JPH0630402B2 - Duplexer - Google Patents
DuplexerInfo
- Publication number
- JPH0630402B2 JPH0630402B2 JP61025425A JP2542586A JPH0630402B2 JP H0630402 B2 JPH0630402 B2 JP H0630402B2 JP 61025425 A JP61025425 A JP 61025425A JP 2542586 A JP2542586 A JP 2542586A JP H0630402 B2 JPH0630402 B2 JP H0630402B2
- Authority
- JP
- Japan
- Prior art keywords
- waveguide
- resonator
- bandpass filter
- output
- input
- 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 - Fee Related
Links
Landscapes
- Control Of Motors That Do Not Use Commutators (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 この発明はマイクロ波帯及びミリ波帯で用いられる分波
器に関するもので、特に小形化と帯域通過フィルタの通
過特性の広帯域化に関する。Description: TECHNICAL FIELD The present invention relates to a demultiplexer used in a microwave band and a millimeter wave band, and more particularly to miniaturization and widening of bandpass characteristics of a bandpass filter.
第３図は、例えばＣＯＭＳＡＴ ＴＥＣＨＮＩＣＡＬ
ＲＥＶＩＥＷ Ｖｏｌ．６，Ｎｏ２，ｐｐ．２８５−３
０６（１９７６）に示された従来の分波器を示す斜視図
であり、第４図は第３図のＢ−Ｂ断面図である。FIG. 3 shows, for example, COMSAT TECHNICAL
REVIEW Vol. 6, No 2, pp. 285-3
06 (1976) is a perspective view showing a conventional duplexer, and FIG. 4 is a sectional view taken along line BB in FIG.
図において、（１）は分波器の入力導波管である主導波
管、（２ａ），（２ｂ）は分岐導波管の出力端にある出
力導波管、（４）は主導波管（１）の短絡面、（５ａ）
〜（５ｈ）は空胴共振器、（６ａ）〜（６ｈ）は隣接す
る空胴共振器間の結合量、及び最終段空胴共振器と出力
導波管との結合量を調整するアイリス、（７ａ），（７
ｂ）は入力導波管である主導波管と初段空胴共振器との
結合量を調整する結合孔（又はアイリス）、（８），
（９）は帯域通過フィルタであり、それぞれ４つの空胴
共振器（５ａ）〜（５ｄ），（５ｅ）〜（５ｈ）と、ア
イリス（６ａ）〜（６ｈ）と、結合孔（又はアイリス）
（７ａ），（７ｂ）とで構成される。In the figure, (1) is the main waveguide that is the input waveguide of the demultiplexer, (2a) and (2b) are the output waveguides at the output end of the branch waveguide, and (4) is the main waveguide. Short-circuited surface of (1), (5a)
~ (5h) is a cavity resonator, (6a) ~ (6h) is an iris for adjusting the coupling amount between adjacent cavity resonators, and the coupling amount between the final stage cavity resonator and the output waveguide, (7a), (7
b) is a coupling hole (or iris) for adjusting the coupling amount between the main waveguide which is the input waveguide and the first stage cavity resonator, (8),
Reference numeral (9) is a bandpass filter, which has four cavity resonators (5a) to (5d), (5e) to (5h), irises (6a) to (6h), and a coupling hole (or iris).
(7a) and (7b).
主導波管（１）は一端が短絡面（４）により短絡されて
いる。One end of the main waveguide (1) is short-circuited by the short-circuit surface (4).
帯域通過フィルタ（８），（９）は主導波管（１）の短
絡面（４）からそれぞれ管内波長の約1/2の整数倍の距
離Ｌ１及びＬ２の位置に接続されている。The band pass filters (8) and (9) are connected to the main waveguide (1) at distances L 1 and L 2 from the short-circuit surface (4) which are integral multiples of about 1/2 of the guide wavelength.
次に動作について説明する。Next, the operation will be described.
帯域通過フィルタ（８），（９）は中心周波数がそれぞ
れ１及び２に調整されているものとする。主導波管
（１）に入射した周波数１及び２の電波は短絡面
（４）からそれぞれ距離Ｌ１及びＬ２の位置で管軸方向
の電流が最大となり、帯域通過フィルタ（８），（９）
と結合孔（７ａ），（７ｂ）を介して強く結合し、出力
導波管（２ａ）及び（２ｂ）に分岐される。１ 及び２以外の周波数の電波は帯域通過フィルタ
（８），（９）により反射されるため出力導波管（２
ａ），（２ｂ）に取り出されず、主導波管（１）にもど
る。このように、この分波器は分岐導波管の数に等しい
周波数帯域の電波を分波することができる。The center frequencies of the band pass filters (8) and (9) are adjusted to 1 and 2 , respectively. The electric waves of frequencies 1 and 2 incident on the main waveguide (1) have the maximum current in the tube axis direction at the positions of distances L 1 and L 2 from the short-circuit surface (4), respectively, and the band pass filters (8), (9) )
Is strongly coupled via the coupling holes (7a) and (7b) and is branched into the output waveguides (2a) and (2b). Radio waves of frequencies other than 1 and 2 are reflected by the band pass filters (8) and (9), so that the output waveguide (2
It is not taken out to a) and (2b) but returned to the main waveguide (1). Thus, this demultiplexer can demultiplex radio waves in a frequency band equal to the number of branch waveguides.
従来の分波器の構成要素である帯域通過フィルタ
（８），（９）は第３図に示すように空胴共振器（５
ｄ），（５ｈ）を結合孔（７ａ），（７ｂ）を介して主
導波管（１）と結合しているため結合量が大きく、通過
帯域幅の広い帯域通過フィルタが得られるが、形状が大
きくなり、従って分波器としての形状も大きくなるとい
う課題があった。As shown in FIG. 3, the bandpass filters (8) and (9), which are constituent elements of the conventional duplexer, have a cavity resonator (5).
Since d) and (5h) are coupled to the main waveguide (1) through the coupling holes (7a) and (7b), the coupling amount is large and a bandpass filter having a wide passband can be obtained. However, there is a problem in that the shape of the duplexer also becomes large.
この発明は上記のような課題を解消するためになされた
もので、小形にするとともに、帯域通過フィルタの通過
特性を広帯域化した分波器を得ることを目的とする。The present invention has been made to solve the above problems, and an object thereof is to obtain a duplexer in which the bandpass filter has a wide band pass characteristic while being downsized.
この目的を達成するために、この発明に係わる分波器
は、主導波管に接続する複数個の分岐導波管に帯域通過
フィルタを有する分波器において、 上記帯域通過フィルタの遮断導波管内に誘電体共振器を
配置し、且つ上記帯域通過フィルタの入出力端に空胴共
振器を設け、入力端の空胴共振器の主導波管側、及び出
力端の空胴共振器の出力導波管側にのみ誘導性結合手段
を備えるようにしたものである。In order to achieve this object, a branching filter according to the present invention is a branching filter having a bandpass filter in a plurality of branch waveguides connected to a main waveguide, wherein the branching waveguide of the bandpass filter is provided. A dielectric resonator, and a cavity resonator at the input and output ends of the bandpass filter. The main resonator side of the cavity resonator at the input end and the output resonator of the cavity resonator at the output end. The inductive coupling means is provided only on the wave tube side.
以上のように構成されたこの発明の分波器では、帯域通
過フィルタの遮断導波管内に誘電体共振器を配置するこ
とにより、帯域通過フィルタを小形にできるとともに、
且つ、 帯域通過フィルタの入出力端に空胴共振器を設けたこと
により、主導波管と初段共振器間、初段共振器と次の誘
電体共振器間、最終段共振器と手前の誘電体共振器間、
最終段共振器と出力導波管間の各結合量を入出力端に近
いものほど強くすることができるため、帯域通過フィル
タの通過特性を従来と同様に広帯域化することができ
る。In the duplexer of the present invention configured as described above, by arranging the dielectric resonator in the cutoff waveguide of the bandpass filter, the bandpass filter can be downsized,
Moreover, by providing a cavity resonator at the input and output ends of the bandpass filter, the main waveguide and the first-stage resonator, the first-stage resonator and the next dielectric resonator, and the final-stage resonator and the front dielectric material are connected. Between the resonators,
Since the coupling amount between the final-stage resonator and the output waveguide can be made stronger as the coupling amount is closer to the input / output end, the bandpass characteristic of the bandpass filter can be broadened as in the conventional case.
以下、この発明の一実施例を図を参照して説明する。第
１図はこの発明の分波器の一実施例を示す斜視図であ
る。An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing an embodiment of the duplexer of the present invention.
図において、（１）は分波器の入力導波管である主導波
管、（２ａ），（２ｂ）は分岐導波管の出力端にある出
力導波管、（３ａ）〜（３ｄ）は誘電体共振器、（４）
は主導波管の短絡面、（５ａ），（５ｄ），（５ｅ），
（５ｈ）は空胴共振器、（６ａ），（６ｅ）はアイリ
ス、（７ａ），（７ｂ）は結合孔（又はアイリス）、
（８），（９）は帯域通過フィルタ、（１０ａ）（１０
ｂ）は遮断導波管である。In the figure, (1) is a main waveguide which is an input waveguide of a demultiplexer, (2a) and (2b) are output waveguides at output ends of branch waveguides, and (3a) to (3d) Is a dielectric resonator, (4)
Is a short-circuited surface of the main waveguide, (5a), (5d), (5e),
(5h) is a cavity resonator, (6a) and (6e) are iris, (7a) and (7b) are coupling holes (or iris),
(8) and (9) are band pass filters, and (10a) (10
b) is a cutoff waveguide.
第２図は第１図のＡ−Ａ断面図である。FIG. 2 is a sectional view taken along the line AA of FIG.
帯域通過フィルタ（８），（９）はそれぞれ遮断導波管
（１０ａ），（１０ｂ）の中に２個の誘電体共振器（３
ａ），（３ｂ）と（３ｅ），（３ｄ）とを配置し、上記
帯域通過フィルタの入出力端にそれぞれ空胴共振器（５
ａ），（５ｄ）と（５ｅ），（５ｈ）とを設け、且つ入
力端に設けた空胴共振器の主導波管側、及び出力端に設
けた空胴共振器の出力導波管側にのみ結合孔（又はアイ
リス）（７ａ），（７ｂ），（６ａ），（６ｅ）を備え
ている。The band pass filters (8) and (9) respectively include two dielectric resonators (3) in the cutoff waveguides (10a) and (10b).
a), (3b) and (3e), (3d) are arranged, and the cavity resonator (5) is provided at the input and output ends of the band pass filter.
a), (5d) and (5e), (5h) are provided, and the main waveguide side of the cavity resonator provided at the input end and the output waveguide side of the cavity resonator provided at the output end Only the coupling holes (or iris) (7a), (7b), (6a), and (6e) are provided in.
帯域通過フィルタ（８），（９）は中心周波数がそれぞ
れ１及び２に調整され、主導波管の短絡面（４）か
らそれぞれ管内波長の約1/2の整数倍の距離Ｌ１、及び
Ｌ２位置で主導波管（１）と接続されている。The center frequencies of the band-pass filters (8) and (9) are adjusted to 1 and 2 , respectively, and the distances L 1 and L from the short-circuit surface (4) of the main waveguide are integral multiples of about 1/2 of the guide wavelength, respectively. It is connected to the main waveguide (1) at two positions.
主導波管（１）に入射した周波数１及び２の電波は
それぞれ出力導波管（２ａ）及び（２ｂ）に分波され
る。１及び２以外の周波数の電波は帯域通過フィル
タ（８），（９）で反射されるため出力導波管（２
ａ），（２ｂ）に現れず主導波管（１）に反射される。Radio waves of frequencies 1 and 2 incident on the main waveguide (1) are demultiplexed into output waveguides (2a) and (2b), respectively. Radio waves of frequencies other than 1 and 2 are reflected by the band pass filters (8) and (9), so that the output waveguide (2
It does not appear in a) and (2b) and is reflected by the main waveguide (1).
この発明の分波器は帯域通過フィルタの入出力端にそれ
ぞれ空胴共振器（５ａ），（５ｄ）と（５ｅ），（５
ｈ）とを設け、帯域通過フィルタの遮断導波管（１０
ａ），（１０ｂ）中にそれぞれ２個の誘電体共振器（３
ａ），（３ｂ）と（３ｃ），（３ｄ）とを配置すること
により、帯域通過フィルタを全て空胴共振器（５ａ）〜
（５ｈ）で構成した従来の分波器よりも小形化され、 且つ、この発明の分波器を構成する帯域通過フィルタ
（８），（９）には、大きな結合量を必要とする初段及
び最終段の共振器として空胴共振器を設けることによ
り、主導波管（入力導波管）と初段共振器間、初段共振
器と次の誘電体共振器間、最終段共振器と手前の誘電体
共振器間、最終段共振器と出力導波管間の各結合量を入
出力端に近いものほど強くすることができ、帯域通過フ
ィルタの通過特性を従来と同様に通過帯域の比帯域幅が
１０％近い広帯域特性が得られる。The duplexer of the present invention has cavity resonators (5a), (5d), (5e), and (5) at the input and output ends of a bandpass filter, respectively.
h) is provided, and the cutoff waveguide (10
a) and (10b) each have two dielectric resonators (3
By arranging a), (3b), (3c), and (3d), all the bandpass filters are formed in the cavity resonators (5a) to (5a).
The bandpass filters (8) and (9) that are smaller than the conventional duplexer configured in (5h) and that configure the duplexer of the present invention require a large amount of coupling in the first stage and By providing a cavity resonator as the last-stage resonator, the main waveguide (input waveguide) and the first-stage resonator, the first-stage resonator and the next dielectric resonator, and the last-stage resonator and the front dielectric resonator The coupling amount between the body resonators and between the final-stage resonator and the output waveguide can be strengthened as the distance from the input / output end is increased, and the passband characteristics of the bandpass filter are the same as in the past. Of about 10% is obtained.
なお、この実施例では中心周波数がそれぞれ１及び
２の帯域通過フィルタをもつ分岐導波管がある場合につ
いて説明したが、これに限るものではない。In this embodiment, the center frequencies are 1 and
The case where there is a branch waveguide having a bandpass filter of 2 has been described, but the present invention is not limited to this.
また、この実施例では、１つの帯域通過フィルタが４段
の共振器をもつ場合について説明したが、これに限るも
のではない。Further, in this embodiment, the case where one band pass filter has four stages of resonators has been described, but the present invention is not limited to this.
以上のように、この発明によれば、帯域通過フィルタの
遮断導波管内に誘電体共振器を配置することにより、並
びに、 帯域通過フィルタの入出力端に空胴共振器を設けること
により、主導波管と初段共振器間、初段共振器と次の誘
電体共振器間、最終段共振器と手前の誘電体共振器間、
最終段共振器と出力導波管間の各結合量を入出力端に近
いものほど強くすることができ、 小形で、帯域通過フィルタの通過特性を従来と同様に広
帯域化した分波器を得ることができる。As described above, according to the present invention, by arranging the dielectric resonator in the cutoff waveguide of the bandpass filter and by providing the cavity resonator at the input / output end of the bandpass filter, Between the wave tube and the first-stage resonator, between the first-stage resonator and the next dielectric resonator, between the last-stage resonator and the front dielectric resonator,
The coupling amount between the final-stage resonator and the output waveguide can be strengthened as it gets closer to the input / output end, and a small-sized demultiplexer with the bandpass characteristics of the bandpass filter widened as in the past can be obtained. be able to.
第１図はこの発明の分波器の一実施例を示す斜視図、第
２図は第１図のＡ−Ａ断面図、第３図は従来の分波器を
示す斜視図、第４図は第３図のＢ−Ｂ断面図である。 図中、（１）は主導波管、（２ａ），（２ｂ）は出力導
波管、（３ａ）〜（３ｄ）は誘電体共振器、（４）は短
絡面、（５ａ）〜（５ｈ）は空胴共振器、（６ａ），
（６ｈ）はアイリス、（７ａ），（７ｂ）は結合孔（又
はアイリス）、（８），（９）は帯域通過フィルタ、
（１０ａ），（１０ｂ）は遮断導波管である。 なお、図中、同一符号は同一又は相当部分を示す。1 is a perspective view showing an embodiment of the duplexer of the present invention, FIG. 2 is a sectional view taken along the line AA of FIG. 1, FIG. 3 is a perspective view showing a conventional duplexer, and FIG. FIG. 4 is a sectional view taken along line BB in FIG. In the figure, (1) is a main waveguide, (2a) and (2b) are output waveguides, (3a) to (3d) are dielectric resonators, (4) is a short-circuit surface, and (5a) to (5h). ) Is a cavity resonator, (6a),
(6h) is an iris, (7a) and (7b) are coupling holes (or iris), (8) and (9) are bandpass filters,
(10a) and (10b) are cut-off waveguides. In the drawings, the same reference numerals indicate the same or corresponding parts.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 武田 文雄 神奈川県鎌倉市大船５丁目１番１号 三菱 電機株式会社情報電子研究所内 (56)参考文献 特開 昭60−261201（ＪＰ，Ａ) 特開 昭58−207701（ＪＰ，Ａ) 特開 昭48−101063（ＪＰ，Ａ) ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Fumio Takeda 5-1-1, Ofuna, Kamakura-shi, Kanagawa Mitsubishi Electric Corporation Information & Electronics Laboratory (56) Reference JP-A-60-261201 (JP, A) Kai 58-207701 (JP, A) JP-A 48-101063 (JP, A)
Claims (1)
帯域通過フィルタを有する分波器において、 上記帯域通過フィルタの遮断導波管内に誘電体共振器を
配置し、且つ上記帯域通過フィルタの入出力端に空胴共
振器を設け、入力端の空胴共振器の主導波管側、及び出
力端の空胴共振器の出力導波管側にのみ誘導性結合手段
を備えたことを特徴とする分波器。1. A demultiplexer having a bandpass filter in a plurality of branch waveguides connected to a main waveguide, wherein a dielectric resonator is disposed in a cutoff waveguide of the bandpass filter, and the bandpass filter is provided. A cavity resonator is provided at the input and output ends of the pass filter, and inductive coupling means is provided only on the main waveguide side of the cavity resonator at the input end and the output waveguide side of the cavity resonator at the output end. A duplexer characterized by that.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61025425A JPH0630402B2 (en) | 1986-02-07 | 1986-02-07 | Duplexer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61025425A JPH0630402B2 (en) | 1986-02-07 | 1986-02-07 | Duplexer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62183604A JPS62183604A (en) | 1987-08-12 |
| JPH0630402B2 true JPH0630402B2 (en) | 1994-04-20 |
Family
ID=12165607
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61025425A Expired - Fee Related JPH0630402B2 (en) | 1986-02-07 | 1986-02-07 | Duplexer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0630402B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2276040A (en) * | 1993-03-12 | 1994-09-14 | Matra Marconi Space Uk Ltd | Dielectric resonator demultiplexer |
| DE19632366A1 (en) * | 1996-08-10 | 1998-02-12 | Bosch Gmbh Robert | Microwave diplexer with main waveguide and bandpass filters |
| DE19927798A1 (en) * | 1999-06-18 | 2001-01-04 | Forschungszentrum Juelich Gmbh | The electrical resonator configuration for microwave multipole bandpass filters |
| JP4777073B2 (en) * | 2006-01-12 | 2011-09-21 | 積水樹脂株式会社 | Distribution rack equipment |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5435465B2 (en) * | 1972-03-31 | 1979-11-02 | ||
| JPS60261201A (en) * | 1984-06-08 | 1985-12-24 | Nec Corp | Microwave filter |
-
1986
- 1986-02-07 JP JP61025425A patent/JPH0630402B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62183604A (en) | 1987-08-12 |
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