JPH02104002A - Microwave multiplexer - Google Patents
Microwave multiplexerInfo
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- JPH02104002A JPH02104002A JP25482588A JP25482588A JPH02104002A JP H02104002 A JPH02104002 A JP H02104002A JP 25482588 A JP25482588 A JP 25482588A JP 25482588 A JP25482588 A JP 25482588A JP H02104002 A JPH02104002 A JP H02104002A
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Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は周波数の異なる複数のマイクロ波信号を、各周
波数の信号に分離するマイクロ波分波器に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a microwave demultiplexer that separates a plurality of microwave signals of different frequencies into signals of each frequency.
（従来の技術）
一般に異なる周波数を有する複数のマイクロ波が、意識
的、あるいは必然的（基本波に対する高調波成分）に一
つの信号伝送路上を流れることが多々ある。(Prior Art) Generally, a plurality of microwaves having different frequencies often flow intentionally or necessarily (harmonic components relative to the fundamental wave) on one signal transmission path.
そして、それら複数のマイクロ波を所定の分岐路へ導く
ためにマイクロ波回路中に分波器を配置し、各マイクロ
波を分離するようになっている。In order to guide the plurality of microwaves to a predetermined branch path, a splitter is placed in the microwave circuit to separate each microwave.
そこで、従来は上記分波器を構成するものとして種々の
形状からなる導波管や、立体回路等を用いており、その
立体回路等の分波器と通常の信号伝送用のマイクロ波回
路とをコネクタ等を介して接続するようにしていた。Therefore, conventionally, waveguides of various shapes, three-dimensional circuits, etc. have been used to constitute the above-mentioned duplexer, and the duplexer such as the three-dimensional circuit and the ordinary microwave circuit for signal transmission have been used. were connected via connectors, etc.
（発明が解決しようとする課題）
しかしながら、上記した従来のマイクロ波分波器とＭＩ
Ｃ回路とを接続する場合には、ＭＩＣ回路の伝送路であ
るマイクロストリップ線路と立体回路の伝送路とでは伝
送モードが異なる為にマイクロ波分波器とＭＩＣ回路を
接続するのにモード変換器及びコネクタが必要となる。(Problem to be solved by the invention) However, the conventional microwave demultiplexer and MI
When connecting the C circuit, the transmission mode is different between the microstrip line, which is the transmission line of the MIC circuit, and the transmission line of the three-dimensional circuit, so a mode converter is required to connect the microwave demultiplexer and the MIC circuit. and connectors are required.
また場合によってはＭＩＣ回路をケースで囲む必要が生
じることもある。In some cases, it may be necessary to surround the MIC circuit with a case.
従って従来のマイクロ波分波器を用いると、マイクロ波
回路の構成が複雑化し、マイクロ波信号の変換損失が増
大すると共にコスト高になるという問題があった。Therefore, when a conventional microwave branching filter is used, the structure of the microwave circuit becomes complicated, the conversion loss of the microwave signal increases, and the cost increases.
本発明はこのような事情に鑑みてなされたものであり、
構成が簡単でかつ変換損失を低減できると共に、コスト
の低減を図ったマイクロ波分波器を提供することを目的
とするものである。The present invention was made in view of these circumstances, and
It is an object of the present invention to provide a microwave duplexer that has a simple configuration, can reduce conversion loss, and can reduce costs.
（課題を解決するための手段）
本発明は上記目的を達成するために、周波数の異なる複
数のマイクロ波記号を各周波数の信号に分離するマイク
ロ波分波器に置いて、前記複数のマイクロ波信号が伝送
される信号伝送路の途中から分離する信号数に応じた数
の分岐路を形成し、かつ前記信号伝送路から派生する各
分岐路の分岐点からその開放端に至るまでの距離が伝送
すべき信号のみを通過させるような長さとなる終端開放
スタブを各分岐路に設けると共に、前記複数のマイクロ
波信号の入力端から分離された各周波数のマイクロ波信
号の出力端に至る伝送路及び前記終端開放スタブをマイ
クロストリップ線路で形成したことを特徴とするもので
ある。(Means for Solving the Problems) In order to achieve the above object, the present invention is provided in a microwave demultiplexer that separates a plurality of microwave symbols with different frequencies into signals of each frequency, Forming a number of branch paths corresponding to the number of signals to be separated from the middle of a signal transmission path where signals are transmitted, and the distance from the branch point of each branch path derived from the signal transmission path to its open end is An open-ended stub with a length that allows only the signal to be transmitted to pass through is provided in each branch, and a transmission line leading from the input end of the plurality of microwave signals to the output end of the separated microwave signals of each frequency. and the open-ended stub is formed of a microstrip line.
（作 用）
本発明に係るマイクロ波分波器では周波数の異なる複数
のマイクロ波信号がその分離すべき信号数に応じた数の
分岐路を有するマイクロストリップ線路で形成された信
号伝送路に入力される。各分岐路にはそれぞれ特定の周
波数の信号のみを通過させるように分岐点からその開放
端に至るまでの距離が定められた終端開放スタブが設け
られている。(Function) In the microwave demultiplexer according to the present invention, a plurality of microwave signals having different frequencies are input to a signal transmission path formed by a microstrip line having a number of branch paths corresponding to the number of signals to be separated. be done. Each branch is provided with an open-ended stub whose distance from the branch point to its open end is determined so as to allow only signals of a specific frequency to pass through.
従って、周波数の異なる複数のマイクロ波信号は各分岐
路において各周波数の信号に分離される。Therefore, a plurality of microwave signals having different frequencies are separated into signals of each frequency at each branch path.
本発明によればマイクロストリップ線路でマイクロ波分
波器を構成したので、他のマイクロ波回路と同一基板上
に実装でき、構成が簡単となる。According to the present invention, since the microwave branching filter is configured with a microstrip line, it can be mounted on the same board as other microwave circuits, and the configuration becomes simple.
それ故コストの低減が図れ、また、マイクロ波分波器に
立体回路を使用しないので変換損失の低減が図れる。Therefore, costs can be reduced, and since no three-dimensional circuit is used in the microwave branching filter, conversion loss can be reduced.
（実 施 例）
以下、本発明の実施例を図面を参照して説明する。第１
図には本発明に係るマイクロ波分波器の一実施例の構成
が示されている。同図においてマイクロ波分波器１０は
複数の周波数のマイクロ波信号（本実施例では周波数ｆ
。、２ｆ０の二つのマイクロ波信号）が入力される信号
伝送路２０と、この信号伝送路２０から派生する第１の
分岐路２２と、信号伝送路２０から派生する第２の分岐
路２４と、第１の分岐路に設けられた終端開放スタブ２
２ａと、第２の分岐路２４に設けられた終端開放スタブ
２４ａとから構成されている。そして、これらの信号伝
送路２０、第１．第２の分岐路２２．２４．終端開放ス
タブ２２ａ、２４ａはマイクロストリップ線路により基
板１２上に形成されている。(Embodiments) Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1st
The figure shows the configuration of an embodiment of a microwave demultiplexer according to the present invention. In the figure, a microwave branching filter 10 is configured to receive microwave signals of multiple frequencies (in this embodiment, frequency f
. , 2f0) is inputted, a first branching path 22 derived from this signal transmission path 20, and a second branching path 24 derived from the signal transmission path 20, End open stub 2 provided in the first branch path
2a, and an open end stub 24a provided in the second branch path 24. These signal transmission paths 20, the first . Second branch 22.24. The open-ended stubs 22a and 24a are formed on the substrate 12 by microstrip lines.
ここで第１．第２の分岐路２２．２４は直交するように
形成されているが、これは基板上のパターンのレイアウ
ト上の問題であり、発明の本質とは無関係である。ただ
し、各分岐路に分離して伝送するマイクロ波信号の周波
数との関係で分岐点３０．３１から各分岐路２２．２４
に設けられた終端開放スタブ２２ａ、２４ａの開放端ま
での距離が特定の長さ即ち、伝送すべき信号のみを通過
させる長さに設定させる必要がある。Here's the first one. Although the second branch paths 22 and 24 are formed to be perpendicular to each other, this is a problem with the layout of the pattern on the substrate and is not related to the essence of the invention. However, due to the frequency of the microwave signal that is transmitted separately to each branch, from branch point 30.31 to each branch 22.24.
It is necessary to set the distance to the open ends of the open-ended stubs 22a and 24a provided at the terminals to a specific length, that is, a length that allows only the signal to be transmitted to pass through.
本発明の分布定数回路では、受電端開放の場合に送電端
から受電端側を見た伝送路のインピーダンスＺｓｏが、
開放状態にある受電端からλ／４の距離毎にＺｓｏ＝０
（短絡） 、 ７． Ｓ □ｗｏｏ （開放） 、
Ｚ ｓ ｏｍＯ，Ｚ ｓ ｏ−ｏｏ−・−となるという
原理に基づいている。In the distributed constant circuit of the present invention, when the receiving end is open, the impedance Zso of the transmission path when looking from the transmitting end to the receiving end is
Zso = 0 for every distance of λ/4 from the receiving end in the open state
(short circuit), 7. S □woo (open),
It is based on the principle that Z s omO, Z s o-oo-.-.
そこで本実施例では周波数ｆ。、２ｆ０のマイクロ波信
号を信号伝送路２０に入力し、第１の分岐路２２から周
波数ｆ０のマイクロ波信号を、また第２の分岐路２４か
ら周波数２ｆｏのマイクロ波信号を分離して取出すよう
に分岐点３０．３１から終端開放スタブ２２ａ、２４ａ
の各開放端までの距離が定められている。即ち、終端開
放スタブ２２ａの長さを１１．終端開放スタブ２２ａの
第１の分岐路２２における取付点から分岐点３０までの
距離を１２１分岐点３１から終端開放スタブ２４ａの第
２の分岐路２４における取付点までの距離を１３、終端
開放スタブ２４ａの長さを１４とすると、周波数ｆ。（
例えば４ＧＨｚ）の信号に対してその波長をλとすると
１１−１２−λ／２．１３−１４−λ／４に設定される
。従って、周波数２ｆＯ（例えば８ＧＨｚ）の信号に対
しては＋１−１２−λ／４，１３纏１４−λ／８となる
。Therefore, in this embodiment, the frequency is f. , 2f0 are input to the signal transmission path 20, and the microwave signal of frequency f0 is separated from the first branching path 22, and the microwave signal of frequency 2fo is separated and extracted from the second branching path 24. from the branch point 30.31 to the open end stubs 22a, 24a.
The distance to each open end is determined. That is, the length of the open end stub 22a is set to 11. The distance from the attachment point of the open-end stub 22a in the first branch road 22 to the branch point 30 is 121, the distance from the branch point 31 to the attachment point of the open-end stub 24a in the second branch road 24 is 13, the open-end stub If the length of 24a is 14, the frequency is f. (
For example, if the wavelength of a signal (4 GHz) is λ, it is set to 11-12-λ/2.13-14-λ/4. Therefore, for a signal with a frequency of 2fO (for example, 8 GHz), it becomes +1-12-λ/4, 13 times 14-λ/8.
次に本実施例に係るマイクロ波分波器の動作を第２図及
び第３図を参照にして説明する。第２図は周波数ｆ。の
マイクロ波信号に対する信号伝送路２０及び第１．第２
の分岐路２２．２４の状態を示している。すなわち、周
波数ｆ０のマイクロ波信号に対しては信号伝送路２０側
から各分岐路２４．２２を見た場合、終端開放スタブ２
４ａ。Next, the operation of the microwave duplexer according to this embodiment will be explained with reference to FIGS. 2 and 3. Figure 2 shows the frequency f. The signal transmission line 20 for the microwave signal of the first . Second
The state of branch roads 22 and 24 is shown. That is, for a microwave signal of frequency f0, when looking at each branch path 24 and 22 from the signal transmission path 20 side, the terminal open stub 2
4a.
２２ａの開放端からλ／２の距離となる分岐点３１並び
に終端開放スタブ２２ａの取付点でそれぞれ、開放状態
となる。従って、周波数ｆ。の信号は信号伝送路２０．
第１の分岐路２２のみを経て出力されることとなる。The branch point 31, which is a distance of λ/2 from the open end of the stub 22a, and the attachment point of the open end stub 22a are respectively in an open state. Therefore, the frequency f. The signal is transmitted through the signal transmission path 20.
It will be output via only the first branch path 22.
なお、第２図及び第３図において図中“０”は開放状態
を、“Ｓ”は短絡状態それぞれ示している。In FIGS. 2 and 3, "0" indicates an open state, and "S" indicates a short circuit state.
次に、周波数２ｆｏのマイクロ波信号に対して信号伝送
路２０及び第１．第２の分岐路２２．２４は、第３図に
示す状態となる。すなわち、第２の分岐路２４に設けら
れた終端開放スタブの開放端からλ／４の距離に分岐点
３１が存在することとなるから、周波数２ｆ、のマイク
ロ波信号については信号伝送路２０と第２の分岐路２４
とは短絡状態となる。Next, the signal transmission line 20 and the first . The second branch path 22,24 is in the state shown in FIG. That is, since the branch point 31 exists at a distance of λ/4 from the open end of the open-ended stub provided in the second branch path 24, the microwave signal of frequency 2f is connected to the signal transmission path 20. Second branch road 24
This will result in a short circuit.
一方、第１の分岐路２２に設けられた終端開放スタブ２
２ａの開放端から分岐点３０までの距離がλ／４となる
ので分岐点３０は開放状態となる。On the other hand, the terminal open stub 2 provided in the first branch path 22
Since the distance from the open end of 2a to the branch point 30 is λ/4, the branch point 30 is in an open state.
従って、周波数２ｆ、のマイクロ波信号は信号伝送路２
０及び第２の分岐路２４のみを経て出力されることにな
る。Therefore, the microwave signal with a frequency of 2f is transmitted through the signal transmission line 2.
0 and the second branch path 24.
以上から周波数ｆ。、２ｆｏのマイクロ波信号は、信号
伝送路２０に入力された後、第１の分岐路２２を介して
周波数ｆ。のマイクロ波信号が、第２の分岐路２４を介
して周波数２ｆＯのマイクロ波信号がそれぞれ分離され
て出力される。From the above, the frequency f. , 2fo are input to the signal transmission path 20 and then transmitted through the first branch path 22 to the frequency f. The microwave signals having a frequency of 2fO are separated and outputted via the second branch path 24.
このように本実施例では各分岐路２２．２４にそれぞれ
伝送すべきでないマイクロ波の信号の波長をλとすると
、信号伝送路２０から派生する各分岐路２２．２４の分
岐点３０．３１から終端開放スタブ２２ａ、２４ａの開
放端に至るまでの距離がｎλ／２（ｎは１以上の整数）
となるように設定されている。In this way, in this embodiment, if the wavelength of the microwave signal that should not be transmitted to each branch path 22.24 is λ, then from the branch point 30.31 of each branch path 22.24 derived from the signal transmission path 20, The distance to the open ends of the open-ended stubs 22a and 24a is nλ/2 (n is an integer of 1 or more)
It is set so that
なお、本実施例では、周波数ｆ。、２ｆｏの関係にある
マイクロ波信号を分離するマイクロ波分波器について説
明したが、本発明はこれに限定されることなく、他の周
波数の組合せであっていもよく、また分離すべき異なる
周波数の信号数も２つに限定されない。Note that in this embodiment, the frequency f. , 2fo has been described, but the present invention is not limited to this, and may be a combination of other frequencies, and may also be a combination of different frequencies to be separated. The number of signals is also not limited to two.
（発明の効果）
以上のように本発明では、周波数の異なる複数のマイク
ロ波信号が伝送される信号伝送路の中途から分離する信
号数に応じた数の分岐路を形成し、かつ前記信号伝送路
から派生する各分岐路の分岐点からその開放端に至るま
での距離が伝送すべき信号のみを通過させるような長さ
となる終端開放スタブを各分岐路に設けるとともに、前
記複数のマイクロ波信号の入力端から分離された各周波
数のマイクロ波信号の出力端に至る伝送路及び前記終端
開放スタブをマイクロストリップで形成したので、本発
明によれば構成が簡単でかつ変換損失を低減できるとと
もに、コストの低減を図ったマイクロ波分波器を実現で
きる。(Effects of the Invention) As described above, in the present invention, a number of branch paths are formed in accordance with the number of signals to be separated from the middle of a signal transmission path on which a plurality of microwave signals having different frequencies are transmitted, and Each branch is provided with an open-terminated stub having a length such that the distance from the branch point of each branch to the open end of the branch is such that only the signal to be transmitted passes through, and the plurality of microwave signals Since the transmission line from the input end to the output end of the separated microwave signals of each frequency and the open-ended stub are formed of microstrips, the present invention has a simple configuration and can reduce conversion loss. A microwave demultiplexer with reduced cost can be realized.
第１図は本発明に係るマイクロ波分波器の一実施例の構
成を示す説明図、第２図は第１図における周波数ｆ。の
マイクロ波信号に対する信号伝送路及び各分岐路の回路
状態を示す説明図、第３図は第１図における周波数２ｆ
ｏのマイクロ波信号に対する信号伝送路及び各分岐路の
回路状態を示す説明図である。
１０・・・マイクロ波分波器 １２・・・基 板２０・
・・信号伝送路 ２２．２４・・・分岐路２２ａ、
２４ａ・・・終端開放スタブFIG. 1 is an explanatory diagram showing the configuration of an embodiment of a microwave demultiplexer according to the present invention, and FIG. 2 shows the frequency f in FIG. 1. An explanatory diagram showing the circuit state of the signal transmission path and each branch path for the microwave signal of FIG.
FIG. 3 is an explanatory diagram showing the circuit state of the signal transmission path and each branch path for the microwave signal of FIG. 10... Microwave splitter 12... Board 20.
...Signal transmission path 22.24... Branch path 22a,
24a...Terminal open stub
Claims (2)
の信号に分離するマイクロ波分波器において、前記複数
のマイクロ波信号が伝送される信号伝送路の途中から分
離する信号数に応じた数の分岐路を形成し、かつ前記信
号伝送路から派生する各分岐路の分岐点からその開放端
に至るまでの距離が伝送すべき信号のみを通過させるよ
うな長さとなる終端開放スタブを各分岐路に設けると共
に、前記複数のマイクロ波信号の入力端から分離された
各周波数のマイクロ波信号の出力端に至る伝送路及び前
記終端開放スタブをマイクロストリップ線路で形成した
ことを特徴とするマイクロ波分波器。(1) In a microwave demultiplexer that separates multiple microwave signals with different frequencies into signals of each frequency, the number corresponds to the number of signals to be separated from the middle of the signal transmission path through which the multiple microwave signals are transmitted. An open-ended stub is attached to each branch to form a branch path, and the distance from the branch point to the open end of each branch path derived from the signal transmission path is such that only the signal to be transmitted passes through. The microwave is characterized in that the transmission line and the open terminal stub are formed of a microstrip line, and the transmission line extends from the input end of the plurality of microwave signals to the output end of the separated microwave signals of each frequency. Duplexer.
ｆ＿０の二つのマイクロ波信号であり、前記信号伝送路
から派生する各分岐路の分岐点から終端開放スタブの開
放端に至るまでの距離が前記二つのマイクロ波信号のう
ち各分岐路に伝送すべきでないマイクロ波信号の波長を
λとすると、ｎλ／２（ｎは１以上の整数）であること
を特徴とする請求項１に記載のマイクロ波分波器。(2) The plurality of microwave signals have frequencies f_0,2
f_0, and the distance from the branch point of each branch path derived from the signal transmission path to the open end of the open termination stub is the distance between the two microwave signals transmitted to each branch path of the two microwave signals. 2. The microwave demultiplexer according to claim 1, wherein λ is the wavelength of the microwave signal that should not be used, and nλ/2 (n is an integer of 1 or more).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25482588A JPH02104002A (en) | 1988-10-12 | 1988-10-12 | Microwave multiplexer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25482588A JPH02104002A (en) | 1988-10-12 | 1988-10-12 | Microwave multiplexer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02104002A true JPH02104002A (en) | 1990-04-17 |
Family
ID=17270389
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25482588A Pending JPH02104002A (en) | 1988-10-12 | 1988-10-12 | Microwave multiplexer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02104002A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH048505U (en) * | 1990-05-11 | 1992-01-27 | ||
| KR100352454B1 (en) * | 2000-05-03 | 2002-09-11 | 신화인터텍 주식회사 | Microwave devices utilizing photonic band gap theory |
| JP2005051499A (en) * | 2003-07-28 | 2005-02-24 | Nec Corp | Power distribution circuit and frequency multiplier |
| JP2013239901A (en) * | 2012-05-15 | 2013-11-28 | Ntt Docomo Inc | Dual band phase shifter and dual band phase shifter control method |
| CN105720333A (en) * | 2016-01-28 | 2016-06-29 | 华为技术有限公司 | Filter |
| CN107834135A (en) * | 2017-11-21 | 2018-03-23 | 华南理工大学 | A kind of plane triplexer based on minor matters loading structure |
| JP2019102886A (en) * | 2017-11-29 | 2019-06-24 | キヤノン株式会社 | Branch circuit |
| CN110994094A (en) * | 2019-12-03 | 2020-04-10 | 上海海事大学 | Differential three-passband filter for loading UIR based on T-branch node |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5352336A (en) * | 1976-10-22 | 1978-05-12 | Mitsubishi Electric Corp | Dividing filter |
-
1988
- 1988-10-12 JP JP25482588A patent/JPH02104002A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5352336A (en) * | 1976-10-22 | 1978-05-12 | Mitsubishi Electric Corp | Dividing filter |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH048505U (en) * | 1990-05-11 | 1992-01-27 | ||
| KR100352454B1 (en) * | 2000-05-03 | 2002-09-11 | 신화인터텍 주식회사 | Microwave devices utilizing photonic band gap theory |
| JP2005051499A (en) * | 2003-07-28 | 2005-02-24 | Nec Corp | Power distribution circuit and frequency multiplier |
| JP2013239901A (en) * | 2012-05-15 | 2013-11-28 | Ntt Docomo Inc | Dual band phase shifter and dual band phase shifter control method |
| CN105720333A (en) * | 2016-01-28 | 2016-06-29 | 华为技术有限公司 | Filter |
| CN107834135A (en) * | 2017-11-21 | 2018-03-23 | 华南理工大学 | A kind of plane triplexer based on minor matters loading structure |
| CN107834135B (en) * | 2017-11-21 | 2020-02-18 | 华南理工大学 | Planar triplexer based on branch knot loading structure |
| JP2019102886A (en) * | 2017-11-29 | 2019-06-24 | キヤノン株式会社 | Branch circuit |
| CN110994094A (en) * | 2019-12-03 | 2020-04-10 | 上海海事大学 | Differential three-passband filter for loading UIR based on T-branch node |
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