JPS63127607A - Resonance frequency adjusting method for dielectric resonator - Google Patents
Resonance frequency adjusting method for dielectric resonatorInfo
- Publication number
- JPS63127607A JPS63127607A JP27495286A JP27495286A JPS63127607A JP S63127607 A JPS63127607 A JP S63127607A JP 27495286 A JP27495286 A JP 27495286A JP 27495286 A JP27495286 A JP 27495286A JP S63127607 A JPS63127607 A JP S63127607A
- Authority
- JP
- Japan
- Prior art keywords
- open end
- dielectric resonator
- electrode
- ceramic
- resonator
- 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
- 238000000034 method Methods 0.000 title claims description 16
- 239000000919 ceramic Substances 0.000 claims abstract description 13
- 230000002093 peripheral effect Effects 0.000 description 5
- 230000007423 decrease Effects 0.000 description 2
- 239000003989 dielectric material Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000012217 deletion Methods 0.000 description 1
- 230000037430 deletion Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005488 sandblasting Methods 0.000 description 1
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〕
本発明は共振器あるいはフィルタとして利用される誘電
体共振器の共振周波数調整方法に係るもので、特に４分
の１波長の同軸共振器の周波数の調整方法に関するもの
である。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a method for adjusting the resonant frequency of a dielectric resonator used as a resonator or a filter, and particularly relates to a method for adjusting the resonant frequency of a dielectric resonator used as a resonator or a filter. This invention relates to a frequency adjustment method.
セラミック誘電体を用いた誘電体同軸共振器は高周波帯
における共振器あるいはフィルタとじて多方面で利用さ
れている。これは筒状のセラミック誘電体で構成され、
その内周面と外周面にそれぞれ電極が形成されている。Dielectric coaxial resonators using ceramic dielectrics are used in many fields as resonators or filters in high frequency bands. It consists of a cylindrical ceramic dielectric,
Electrodes are formed on the inner circumferential surface and the outer circumferential surface, respectively.
使用される周波数に応じて寸法が決められるが、実際に
は共振周波数の調整が必要となる。The dimensions are determined depending on the frequency used, but in practice the resonant frequency needs to be adjusted.
共振周波数の調整方法としては幾つか提案されており、
例えば特開昭５８−２０４６０２号公報や特開昭６０−
５２１０２号公報などに示されている。これらにおいて
はいずれも筒状の共振器の開放端あるいは短絡電極の電
極またはセラミック誘電体を削除している。Several methods have been proposed for adjusting the resonance frequency.
For example, JP-A-58-204602 and JP-A-60-
This is shown in, for example, Japanese Patent No. 52102. In all of these, the open end of the cylindrical resonator or the electrode or ceramic dielectric of the short-circuit electrode is omitted.
上記のような調整方法においては削除する面積等を厳密
に制御する必要があり、加工には十分な精度が要求され
る。また、フィルタなどとして組み立てられてから調整
が必要になった場合にも加工が難しくなる。In the above adjustment method, it is necessary to strictly control the area to be removed, etc., and sufficient precision is required for processing. Furthermore, processing becomes difficult when adjustments are required after being assembled into a filter or the like.
本発明は上記のような問題点を解決して、加工が容易で
かつ制御の簡単な誘電体共振器の共振周波数調整方法を
提供することを目的とする。It is an object of the present invention to solve the above-mentioned problems and provide a method for adjusting the resonance frequency of a dielectric resonator that is easy to process and easy to control.
また、フィルタなどとして組み込まれてからも調整が可
能な方法を提供することを目的とする。Another object of the present invention is to provide a method that allows adjustment even after being incorporated as a filter or the like.
本発明は外周面の電極を開放端から一定の幅で円周方向
の長さを変えながら削除することによって上記の目的を
達成するものである。The present invention achieves the above object by removing the electrodes on the outer peripheral surface from the open end by changing the length in the circumferential direction by a constant width.
すなわち、筒状のセラミック誘電体の内周面と外周面に
それぞれ電極を形成した誘電体共振器の共振周波数調整
方法において、該外周面の電極を開放端から一定の幅で
円周方向に所定の長さで削除することによって該誘電体
共振器の共振周波数を調整することに特徴を有するもの
である。That is, in a method for adjusting the resonant frequency of a dielectric resonator in which electrodes are formed on the inner and outer circumferential surfaces of a cylindrical ceramic dielectric, the electrodes on the outer circumferential surface are set at a predetermined width in the circumferential direction from the open end. The feature is that the resonant frequency of the dielectric resonator is adjusted by removing the length of the dielectric resonator.
以下、図面を参照して本発明の実施例について説明する
。Embodiments of the present invention will be described below with reference to the drawings.
第１図は本発明の実施例を示す斜視図である。FIG. 1 is a perspective view showing an embodiment of the present invention.
誘電体共振器１０は円筒状の誘電体セラミック１１の内
周面と外周面にそれぞれ電極１２、工３が形成されてい
る。上側の平坦面はセラミックが露出した開放端となっ
ている。外周面電極１３を開放端側から一定の幅で削り
セラミックを露出させている。この場合削る幅をｌｎｕ
ｗとしており、開放端に沿った円周方向の長さを所望の
周波数が得られる寸法とする。すなわち長さの寸法Δｌ
によって周波数が徐々に変化することを利用し、周波数
の変化量に応じた寸法まで削るようにしたものである。The dielectric resonator 10 includes an electrode 12 and a groove 3 formed on the inner and outer peripheral surfaces of a cylindrical dielectric ceramic 11, respectively. The upper flat surface is an open end with exposed ceramic. The outer peripheral surface electrode 13 is shaved to a certain width from the open end side to expose the ceramic. In this case, the width to be cut is lnu
w, and the length in the circumferential direction along the open end is a dimension that allows a desired frequency to be obtained. That is, the length dimension Δl
This method takes advantage of the fact that the frequency gradually changes due to the change in frequency, and cuts the size to a size that corresponds to the amount of change in frequency.
このようにして削る長さを変えた場合に共振周波数がど
のように変化するかを示したのが第３図である。横軸に
長さすなわちΔｌをとり、縦軸には周波数変化量とＱ変
化量がとっである。Δノは全周に対する比率（割合）で
示しである。１ｍｌ１１の幅で長さを大きくして行くと
共振周波数が高（なり、４分の１で約６ ＭＨｚ、２分
の１で約１３ＭＨｚ共振周波数が上昇していた。長さを
全周の２分の１より大きくすると逆に共振周波数が下が
ることがｌ＋１！認された。FIG. 3 shows how the resonance frequency changes when the length to be cut is changed in this way. The horizontal axis shows the length, ie, Δl, and the vertical axis shows the amount of frequency change and the amount of Q change. Δ is expressed as a ratio (ratio) to the entire circumference. As the length increases with a width of 1ml11, the resonant frequency increases (approximately 6 MHz at a quarter, and approximately 13 MHz at a half). It was found that when the value is increased by more than 1/1, the resonant frequency decreases by l+1!.
このようにして外周面の電極を削除するとＱは下がるこ
とも確認された。Ｑの低下が余り大きくなると共振器と
しての特性に大きく影響するので低下量が余り大きく内
範囲に留めておく必要がある。図にも示されているよう
に長さが２分の１以上となると、Ｑが大幅に低下するよ
うになり、実用に適さなくなった。It was also confirmed that when the electrodes on the outer peripheral surface were removed in this way, the Q value decreased. If the reduction in Q becomes too large, it will greatly affect the characteristics of the resonator, so if the amount of reduction is too large, it is necessary to keep it within the range. As shown in the figure, when the length becomes 1/2 or more, the Q value decreases significantly, making it unsuitable for practical use.
上記のような測定結果から考えて長さは２分の１以内に
留めておくことが好ましい。Considering the above measurement results, it is preferable to keep the length within 1/2.
第２図は本発明の他の実施例を示す斜視図である。外周
面の電極２３を前記と同様に削るものであるが、電極の
一部を削除せずに残して浮かせたものである。この場合
には一定の幅の線で電極を削るだけで良いので加工はよ
り簡単となる。測定の結果も前記の場合とほとんど同じ
であった。また段階的に変化させたい周波数単位であら
かじめ一定間隔で開放端から細い線状に誘電体を露出さ
せておくと、削除箇所数によって定量的に調整が可能で
あり、一方向のみの削除のために加工も容易である。FIG. 2 is a perspective view showing another embodiment of the invention. The electrode 23 on the outer circumferential surface is shaved off in the same manner as described above, but a part of the electrode is left and floated without being removed. In this case, processing is simpler because it is only necessary to cut the electrode along a line of a certain width. The measurement results were also almost the same as in the previous case. In addition, if you expose the dielectric material in thin lines from the open end at regular intervals in advance in frequency units that you want to change in stages, it is possible to make quantitative adjustments depending on the number of parts to be deleted. It is also easy to process.
外周面の電極の削除はレーザー加工機等のビームで行う
ことが可能であり、また従来から行われているようにリ
ュータ−、サンドブラストなどで研磨しても良く、電極
だけでなく誘電体セラミックも研磨されても特性の上で
はほとんど影響はない。The removal of the electrode on the outer peripheral surface can be done with a beam from a laser processing machine, etc., or it can be polished with a router, sandblasting, etc. as has been done conventionally, and it is possible to remove not only the electrode but also the dielectric ceramic. Even if it is polished, there is almost no effect on the characteristics.
以上の説明は円筒状の誘電体共振器について説明したが
、角柱状の誘電体共振器あるいは２素子以上が一体化さ
れたブロック形誘電体共振器や誘電体フィルタにも適用
できる。Although the above description has been made regarding a cylindrical dielectric resonator, it can also be applied to a prismatic dielectric resonator, a block-shaped dielectric resonator in which two or more elements are integrated, and a dielectric filter.
本発明によれば、加工が容易となるばかりでなく、調整
の制御が容易な共振周波数の調整方法かえられる。According to the present invention, it is possible to change the method of adjusting the resonant frequency, which not only facilitates processing but also facilitates adjustment control.
また、フィルタなどとして組み込まれてからでも調整が
可能であることも大きな利点である。Another great advantage is that it can be adjusted even after it has been incorporated into a filter or the like.
第１図、第２図はそれぞれ本発明の実施例を示す斜視図
、第３図は削除の寸法と周波数等の変化の関係を示す説
明図である。
１０：誘電体共振器 １１：誘電体セラミック１３．２
３： 外周面電極FIGS. 1 and 2 are perspective views showing embodiments of the present invention, and FIG. 3 is an explanatory diagram showing the relationship between the size of deletion and changes in frequency and the like. 10: Dielectric resonator 11: Dielectric ceramic 13.2
3: Outer surface electrode
Claims (1)
電極を形成した誘電体共振器の共振周波数調整方法にお
いて、該外周面の電極を開放端から一定の幅で円周方向
に所定の長さで削除することによって該誘電体共振器の
共振周波数を調整することを特徴とする誘電体共振器の
共振周波数調整方法。In a method for adjusting the resonant frequency of a dielectric resonator in which electrodes are formed on the inner and outer circumferential surfaces of a cylindrical ceramic dielectric, the electrodes on the outer circumferential surface are arranged at a predetermined length in the circumferential direction with a constant width from the open end. 1. A method for adjusting the resonant frequency of a dielectric resonator, the method comprising: adjusting the resonant frequency of the dielectric resonator by removing the resonant frequency.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27495286A JPS63127607A (en) | 1986-11-18 | 1986-11-18 | Resonance frequency adjusting method for dielectric resonator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27495286A JPS63127607A (en) | 1986-11-18 | 1986-11-18 | Resonance frequency adjusting method for dielectric resonator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63127607A true JPS63127607A (en) | 1988-05-31 |
Family
ID=17548845
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27495286A Pending JPS63127607A (en) | 1986-11-18 | 1986-11-18 | Resonance frequency adjusting method for dielectric resonator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63127607A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5883554A (en) * | 1992-06-26 | 1999-03-16 | Sanyo Electric Co., Ltd. | Coaxial resonator having coupling electrodes and dielectric filter formed therefrom using the same |
-
1986
- 1986-11-18 JP JP27495286A patent/JPS63127607A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5883554A (en) * | 1992-06-26 | 1999-03-16 | Sanyo Electric Co., Ltd. | Coaxial resonator having coupling electrodes and dielectric filter formed therefrom using the same |
| US6191668B1 (en) | 1992-06-26 | 2001-02-20 | Sanyo Electric Co., Ltd. | Coaxial resonator and dielectric filter using the same |
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