JPS6276301A - Resonator - Google Patents

Resonator

Info

Publication number
JPS6276301A
JPS6276301A JP21571385A JP21571385A JPS6276301A JP S6276301 A JPS6276301 A JP S6276301A JP 21571385 A JP21571385 A JP 21571385A JP 21571385 A JP21571385 A JP 21571385A JP S6276301 A JPS6276301 A JP S6276301A
Authority
JP
Japan
Prior art keywords
magnetic
dielectric resonator
resonator
magnetic field
strength
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
JP21571385A
Other languages
Japanese (ja)
Inventor
Yohei Ishikawa
容平 石川
Hiroshi Tamura
博 田村
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 JP21571385A priority Critical patent/JPS6276301A/en
Publication of JPS6276301A publication Critical patent/JPS6276301A/en
Pending legal-status Critical Current

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  • Control Of Motors That Do Not Use Commutators (AREA)
  • Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)

Abstract

PURPOSE:To minimize the deterioration in the Q due to the presence of a magnetic substance by arranging the magnetic substance to an axial center of a dielectric resonator. CONSTITUTION:The dielectric resonator 1 is a cylinder having a circular through hole 1a at its axial center. A cylindrical ferrite 4 as the magnetic substance is inserted into the through hole 1a and fixed in the through hole1a by an adhesives. While the electric field strength of the resonator 1 is small at the center of the resonator 1 and large at the peripheral as shown in curve (e), the strength of the magnetic field is large in the vicinity of the axial center of the resonator as shown n curve (m).Thus, the deterioration in the Q of the resonator 1 is avoided.

Description

【発明の詳細な説明】 (産業上の利用分野) 本発明は電圧により発振周波数が制御されるマイクロ波
電圧制御発振装置等に使用される共振装置に関する。
DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a resonance device used in a microwave voltage-controlled oscillator or the like whose oscillation frequency is controlled by voltage.

(従来技術) 従来、マイクロ波電圧制御発振装置では、容易に高いQ
を得ることができることから、誘電体共振器が使用され
ており、この誘電体共振器の上にフェライトを装荷して
これに磁界を印加し、その磁界の強さを制御することに
よりフェライトの透磁率を変化させて発振周波数を変化
させるものが知られている(たとえば、特開昭55−1
173IO号公報参照)。このように、誘電体共振器の
上にフェライトを装荷してその透磁率を変化させれば、
誘電体共振器の外部を通して取り巻く磁界が通過する長
さが変化するので、誘電体共振器の共振周波数が変化し
発振周波数が変化する。
(Prior art) Conventionally, microwave voltage controlled oscillators can easily achieve high Q.
Since it is possible to obtain There are known devices that change the oscillation frequency by changing the magnetic property (for example, Japanese Patent Laid-Open No. 55-1
(See Publication No. 173IO). In this way, if ferrite is loaded on top of the dielectric resonator and its magnetic permeability is changed,
Since the length through which the surrounding magnetic field passes through the outside of the dielectric resonator changes, the resonant frequency of the dielectric resonator changes and the oscillation frequency changes.

ところで、上記フェライトとして高周波損失の小さいも
のを使用すれば、誘電体共振器のQはあまり低下するこ
とはなく、マイクロ波電圧制御発振器のQを高くするこ
とができる。
By the way, if a ferrite with low high frequency loss is used as the ferrite, the Q of the dielectric resonator will not decrease much and the Q of the microwave voltage controlled oscillator can be increased.

(発明の目的) 本発明の目的は、従来のマイクロ波電圧制御発振装置よ
りもさらに高いQを有する誘電体共振装置を提供するこ
とである。
(Objective of the Invention) An object of the present invention is to provide a dielectric resonator device having a higher Q than conventional microwave voltage controlled oscillator devices.

(発明の構成) このため、本発明は、TE、、モードで使用する誘電体
共振器の軸心部に磁性体を配置し、誘電体共振器を内部
に支持するケース外から上記磁性体に磁気回路より磁界
を印加し、この磁界の強さを変化させて誘電体共振器の
共振周波数を変化させるようにしたものである。すなわ
ち、本発明は、磁性体を誘電体共振器の軸心部に配置す
ることにより、磁性体の存在によるQの低下を最小限に
抑えたものである。
(Structure of the Invention) For this reason, the present invention arranges a magnetic material at the axial center of a dielectric resonator used in the TE mode, and connects the magnetic material from outside the case that supports the dielectric resonator inside. A magnetic field is applied from a magnetic circuit, and the strength of this magnetic field is changed to change the resonant frequency of the dielectric resonator. That is, the present invention minimizes the reduction in Q due to the presence of the magnetic material by arranging the magnetic material at the axial center of the dielectric resonator.

(発明の効果) 本発明によれば、誘電体共振器中の電界強度が小さい部
位に磁性体を配置するようにしたので、磁性体によるQ
の低下が小さくなり、電圧により共振周波数を変えるこ
とができるQの高い共振装置を得ることができる。
(Effects of the Invention) According to the present invention, since the magnetic material is disposed in a portion of the dielectric resonator where the electric field strength is small, the Q due to the magnetic material is
It is possible to obtain a high-Q resonant device in which the drop in Q is small, and the resonant frequency can be changed depending on the voltage.

(実施例) 以下、添付図面を参照して本発明の詳細な説明する。(Example) Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

第1図に示すように、T E o rδモードで使用す
4誘電体共振器lが金属製のケース2内にて、ε。
As shown in FIG. 1, four dielectric resonators 1 used in the T E or δ mode are housed in a metal case 2 at ε.

−2〜3程度の低い誘電率を存する誘電体材料よりなる
サポート3により、上記ケース2の底板2aに対して平
行に支持されている。上記誘電体共振器lはその軸心部
に円形の貫通孔1aを有する円柱形状のもので、その貫
通孔1aには磁性体として円柱状のフェライト4が嵌装
され、接着剤(図示せず。)等により、貫通孔la内に
固定されている。
It is supported parallel to the bottom plate 2a of the case 2 by a support 3 made of a dielectric material having a low dielectric constant of about -2 to 3. The dielectric resonator 1 has a cylindrical shape with a circular through hole 1a in its axial center, and a cylindrical ferrite 4 is fitted as a magnetic material into the through hole 1a, and an adhesive (not shown) is inserted into the through hole 1a. ) etc., and is fixed in the through hole la.

上記ケース2には、人力用コネクタ5および出力用コネ
クタ6が取り付けられている。これら人力用コネクタ5
および出力用コネクタ6の各中心導体(図示せず。)に
は直線状の導体よりなるアンテナ7および8が夫々半田
付けされている。アンテナ7は、コネクタ5からこのコ
ネクタ5が取着されたケース2の側板2bに対向する側
板(図示せず。)に向かって突出し、誘電体共振器lと
電磁的に結合する。同様に、アンテナ8は、ケース2の
側板2bに対向する上記側板に向かって突出し、誘電体
共振器lと電磁的に結合する。
A human power connector 5 and an output connector 6 are attached to the case 2. These human power connectors 5
Antennas 7 and 8 made of linear conductors are soldered to each center conductor (not shown) of the output connector 6, respectively. The antenna 7 protrudes from the connector 5 toward a side plate (not shown) opposite to the side plate 2b of the case 2 to which the connector 5 is attached, and is electromagnetically coupled to the dielectric resonator l. Similarly, the antenna 8 protrudes toward the side plate opposite to the side plate 2b of the case 2, and is electromagnetically coupled to the dielectric resonator l.

一方、上記ケース2の外部には、フェライト4に対向し
て、ケース2の底板2aおよび天板2C上に夫々永久磁
石9および10が固定されている。
On the other hand, outside the case 2, permanent magnets 9 and 10 are fixed on the bottom plate 2a and the top plate 2C of the case 2, respectively, facing the ferrite 4.

これら永久磁石9および10は、フェライト4に予め一
定の磁界を印加するためのものである。
These permanent magnets 9 and 10 are for applying a constant magnetic field to the ferrite 4 in advance.

上記永久磁石9.lOおよびケース2は、コイ1   
       ル12が巻回されたU字状の磁気コア口
の両脚部11aとllbとの間に挟まれ、永久磁石9は
磁□ 気コア11の脚部11aの先端面に対向し、また、永久
磁石10は磁気コアIKの脚部11bの先端面に対向し
ている。上記磁気コアitは、フェライト4に印加され
る磁界の強さを、コイルI2に流れる電流に応じて変化
させる磁気回路を構成する。
Permanent magnet 9. lO and case 2 is Koi 1
The permanent magnet 9 is sandwiched between both legs 11a and llb of the U-shaped magnetic core opening around which the magnetic core 12 is wound. The magnet 10 faces the end surface of the leg portion 11b of the magnetic core IK. The magnetic core it constitutes a magnetic circuit that changes the strength of the magnetic field applied to the ferrite 4 in accordance with the current flowing through the coil I2.

このような構成において、コイル12に印加される電圧
を変化させてコイル12に流れる電流を変化させ、磁気
コア11からフェライト4に印加される磁界の強さを変
化させると、フェライト4の透磁率が変化する。これに
より、フェライト4から出た磁力線の走る経路が変化し
、誘電体共振器lの共振周波数が変化する。
In such a configuration, when the voltage applied to the coil 12 is changed to change the current flowing through the coil 12 and the strength of the magnetic field applied from the magnetic core 11 to the ferrite 4 is changed, the magnetic permeability of the ferrite 4 is changed. changes. As a result, the path of the magnetic lines of force coming out of the ferrite 4 changes, and the resonant frequency of the dielectric resonator l changes.

この場合、誘電体共振器lの電界強度は、第2図におい
て曲線eで示すように、誘電体共振器1の中心部で小さ
く、周辺部で大きくなっているのに対し、磁界の強さは
曲線mで示すように、誘電体共振器1の軸心部の近傍で
大きくなる。これにより、第1図の共振装置では、誘電
体共振器lの電界の中から磁性体、すなわちフェライト
4が排除された構造となり、誘電体共振器lのQの低下
がない。従って、電圧により共振周波数を変化さけるこ
とのできる共振装置において、Qを高くすることができ
る。
In this case, the electric field strength of the dielectric resonator 1 is small at the center of the dielectric resonator 1 and large at the periphery, as shown by the curve e in FIG. As shown by the curve m, becomes large near the axial center of the dielectric resonator 1. As a result, the resonator device shown in FIG. 1 has a structure in which the magnetic material, that is, the ferrite 4 is excluded from the electric field of the dielectric resonator l, and there is no reduction in the Q of the dielectric resonator l. Therefore, in a resonant device whose resonant frequency can be prevented from changing due to voltage, Q can be increased.

【図面の簡単な説明】 第1図は本発明に係る共振装置の一実施例の説明図、 第2図は第1図の共振装置の誘電体共振器の電界強度お
よび磁界強度の説明図である。 l・・・誘電体共振器、  2・・・ケース、3・・・
サポート、  4・・・フェライト(磁性体)、9、l
O・・・永久磁石、  11・・・磁気コア、12・・
・コイル。
[Brief Description of the Drawings] Fig. 1 is an explanatory diagram of an embodiment of the resonant device according to the present invention, and Fig. 2 is an explanatory diagram of the electric field strength and magnetic field strength of the dielectric resonator of the resonant device shown in Fig. 1. be. l...dielectric resonator, 2...case, 3...
Support, 4... Ferrite (magnetic material), 9, l
O...Permanent magnet, 11...Magnetic core, 12...
·coil.

Claims (1)

【特許請求の範囲】[Claims] (1)軸心部に貫通孔を備えたTE_0_1モードで使
用する誘電体共振器と、この誘電体共振器の貫通孔に嵌
装されてなる磁性体と、内部に上記誘電体共振器が収容
されて支持されるケースと、ケース外部に配置されて上
記磁性体に磁界を印加する磁気回路と、この磁気回路よ
り磁性体に印加される磁界の強さを制御する磁界制御手
段とを備え、磁性体に印加される磁界の強さにより共振
周波数が制御されるようにしたことを特徴とする共振装
置。
(1) A dielectric resonator used in TE_0_1 mode with a through hole in the axial center, a magnetic material fitted into the through hole of this dielectric resonator, and the above dielectric resonator housed inside. a magnetic circuit disposed outside the case for applying a magnetic field to the magnetic body, and a magnetic field control means for controlling the strength of the magnetic field applied to the magnetic body by the magnetic circuit, A resonant device characterized in that a resonant frequency is controlled by the strength of a magnetic field applied to a magnetic material.
JP21571385A 1985-09-27 1985-09-27 Resonator Pending JPS6276301A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP21571385A JPS6276301A (en) 1985-09-27 1985-09-27 Resonator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21571385A JPS6276301A (en) 1985-09-27 1985-09-27 Resonator

Publications (1)

Publication Number Publication Date
JPS6276301A true JPS6276301A (en) 1987-04-08

Family

ID=16676934

Family Applications (1)

Application Number Title Priority Date Filing Date
JP21571385A Pending JPS6276301A (en) 1985-09-27 1985-09-27 Resonator

Country Status (1)

Country Link
JP (1) JPS6276301A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5184097A (en) * 1990-02-23 1993-02-02 Alcatel Transmission Par Faisceaux Hertziens Agile microwave filter having at least one ferrite resonator
US6127907A (en) * 1997-11-07 2000-10-03 Nec Corporation High frequency filter and frequency characteristics regulation method therefor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5184097A (en) * 1990-02-23 1993-02-02 Alcatel Transmission Par Faisceaux Hertziens Agile microwave filter having at least one ferrite resonator
US6127907A (en) * 1997-11-07 2000-10-03 Nec Corporation High frequency filter and frequency characteristics regulation method therefor

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