JPS6184101A - Microwave filter using dielectric resonator - Google Patents

Microwave filter using dielectric resonator

Info

Publication number
JPS6184101A
JPS6184101A JP20561684A JP20561684A JPS6184101A JP S6184101 A JPS6184101 A JP S6184101A JP 20561684 A JP20561684 A JP 20561684A JP 20561684 A JP20561684 A JP 20561684A JP S6184101 A JPS6184101 A JP S6184101A
Authority
JP
Japan
Prior art keywords
resonator
dielectric
electromagnetic field
center
dielectric 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
Application number
JP20561684A
Other languages
Japanese (ja)
Inventor
Izumi Kawakami
川上　泉
Tomokazu Komazaki
友和 駒崎
Katsuhiko Gunji
勝彦 郡司
Norio Onishi
大西　法生
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.)
Oki Electric Industry Co Ltd
Original Assignee
Oki Electric Industry 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 Oki Electric Industry Co Ltd filed Critical Oki Electric Industry Co Ltd
Priority to JP20561684A priority Critical patent/JPS6184101A/en
Publication of JPS6184101A publication Critical patent/JPS6184101A/en
Priority to US07/074,640 priority patent/US4768003A/en
Pending legal-status Critical Current

Links

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
    • H01P1/201—Filters for transverse electromagnetic waves
    • H01P1/205—Comb or interdigital filters; Cascaded coaxial cavities
    • H01P1/2056—Comb filters or interdigital filters with metallised resonator holes in a dielectric block

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)

Abstract

PURPOSE:To decrease the quantity setting an interval between center conductors of a dielectric resonator accurately by dividing a dielectric filter into blocks of several dielectric resonators. CONSTITUTION:An electromagnetic field is generated from a signal from an input terminal 1 by a dielectric resonator 3. The electromagnetic field is given to the center conductors of a resonator 5 and further transmitted to the center conductor of a resonator 6. Then the electromagnetic field from the resonator 6 is transmitted to the center conductor of a resonator by electromagnetic coupling via air. The electromagnetic field is transmitted to the center conductor of a resonator 8 and then the center conductor of the resonator 4. Then the resonance frequency of each dielectric resonator is decided by patterns 9-14 coupled to the center conductors and by the height of the center conductors of the dielectric resonator is reduced.

Description

【発明の詳細な説明】 （産業上の利用分野） この発明は誘電体共振器を用いたマイクロ波フィルタの
構造に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to the structure of a microwave filter using a dielectric resonator.

（従来の技術） 従来よシ、共振器に誘電体共振器すなわち高訪電率を有
する誘電体を用いた高周波フィルタが提案されている。(Prior Art) Conventionally, high frequency filters have been proposed in which a dielectric resonator, that is, a dielectric material having a high contact rate is used as a resonator.

誘電体共振器はストリップ線路共振器と同程度の大きさ
で共振器が実現出来、しかも無負荷Ｑは導波管共振器と
同程度のものが容易に得られるという利点がある。A dielectric resonator has the advantage that a resonator can be realized with a size comparable to that of a strip line resonator, and an unloaded Q of the same magnitude as a waveguide resonator can be easily obtained.

また、実際に製作する場合の加工工作もストリップ線路
共振器よシ複雑であるが、導波管共振器よシは容易であ
る。In addition, the actual manufacturing process is more complicated than that of a stripline resonator, but it is easier than that of a waveguide resonator.

しかし、誘電体共振器は温度特性が致命的に悪いという
欠点があったが、誘電体材料工学の進歩は、この問題を
解決しつつある。しだがって、誘電体共振器を用いた誘
電体フィルタの重要性は極めて大きい。このような理由
から誘電体共振器を使用したフィルタは今後増々利用さ
れると思われる。However, dielectric resonators had the drawback of fatally poor temperature characteristics, but advances in dielectric material engineering are beginning to solve this problem. Therefore, dielectric filters using dielectric resonators are extremely important. For these reasons, filters using dielectric resonators are expected to be used more and more in the future.

このような、誘電体共振器を用いたフィルタとして、本
願出願人よシ特開昭５４−３４４８号、特開昭５５−６
８７０２号、特開昭５６−１４４６０２号のものが提案
されている。As a filter using such a dielectric resonator, the applicant of the present application has disclosed Japanese Patent Application Laid-Open Nos. 54-3448 and 55-6.
No. 8702 and JP-A-56-144602 have been proposed.

従来より、誘電体共振器を用いたマイクロ波フィルタの
構成例を第２図に示す。金属ケースの両端に設けられた
入出力端子２１．２２及びそれらに接続される伝送線路
２３　、２４’が配置され、この伝送線路２３．２４間
にコア状又は角柱状の各各が分離した誘電体共振器２５
，２６，２７゜２８が金属ケースの単一の面に配列され
ている。FIG. 2 shows an example of the configuration of a conventional microwave filter using a dielectric resonator. Input/output terminals 21, 22 provided at both ends of the metal case and transmission lines 23, 24' connected to them are arranged, and between the transmission lines 23, 24, a core-shaped or prismatic-shaped dielectric conductor is connected. body resonator 25
, 26, 27° 28 are arranged on a single surface of the metal case.

フィルタを構成するには、入出力の伝送線路２３゜２４
と誘電体共振器２５．２８との結合を所望の大きさに設
定する。この結合の設定は、共振器２５．２１１と伝送
線路２３．２４との間隔ｄを変えることによυ行ってい
る。すなわち間隔ｄを狭くすれば結合が大きくなシ、間
隔ｄｔ−広げれば結合は小さくなる。また誘電体共振器
２５，２６゜２７　、２．！ｌ各々の間隔もフィルタの
実現に際して必要な結合度を得られる様な間隔に選定す
る必要がある。To configure the filter, input and output transmission lines 23°24
and the dielectric resonators 25 and 28 are set to a desired magnitude. This coupling is set by changing the distance d between the resonator 25.211 and the transmission line 23.24. That is, if the distance d is made narrower, the coupling becomes larger, and if the distance dt is made wider, the coupling becomes smaller. Also, dielectric resonators 25, 26°27, 2. ! It is also necessary to select the interval between each of them so as to obtain the necessary degree of coupling when realizing the filter.

この動作原理を簡単に説明する。第３図は電流と磁界の
関係を示す図であり、３ノは導体である。The principle of this operation will be briefly explained. FIG. 3 is a diagram showing the relationship between current and magnetic field, and 3 is a conductor.

電磁見学によると導体に電流Ｉが流れると電磁界が発生
する。この電流によシ発生した電磁界の大きさは導体か
らの距離が離れるに従って減少する。According to an electromagnetic study, when a current I flows through a conductor, an electromagnetic field is generated. The magnitude of the electromagnetic field generated by this current decreases as the distance from the conductor increases.

誘電体共振器と伝送線路との結合は電磁界を介して行な
われるので、誘電体共振器と伝送線路の距離を変えるこ
とによシ結合量を変化させることができる。これが第２
図に示す従来のフィルタにおいて間隔を小さくすると結
合量が大きくなる理由である。Since the dielectric resonator and the transmission line are coupled together via an electromagnetic field, the amount of coupling can be changed by changing the distance between the dielectric resonator and the transmission line. This is the second
This is the reason why in the conventional filter shown in the figure, the amount of coupling increases as the spacing decreases.

Claims (1)

【特許請求の範囲】[Claims] 均質で単体の誘電体に設けた複数個の中心導体を形成し
前記中心導体に結合パターンを具備し前記中心導体間は
前記誘電体で充たされた複数の誘電体共振器により形成
するマイクロ波フィルタの複数を空間で電磁界結合した
ことを特徴とするマイクロ波フィルタ。The microwave is formed by forming a plurality of center conductors provided on a homogeneous single dielectric material, providing a coupling pattern on the center conductor, and forming a plurality of dielectric resonators filled with the dielectric material between the center conductors. A microwave filter characterized by electromagnetic field coupling of multiple filters in space.
JP20561684A 1984-09-28 1984-10-02 Microwave filter using dielectric resonator Pending JPS6184101A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP20561684A JPS6184101A (en) 1984-10-02 1984-10-02 Microwave filter using dielectric resonator
US07/074,640 US4768003A (en) 1984-09-28 1987-07-17 Microwave filter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20561684A JPS6184101A (en) 1984-10-02 1984-10-02 Microwave filter using dielectric resonator

Publications (1)

Publication Number Publication Date
JPS6184101A true JPS6184101A (en) 1986-04-28

Family

ID=16509825

Family Applications (1)

Application Number Title Priority Date Filing Date
JP20561684A Pending JPS6184101A (en) 1984-09-28 1984-10-02 Microwave filter using dielectric resonator

Country Status (1)

Country Link
JP (1) JPS6184101A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4768003A (en) * 1984-09-28 1988-08-30 Oki Electric Industry Co., Inc. Microwave filter
US8308431B2 (en) 2006-09-29 2012-11-13 Jtekt Corporation Turbocharger

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59114902A (en) * 1982-12-21 1984-07-03 Fujitsu Ltd Dielectric filter
JPS59119402A (en) * 1982-12-27 1984-07-10 Hitachi Ltd Operating place selecting circuit

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59114902A (en) * 1982-12-21 1984-07-03 Fujitsu Ltd Dielectric filter
JPS59119402A (en) * 1982-12-27 1984-07-10 Hitachi Ltd Operating place selecting circuit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4768003A (en) * 1984-09-28 1988-08-30 Oki Electric Industry Co., Inc. Microwave filter
US8308431B2 (en) 2006-09-29 2012-11-13 Jtekt Corporation Turbocharger

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