JP3440513B2 - Dielectric resonator - Google Patents
Dielectric resonatorInfo
- Publication number
- JP3440513B2 JP3440513B2 JP28751193A JP28751193A JP3440513B2 JP 3440513 B2 JP3440513 B2 JP 3440513B2 JP 28751193 A JP28751193 A JP 28751193A JP 28751193 A JP28751193 A JP 28751193A JP 3440513 B2 JP3440513 B2 JP 3440513B2
- Authority
- JP
- Japan
- Prior art keywords
- dielectric resonator
- resonator
- dielectric
- resonator element
- view
- 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 - Lifetime
Links
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- Control Of Motors That Do Not Use Commutators (AREA)
Description
【発明の詳細な説明】
【０００１】
【産業上の利用分野】この発明は誘電体共振器に関し、
特に、誘電体材料からなる少なくとも２つの柱状の共振
器部分が交差するように一体的に形成された誘電体共振
器素子を有する、ＴＭデュアルモードを用いた誘電体共
振器に関する。
【０００２】
【従来の技術】図７は従来の誘電体共振器の一例を示す
正面図解図であり、図８はその側面図解図である。この
誘電体共振器１は、箱形のケース２を含む。このケース
２の中には、誘電体材料からなる十字形の誘電体共振器
素子３が形成される。すなわち、この誘電体共振器素子
３は、誘電体材料からなる２つの４角柱状の共振器部分
４ａおよび４ｂを有し、それらの共振器部分４ａおよび
４ｂは、十字形に一体的に形成される。また、誘電体共
振器素子３の交差部の側面において、対角となる２つの
角部には、溝５ａおよび５ｂがそれぞれ形成される。こ
れらの溝５ａおよび５ｂは、ｏｄｄモードにおける共振
器周波数とｅｖｅｎモードにおける共振周波数とを異な
らせて、２つの共振器部分４ａおよび４ｂを電磁気的に
結合するためのものである。そして、この誘電体共振器
１では、溝５ａおよび５ｂの長さを変えることによっ
て、２つ共振器部分４ａおよび４ｂの電磁気的な結合係
数が変わる。
【０００３】
【発明が解決しようとする課題】ところが、上述の誘電
体共振器１では、結合係数の異なるものを作る場合に、
誘電体共振器素子３を一度に金型で成形するためには、
溝５ａおよび５ｂの長さに応じて、誘電体共振器素子３
の側面に対応した主になる金型を複数種類用意しなけれ
ばならない場合があり、生産性に問題がある。
【０００４】それゆえに、この発明の主たる目的は、生
産性のよい誘電体共振器を提供することである。
【０００５】
【課題を解決するための手段】この発明は、誘電体材料
からなる少なくとも２つの柱状の共振器部分が交差する
ように一体的に形成された誘電体共振器素子を有し、Ｔ
Ｍモードを用いた誘電体共振器であって、誘電体共振器
素子の主面のうち、柱状の共振器部分の交差部の対角と
なる２つの角の近傍に、前記誘電体共振器部分を電磁気
的に結合するための凹部が形成される、誘電体共振器で
ある。
【０００６】
【作用】この発明にかかる誘電体共振器では、誘電体共
振器素子の主面に形成される凹部の深さを変えることに
よって、全体の共振周波数と一対の共振器部分の電磁気
的な結合係数とが変わる。そのため、共振周波数および
結合係数の異なる誘電体共振器を作る場合において、誘
電体共振器素子を金型で成形する際に、誘電体共振器素
子の側面に対応した主になる金型が１種類ですむという
利点があり、誘電体共振器の生産性が向上する。
【０００７】
【発明の効果】この発明によれば、生産性のよい誘電体
共振器が得られる。
【０００８】この発明の上述の目的，その他の目的，特
徴および利点は、図面を参照して行う以下の実施例の詳
細な説明から一層明らかとなろう。
【０００９】
【実施例】図１はこの発明の一実施例を示す正面図解図
である。この誘電体共振器１０は、たとえば金属などの
導体からなる箱形のケース１２を含む。
【００１０】ケース１２の中には、誘電体材料からなる
十字形の誘電体共振器素子１４が形成される。すなわ
ち、この誘電体共振器素子１４は、誘電体材料からなる
２つの４角柱状の共振器部分１６ａおよび１６ｂを有
し、それらの共振器部分１６ａおよび１６ｂは、十字形
に一体的に形成される。
【００１１】誘電体共振器素子１４の交差部の主面に
は、対角となる２つの角部の近傍に、たとえば円形の２
つの凹部１８ａおよび１８ｂがそれぞれ形成される。こ
れらの凹部１８ａおよび１８ｂは、２つの共振器部分１
６ａおよび１６ｂを電磁気的に結合するためのものであ
る。
【００１２】この誘電体共振器１０は、導体からなるケ
ース１２内の誘電体共振器素子１４が十字形に一体的に
形成された２つの４角柱状の共振器部分１６ａおよび１
６ｂを有するので、ＴＭデュアルモードを用いた誘電体
共振器となる。
【００１３】そして、この誘電体共振器１０では、誘電
体共振器素子１４の主面に形成される凹部１８ａおよび
１８ｂの深さを変えることによって、全体の共振器周波
数と２つ共振器部分１６ａおよび１６ｂの電磁気的な結
合係数とが変わる。たとえば、凹部１８ａおよび１８ｂ
の深さを深く形成すれば、共振周波数および結合係数は
大きくなる。そのため、共振周波数および結合係数の異
なる誘電体共振器１０を作る場合において、誘電体共振
器素子１４を金型で成形する際に、誘電体共振器素子１
４の側面に対応した主になる金型が１種類ですむという
利点があり、誘電体共振器１０の生産性が向上する。
【００１４】図２はこの発明の他の実施例を示す正面図
解図である。図２に示す実施例では、図１に示す実施例
と比べて、特に、誘電体共振器素子１４の交差部の主面
にたとえば長円形の１つの凹部１８が形成される。
【００１５】図３は図２に示す実施例の変形例を示す正
面図解図である。図３に示す実施例では、図２に示す実
施例と比べて、特に、誘電体共振器素子１４の交差部の
主面にたとえば円形の１つの凹部１８が形成される。
【００１６】図４はこの発明のさらに他の実施例を示す
正面図解図である。図４に示す実施例では、特に、誘電
体共振器素子１４の共振器部分１６ａの主面に長方形の
凹部１８が形成される。
【００１７】図５はこの発明の別の実施例を示す正面図
解図である。図５に示す実施例では、特に、誘電体共振
器素子１４の主面に十字形の凹部１８が形成される。
【００１８】そして、図２ないし図５に示す各実施例に
おいても、それぞれ、誘電体共振器素子１４の主面に形
成される凹部１８の深さを変えることによって、全体の
共振器周波数と２つ共振器部分１６ａおよび１６ｂの電
磁気的な結合係数とが変わる。
【００１９】図６はこの発明のさらに別の実施例を示す
正面図解図である。図６に示す実施例では、特に、誘電
体共振器素子１６の主面に十字形の凹部１８ａが形成さ
れ、さらに、誘電体共振器素子１６の交差部の主面に長
円形の凹部１８ｂが形成される。これらの凹部１８ａお
よび１８ｂは、どちらが深く形成されてもよい。図６に
示す実施例においても、凹部１８ａおよび１８ｂの深さ
を変えることによって、全体の共振周波数と２つの共振
器部分１６ａおよび１６ｂの電磁気的な結合係数とが変
わる。
【００２０】なお、上述の各実施例において、それぞ
れ、凹部の位置を偏らせることによっても、全体の共振
周波数を大きくすることができる。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dielectric resonator,
In particular, the present invention relates to a dielectric resonator using a TM dual mode having a dielectric resonator element integrally formed so that at least two columnar resonator portions made of a dielectric material intersect. 2. Description of the Related Art FIG. 7 is a schematic front view showing an example of a conventional dielectric resonator, and FIG. 8 is a schematic side view thereof. This dielectric resonator 1 includes a box-shaped case 2. In this case 2, a cross-shaped dielectric resonator element 3 made of a dielectric material is formed. That is, the dielectric resonator element 3 has two quadrangular prism-shaped resonator portions 4a and 4b made of a dielectric material, and the resonator portions 4a and 4b are integrally formed in a cross shape. You. On the side surface of the intersection of the dielectric resonator element 3, grooves 5a and 5b are formed at two diagonal corners, respectively. These grooves 5a and 5b are for making the resonator frequency in the odd mode different from the resonance frequency in the even mode to electromagnetically couple the two resonator portions 4a and 4b. In the dielectric resonator 1, by changing the length of the grooves 5a and 5b, the electromagnetic coupling coefficient of the two resonator portions 4a and 4b changes. [0003] However, in the case of the above-described dielectric resonator 1 having different coupling coefficients,
In order to mold the dielectric resonator element 3 with a mold at one time,
Depending on the length of the grooves 5a and 5b, the dielectric resonator element 3
In some cases, it is necessary to prepare a plurality of types of main dies corresponding to the above aspects, and there is a problem in productivity. Therefore, a main object of the present invention is to provide a dielectric resonator with good productivity. [0005] According to an aspect of this invention, have a dielectric resonator element which is integrally formed such that at least two columnar resonator portion made of a dielectric material intersect, T
A dielectric resonator using an M mode , wherein the dielectric resonator part is provided near two corners of a main surface of the dielectric resonator element which are diagonal of an intersection of a columnar resonator part. Is a dielectric resonator in which a concave portion for electromagnetically coupling is formed. In the dielectric resonator according to the present invention, by changing the depth of the concave portion formed on the main surface of the dielectric resonator element, the whole resonance frequency and the electromagnetic resonance of the pair of resonator parts are changed. And the effective coupling coefficient change. Therefore, in the case where dielectric resonators having different resonance frequencies and coupling coefficients are manufactured, when the dielectric resonator element is molded by a mold, one main mold corresponding to the side surface of the dielectric resonator element is used. Thus, the productivity of the dielectric resonator is improved. According to the present invention, a dielectric resonator having good productivity can be obtained. The above objects, other objects, features and advantages of the present invention will become more apparent from the following detailed description of embodiments with reference to the drawings. FIG. 1 is a schematic front view showing an embodiment of the present invention. The dielectric resonator 10 includes a box-shaped case 12 made of a conductor such as a metal. In the case 12, a cross-shaped dielectric resonator element 14 made of a dielectric material is formed. That is, the dielectric resonator element 14 has two quadrangular prism-shaped resonator portions 16a and 16b made of a dielectric material, and the resonator portions 16a and 16b are integrally formed in a cross shape. You. The main surface of the intersection of the dielectric resonator element 14 is located near two diagonal corners, for example, a circular 2
Two recesses 18a and 18b are formed respectively. These recesses 18a and 18b are two resonator parts 1
This is for electromagnetically coupling 6a and 16b. The dielectric resonator 10 has two quadrangular prism-shaped resonator portions 16a and 16a in which a dielectric resonator element 14 in a case 12 made of a conductor is integrally formed in a cross shape.
6b, the dielectric resonator uses the TM dual mode. In the dielectric resonator 10, by changing the depth of the concave portions 18a and 18b formed on the main surface of the dielectric resonator element 14, the entire resonator frequency and the two resonator portions 16a are changed. And the electromagnetic coupling coefficient of 16b. For example, recesses 18a and 18b
The resonance frequency and the coupling coefficient are increased if the depth of the groove is formed deep. Therefore, when forming the dielectric resonator element 14 having a different resonance frequency and a different coupling coefficient, the dielectric resonator element
There is an advantage that only one type of main mold is required corresponding to the four side surfaces, and the productivity of the dielectric resonator 10 is improved. FIG. 2 is a schematic front view showing another embodiment of the present invention. In the embodiment shown in FIG. 2, compared to the embodiment shown in FIG. 1, in particular, for example, one oblong concave portion 18 is formed on the main surface of the intersection of the dielectric resonator element 14. FIG. 3 is an illustrative front view showing a modification of the embodiment shown in FIG. In the embodiment shown in FIG. 3, in comparison with the embodiment shown in FIG. 2, for example, one circular concave portion 18 is formed on the principal surface of the intersection of the dielectric resonator element 14. FIG. 4 is a schematic front view showing still another embodiment of the present invention. In the embodiment shown in FIG. 4, in particular, a rectangular recess 18 is formed in the main surface of the resonator portion 16a of the dielectric resonator element 14. FIG. 5 is an illustrative front view showing another embodiment of the present invention. In the embodiment shown in FIG. 5, in particular, a cross-shaped concave portion 18 is formed on the main surface of the dielectric resonator element 14. In each of the embodiments shown in FIGS. 2 to 5, by changing the depth of the concave portion 18 formed on the main surface of the dielectric resonator element 14, the overall resonator frequency and The electromagnetic coupling coefficient of the resonator portions 16a and 16b changes. FIG. 6 is an illustrative front view showing still another embodiment of the present invention. In the embodiment shown in FIG. 6, in particular, a cross-shaped concave portion 18a is formed on the main surface of the dielectric resonator element 16, and an oval concave portion 18b is formed on the main surface of the intersection of the dielectric resonator element 16. It is formed. Either of these recesses 18a and 18b may be formed deeply. Also in the embodiment shown in FIG. 6, by changing the depth of the concave portions 18a and 18b, the overall resonance frequency and the electromagnetic coupling coefficient of the two resonator portions 16a and 16b are changed. In each of the above embodiments, the overall resonance frequency can be increased by biasing the positions of the concave portions.
【図面の簡単な説明】
【図１】この発明の一実施例を示す正面図解図である。
【図２】この発明の他の実施例を示す正面図解図であ
る。
【図３】図２に示す実施例の変形例を示す正面図解図で
ある。
【図４】この発明のさらに他の実施例を示す正面図解図
である。
【図５】この発明の別の実施例を示す正面図解図であ
る。
【図６】この発明のさらに別の実施例を示す正面図解図
である。
【図７】従来の誘電体共振器の一例を示す正面図解図で
ある。
【図８】図７に示す誘電体共振器の側面図解図である。
【符号の説明】
１０ 誘電体共振器
１２ ケース
１４ 誘電体共振器素子
１６ａ，１６ｂ 共振器部分
１８，１８ａ，１８ｂ 凹部BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an illustrative front view showing one embodiment of the present invention. FIG. 2 is an illustrative front view showing another embodiment of the present invention. FIG. 3 is an illustrative front view showing a modified example of the embodiment shown in FIG. 2; FIG. 4 is an illustrative front view showing still another embodiment of the present invention. FIG. 5 is an illustrative front view showing another embodiment of the present invention. FIG. 6 is an illustrative front view showing still another embodiment of the present invention. FIG. 7 is an illustrative front view showing an example of a conventional dielectric resonator. FIG. 8 is an illustrative side view of the dielectric resonator shown in FIG. 7; [Description of Signs] 10 Dielectric resonator 12 Case 14 Dielectric resonator elements 16a, 16b Resonator portions 18, 18a, 18b Recess
フロントページの続き (56)参考文献 実開 平３−3809（ＪＰ，Ｕ) 西川敏夫 石川容平 服部準，直交結 合ＴＭ110モード誘電体共振器を用いた ４ＧＨｚ帯帯域フィルタ，電子情報通信 学会論文誌，日本，電子情報通信学会, 1990年 ２月，Ｃ−１，Ｖｏｌ．Ｊ73− Ｃ−１，Ｎｏ．２，ＰＰ．54−60 (58)調査した分野(Int.Cl.7，ＤＢ名) H01P 1/208 H01P 1/20 H01P 7/10 H01P 11/00 Continued on the front page (56) References Hikaru Hei 3-3809 (JP, U) Toshio Nishikawa Yohei Ishikawa Hattori, 4GHz band filter using orthogonally coupled TM110 mode dielectric resonator, IEICE Transactions Journal, Japan, The Institute of Electronics, Information and Communication Engineers, February 1990, C-1, Vol. J73-C-1, No. 2, PP. 54-60 (58) Field surveyed (Int.Cl. 7 , DB name) H01P 1/208 H01P 1/20 H01P 7/10 H01P 11/00
Claims (1)
状の共振器部分が交差するように一体的に形成された誘
電体共振器素子を有し、ＴＭモードを用いた誘電体共振
器であって、 前記共振器素子の主面のうち、前記柱状の共振器部分の
交差部の対角となる２つの角の近傍に、前記共振器部分
を電磁気的に結合するための凹部が形成される、誘電体
共振器。(57) [Claims 1] made of a dielectric material at least two columnar resonator portion have a dielectric resonator element which is integrally formed so as to intersect, the TM mode The dielectric resonator used , wherein the resonator portion is electromagnetically coupled to two main corners of a cross section of the columnar resonator portion on a main surface of the resonator element. A dielectric resonator in which a concave portion is formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28751193A JP3440513B2 (en) | 1993-10-22 | 1993-10-22 | Dielectric resonator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28751193A JP3440513B2 (en) | 1993-10-22 | 1993-10-22 | Dielectric resonator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07122907A JPH07122907A (en) | 1995-05-12 |
| JP3440513B2 true JP3440513B2 (en) | 2003-08-25 |
Family
ID=17718293
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28751193A Expired - Lifetime JP3440513B2 (en) | 1993-10-22 | 1993-10-22 | Dielectric resonator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3440513B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3991244A4 (en) * | 2019-06-28 | 2022-10-26 | Telefonaktiebolaget Lm Ericsson (Publ) | Resonator apparatus, filter apparatus as well as radio frequency and microwave device |
-
1993
- 1993-10-22 JP JP28751193A patent/JP3440513B2/en not_active Expired - Lifetime
Non-Patent Citations (1)
| Title |
|---|
| 西川敏夫 石川容平 服部準，直交結合ＴＭ１１０モード誘電体共振器を用いた４ＧＨｚ帯帯域フィルタ，電子情報通信学会論文誌，日本，電子情報通信学会，１９９０年 ２月，Ｃ−１，Ｖｏｌ．Ｊ７３−Ｃ−１，Ｎｏ．２，ＰＰ．５４−６０ |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3991244A4 (en) * | 2019-06-28 | 2022-10-26 | Telefonaktiebolaget Lm Ericsson (Publ) | Resonator apparatus, filter apparatus as well as radio frequency and microwave device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07122907A (en) | 1995-05-12 |
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