JPS62217701A - Branching filter - Google Patents
Branching filterInfo
- Publication number
- JPS62217701A JPS62217701A JP6129086A JP6129086A JPS62217701A JP S62217701 A JPS62217701 A JP S62217701A JP 6129086 A JP6129086 A JP 6129086A JP 6129086 A JP6129086 A JP 6129086A JP S62217701 A JPS62217701 A JP S62217701A
- Authority
- JP
- Japan
- Prior art keywords
- dielectric
- coupling
- elements
- resonant element
- resonance
- 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
- 230000008878 coupling Effects 0.000 claims abstract description 40
- 238000010168 coupling process Methods 0.000 claims abstract description 40
- 238000005859 coupling reaction Methods 0.000 claims abstract description 40
- 239000003990 capacitor Substances 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 238000010276 construction Methods 0.000 description 2
- 238000005476 soldering Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000009966 trimming 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】
〔概要〕
分波器において、第１の誘電体共振素子を逐次結合した
部分と、これの一端の第１の誘電体共振素子に結合する
第１の結合手段と、この結合手段に結合する第２の誘電
体共振素子とを一つの誘電体ブロックで形成し、上記の
第１の誘電体共振素子部内の他端の第１の誘電体共振素
子及び第２の誘電体共振素子に第２及び第３の結合手段
を介して他の回路及び別の第２の誘電体共振素子を結合
させて構成することにより、第１の結合手段を介して結
合される第１と第２の誘電体共振素子の結合部分の調整
工数の削減を図るものである。[Detailed Description of the Invention] [Summary] In a duplexer, a portion in which first dielectric resonant elements are successively coupled, and a first coupling means that couples to the first dielectric resonant element at one end of the portion; A second dielectric resonant element coupled to this coupling means is formed of one dielectric block, and the first dielectric resonant element and the second dielectric resonant element at the other end in the first dielectric resonant element section are formed of one dielectric block. By configuring the body resonant element by coupling another circuit and another second dielectric resonant element via the second and third coupling means, the first This is intended to reduce the number of man-hours required for adjusting the coupling portion between the first dielectric resonant element and the second dielectric resonant element.
本発明は例えば同軸形誘電体フィルタを結合して構成す
る分波器の改良に関するものである。The present invention relates to an improvement in a duplexer configured by combining, for example, coaxial dielectric filters.
誘電体共振器は小型、軽量で構造が簡単な為に広（使用
されている。例えば、８００〜９００Ｍｌ１ｚ帯の周波
数を使用して同時送受信を行う自動車電話用無線装置で
は、誘電体共振器を用いて動作中心周波数の異なる帯域
通過形フィルタを結合して分波器を構成しているが、所
用のフィルタ特性を得る為の調整工数の削減が要望され
ている。Dielectric resonators are widely used because they are small, lightweight, and have a simple structure. For example, in car phone wireless equipment that performs simultaneous transmission and reception using frequencies in the 800 to 900 Ml1z band, dielectric resonators are used. A duplexer is constructed by combining band-pass filters with different operating center frequencies, but there is a desire to reduce the number of adjustment steps required to obtain the desired filter characteristics.
第３図は従来例の構成図、第４図は金属棒を用いた結合
部の構成図を示す。FIG. 3 is a block diagram of a conventional example, and FIG. 4 is a block diagram of a connecting portion using a metal rod.
以下、誘電体フィルタの構成を第３図により説明する。The configuration of the dielectric filter will be explained below with reference to FIG.
図の第１のフィルタ及び第２のフィルタは直方体の誘電
体ブロック１，２に定められた間隔で深さλ／４の貫通
孔１１〜１４及び２１〜２３が設けられ、上面Ａを除い
て４つの側面及び底面１貫通孔の内面に導体膜を形成す
る。The first filter and the second filter shown in the figure have through holes 11 to 14 and 21 to 23 with a depth of λ/4 provided at predetermined intervals in rectangular parallelepiped dielectric blocks 1 and 2, except for the top surface A. A conductive film is formed on the four side surfaces and the inner surface of the bottom surface 1 through-hole.
そこで、これらの貫通孔はλ／４共振器（以下誘電体共
振素子と云う）として動作すると共に、相隣る誘電体共
振素子は定められた結合度で結合する。又、この第１．
第２のフィルタと外部回路とを接続する為の結合手段と
しては、誘電体共振素子ＩＬ １４．２１．２３に挿入
・固定され一端が誘電体ブロックより突出した金属棒１
１１の一端に平行平板のチップコンデンサ（以下コンデ
ンサと省略する）１１２．１４２．２１２．２３２をハ
ンダ付は等で固定した容量結合のものと、第４図に示す
様に誘電体共振素子と別の貫通孔（内側に導体膜を形成
せず）に定められた長さの金属棒の一部を挿入したもの
などがある。Therefore, these through holes operate as λ/4 resonators (hereinafter referred to as dielectric resonant elements), and adjacent dielectric resonant elements are coupled with each other at a predetermined degree of coupling. Also, this first.
As a coupling means for connecting the second filter and an external circuit, a metal rod 1 is inserted and fixed in the dielectric resonant element IL 14.21.23 and has one end protruding from the dielectric block.
A capacitive coupling type in which a parallel plate chip capacitor (hereinafter abbreviated as a capacitor) 112, 142, 212, 232 is fixed to one end of 11 with soldering, etc., and a dielectric resonant element and a separate type as shown in Fig. 4. There is one in which a part of a metal rod of a specified length is inserted into a through hole (without a conductor film formed inside).
次にこの様に構成された同軸形誘電体フィルタを結合し
て分波器としての機能を持たせる為の調整は下記の様に
行う。Next, adjustment for coupling the coaxial dielectric filters configured in this way to provide a function as a duplexer is performed as follows.
■ 第１のフィルタ及び第２のフィルタ単体として要求
されている特性を満足する様に導体膜をトリミングして
各誘電体共振素子の共振周波数を所定の周波数にすると
共に、コンデンサの容量値を調整して所定の結合度にす
る。■ Trimming the conductive film to set the resonant frequency of each dielectric resonant element to a predetermined frequency and adjusting the capacitance value of the capacitor so as to satisfy the characteristics required for the first filter and the second filter alone. to obtain a predetermined degree of connectivity.
■ この２つのフィルタを結合する為の線路の長さは１
．＋、Ｌ２．に予め定められているので、所定、の位置
にこのフィルタを配置・固定して上記の線路で接続する
。■ The length of the line to connect these two filters is 1
．． +, L2. Since this filter is predetermined, the filter is placed and fixed at a predetermined position and connected with the above line.
そこで、例えば端子■より人力した信号は第１のフィル
タを通って端子■より出力され、又端子■から入力した
信号は第２のフィルタを通って端子■より出力される。Therefore, for example, a signal input manually from terminal (2) passes through a first filter and is output from terminal (2), and a signal input from terminal (2) passes through a second filter and is output from terminal (2).
第５図は結合手段の等価回路を示すが、第３図の誘電体
共振素子１４．２１及びこの素子に設けられたコンデン
サ１４２．２１２が第５図の単同調回路１４−２１及び
コンデンサ１４２′、 ２１２で示されている。FIG. 5 shows an equivalent circuit of the coupling means, in which the dielectric resonant element 14.21 of FIG. , 212.
今、第１のフィルタの動作中心周波数「！、第２のフィ
ルタの動作中心周波数ｆ２とすると、結合点Ｂより周波
数ｆ１又はｆ２で第２のフィルタ側又は第１のフィルタ
側をみた時、これらのフィルタが相手のフィルタに影響
を与えない様に高インピーダンスになる様な電気長θＣ
及びθ２にしなければならない。Now, if the operating center frequency of the first filter is ``!, and the operating center frequency of the second filter is f2, when looking at the second filter side or the first filter side from the connection point B at frequency f1 or f2, these The electrical length θC is such that the filter has high impedance so as not to affect the other filter.
and θ2.
しかし、動作周波数がＩ ＧＨｚ程度になると線路長が
１１変化しても、又は線路の配線径路によっても電気長
が変化するのでθｆ及びθ２を所定の値にする為の調整
工数がかかると云う問題点がある。However, when the operating frequency becomes around I GHz, the electrical length changes even if the line length changes by 11 or depending on the wiring route of the line, so there is a problem that it takes many man-hours to adjust θf and θ2 to predetermined values. There is a point.
上記の問題点は第１図に示す様に、第１の誘電体共振素
子を逐次結合した第１の誘電体共振素子部３と、該第１
の誘電体共振素子と異なる共振周波数を有する第２の誘
電体共振素子４と、該第１の誘電体共振素子部のうち一
端の第１の誘電体共振素子３３と該第２の誘電体共振素
子４とを結合する第１の結合手段５とを一つの誘電体ブ
ロック内に形成し、該誘電体ブロック内の該第１の誘電
体共振部の内の他端の第１の誘電体共振素子３１及び第
２の誘電体共振素子４に第２及び第３の結合手段３１２
．４２を介して別の回路及び別の誘電体ブロックの第２
の誘電体共振素子６を結合した分波器により解決される
。As shown in FIG.
a second dielectric resonant element 4 having a different resonance frequency from that of the dielectric resonant element; a first dielectric resonant element 33 at one end of the first dielectric resonant element section; A first coupling means 5 for coupling the element 4 is formed in one dielectric block, and a first dielectric resonance at the other end of the first dielectric resonance part in the dielectric block is formed. Second and third coupling means 312 are connected to the element 31 and the second dielectric resonant element 4.
．． 42 of another circuit and another dielectric block.
This problem can be solved by a duplexer coupled with dielectric resonant elements 6.
本発明は、第１の誘電体共振素子を逐次結合した第１の
誘電体共振素子部３と、第１の誘電体共振素子と異なる
共振周波数を持つ第２の誘電体共振素子４と、該第１の
誘電体共振素子部のうちの一端の第１の誘電体共振素子
３３と第２の誘電体共振素子４とを結合する第１の結合
手段５とを１つの誘電体ブロックの中に設け、第１の誘
電体共振素子部のうちの他端の第１の誘電体共振素子３
１及び第２の誘電体共振素子４に第２及び第３の結合手
段３１２．４２を介して別の回路及び別の第２の誘電体
共振素子８．９を結合して分波器を構成する様にした。The present invention includes a first dielectric resonant element section 3 in which first dielectric resonant elements are sequentially coupled, a second dielectric resonant element 4 having a different resonance frequency from the first dielectric resonant element, and A first coupling means 5 for coupling the first dielectric resonance element 33 at one end of the first dielectric resonance element section and the second dielectric resonance element 4 is provided in one dielectric block. a first dielectric resonant element 3 at the other end of the first dielectric resonant element section;
A duplexer is configured by coupling another circuit and another second dielectric resonance element 8.9 to the first and second dielectric resonance elements 4 via second and third coupling means 312.42. I tried to do it.
即ち、異なる共振周波数を有する第１の誘電体共振素子
３３及び第２の誘電体共振素子４と第１の結合手段５と
を一体化したのでこれらの間の寸法精度は従来に比較し
て向上し、且つ配線の為のハンダ付けする個所もないの
で所定のめ、θ２に近い値となりこの部分の調整工数が
削減される。That is, since the first dielectric resonant element 33 and the second dielectric resonant element 4, which have different resonant frequencies, and the first coupling means 5 are integrated, the dimensional accuracy between them is improved compared to the conventional method. In addition, since there is no soldering part for wiring, the value is close to θ2 for a predetermined value, and the number of adjustment steps for this part is reduced.
第２図は本発明の実施例の構成図を示す。 FIG. 2 shows a block diagram of an embodiment of the present invention.
以下、動作中心周波数がｆｌ、 ｆｌの２つのフィル
タを結合した場合を例にして動作を説明するが、企図を
通じて同一記号は同一対象物を示す。The operation will be described below using an example in which two filters with operation center frequencies fl and fl are combined, and the same symbols represent the same objects throughout the invention.
図において、結合手段３１２．４２１．４２２．７２及
び結合手段５は前記の容量結合及び金属棒を用いた結合
になっている。In the figure, the coupling means 312, 421, 422, 72 and the coupling means 5 are coupled using the aforementioned capacitive coupling and metal rod.
先ず、端子■よりの周波数ｆ１の入力信号はコンデンサ
３１２．誘電体共振素子３１．３２．３３及び結合手段
５を介して端子■より出力される。一方、端子■より結
合手段５に入力した周波数１２の信号は誘電体共振素子
４．コンデンサ４２１．４２２．誘電体共振素子６，７
．コンデンサ７２を介して端子■より外部に出力される
。First, the input signal of frequency f1 from terminal ■ is connected to capacitor 312. The signal is output from the terminal (2) via the dielectric resonant elements 31, 32, 33 and the coupling means 5. On the other hand, a signal with a frequency of 12 inputted to the coupling means 5 from the terminal 4 is transmitted to the dielectric resonant element 4. Capacitor 421.422. Dielectric resonant elements 6, 7
．． It is output to the outside via the capacitor 72 from the terminal ■.
ここで、誘電体共振素子３３と４とは共振周波数がｆ、
、 ｆｌと異なっているので、前記の様に互いに影響
を与えない様な距離θ１．θ２を設計時に求めておくが
、この距離は誘電体共振素子３３及び４と結合手段５と
の間の距離り、、Ｄｚ、結合手段５の直径及びこの中に
挿入される金属棒５１の長さ等に関係する。Here, the resonance frequencies of the dielectric resonant elements 33 and 4 are f,
, fl are different from each other, so the distance θ1 . θ2 is determined at the time of design, and this distance is determined by the distance between the dielectric resonant elements 33 and 4 and the coupling means 5, Dz, the diameter of the coupling means 5, and the length of the metal rod 51 inserted therein. It relates to magnificence.
そこで、この部分を含めて一体化して製造することによ
り予め求めた距離をほぼ満足し、配線の径路や誘電体共
振素子の位置による電気長の変化の問題はなくなり、金
属棒５１による結合度の調整等となり調整工数が削減さ
れる。Therefore, by integrating and manufacturing this part, the predetermined distance is almost satisfied, the problem of electrical length change due to the wiring route or the position of the dielectric resonant element is eliminated, and the degree of coupling due to the metal rod 51 is reduced. adjustment, etc., and the number of adjustment man-hours is reduced.
尚、誘電体共振素子４，６間の結合はコンデンサ４２１
と４２２を介して行われるが、共振周波数が同一の為に
単に結合度、即ち容量値を選択して所定の結合度が得ら
れる様にすればよい。Incidentally, the coupling between the dielectric resonant elements 4 and 6 is provided by a capacitor 421.
422, but since the resonance frequencies are the same, it is sufficient to simply select the coupling degree, that is, the capacitance value, to obtain a predetermined coupling degree.
又、上記の説明は２つのフィルタを接続する場合である
が、第１の誘電体共振素子３３の右側の構成と同様の構
成を、別の周波数に関して第１の誘電体共振素子３１の
左側に更に設けることにより３つの周波数に対しても同
様に分波動作をする。Furthermore, although the above explanation is for the case where two filters are connected, a configuration similar to the configuration on the right side of the first dielectric resonant element 33 may be applied to the left side of the first dielectric resonant element 31 for a different frequency. By further providing the same, the demultiplexing operation can be performed for three frequencies as well.
以上詳細に説明した様に本発明によれば、結合部の調整
工数が削減されると云う効果がある。As described in detail above, according to the present invention, there is an effect that the number of man-hours for adjusting the joint portion is reduced.
第１図は本発明の原理構成図、
第２図は本発明の実施例の構成図、
第３図は従来例の構成図、
図において、
３は第１の誘電体共振素子部、
４は第２の誘電体共振素子、
５は第１の結合手段、
６は別の第２の誘電体共振素子、
４２は第３の結合手段、
３１２は第２の結合手段を示す。
Δら１のフイ）し夕 茅２のフイ）Ｌり
燭ζ ５ ト４FIG. 1 is a diagram showing the principle of the present invention, FIG. 2 is a diagram showing the construction of an embodiment of the invention, and FIG. 3 is a diagram showing the construction of a conventional example. a second dielectric resonant element; 5 is a first coupling means; 6 is another second dielectric resonant element; 42 is a third coupling means; 312 is a second coupling means. Δra1 no hu) Shiyu Kaya 2 no hu) L candle ζ 5 to 4
Claims (1)
素子部（３）と、該第１の誘電体共振素子と異なる共振
周波数を有する第２の誘電体共振素子（４）と、該第１
の誘電体共振素子部のうち一端の第１の誘電体共振素子
（３３）と該第２の誘電体共振素子（４）とを結合する
第１の結合手段（５）とを一つの誘電体ブロック内に形
成し、 該誘電体ブロック内の該第１の誘電体共振部の内の他端
の第１の誘電体共振素子（３１）及び第２の誘電体共振
素子（４）に第２及び第３の結合手段（３１２、４２）
を介して別の回路及び別の誘電体ブロックの別の第２の
誘電体共振素子（６）を結合して構成したことを特徴と
する分波器。[Claims] When configuring a duplexer by combining dielectric filters, a first dielectric resonant element section (3) in which first dielectric resonant elements are successively combined; a second dielectric resonant element (4) having a different resonant frequency from that of the dielectric resonant element;
A first coupling means (5) for coupling the first dielectric resonance element (33) at one end of the dielectric resonance element section and the second dielectric resonance element (4) into one dielectric body. a second dielectric resonance element (31) and a second dielectric resonance element (4) at the other end of the first dielectric resonance section in the dielectric block; and third coupling means (312, 42)
1. A duplexer characterized in that it is configured by coupling another circuit and another second dielectric resonant element (6) of another dielectric block via.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6129086A JPS62217701A (en) | 1986-03-19 | 1986-03-19 | Branching filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6129086A JPS62217701A (en) | 1986-03-19 | 1986-03-19 | Branching filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62217701A true JPS62217701A (en) | 1987-09-25 |
Family
ID=13166916
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6129086A Pending JPS62217701A (en) | 1986-03-19 | 1986-03-19 | Branching filter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62217701A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6460005A (en) * | 1987-08-31 | 1989-03-07 | Oki Electric Ind Co Ltd | Branching filter |
| US5015973A (en) * | 1987-08-31 | 1991-05-14 | Oki Electric Industry Co., Ltd. | Duplexer with an isolating circuit on a dielectric plate |
| US5686873A (en) * | 1993-11-18 | 1997-11-11 | Murata Manufacturing Co., Ltd. | Antenna duplexer having transmit and receive portion formed in a single dielectric block |
| US6008707A (en) * | 1993-11-18 | 1999-12-28 | Murata Manufacturing Co., Ltd. | Antenna duplexer |
-
1986
- 1986-03-19 JP JP6129086A patent/JPS62217701A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6460005A (en) * | 1987-08-31 | 1989-03-07 | Oki Electric Ind Co Ltd | Branching filter |
| US5015973A (en) * | 1987-08-31 | 1991-05-14 | Oki Electric Industry Co., Ltd. | Duplexer with an isolating circuit on a dielectric plate |
| US5686873A (en) * | 1993-11-18 | 1997-11-11 | Murata Manufacturing Co., Ltd. | Antenna duplexer having transmit and receive portion formed in a single dielectric block |
| US6008707A (en) * | 1993-11-18 | 1999-12-28 | Murata Manufacturing Co., Ltd. | Antenna duplexer |
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