JPH06204705A - Band stop filter - Google Patents
Band stop filterInfo
- Publication number
- JPH06204705A JPH06204705A JP718292A JP718292A JPH06204705A JP H06204705 A JPH06204705 A JP H06204705A JP 718292 A JP718292 A JP 718292A JP 718292 A JP718292 A JP 718292A JP H06204705 A JPH06204705 A JP H06204705A
- Authority
- JP
- Japan
- Prior art keywords
- cover
- electric field
- coupling
- stop filter
- wall
- 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.)
- Granted
Links
- 239000004020 conductor Substances 0.000 claims abstract description 16
- 230000008878 coupling Effects 0.000 claims abstract description 16
- 238000010168 coupling process Methods 0.000 claims abstract description 16
- 238000005859 coupling reaction Methods 0.000 claims abstract description 16
- 230000005684 electric field Effects 0.000 claims abstract description 10
- 230000005540 biological transmission Effects 0.000 claims abstract description 3
- 239000002184 metal Substances 0.000 claims description 11
- 238000013016 damping Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
Landscapes
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は帯域阻止ろ波器に関し、
特に金属きょう体内に同軸共振棒を複数個配列して帯域
阻止特性を生成する帯域阻止ろ波器に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a band stop filter,
In particular, the present invention relates to a band stop filter that produces a band stop characteristic by arranging a plurality of coaxial resonance rods in a metal housing.
【０００２】[0002]
【従来の技術】従来、この種の帯域阻止ろ波器は、図２
（ａ）のカバー２を外した内部を示す平面図および図２
（ａ）のＡ−Ａ断面図である図２（ｂ）に示すように、
λ／４（λは波長）又は３／４λの間隔で配列された複
数個の共振棒１と、共振棒１の先端と電界結合して隣接
の共振棒１に電界を誘起する結合線路４と、共振棒１を
支持し外壁となる金属きょう体３と、隣接の共振棒１同
士の電界結合を防止する導体壁５と、金属きょう体３の
カバー３とから構成されている。ここで互いに隣接する
共振棒間の不要結合をしゃ断するために共振棒間に設け
られた導体壁５は、外壁特にカバー２と接触部６におい
て同一平面にて接触する構造になっていた。2. Description of the Related Art Conventionally, a band stop filter of this type is shown in FIG.
FIG. 2A is a plan view showing the inside of FIG.
As shown in FIG. 2B, which is a sectional view taken along line AA of FIG.
a plurality of resonance rods 1 arranged at intervals of λ / 4 (λ is a wavelength) or 3 / 4λ, and a coupling line 4 for inducing an electric field in an adjacent resonance rod 1 by electric field coupling with the tip of the resonance rod 1. A metal casing 3 that supports the resonance rod 1 and serves as an outer wall, a conductor wall 5 that prevents electric field coupling between adjacent resonance rods 1, and a cover 3 of the metal casing 3. Here, the conductor walls 5 provided between the resonance rods in order to block unnecessary coupling between the resonance rods adjacent to each other have a structure in which the outer wall, particularly the cover 2 and the contact portion 6 are in contact with each other on the same plane.
【０００３】[0003]
【発明が解決しようとする課題】この従来の帯域阻止ろ
波器では、共振棒からの漏洩電界が導体壁方向とカバー
方向の両方に存在している場合に、衝撃を与えるとカバ
ーと導体壁との接触不良が生じ、阻止特性の減衰量が図
３の特性Ｂに示すように４．６５ＧＨｚ±２ＭＨｚ近辺
において約３ｄＢ位変動する欠点がある。また、導体壁
の端部とカバーとの接触をよくするために導体壁を厚く
してねじ止めする方法は、共振棒間の距離がλ／４〜３
／４・λで制約され厚くすることができなかった。In this conventional band-stop filter, when a leak electric field from the resonance rod exists in both the conductor wall direction and the cover direction, when a shock is applied, the cover and the conductor wall are affected. There is a drawback that a contact failure occurs and the attenuation of the blocking characteristic fluctuates by about 3 dB in the vicinity of 4.65 GHz ± 2 MHz as shown in the characteristic B of FIG. Further, in the method of thickening the conductor wall and screwing it in order to improve the contact between the end portion of the conductor wall and the cover, the distance between the resonance rods is λ / 4 to 3
It could not be thickened because it was restricted by / 4 · λ.
【０００４】[0004]
【課題を解決するための手段】本発明の帯域阻止ろ波器
は金属きょう体内の一面の一方に近接し平行に配置され
た伝送線路を形成する結合線路と、この結合線路に電界
結合する前記金属きょう体内の前記一面と対向する他面
に一端を取り付けねじでスクリュー状に突出し長さを可
変とする複数個の共振棒とを有する帯域阻止ろ波器にお
いて、λ／４（λは１波長）又は３／４・λの間隔で配
列された前記共振棒同士の間に電界結合防止のために設
けられた導体壁と、前記金属きょう体の一面の内壁を形
成するカバーとを有し、前記導体壁の端部と前記カバー
の内面との間に間隙がある。SUMMARY OF THE INVENTION A band-stop filter according to the present invention comprises a coupling line that forms a transmission line arranged in parallel with and close to one surface of a metal housing, and is electrically coupled to the coupling line. A band-stop filter having a plurality of resonance rods, one end of which is attached to the other surface opposite to the one surface in the metal housing and which is protruded in a screw shape with screws and whose length is variable, in which λ / 4 (λ is one wavelength ) Or a conductor wall provided for preventing electric field coupling between the resonance rods arranged at a distance of 3/4 · λ, and a cover forming an inner wall of one surface of the metal casing, There is a gap between the end of the conductor wall and the inner surface of the cover.
【０００５】[0005]
【実施例】次に本発明について図面を参照して説明す
る。図１（ａ），（ｂ）は本発明の一実施例の構成図で
あり、カバー２をはずした平面図（ａ）、および図１
（ａ）のＡ−Ａ断面図である。図１において図２と同一
の符号は同一の構成と機能を有する。すなわち、本実施
例では金属きょう体３内にλ／４又は３／４・λの間隔
をおいて並設されている共振棒１の間に設けられた導体
壁５Ａの端部のカバー２側の面を削り、間隙６を形成す
る構造になっている。このような間隙６を設けることに
より、共振棒１の漏洩電界が導体壁５Ａとカバー２間の
接触がなくなるので変動しなくなり、図３の特性Ａに示
す２０ｄＢ以上の安定した減衰特性を得ることができ
る。The present invention will be described below with reference to the drawings. 1A and 1B are configuration diagrams of an embodiment of the present invention, in which a plan view with the cover 2 removed and FIG.
It is an AA sectional view of (a). 1, the same reference numerals as those in FIG. 2 have the same configurations and functions. That is, in the present embodiment, the end of the conductor wall 5A provided between the resonance rods 1 arranged side by side in the metal housing 3 with a spacing of λ / 4 or 3/4 · λ on the cover 2 side. The surface is shaved to form the gap 6. By providing such a gap 6, the leakage electric field of the resonance rod 1 does not fluctuate because the contact between the conductor wall 5A and the cover 2 disappears, and a stable attenuation characteristic of 20 dB or more shown in the characteristic A of FIG. 3 is obtained. You can
【０００６】[0006]
【発明の効果】以上説明したように本発明は、導体壁と
カバーとの間に間隙を設けることにより、不安定な接触
部がなくなり、減衰特性が安定するという効果を有す
る。As described above, the present invention has an effect that an unstable contact portion is eliminated by providing a gap between the conductor wall and the cover, and the damping characteristic is stabilized.
【図１】本発明の一実施例のカバー２をはずした平面図
（ａ）および図１（ａ）のＡ−Ａ断面図（ｂ）である。FIG. 1 is a plan view (a) with a cover 2 removed and an AA cross-sectional view (b) of FIG. 1 (a) according to an embodiment of the present invention.
【図２】従来の帯域阻止ろ波器のカバー２をはずした平
面図（ａ）および図２（ａ）のＡ−Ａ断面図（ｂ）であ
る。FIG. 2 is a plan view (a) in which a cover 2 of a conventional band elimination filter is removed and a sectional view (b) taken along the line AA of FIG. 2 (a).
【図３】本実施例と従来例の減衰特性を比較する特性図
である。FIG. 3 is a characteristic diagram comparing the damping characteristics of the present embodiment and the conventional example.
１ 共振棒 ２ カバー ３ 金属きょう体 ４ 結合線路 ５，５Ａ 導体壁 ６ 間隙 ７ 接触部 1 Resonance Rod 2 Cover 3 Metal Case 4 Coupling Line 5, 5A Conductor Wall 6 Gap 7 Contact Part
Claims (1)
行に配置された伝送線路を形成する結合線路と、この結
合線路に電界結合する前記金属きょう体内の前記一面と
対向する他面に一端を取り付けねじでスクリュー状に突
出し長さを可変とする複数個の共振棒とを有する帯域阻
止ろ波器において、λ／４（λは１波長）又は３／４・
λの間隔で配列された前記共振棒同士の間に電界結合防
止のために設けられた導体壁と、前記金属きょう体の一
面の内壁を形成するカバーとを有し、前記導体壁の端部
と前記カバーの内面との間に間隙があることを特徴とす
る帯域阻止ろ波器。1. A coupling line forming a transmission line arranged in parallel with and close to one surface of a metal housing, and one end on the other surface of the metal housing facing the one surface by electric field coupling to the coupling line. A band-stop filter having a plurality of resonance rods of which the length is variable by projecting in a screw shape with a mounting screw, λ / 4 (λ is one wavelength) or 3/4 ·
an end portion of the conductor wall having a conductor wall provided between the resonance rods arranged at intervals of λ for preventing electric field coupling, and a cover forming an inner wall of one surface of the metal casing. A band-stop filter, characterized in that there is a gap between the cover and the inner surface of the cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4007182A JP2798539B2 (en) | 1992-01-20 | 1992-01-20 | Band stop filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4007182A JP2798539B2 (en) | 1992-01-20 | 1992-01-20 | Band stop filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06204705A true JPH06204705A (en) | 1994-07-22 |
| JP2798539B2 JP2798539B2 (en) | 1998-09-17 |
Family
ID=11658926
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4007182A Expired - Lifetime JP2798539B2 (en) | 1992-01-20 | 1992-01-20 | Band stop filter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2798539B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5748058A (en) * | 1995-02-03 | 1998-05-05 | Teledyne Industries, Inc. | Cross coupled bandpass filter |
| US9202660B2 (en) | 2013-03-13 | 2015-12-01 | Teledyne Wireless, Llc | Asymmetrical slow wave structures to eliminate backward wave oscillations in wideband traveling wave tubes |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61105901A (en) * | 1984-10-30 | 1986-05-24 | Sumitomo Electric Ind Ltd | notsuchi filter |
| JPH0358501A (en) * | 1989-07-26 | 1991-03-13 | Nippon Dengiyou Kosaku Kk | Resonator |
-
1992
- 1992-01-20 JP JP4007182A patent/JP2798539B2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61105901A (en) * | 1984-10-30 | 1986-05-24 | Sumitomo Electric Ind Ltd | notsuchi filter |
| JPH0358501A (en) * | 1989-07-26 | 1991-03-13 | Nippon Dengiyou Kosaku Kk | Resonator |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5748058A (en) * | 1995-02-03 | 1998-05-05 | Teledyne Industries, Inc. | Cross coupled bandpass filter |
| US9202660B2 (en) | 2013-03-13 | 2015-12-01 | Teledyne Wireless, Llc | Asymmetrical slow wave structures to eliminate backward wave oscillations in wideband traveling wave tubes |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2798539B2 (en) | 1998-09-17 |
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