JPH0438562Y2 - - Google Patents
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- Publication number
- JPH0438562Y2 JPH0438562Y2 JP1984094139U JP9413984U JPH0438562Y2 JP H0438562 Y2 JPH0438562 Y2 JP H0438562Y2 JP 1984094139 U JP1984094139 U JP 1984094139U JP 9413984 U JP9413984 U JP 9413984U JP H0438562 Y2 JPH0438562 Y2 JP H0438562Y2
- Authority
- JP
- Japan
- Prior art keywords
- terminal
- receiving
- reception
- connection terminal
- transmission
- 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.)
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- Control Of Motors That Do Not Use Commutators (AREA)
Description
【考案の詳細な説明】
考案の属する技術分野
本考案は送受共用アンテナ又は受信専用アンテ
ナを用い、送信波と受信波を分離する送受分波装
置に関する。[Detailed description of the invention] Technical field to which the invention pertains The present invention relates to a transmitting/receiving demultiplexing device that uses a transmitting/receiving antenna or a receiving antenna to separate transmitted waves and received waves.
従来技術の説明
従来、この種の送受分波装置は第１図に示す様
に、Ｙ形サーキユレータ（以下送受共用器DUP
と略記する）１２の１つの端子に送受共用アンテ
ナ１１が接続され、その接続端子１ａに対し順方
向端子２ａに受信用分波器系が、また逆方向端子
３ａに送信分波器系がそれぞれ接続される。即
ち、端子３ａにはＹ形サーキユレータ１３が接続
され、端子３ａの逆方向端子には送信周波T1に
同調された送信帯域ろ波器１５が、又、順方向端
子にはＹ形サーキユレータ１４がそれぞれ接続さ
れている。更に、Ｙ形サーキユレータ１４の一方
には送信周波T2に同調された送信帯域ろ波器１
６が、他方には無反射終端器がそれぞれ接続され
ている。Description of Prior Art Conventionally, this type of transmitting/receiving demultiplexing device has been constructed using a Y-shaped circulator (hereinafter referred to as a transmitting/receiving duplexer DUP), as shown in Fig. 1.
A transmitting/receiving antenna 11 is connected to one terminal of the terminal 12 (abbreviated as ), and a receiving duplexer system is connected to the forward terminal 2a of the connecting terminal 1a, and a transmitting duplexer system is connected to the reverse terminal 3a. Connected. That is, a Y-shaped circulator 13 is connected to the terminal 3a, a transmission bandpass filter 15 tuned to the transmission frequency T1 is connected to the reverse terminal of the terminal 3a, and a Y-shaped circulator 14 is connected to the forward terminal. each connected. Furthermore, one side of the Y-shaped circulator 14 is equipped with a transmission bandpass filter 1 tuned to the transmission frequency T2.
6 is connected to the other end, and a non-reflection terminator is connected to the other end.
受信系についても同様であり、端子２ａの順方
向端子には受信周波R2に同調された受信帯域ろ
波器２６が、逆方向端子にはＹ形サーキユレータ
２３がそれぞれ接続されている。又同様に、Ｙ形
サーキユレータ２３の一方には受信周波R1に同
調された受信帯域ろ波器２５が、他方には無反射
終端器がそれぞれ接続されている。 The same applies to the receiving system, and a receiving band filter 26 tuned to the receiving frequency R 2 is connected to the forward terminal of the terminal 2a, and a Y-shaped circulator 23 is connected to the reverse terminal. Similarly, a receiving band filter 25 tuned to the receiving frequency R1 is connected to one side of the Y-shaped circulator 23, and a non-reflection terminator is connected to the other side.
第２図は従来における受信分波装置の構成例を
示すブロツク図である。１１′は受信専用アンテ
ナ、２３，２４，２５′はＹ形サーキユレータ、
２６〜２８は受信帯域ろ波器である。 FIG. 2 is a block diagram showing an example of the configuration of a conventional receiving and demultiplexing device. 11' is a reception-only antenna, 23, 24, 25' are Y-shaped circulators,
26 to 28 are reception band filters.
かかる構成の送受分波装置又は受信分波装置は
比較的構成が簡単であり廉価であるために、一般
に広く採用されている。又、臨接周波数間隔Δ
＝｜T1−T2｜＝｜R1−R2｜、送受間干渉量及び
回路損失等については充分な配慮がされた上で１
５〜１６及び２５〜２６の帯域ろ波器が決定され
ていることは言うまでもない。 A transmitting/receiving demultiplexing device or a receiving demultiplexing device having such a configuration is generally widely adopted because it has a relatively simple configuration and is inexpensive. Also, the adjacent frequency interval Δ
＝｜T 1 −T 2 ｜=｜R 1 −R 2 ｜.
It goes without saying that bandpass filters of 5 to 16 and 25 to 26 have been determined.
しかしながらこの構成の分波器は以下に示す如
き欠点をもつためにシステムの増設時には既にサ
ービス中（in service）の回線については増設に
付帯する時間は断とせざるを得ない事態が生じ
る。以下これについて第１図を用いて説明を行
う。 However, the duplexer having this configuration has the following drawbacks, and therefore, when the system is expanded, lines that are already in service must be cut off for the time associated with the expansion. This will be explained below using FIG. 1.
第１図において、送受共用アンテナ１１から
R1の周波数の変調波が受信されたと想定する。
受信波R1は送受共用器DUP１２及びＹ形サーキ
ユレータ２４を順方向に通過して受信帯域ろ波器
２６の入力で全反射し、Ｙ形サーキユレータ２４
を順方向に通過してＹ形サーキユレータ２３を順
方向に通過し、帯域ろ波器２５に入力される。 In FIG. 1, from the transmitting/receiving antenna 11
Assume that a modulated wave with a frequency of R 1 is received.
The received wave R 1 passes through the duplexer DUP 12 and the Y-shaped circulator 24 in the forward direction, is totally reflected at the input of the receiving band filter 26, and then passes through the Y-shaped circulator 24.
The signal passes through the Y-shaped circulator 23 in the forward direction, and is input to the bandpass filter 25.
受信帯域ろ波器２５は受信周波R1に同調され
ている故に、入力された信号はこれを通過、端子
R1に出力されることとなる。しかしながら、受
信帯域ろ波器２６の出力端子が無反射終端の条件
が満足されない場合には、隣接周波数に該当する
周波数R1のナイキスト帯域内の振幅及び遅延周
波数特性に影響を与えることになり、極端な場
合、既施設回線（この場合R1周波数）が断とな
ることが予想され、かかる事態は極力避け得るこ
とが必要とされる。 Since the reception band filter 25 is tuned to the reception frequency R1 , the input signal passes through it and is output to the terminal.
It will be output to R1 . However, if the condition that the output terminal of the receiving band filter 26 is non-reflection terminated is not satisfied, the amplitude and delay frequency characteristics within the Nyquist band of the frequency R 1 corresponding to the adjacent frequency will be affected. In extreme cases, it is expected that the existing facility line ( R1 frequency in this case) will be disconnected, and it is necessary to avoid such a situation as much as possible.
第３図１，２は各々送信帯域ろ波器入力端子ある
いは受信帯域ろ波器の出力端子の整合条件を変え
たときの入力端子の反射振幅特性、反射遅延特性
を示す。図中、0は隣接帯域の周波数を当該端子
の周波数で規格化した規格化中心周波数、Δは
隣接帯域幅である。また、図中のパラメータ
「0dB180°」は整合条件が「開放、反射位相180°」
すなわち全反射の場合を示しており、「∞dB」は
「無反射終端」の場合を示している。3. FIGS. 1 and 2 show the reflection amplitude characteristics and reflection delay characteristics of the input terminal when the matching conditions of the input terminal of the transmission bandpass filter or the output terminal of the reception bandpass filter are changed, respectively. In the figure, 0 is the normalized center frequency obtained by normalizing the frequency of the adjacent band by the frequency of the terminal, and Δ is the adjacent bandwidth. In addition, the matching condition for the parameter "0dB180°" in the figure is "open, reflection phase 180°".
That is, it shows the case of total internal reflection, and "∞dB" shows the case of "reflection-free termination".
たとえば、第３図１，２の横軸の規格化周波数
2.196、すなわち隣接帯域の下端でみてみると、
無反射終端と全反射でもほぼ1dB程度リターンロ
スが変化する。また、反射遅延も2ns程度変化す
る。 For example, the normalized frequency on the horizontal axis in Figures 1 and 2
2.196, that is, at the lower end of the adjacent band,
Return loss changes by approximately 1 dB between non-reflection termination and total internal reflection. In addition, the reflection delay also changes by about 2 ns.
このことは、端子の終端条件が変化すると、隣
接帯域に受信レベル変動、キヤリア位相変動が生
じることを示している。 This indicates that when the terminal termination conditions change, reception level fluctuations and carrier phase fluctuations occur in adjacent bands.
したがつて増設、保守の際に、たとえば第１図
の受信帯域ろ波器２６を取り外すと、隣接チヤネ
ルＲ１のレベル、キヤリア位相が瞬時に変化し、
隣接チヤネルの受信器で受信誤りが発生し、サー
ビス中の回線が断となることもある。 Therefore, if, for example, the receiving band filter 26 in FIG. 1 is removed during expansion or maintenance, the level and carrier phase of the adjacent channel R1 will change instantaneously.
A reception error may occur in the receiver of an adjacent channel, causing the line in service to be disconnected.
考案の目的
本発明は従来の技術に内在する上記欠点を除去
する為になされたものであり、従つて本考案の目
的は、隣接周波数の送信帯域ろ波器（TX BR）
入力端子及び受信帯域ろ波器（RX BR）の出力
端子の整合条件に影響されない新規な送受分波装
置を提供することにある。Purpose of the invention The present invention has been made in order to eliminate the above-mentioned drawbacks inherent in the conventional technology.Therefore, the purpose of the present invention is to provide a transmission band filter (TX BR) for adjacent frequencies.
The object of the present invention is to provide a new transmitting/receiving demultiplexing device that is not affected by the matching conditions of the input terminal and the output terminal of a receiving band filter (RX BR).
考案の構成
上記目的を達成する為に、本考案に係る送受分
波装置は、Ｙ形サーキユレータを介してアンテナ
系が接続される分波装置において、その接続端子
に対し順方向端子に複数個の受信分波系が、逆方
向端子に複数個の送信分波系がそれぞれ接続され
複数のチヤンネルを分波する送受分波装置であつ
て、前記Ｙ形サーキユレータに近いシステムの送
信帯域ろ波器の入力端子及び受信帯域ろ波器の出
力端子にアイソレータを具備して構成される。Structure of the invention In order to achieve the above object, the transmission/reception demultiplexing device according to the present invention is a demultiplexing device in which an antenna system is connected via a Y-shaped circulator. The receiving/receiving demultiplexing system is a transmitting/receiving demultiplexing device in which a plurality of transmitting demultiplexing systems are respectively connected to reverse direction terminals and demultiplexes a plurality of channels, and the transmitting/receiving demultiplexing system is a transmitting band filter of a system close to the Y-shaped circulator. The input terminal and the output terminal of the reception bandpass filter are provided with an isolator.
考案の実施例の説明
以下本発案をその好ましい一実施例について図
面を参照しながら詳細に説明する。DESCRIPTION OF EMBODIMENTS OF THE INVENTION Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the drawings.
第５図は本考案による送受分波装置の一実施例
を示したブロツク構成図である。第５図におい
て、第１図と対応する部分には同一参照符号を付
している。第５図に示された実施例においては、
送受共用器DUP１２に近いシステム（送信周波
T1、受信周波R2のシステム）に対し、送信帯域
ろ波器１５の入力端子及び受信帯域ろ波器２６の
出力端子にそれぞれアイソレータ３０，３１が接
続されており、これらのアイソレータ３０，３１
は送信入力端子T1に対して順方向に、又受信入
力端子R2に対して逆方向となる様に方向性を決
めて接続される。 FIG. 5 is a block diagram showing an embodiment of the transmitting/receiving demultiplexing device according to the present invention. In FIG. 5, parts corresponding to those in FIG. 1 are given the same reference numerals. In the embodiment shown in FIG.
A system close to the duplexer DUP12 (transmission frequency
T 1 and reception frequency R 2 ), isolators 30 and 31 are connected to the input terminal of the transmission band filter 15 and the output terminal of the reception band filter 26, respectively.
is connected in a forward direction to the transmission input terminal T 1 and in a reverse direction to the reception input terminal R 2 .
かかる構成とした場合には、送信系では送信帯
域T2の送信波は送信帯域ろ波器１５の入力端子
で反射されるが、この送信帯域ろ波器１５の出力
端子の整合条件を一定に保つことができるため
に、他の送信側入力端子T1の負荷の整合条件の
影響を受けない利点をもつ。同様に、受信系では
受信帯域R1の信号を受信した時に、受信帯域ろ
波器２５の入力端子にて反射するが、この受信帯
域ろ波器２５の出力端子側にアイソレータ３１が
ある為に、出力端子R1の整合条件の影響を受け
ない利点をもつこととなる。 In the case of such a configuration, in the transmission system, the transmission wave of the transmission band T 2 is reflected at the input terminal of the transmission band filter 15, but the matching condition of the output terminal of the transmission band filter 15 is kept constant. Therefore, it has the advantage that it is not affected by the load matching condition of the other transmitting side input terminal T1 . Similarly, in the receiving system, when a signal in the receiving band R 1 is received, it is reflected at the input terminal of the receiving band filter 25, but since the isolator 31 is located on the output terminal side of the receiving band filter 25, , it has the advantage of not being affected by the matching condition of the output terminal R1 .
第６図は受信分波装置に本考案を適用した場合
の一実施例を示すブロツク図である。 FIG. 6 is a block diagram showing an embodiment in which the present invention is applied to a receiving and demultiplexing device.
第６図において、参照番号１１′は受信専用ア
ンテナ、２３，２４，２５′はＹ形サーキユレー
タ、２６〜２８は受信帯域ろ波器をそれぞれ示
し、受信帯域ろ波器２７，２８の出力端子にそれ
ぞれアイソレータ３０，３１が接続されている。 In FIG. 6, reference number 11' is a reception-only antenna, 23, 24, 25' are Y-shaped circulators, and 26 to 28 are reception band filters, respectively. Isolators 30 and 31 are connected to each.
考案の効果
以上第５図に示された一実施例について本考案
の説明を付したが、第４図１及び２に示したのが
前述の整合条件を変化させた時の隣接周波数帯域
の振幅周波数特性及び遅延周波数特性である。図
示の如く、隣接周波数は整合条件の影響を受けな
いことがわかる。Effects of the invention The invention has been explained with reference to the embodiment shown in Fig. 5, but Figs. 4 1 and 2 show the amplitudes of adjacent frequency bands when the matching conditions described above are changed. These are frequency characteristics and delay frequency characteristics. As shown, it can be seen that adjacent frequencies are not affected by the matching condition.
又、上記送信帯域ろ波器及び受信帯域ろ波器の
全ての端子にアイソレータを接続する場合も考え
られるが、この場合でも整合条件の影響を隣接周
波数が受けないことは自明である。 It is also conceivable that isolators are connected to all terminals of the transmission band filter and the reception band filter, but it is obvious that the adjacent frequencies will not be affected by the matching condition even in this case.
第１図は従来における送受分波装置の構成を示
すブロツク図、第２図は従来の構成の受信分波装
置の構成を示すブロツク図、第３図１，２は送信
帯域ろ波器入力端子或いは受信帯域ろ波器の出力
端子の整合条件を変えた時の入力端子の反射振幅
特性１、反射遅延特性２（図中Δは隣接周波数
帯域を示している）を示す図、第４図１，２は本
考案を実施した場合の反射振幅特性１及び反射遅
延特性２（整合条件に影響がないことが理解され
る）を示す図、第５図は本考案の一実施例を示す
ブロツク構成図、第６図は受信分波装置に本考案
を適用した場合の一実施例を示す図である。
１１……送受共用アンテナ、１１′……受信専
用アンテナ、１２……Ｙ形サーキユレータ（送受
共用器）、１３，１４，２３，２４……Ｙ形サー
キユレータ、１５，１６……送信帯域ろ波器
（TX BR）、２５，２６……受信帯域ろ波器
（RX BR）、３０，３１……アイソレータ、
0dB0°……出力端子開放反射位相0°、0dB90°……
出力端子開放反射位相90°、0dB180°……出力端子
開放反射位相180°（全反射）、0dB270°……出力端
子開放反射位相270°、∞dB……出力端子無反射
終端。
Fig. 1 is a block diagram showing the configuration of a conventional transmitting/receiving demultiplexing device, Fig. 2 is a block diagram showing the configuration of a conventional receiving/demultiplexing device, and Fig. 3 shows transmitting band filter input terminals. Alternatively, a diagram showing reflection amplitude characteristics 1 and reflection delay characteristics 2 (Δ in the figure indicates an adjacent frequency band) of the input terminal when the matching conditions of the output terminal of the receiving band filter are changed, Fig. 4 1 , 2 are diagrams showing reflection amplitude characteristics 1 and reflection delay characteristics 2 (it is understood that there is no effect on matching conditions) when the present invention is implemented, and Fig. 5 is a block configuration showing one embodiment of the present invention. 6 are diagrams showing an embodiment in which the present invention is applied to a receiving and demultiplexing device. 11...Antenna for transmitting and receiving, 11'...Antenna for receiving only, 12...Y type circulator (sending and receiving unit), 13, 14, 23, 24...Y type circulator, 15, 16...Transmitting band filter (TX BR), 25, 26... Reception band filter (RX BR), 30, 31... Isolator,
0dB0°……Output terminal open reflection phase 0°, 0dB90°……
Output terminal open reflection phase 90°, 0dB180°...Output terminal open reflection phase 180° (total reflection), 0dB270°...Output terminal open reflection phase 270°, ∞dB...Output terminal non-reflection termination.
Claims (1)
される分波装置において、その接続端子に対し順
方向端子にｍ個の受信分波系が、逆方向端子にｎ
個の送信分波系がそれぞれ接続され複数のチヤン
ネルを分波する送受分波装置であつて、 前記Ｙ形サーキユレータの接続端子から数えて
１番目から（ｍ−１）番目の受信分波系は、各々
受信帯域ろ波器の出力端子にアイソレータの一端
が接続され、このアイソレータの他端は受信機と
の接続端子に接続され、 前記Ｙ形サーキユレータの接続端子からｍ番目
の受信分波系は受信帯域ろ波器の出力端子が受信
機との接続端子に接続され、 前記Ｙ形サーキユレータの接続端子から数えて
１番目から（ｎ−１）番目の送信分波系は、各々
送信帯域ろ波器の入力端子がアイソレータの一端
に接続され、このアイソレータの他端は送信機と
の接続端子に接続され、 前記Ｙ形サーキユレータの接続端子から数えて
ｎ番目の送信分波系は送信帯域ろ波器の入力端子
が送信機との接続端子に接続される ことを特徴とする送受信分波装置。[Claims for Utility Model Registration] In a branching device in which an antenna system is connected via a Y-shaped circulator, m reception branching systems are connected to the forward direction terminal and n reception branching systems are connected to the reverse direction terminal with respect to the connection terminal.
It is a transmitting/receiving demultiplexing device for demultiplexing a plurality of channels in which several transmitting demultiplexing systems are connected to each other, and the first to (m-1)th receiving demultiplexing systems are counted from the connection terminal of the Y-shaped circulator. , one end of an isolator is connected to the output terminal of each reception bandpass filter, and the other end of this isolator is connected to a connection terminal with a receiver, and the m-th reception branching system from the connection terminal of the Y-shaped circulator is The output terminal of the reception band filter is connected to the connection terminal with the receiver, and the 1st to (n-1)th transmission branching systems counting from the connection terminal of the Y-shaped circulator are each connected to the transmission band filter. The input terminal of the isolator is connected to one end of the isolator, the other end of this isolator is connected to the connection terminal with the transmitter, and the n-th transmission branching system counting from the connection terminal of the Y-shaped circulator is a transmission band filter. A transmission/reception demultiplexing device characterized in that an input terminal of the device is connected to a connection terminal with a transmitter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984094139U JPS619904U (en) | 1984-06-22 | 1984-06-22 | Transmission/reception demultiplexing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984094139U JPS619904U (en) | 1984-06-22 | 1984-06-22 | Transmission/reception demultiplexing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS619904U JPS619904U (en) | 1986-01-21 |
| JPH0438562Y2 true JPH0438562Y2 (en) | 1992-09-09 |
Family
ID=30652435
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1984094139U Granted JPS619904U (en) | 1984-06-22 | 1984-06-22 | Transmission/reception demultiplexing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS619904U (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5619761A (en) * | 1979-07-26 | 1981-02-24 | Ricoh Co Ltd | Sheet clamping device |
-
1984
- 1984-06-22 JP JP1984094139U patent/JPS619904U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS619904U (en) | 1986-01-21 |
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