, the attenuation in the third harmonic band can be increased as compared with the conventional coaxial band-pass filter.
【００１７】なお、上記実施例では、３倍波抑制素子６
を入出力端子３に隣接させて１つ設けたが、必要に応じ
て複数設けることもできる。In the above embodiment, the third harmonic wave suppressing element 6
Are provided adjacent to the input / output terminal 3, but a plurality may be provided as necessary.
【００１８】[0018]
【考案の効果】以上説明したように本考案に係る同軸形
帯域通過ろ波器においては、各入出力端子が設けられて
いる筐体の各板面側に、当該入出力端子に隣接する共振
棒の脇を通り過ぎる長さをもった３倍波抑制素子をそれ
ぞれ設けたので、該３倍波抑制素子が入出力端子に隣接
する段の共振器とその次の段の共振器との位相を変え、
３倍波の共振をずらせて通過させないようにすることが
でき、このため３倍波を広帯域にわたり減衰させること
ができる。また、このような３倍波抑制素子を用いた同
軸形帯域通過ろ波器によれば、所要の周波数帯域に影響
を与えず３倍波の減衰量を増加させることができる。As described above, in the coaxial band-pass filter according to the present invention, the resonance adjacent to the input / output terminal is provided on each plate surface side of the housing provided with the input / output terminal. Since the third harmonic wave suppression element having a length passing by the side of the rod is provided, the third harmonic wave suppression element shifts the phase of the resonator of the stage adjacent to the input / output terminal and the resonator of the next stage. Change
The resonance of the third harmonic can be shifted so as not to pass, so that the third harmonic can be attenuated over a wide band. Further, according to the coaxial band-pass filter using such a third harmonic suppressing element, the attenuation of the third harmonic can be increased without affecting the required frequency band.
【００１９】特に本考案のように、３倍波抑制素子を、
入出力端子が設けられている筐体の板面側に設けている
ので、入出力端子が設けられている筐体の板面に対して
直交する板面に該３倍波抑制素子の一部が突出すること
がなく、このため入出力端子が設けられている筐体の板
面に対して直交する板面側の状態に制約されずに実施す
ることができ、また３倍波抑制素子の調整も支障なく行
うことができ、使い勝手がよい利点がある。 Particularly, as in the present invention, the third harmonic wave suppressing element is
Provided on the board side of the housing where the input / output terminals are provided
Therefore, with respect to the plate surface of the housing where the input / output terminals are provided
Part of the third harmonic suppression element protrudes from the orthogonal plate surface
Plate for the housing with input / output terminals
Perform without restriction on the state of the plate surface side orthogonal to the surface
Adjustment of the third harmonic wave suppression element can be performed without any trouble.
This has the advantage of being easy to use.
【図１】本考案に係る同軸形帯域通過ろ波器の一実施例
の縦断面図である。FIG. 1 is a longitudinal sectional view of one embodiment of a coaxial bandpass filter according to the present invention.
【図２】図１のＸ−Ｘ線断面図である。FIG. 2 is a sectional view taken along line XX of FIG.
【図３】図１に示す同軸形帯域通過ろ波器の入出力端子
部分の側面図である。FIG. 3 is a side view of an input / output terminal portion of the coaxial band-pass filter shown in FIG.
【図４】図１に示す本実施例の同軸形帯域通過ろ波器と
従来の同軸形帯域通過ろ波器との減衰量特性の比較図で
ある。FIG. 4 is a comparison diagram of attenuation characteristics between the coaxial bandpass filter of the present embodiment shown in FIG. 1 and a conventional coaxial bandpass filter.
【図５】従来の同軸形帯域通過ろ波器の縦断面図であ
る。FIG. 5 is a longitudinal sectional view of a conventional coaxial band-pass filter.
１ 筐体 ２ 共振棒 ３ 入出力端子 ４ 共振周波数調整ビス ５ 段間結合補正ビス ６ ３倍波抑制素子 DESCRIPTION OF SYMBOLS 1 Housing 2 Resonant rod 3 I / O terminal 4 Resonance frequency adjustment screw 5 Interstage coupling correction screw 6 Third harmonic suppression element
Claims (1)
設され、前記各共振棒の並設方向の両端には入出力端子
が設けられている同軸形帯域通過ろ波器において、 前記各入出力端子が設けられている前記筐体の各板面側
には、当該入出力端子に隣接する前記共振棒の脇を通り
過ぎる長さをもった３倍波抑制素子がそれぞれ設けられ
ていることを特徴とする同軸形帯域通過ろ波器。1. A coaxial band-pass filter in which a plurality of resonance rods are juxtaposed in a housing at predetermined intervals, and input / output terminals are provided at both ends of the resonance rods in the juxtaposition direction. On each plate surface side of the housing provided with each of the input / output terminals, a third harmonic suppression element having a length passing by the side of the resonance rod adjacent to the input / output terminal is provided. A coaxial band-pass filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1993058013U JP2597116Y2 (en) | 1993-10-27 | 1993-10-27 | Coaxial bandpass filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1993058013U JP2597116Y2 (en) | 1993-10-27 | 1993-10-27 | Coaxial bandpass filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0729903U JPH0729903U (en) | 1995-06-02 |
| JP2597116Y2 true JP2597116Y2 (en) | 1999-06-28 |
Family
ID=13072092
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1993058013U Expired - Fee Related JP2597116Y2 (en) | 1993-10-27 | 1993-10-27 | Coaxial bandpass filter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2597116Y2 (en) |
-
1993
- 1993-10-27 JP JP1993058013U patent/JP2597116Y2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0729903U (en) | 1995-06-02 |
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| LAPS | Cancellation because of no payment of annual fees |