JPS62183608A - Manufacture of dielectric resonator - Google Patents

Manufacture of dielectric resonator

Info

Publication number
JPS62183608A
JPS62183608A JP2618686A JP2618686A JPS62183608A JP S62183608 A JPS62183608 A JP S62183608A JP 2618686 A JP2618686 A JP 2618686A JP 2618686 A JP2618686 A JP 2618686A JP S62183608 A JPS62183608 A JP S62183608A
Authority
JP
Japan
Prior art keywords
dielectric resonator
resonator element
dielectric
adjusted
volume
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
Application number
JP2618686A
Other languages
Japanese (ja)
Inventor
Yukio Mori
盛 幸雄
You Funada
揚 船田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Murata Manufacturing Co Ltd
Original Assignee
Murata Manufacturing Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Murata Manufacturing Co Ltd filed Critical Murata Manufacturing Co Ltd
Priority to JP2618686A priority Critical patent/JPS62183608A/en
Publication of JPS62183608A publication Critical patent/JPS62183608A/en
Pending legal-status Critical Current

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Abstract

PURPOSE:To easily and surely attain the oscillation frequency adjustment with high accuracy by grinding at least one opposed face in both opposed faces of a dielectric resonator element so as to adjust the volume of the dielectric resonator element thereby adjusting the oscillated frequency of the said dielectric resonator. CONSTITUTION:A conductor case 1 is formed by adhering incorporately a bottom plate 2 and a cover 3 at both upper/lower openings of a cylindrical main body and its inner space 4 is enclosed. A fitting base 5 is provided at the middle on the bottom plate 2 of the inner space 4 and the dielectric resonator element 6 is fixed onto the fitting base 5. The dielectric resonator element 6 is a dielectric made of ceramic formed cylindrically. The volume of the element 6 in the resonator having the constitution above is adjusted by grinding the upper face (one opposed face) 6a of the dielectric resonator element 6 or the lower face (other opposed face) 6b, thereby, the oscillated frequency is adjusted to desired value. Thus, in adjusting the oscillated frequency of the element 6, since the surface grinding method is adopted, the installation is simplified and the height is adjusted with high accuracy.

Description

【発明の詳細な説明】 〈産業上の利用分野〉 本発明は、誘電体共振器に関する。[Detailed description of the invention] <Industrial application field> The present invention relates to a dielectric resonator.

〈従来の技術〉 例えば、T E o + gモードを利用する誘電体共
振器は、円柱形または円筒形に形成された誘電体共振器
素子を導体ケース内の中心に密閉状に収納してなるもの
が知られている。
<Prior art> For example, a dielectric resonator that utilizes the T E o + g mode is formed by housing a dielectric resonator element formed in a cylindrical or cylindrical shape in a hermetically sealed manner at the center of a conductive case. something is known.

このような誘電体共振器では、誘電体共振器素子の容積
は、発振周波数特性に大きく影響を与える。すなわち、
該誘電体共振器素子の容積が設定値よりも大きいと、発
振周波数は低下し、反対に、その容積が小さいと、発振
周波数は高くなるのである。
In such a dielectric resonator, the volume of the dielectric resonator element greatly influences the oscillation frequency characteristics. That is,
When the volume of the dielectric resonator element is larger than the set value, the oscillation frequency decreases, and on the other hand, when the volume is small, the oscillation frequency increases.

そこで、従来では、誘電体共振器素子の外径寸法を所定
値よりやや大きく形成しておき、個々の誘電体共振器の
発振周波数をチューニングする際に、該素子の外周面を
研摩して容積を調整していた。
Therefore, in the past, the outer diameter of the dielectric resonator element was formed slightly larger than a predetermined value, and when tuning the oscillation frequency of each dielectric resonator, the outer peripheral surface of the element was polished to increase the volume. was adjusting.

〈発明が解決しようとする問題点〉 しかしながら、誘電体共振器素子はセラミック材で構成
されるものであり、これの外周面を歪みなく、高精度に
研摩するためには、該素子の各部の寸法を予め高精度に
成形しておかなければならず、その加工コストが嵩むと
いう問題点があった。
<Problems to be Solved by the Invention> However, the dielectric resonator element is composed of a ceramic material, and in order to polish the outer peripheral surface of the element with high precision without distortion, it is necessary to polish each part of the element. There is a problem in that the dimensions must be preformed with high precision, which increases the processing cost.

本発明はかかる従来の問題点に鑑み、従来例よりも粗い
寸法精度を有する誘電体共振器素子の使用を可能にして
、コストダウンを図ることを目的とする。
In view of these conventional problems, it is an object of the present invention to enable the use of a dielectric resonator element having coarser dimensional accuracy than the conventional example, thereby reducing costs.

く問題点を解決するための手段〉 本発明ではこのような目的を達成するために、誘電体共
振器素子の両対向面のうち、少なくとも一方の対向面を
研摩加工して、該誘電体共振器素子の容積を調整するこ
とにより、この誘電体共振器の発振周波数を調整する方
法に特徴を有するものである。
Means for Solving the Problems In the present invention, in order to achieve the above object, at least one of the opposing surfaces of the dielectric resonator element is polished to improve the dielectric resonance. This method is characterized by a method of adjusting the oscillation frequency of the dielectric resonator by adjusting the volume of the resonator element.

〈作用〉 上記の方法によると、例えば、誘電体共振器素子の上面
を、平面研摩の手法により研摩加工することにより、該
素子の発振周波数を調整することができる。したがって
、従来のように外周面を研摩加工する方法よりも、容易
かつ正確に素子の容積を調整できるため、寸法精度の粗
い素子の使用が可能になる。
<Operation> According to the above method, the oscillation frequency of the dielectric resonator element can be adjusted by, for example, polishing the upper surface of the dielectric resonator element using a surface polishing technique. Therefore, the volume of the element can be adjusted more easily and accurately than in the conventional method of polishing the outer circumferential surface, making it possible to use elements with poor dimensional accuracy.

〈実施例〉 以下、本発明を図面に示す実施例に基づき詳細に説明す
る。
<Example> Hereinafter, the present invention will be described in detail based on an example shown in the drawings.

図は本発明が適用される誘電体共振器の実施例の縦断面
図である。この図において、符号1は金属製の導体ケー
スである。この導体ケースlは円筒形の本体の上下両開
口部に底板2と蓋3とを一体に接合してなるもので、そ
の内部空間4は密閉状に構成されている。内部空間4の
底板2上の中央には、取付台5が設けられ、この取付台
5上に誘電体共振器素子6が載置固定されている。誘電
体共振器素子6は円柱形に形成されたセラミック製の誘
電体からなる。
The figure is a longitudinal sectional view of an embodiment of a dielectric resonator to which the present invention is applied. In this figure, reference numeral 1 indicates a metal conductor case. This conductor case 1 is formed by integrally joining a bottom plate 2 and a lid 3 to both upper and lower openings of a cylindrical main body, and its internal space 4 is constructed in a sealed manner. A mounting base 5 is provided at the center of the bottom plate 2 of the internal space 4, and a dielectric resonator element 6 is mounted and fixed on the mounting base 5. The dielectric resonator element 6 is made of a cylindrical ceramic dielectric.

この誘電体共振器素子6と、導体ケース1との寸法比は
、導体ケース1の径寸法り。と誘電体共振器素子6の径
寸法Drとがり。>2Drとなるように設定されている
。また、導体ケースlの高さ寸法り。と、誘電体共振器
素子6の高さ寸法Lrも同様にり。>2Lrとなるよう
に設定されている。
The dimensional ratio between this dielectric resonator element 6 and the conductor case 1 is the diameter of the conductor case 1. and the diameter dimension Dr of the dielectric resonator element 6. >2Dr. Also, the height dimension of the conductor case l. The height dimension Lr of the dielectric resonator element 6 is also the same. >2Lr.

この場合に、素子6の各寸法が、対応する導体ケース1
の寸法の172よりも大きくなると、誘電体共振器自体
の無負荷Qが劣化して、発振出力が低下したり、ときに
は、出力されない場合が生じる。特に、高さ寸法Lrの
方向については、t、o/Lrは精度良くコントロール
する必要があるが、その反面径寸法Dr力方向ついては
、D、/Drはり、/Lrに対してラフでよい。
In this case, each dimension of the element 6 corresponds to the conductor case 1.
If the dimension is larger than 172, the no-load Q of the dielectric resonator itself deteriorates, resulting in a decrease in oscillation output, or in some cases, no output at all. In particular, in the direction of the height dimension Lr, t and o/Lr need to be controlled with high precision, but on the other hand, the diameter dimension Dr can be roughly controlled with respect to D, /Dr beam, and /Lr.

このような構成を有する誘電体共振器は、前記誘電体共
振器素子6の上面(対向面の一方)6aまたは下面(対
向面の他方)6bを研摩加工することにより、この素子
6の容積を調整し、これによって、発振周波数を所望値
に調整している。
In the dielectric resonator having such a configuration, the volume of the dielectric resonator element 6 can be reduced by polishing the upper surface (one of the opposing surfaces) 6a or the lower surface (the other opposing surface) 6b of the dielectric resonator element 6. This adjusts the oscillation frequency to a desired value.

したがって、誘電体共振器素子6は成形時には、その高
さ寸法が余裕をもって寸法設定されている。
Therefore, the height of the dielectric resonator element 6 is set with a sufficient margin during molding.

このようにすれば、該素子6の発振周波数の調整を行な
う際に、平面研摩の手法を採用することができるため、
装置が簡略化され、しかも高精度でその高さ寸法を調整
できる。このため、寸法精度が比較的粗い誘電体共振器
素子6を使用してら、充分に精密な周波数調整を行なう
ことができる。
In this way, when adjusting the oscillation frequency of the element 6, it is possible to employ a surface polishing method.
The device is simplified and its height can be adjusted with high precision. Therefore, sufficiently precise frequency adjustment can be performed even though the dielectric resonator element 6 having relatively rough dimensional accuracy is used.

本発明者が実験を試みたところ、この実施例の図に示さ
れるようなT E o l #モードの誘電体共振器に
おいては、従来方法を用いた場合に必要であった誘電体
共振器素子6の径寸法Drの寸法精度±0゜05xxに
対して、10倍精度の悪い径寸法Drの寸法精度±0.
5rtutrの素子6を使用しても、例えば上面を研摩
することによって必要な発振周波数に設定できることが
確認された。
As a result of experiments conducted by the present inventor, it was found that in a T E o l # mode dielectric resonator as shown in the figure of this example, the dielectric resonator element required when using the conventional method was The dimensional accuracy of the diameter dimension Dr, which is 10 times less accurate, is ±0.0.
It has been confirmed that even if the element 6 of 5 rtutr is used, the required oscillation frequency can be set by polishing the top surface, for example.

なお、本発明では、誘電体共振器素子6の上面の他、下
面を研摩してもよく、また、必要に応じてその両方を研
摩するようにしてもよい。また、誘電体共振器素子の形
状としては、前記実施例のような円柱形の他、円筒形の
ものも含まれることは勿論である。
In addition, in the present invention, in addition to the upper surface of the dielectric resonator element 6, the lower surface may be polished, or both may be polished as necessary. Further, the shape of the dielectric resonator element includes, of course, a cylindrical shape in addition to the cylindrical shape as in the above embodiment.

〈発明の効果〉 以上のように本発明によれば、誘電体共振器素子の両対
向面のうち、少なくとも一方の対向面を研摩加工して、
該誘電体共振器素子の容積を調整することにより、この
誘電体共振器の発振周波数を調整するようにしたので、
容易かつ確実に高精度の発振周波数調整が可能になる。
<Effects of the Invention> As described above, according to the present invention, at least one of the opposing surfaces of the dielectric resonator element is polished,
By adjusting the volume of the dielectric resonator element, the oscillation frequency of the dielectric resonator is adjusted.
It becomes possible to easily and reliably adjust the oscillation frequency with high precision.

したがって、従来例よりも粗い寸法精度を有する誘電体
共振器素子を使用することができるうえ、このように寸
法精度の粗い誘電体共振器を使用することでコストダウ
ンを図ることができる。
Therefore, it is possible to use a dielectric resonator element having a rougher dimensional accuracy than in the conventional example, and it is also possible to reduce costs by using a dielectric resonator with such a rough dimensional accuracy.

【図面の簡単な説明】[Brief explanation of drawings]

図は本発明が適用される誘電体共振器の実施例の縦断面
図である。 ■・・・導体ケース、 6・・・誘電体共振器素子、 出 願 人  株式会社 村田製作所 代  理  人   弁 理 士  岡  1) 和 
 秀因
The figure is a longitudinal sectional view of an embodiment of a dielectric resonator to which the present invention is applied. ■...Conductor case, 6...Dielectric resonator element, Applicant Murata Manufacturing Co., Ltd. Representative Patent Attorney Oka 1) Kazu
Hidein

Claims (1)

【特許請求の範囲】[Claims] (1)円柱形または円筒形に形成された誘電体共振器素
子と、この誘電体共振器素子が収納される導体ケースと
を備えてなる誘電体共振器の製造方法において、 前記誘電体共振器素子の両対向面のうち、少なくとも一
方の対向面を研摩加工して、該誘電体共振器素子の容積
を調整することにより、この誘電体共振器の発振周波数
を調整してなることを特徴とする誘電体共振器の製造方
法。
(1) A method for manufacturing a dielectric resonator comprising a dielectric resonator element formed in a cylindrical or cylindrical shape and a conductor case in which the dielectric resonator element is housed, wherein the dielectric resonator The oscillation frequency of the dielectric resonator element is adjusted by polishing at least one of the opposing surfaces of the element to adjust the volume of the dielectric resonator element. A method for manufacturing a dielectric resonator.
JP2618686A 1986-02-07 1986-02-07 Manufacture of dielectric resonator Pending JPS62183608A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2618686A JPS62183608A (en) 1986-02-07 1986-02-07 Manufacture of dielectric resonator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2618686A JPS62183608A (en) 1986-02-07 1986-02-07 Manufacture of dielectric resonator

Publications (1)

Publication Number Publication Date
JPS62183608A true JPS62183608A (en) 1987-08-12

Family

ID=12186471

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2618686A Pending JPS62183608A (en) 1986-02-07 1986-02-07 Manufacture of dielectric resonator

Country Status (1)

Country Link
JP (1) JPS62183608A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5714920A (en) * 1992-06-01 1998-02-03 Poseidon Scientific Instruments Pty Ltd. Dielectrically loaded cavity resonator
US6843956B2 (en) 2000-08-29 2005-01-18 Epcos Ag Method for producing a ceramic silver niobium tantalate body
US6956001B2 (en) 2000-08-29 2005-10-18 Epcos Ag Dielectric Ceramic Material

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5714920A (en) * 1992-06-01 1998-02-03 Poseidon Scientific Instruments Pty Ltd. Dielectrically loaded cavity resonator
US5990767A (en) * 1992-06-01 1999-11-23 Poseidon Scientific Instruments Pty Ltd Dielectrically loaded cavity resonator
US6843956B2 (en) 2000-08-29 2005-01-18 Epcos Ag Method for producing a ceramic silver niobium tantalate body
US6956001B2 (en) 2000-08-29 2005-10-18 Epcos Ag Dielectric Ceramic Material

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