JPS61136301A - Band-pass filter of dielectric resonator - Google Patents
Band-pass filter of dielectric resonatorInfo
- Publication number
- JPS61136301A JPS61136301A JP25885684A JP25885684A JPS61136301A JP S61136301 A JPS61136301 A JP S61136301A JP 25885684 A JP25885684 A JP 25885684A JP 25885684 A JP25885684 A JP 25885684A JP S61136301 A JPS61136301 A JP S61136301A
- Authority
- JP
- Japan
- Prior art keywords
- dielectric resonator
- input
- filter
- coupling
- 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.)
- Pending
Links
- 230000008878 coupling Effects 0.000 claims abstract description 27
- 238000010168 coupling process Methods 0.000 claims abstract description 27
- 238000005859 coupling reaction Methods 0.000 claims abstract description 27
- 239000002184 metal Substances 0.000 claims description 29
- 239000004020 conductor Substances 0.000 claims description 7
- 239000003989 dielectric material Substances 0.000 claims 1
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 9
- 230000037431 insertion Effects 0.000 description 7
- 238000003780 insertion Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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
- H01P1/207—Hollow waveguide filters
- H01P1/208—Cascaded cavities; Cascaded resonators inside a hollow waveguide structure
- H01P1/2084—Cascaded cavities; Cascaded resonators inside a hollow waveguide structure with dielectric resonators
Landscapes
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、マイクロ波帯あるいはミリ波帯における受動
回路素子の帯域通過フィルタに関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a bandpass filter for passive circuit elements in the microwave band or millimeter wave band.
特に、誘電体共振器をいくつか並べてそれらを適当に結
合させて得られる誘電体共振器帯域通過フィルタに関す
る。In particular, the present invention relates to a dielectric resonator bandpass filter obtained by arranging several dielectric resonators and appropriately coupling them.
従来の誘電体共振器帯域通過フィルタ（以下、ｒＤＲフ
ィルタ」という、）の構成例を第５図に示す、第５図（
ａ）は２段ＤＲフィルタの平面断面図であり、第５図中
）は正面断面図である。An example of the configuration of a conventional dielectric resonator band-pass filter (hereinafter referred to as "rDR filter") is shown in FIG.
a) is a plan sectional view of the two-stage DR filter, and FIG. 5) is a front sectional view.
第５図において、誘電体共振器１が金属シャーシ２の中
に配置されている。金属ンヤーシ２にはカバー３が被せ
られる。このカバー３には、誘電体共振器１の共振周波
数を調整するスクリュー４が取りつけられている。金属
シャーシ２の両端外側には入出力コネクタ５が取りつけ
られ、その内側にはこの入出力コネクタ５と誘電体共振
器１とを電磁界的に結合するための金属プレート６が備
えられている。In FIG. 5, a dielectric resonator 1 is arranged in a metal chassis 2. In FIG. A cover 3 is placed over the metal palm 2. A screw 4 for adjusting the resonant frequency of the dielectric resonator 1 is attached to the cover 3. Input/output connectors 5 are attached to the outer sides of both ends of the metal chassis 2, and a metal plate 6 for electromagnetically coupling the input/output connectors 5 and the dielectric resonator 1 is provided inside.
このような、従来のＤＲフィルタでは、入出力のカップ
リング部の金属プレート６は誘電体共振器１の側面に垂
直に位置している。このような配置での入出力の結合状
態を第６図に示す。破線は磁力線を表す。In such a conventional DR filter, the metal plate 6 of the input/output coupling portion is located perpendicularly to the side surface of the dielectric resonator 1. FIG. 6 shows the input/output connection state in such an arrangement. Dashed lines represent lines of magnetic force.
このような従来のＤＲフィルタでは、金属プレート６と
錯交する磁束が少なく、誘電体共振器１との結合が弱く
なる。したがって、広帯域の帯域通過フィルタの実現が
困難になる欠点がある。また、結合を強くするために誘
電体共振器１と金属プレート６との距離ｌを短くすると
、金属プレート６の導体損失によりＤＲフィルタの挿入
損失が増加する欠点があった。In such a conventional DR filter, there is little magnetic flux that intersects with the metal plate 6, and the coupling with the dielectric resonator 1 becomes weak. Therefore, there is a drawback that it is difficult to realize a wideband bandpass filter. Further, when the distance l between the dielectric resonator 1 and the metal plate 6 is shortened in order to strengthen the coupling, there is a drawback that the insertion loss of the DR filter increases due to the conductor loss of the metal plate 6.
本発明は、このような従来の問題点を改善するもので、
ＤＲフィルタの挿入損失の増加を最小限にとどめるとと
もに、入出力の結合を強くすることができるＤＲフィル
タを提供することを目的とする。The present invention improves these conventional problems, and
It is an object of the present invention to provide a DR filter that can minimize the increase in insertion loss of the DR filter and strengthen input/output coupling.
〔問題点を解決するための手段〕
本発明は、ｎ個（ｎは２以上の整数）の誘電体共振器と
、この誘電体共振器に入出力信号を結合するために設け
られた二つの入出力結合用平板導体とを備えた誘電体共
振器帯域通過フィルタにおいて、上記二つの入出力結合
用平板導体が上記誘電体共振器の側面に平行に配置され
たことを特徴とする。[Means for solving the problem] The present invention comprises n dielectric resonators (n is an integer of 2 or more) and two resonators provided for coupling input and output signals to the dielectric resonators. A dielectric resonator band-pass filter including a flat plate conductor for input/output coupling, characterized in that the two flat plate conductors for input/output coupling are arranged in parallel to a side surface of the dielectric resonator.
平板導体は、断面がＬ字形の金属片の一面であり、この
金属片の他端が入出力端子に接続された構造であること
が好ましい。Preferably, the flat conductor is one side of a metal piece having an L-shaped cross section, and the other end of the metal piece is connected to an input/output terminal.
本発明のＤＲフィルタは、入出力結合用金属プレートを
誘電体共振器の側面に平行に配置することにより、金属
プレートと誘電体共振器との結合量が増え、したがって
挿入損失の増加を最小限にとどめることができる。The DR filter of the present invention increases the amount of coupling between the metal plate and the dielectric resonator by arranging the input/output coupling metal plate parallel to the side surface of the dielectric resonator, thereby minimizing the increase in insertion loss. can be kept at
以下、本発明の実施例方式を図面に基づいて説明する。 DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.
第１図は、本発明の誘電体共振器帯域通過フィルタの一
実施例を示す構成図である。第１図（ａ）は２段ＤＲフ
ィルタの平面断面図であり、愼１図山）は正面断面図で
ある。FIG. 1 is a configuration diagram showing an embodiment of a dielectric resonator band-pass filter of the present invention. FIG. 1(a) is a plan sectional view of a two-stage DR filter, and FIG. 1(a) is a front sectional view.
第１図において、誘電体共振器ｌが金属シャーシ２の中
に配置されている。金属シャーシ２にはカバー３が被せ
られる。このカバー３には、誘電体共振器１の共振周波
数を調整するスクリュー４が取りつけられている。金属
シャーシ２の両端外側には入出力コネクタ５が取りつけ
られ、その内側にはこの入出力コネクタ５と誘電体共振
器１とを電磁界的に結合するための金属プレート７が備
えられている。In FIG. 1, a dielectric resonator l is arranged in a metal chassis 2. In FIG. The metal chassis 2 is covered with a cover 3. A screw 4 for adjusting the resonant frequency of the dielectric resonator 1 is attached to the cover 3. Input/output connectors 5 are attached to the outer sides of both ends of the metal chassis 2, and a metal plate 7 for electromagnetically coupling the input/output connectors 5 and the dielectric resonator 1 is provided inside.
本発明のＤＲフィルタの特徴は、入出力のカップリング
部の金属プレート７が、誘電体共振器１の側面に対して
平行になるように配置されているところにある。このよ
うな配置での入出力の結合状態を第２図に示す、破線は
磁力線を表す。A feature of the DR filter of the present invention is that the metal plate 7 of the input/output coupling section is arranged parallel to the side surface of the dielectric resonator 1. The input/output coupling state in such an arrangement is shown in FIG. 2, where the broken lines represent lines of magnetic force.
したがって、第２図に示すように金属プレート７と錯交
する磁束の減少が少なく、従来例ＤＲフィルタの金属プ
レート６の配置に比べて誘電体共振器１との結合を強く
することができる。すなわち、誘電体共振器１と金属プ
レート６．７との距離βが等しければ、従来のＤＲフィ
ルタに比較して本発明のＤＲフィルタは結合量も多く、
従って挿入損失も少なくすることができる。Therefore, as shown in FIG. 2, the decrease in the magnetic flux intersecting with the metal plate 7 is small, and the coupling with the dielectric resonator 1 can be strengthened compared to the arrangement of the metal plate 6 of the conventional DR filter. That is, if the distance β between the dielectric resonator 1 and the metal plate 6.7 is equal, the DR filter of the present invention has a larger coupling amount than the conventional DR filter.
Therefore, insertion loss can also be reduced.
第３図は、誘電体共振器１と金属プレート６．７との距
離ｌに対する結合量の関係を示す図である。FIG. 3 is a diagram showing the relationship between the amount of coupling and the distance l between the dielectric resonator 1 and the metal plate 6.7.
第４図は、誘電体共振器１と金属プレート６．７との結
合量に対するＤＲフィルタの挿入損失の関係を示す図で
ある。FIG. 4 is a diagram showing the relationship between the insertion loss of the DR filter and the amount of coupling between the dielectric resonator 1 and the metal plate 6.7.
第３図および第４図ともに実線は本発明のＤＲフィルタ
を表し、破線は従来例のＤＲフィルタを表す。In both FIGS. 3 and 4, the solid line represents the DR filter of the present invention, and the broken line represents the conventional DR filter.
本発明のＤＲフィルタは、以上説明したように、金属プ
レートと誘電体共振器との結合量が増え、したがって挿
入損失の劣化を最小限にとどめることができるので、広
帯域の帯域通過フィルタを実現することができる効果が
ある。As explained above, the DR filter of the present invention increases the amount of coupling between the metal plate and the dielectric resonator, and therefore can minimize the deterioration of insertion loss, thereby realizing a broadband bandpass filter. There is an effect that can be done.
第１図は本発明の誘電体共振器帯域通過フィルタの一実
施例を示す構成図。
第２図は入出力の結合状態を説明する図。
第３図は誘電体共振器と金属プレートとの距離Ｅに対す
る結合量の関係を示す図。
第４図は誘電体共振器と金属プレートとの結合量に対す
るＤＲフィルタの挿入損失の関係を示す図。
第５図は従来の誘電体共振器帯域通過フィルタの一例を
示す構成図。
第６図は従来例フィルタの入出力の結合状態を説明する
図。
１・・・誘電体共振器、２・・・金属シャーシ、３・・
・カバー、４・・・スクリュー、５・・・入出力コネク
タ、６．７・・・金属プレート。
特許出願人 日本電気株式会社−
代理人 弁理士 井 出 直 孝
Ｍ３ 図
万 ４ 口
Ｍ５ 図
′Ｍ ６ 図FIG. 1 is a configuration diagram showing an embodiment of a dielectric resonator band-pass filter of the present invention. FIG. 2 is a diagram explaining the input/output connection state. FIG. 3 is a diagram showing the relationship between the amount of coupling and the distance E between the dielectric resonator and the metal plate. FIG. 4 is a diagram showing the relationship between the insertion loss of the DR filter and the amount of coupling between the dielectric resonator and the metal plate. FIG. 5 is a configuration diagram showing an example of a conventional dielectric resonator band-pass filter. FIG. 6 is a diagram illustrating the input/output coupling state of a conventional filter. 1... Dielectric resonator, 2... Metal chassis, 3...
・Cover, 4...Screw, 5...I/O connector, 6.7...Metal plate. Patent Applicant NEC Corporation - Agent Patent Attorney Naotaka IdeM3 Figure 4M5 Figure'M6 Figure
Claims (2)
の誘電体共振器に入出力信号を結合するために設けられ
た二つの入出力結合用平板導体とを備えた誘電体共振器
帯域通過フィルタにおいて、 上記二つの入出力結合用平板導体が上記誘電体共振器の
側面に平行に配置された ことを特徴とする誘電体共振器帯域通過フィルタ。(1) A dielectric comprising n dielectric resonators (n is an integer of 2 or more) and two input/output coupling flat conductors provided to couple input/output signals to the dielectric resonators. A dielectric resonator band-pass filter, characterized in that the two flat plate conductors for input/output coupling are arranged parallel to the side surfaces of the dielectric resonator.
、この金属片の他端が入出力端子に接続された構造であ
る 特許請求の範囲第（１）項に記載の誘電体共振器帯域通
過フィルタ。(2) The dielectric material according to claim (1), wherein the flat conductor is one side of a metal piece having an L-shaped cross section, and the other end of the metal piece is connected to an input/output terminal. Resonator bandpass filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25885684A JPS61136301A (en) | 1984-12-06 | 1984-12-06 | Band-pass filter of dielectric resonator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25885684A JPS61136301A (en) | 1984-12-06 | 1984-12-06 | Band-pass filter of dielectric resonator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61136301A true JPS61136301A (en) | 1986-06-24 |
Family
ID=17325982
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25885684A Pending JPS61136301A (en) | 1984-12-06 | 1984-12-06 | Band-pass filter of dielectric resonator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61136301A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5684438A (en) * | 1995-06-21 | 1997-11-04 | Forem, S.P.A. | Microwave filter including a plurality of cross-coupled dielectric resonators |
| US5942959A (en) * | 1996-10-30 | 1999-08-24 | Murata Manufacturing Co., Ltd. | Filter device having a dielectric resonator and a coupling loop with adjustable coupling between the dielectric resonator and the coupling loop |
| WO2000077879A3 (en) * | 1999-06-11 | 2001-04-26 | Bosch Gmbh Robert | Microwave filter |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58162103A (en) * | 1982-03-23 | 1983-09-26 | Murata Mfg Co Ltd | Energizing structure of dielectric resonator |
-
1984
- 1984-12-06 JP JP25885684A patent/JPS61136301A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58162103A (en) * | 1982-03-23 | 1983-09-26 | Murata Mfg Co Ltd | Energizing structure of dielectric resonator |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5684438A (en) * | 1995-06-21 | 1997-11-04 | Forem, S.P.A. | Microwave filter including a plurality of cross-coupled dielectric resonators |
| US5942959A (en) * | 1996-10-30 | 1999-08-24 | Murata Manufacturing Co., Ltd. | Filter device having a dielectric resonator and a coupling loop with adjustable coupling between the dielectric resonator and the coupling loop |
| WO2000077879A3 (en) * | 1999-06-11 | 2001-04-26 | Bosch Gmbh Robert | Microwave filter |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5365209A (en) | Dielectric filters and duplexers incorporating same | |
| JPS638641B2 (en) | ||
| EP0949707A2 (en) | Dielectric filter, duplexer, and communication device | |
| US6201456B1 (en) | Dielectric filter, dielectric duplexer, and communication device, with non-electrode coupling parts | |
| US6191668B1 (en) | Coaxial resonator and dielectric filter using the same | |
| JPH0234001A (en) | Band stop filter | |
| JPS61136301A (en) | Band-pass filter of dielectric resonator | |
| EP0682380B1 (en) | Nonreciprocal circuit element | |
| US6249195B1 (en) | Dielectric filter, dielectric duplexer, and transceiver having circular and polygonal electrode openings | |
| JPH114108A (en) | Dielectric resonator, filter using the same, shared equipment and communication equipment device | |
| JP2004312217A (en) | Waveguide type dielectric filter | |
| JPH03124102A (en) | Dielectric filter | |
| JP2884838B2 (en) | Non-reciprocal circuit device | |
| JP3121796B2 (en) | Circulator | |
| JP3750420B2 (en) | Planar filter, duplexer using the same, high frequency module using them, and communication device using the same | |
| US5781079A (en) | Magnetostatic wave device | |
| JPH0546322Y2 (en) | ||
| US5859575A (en) | Dielectric filter | |
| JP2004289352A (en) | Waveguide type dielectric filter | |
| JPH03187502A (en) | Interdigital filter | |
| JP2607675Y2 (en) | Non-reciprocal circuit device | |
| JPS63131601A (en) | Strip line filter | |
| JPH03216001A (en) | dielectric filter | |
| JP2002237701A (en) | Waveguide type dielectric filter | |
| JP2002111329A (en) | Dielectric resonator and filter |