JPS6192044A - wireless relay device - Google Patents
wireless relay deviceInfo
- Publication number
- JPS6192044A JPS6192044A JP21362584A JP21362584A JPS6192044A JP S6192044 A JPS6192044 A JP S6192044A JP 21362584 A JP21362584 A JP 21362584A JP 21362584 A JP21362584 A JP 21362584A JP S6192044 A JPS6192044 A JP S6192044A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- relay device
- receiver
- receiving antenna
- phase
- 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
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/155—Ground-based stations
- H04B7/15564—Relay station antennae loop interference reduction
- H04B7/15585—Relay station antennae loop interference reduction by interference cancellation
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Radio Relay Systems (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、同時に受信動作と送信動作とが要求される
無線中継装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a wireless relay device that is required to perform reception and transmission operations at the same time.
第３図は従来のこの種の無線中継装置を示すものであ９
２図において、（ｌ）は受信空中線、（２）はこの受信
空中線にて受信された信号を増幅及び検波する受信機、
（３）はこの受信機からの出力信号を送信信号に変換す
る信号変換器、（４）はこの信号変換器からの送信信号
を所定の送信信号レベルまで増幅する送信機、（５）は
この送信機からの増幅された送信信号を送信する送信空
中線である。Figure 3 shows a conventional wireless relay device of this type9.
In Figure 2, (l) is a receiving antenna, (2) is a receiver that amplifies and detects the signal received by this receiving antenna,
(3) is a signal converter that converts the output signal from this receiver into a transmission signal, (4) is a transmitter that amplifies the transmission signal from this signal converter to a predetermined transmission signal level, and (5) is this signal converter. It is a transmitting antenna that transmits the amplified transmission signal from the transmitter.
次に、この様に構成された無線中継装置の動作について
説明する。Next, the operation of the wireless relay device configured in this manner will be explained.
受信空中線（１）にて受信された信号を、受信機（２）
が増幅及び検波する。この増幅及び検波された受信機（
２）からの出力信号は信号変換器（３）にて送信信号に
変換された後、送信機（４）に伝達される。この送信機
（４）にて送信信号が所定の送信レベルまで増幅された
後、送信空中線（５）から送信されることになるもので
ある。The signal received by the receiving antenna (1) is transferred to the receiver (2).
is amplified and detected. This amplified and detected receiver (
The output signal from 2) is converted into a transmission signal by a signal converter (3) and then transmitted to a transmitter (4). After the transmission signal is amplified to a predetermined transmission level by the transmitter (4), it is transmitted from the transmission antenna (5).
しかるに、この様に構成された無線中継装置にあっては
、送信空中線（５）からの送信信号の一部が受信空中線
（１）に受信され、送信信号の影響を受は易いものであ
る。この送信信号の影響を避けるために、第１に送信空
中線（５）からの送信信号を小さくして受信空中線（１
）に受信される送信信号を少なくする。第２に送信空中
線（５）からの送信信号の周波数を受信空中線（１）に
て受信される信号の周波数に対して大きく離隔する。第
３に受信空中線（１）と送信空中線（５）との距離を大
きくとる。第４に受信空中線（１）と受信機（２）との
間に大型かつ高性能の濾波器を設ける等の方法が考えら
れる。しかし、第１の方法では送信機の機能上、送信信
号を小さくすることは不可能であり、第２の方法では装
置が複雑になるとともに他の装置にも影響を及ぼし。However, in the radio relay device configured in this way, a part of the transmitted signal from the transmitting antenna (5) is received by the receiving antenna (1), and it is easily influenced by the transmitted signal. In order to avoid the influence of this transmitted signal, the first step is to reduce the transmitted signal from the transmitting antenna (5) and reduce the transmitting signal from the receiving antenna (1).
) to reduce the transmitted signal received. Second, the frequency of the transmitted signal from the transmitting antenna (5) is separated by a large distance from the frequency of the signal received by the receiving antenna (1). Third, the distance between the receiving antenna (1) and the transmitting antenna (5) is increased. A fourth method is to provide a large and high-performance filter between the receiving antenna (1) and the receiver (2). However, in the first method, it is impossible to reduce the transmitted signal due to the function of the transmitter, and in the second method, the device becomes complicated and also affects other devices.
第３の方法では装置が大型化し、第４の方法では装置が
高価かつ大型になるという問題点を有するものであった
。The third method has the problem that the device becomes large, and the fourth method has the problem that the device becomes expensive and large.
この発明は、上記した点に鑑みてなされたものであり、
簡単かつ小型にして送信空中線からの送信信号の影響を
軽減できる無線中継装置を得ることを目的とするもので
ある。This invention was made in view of the above points,
The object of the present invention is to obtain a wireless relay device that is simple and compact and can reduce the influence of transmitted signals from a transmitting antenna.
この発明に係る無線中継装置は、送信信号の一部を位相
変更器にて所定の位相変更量にて移相し。The wireless relay device according to the present invention phase-shifts a part of the transmission signal by a predetermined phase change amount using a phase changer.
受信空中線にて受信された信号と位相変更器からの出力
信号とを加算する加算器とを受信空中線と受信機との間
に設けたものである。An adder for adding the signal received by the receiving antenna and the output signal from the phase changer is provided between the receiving antenna and the receiver.
この発明においては２位相変更器が送信信号を所定の位
相量にて移相し、加算器゛が受信空中線にて受信された
信号と位相変更器からの出力信号とを加算して、受信空
中線において受信された送信空中線からの送信信号を打
ち消す方向に機能するものである。In this invention, the two-phase changer phase-shifts the transmitted signal by a predetermined phase amount, and the adder adds the signal received by the receiving antenna and the output signal from the phase changer to It functions in the direction of canceling the transmitted signal received from the transmitting antenna.
説明すると２図において、（６）は送信機（４）と送信
空中線（５）との間に接続され、送信機（４）からの出
力信号（第塾図に符号ａυとして示す。）を送信空中線
（５）に伝達するとともに、この出力信号Ｉの一部（第
λ
３図に符号α榎として示す。）を取シ出す信号結合器で
、この一部信号α棒は送信空中線（５）から受信空中大
きさを有しているものである。（７）はこの信号結るよ
うに移相（この位相変更量を第１図にθ１として示す。To explain, in Figure 2, (6) is connected between the transmitter (4) and the transmitting antenna (5), and transmits the output signal from the transmitter (4) (shown as aυ in Figure 2). This is a signal combiner that transmits a part of the output signal I (indicated by the symbol α in Fig. 3) to the antenna (5), and also takes out a part of the output signal I (indicated by the symbol α in Fig. 3). It has a received airborne magnitude from . (7) is a phase shift to connect this signal (this amount of phase change is shown as θ1 in FIG. 1).
）する位相変更器、（８）は上記受信空中線（１）と受
信機（２ンとの間に接続され、受信空中線（１）にて受
信された信号と上記位相変更器（７局為らの移相信号０
とを加算する加算器である。), the phase changer (8) is connected between the receiving antenna (1) and the receiver (2), and the phase changer (8) is connected between the receiving antenna (1) and the receiver (2). phase shift signal of 0
This is an adder that adds
次に、この様に構成された無線中継装置の動作について
説明する。Next, the operation of the wireless relay device configured in this manner will be explained.
受信空中線（！ンにて受信された受信信号が信号加算器
（８）に入力される。この受信信号は最初送信空中線（
５）からの回シ込み信号α巧が含まれていないが。The received signal received at the receiving antenna (!) is input to the signal adder (8).This received signal is first input to the transmitting antenna (!).
Although the input signal α Takumi from 5) is not included.
受信信号が信号加算器（８）、受信機（２）、信号変換
器（３）、送信機（４）、及び信号結合器（６）を介し
て送信空中線（５）から送信されるまでの伝送時間２例
えば数μｓ、後回り込み信号（１２が含まれることにな
るものである。信号加算器（８）は、受信空中線（１１
にて受信された受信信号と位相変更器（７）からの移相
信号も３とを加算して受信機（２）に出力するものであ
る。The received signal passes through a signal adder (8), a receiver (2), a signal converter (3), a transmitter (4), and a signal combiner (6) before being transmitted from the transmitting antenna (5). The transmission time 2 is, for example, several μs, and the late loop signal (12) is included.The signal adder (8) is connected to the reception antenna (11
The received signal received by the phase changer (7) and the phase shift signal from the phase changer (7) are added together and outputted to the receiver (2).
この時、信号加算器（８）からの出力信号は、第３図か
ら明らかなように回り込み信号＋１３と移相信号αｊと
が同じ大きさであり、かつ１８０°位相が違うため２回
り込み信号α邊を含まないものである。そして、信号加
算器（８）からの出力信号を、受信機（２）が増幅及び
検波する。この増幅及び検波された受信機（２）からの
出力信号は信号変換器（３）にて送信信号に変換された
後、送信機（４）に伝達される。この送信機（４）にて
送信信号が所定のレベルまで増幅された後、信号結合器
（６）を介して送信空中線（５）から送信されることに
なるものである。一方、送信機（４）からの出力信号の
一部は信号結合器（６）から取り出されて２位相変更器
（７）にてθ２移相されて信号加算器（８）に入力され
るものである。At this time, as is clear from FIG. 3, the output signal from the signal adder (8) has the same magnitude as the loop signal +13 and the phase-shifted signal αj, and their phases are different by 180°. This does not include the edges. Then, the receiver (2) amplifies and detects the output signal from the signal adder (8). This amplified and detected output signal from the receiver (2) is converted into a transmission signal by a signal converter (3), and then transmitted to a transmitter (4). After the transmitter (4) amplifies the transmitting signal to a predetermined level, the signal is transmitted from the transmitting antenna (5) via the signal combiner (6). On the other hand, a part of the output signal from the transmitter (4) is taken out from the signal combiner (6), phase-shifted by θ2 in the 2-phase changer (7), and input to the signal adder (8). It is.
この様に構成された無線中継装置にあっては。In a wireless relay device configured in this way.
信号結合器（６）９位相変更器（７）、及び信号加算器
（８）が、送信空中線（５）からの回り込み信号を打ち
消すため、送信空中線（５）からの送信信号による受信
機（２）への影響は全くなくなり、その結果、送信空中
線（５）からの送信信号も安定なものとなるものである
。A signal combiner (6), a phase changer (7), and a signal adder (8) cancel the loop signal from the transmitting antenna (5), so that the receiver (2) receives the transmitted signal from the transmitting antenna (5). ) is completely eliminated, and as a result, the transmitted signal from the transmitting antenna (5) also becomes stable.
なお、上記実施例においては、信号結合器（６）を送信
機（４）と送信空中線（５）との間に接続したものとし
たが、信号変換器（３）と送信機（４）との間に接続し
たものとしても良いものである。In the above embodiment, the signal combiner (6) was connected between the transmitter (4) and the transmitting antenna (5), but the signal converter (3) and the transmitter (4) It is also good to connect between the two.
また１位相変更器（７）の位相変更量を１回シ込み信号
α２に対して１８０°移相するものとしたが、これに限
られるものではない。ただし、１８０°移相以外の場合
は、若干効果が劣るものである。Furthermore, although the phase change amount of the single phase changer (7) is shifted once by 180 degrees with respect to the shunt signal α2, the present invention is not limited to this. However, in cases other than 180° phase shift, the effect is slightly inferior.
この発明は以上に述べたように、受信空中線にて受信さ
れた信号を受信機及び送信機を介して送信空中線から送
信するものにおいて、送信信号の一部を所定の位相変更
量にて移相する位相変更器と、受信空中線と受信機との
間に接続され、受信空中線にて受信された信号と位相変
更器からの出力信号を加算する加算器とを設けたので、
簡単な構成にして、送信空中線からの送信信号による受
信機への影響が抑制され、送信空中線からの送信信号が
安定になるという効果を有するものである。As described above, this invention transmits a signal received by a receiving antenna from a transmitting antenna via a receiver and a transmitter, in which a part of the transmitted signal is phase shifted by a predetermined phase change amount. and an adder connected between the reception antenna and the receiver to add the signal received by the reception antenna and the output signal from the phase changer.
With a simple configuration, the effect of the transmitting signal from the transmitting antenna on the receiver is suppressed, and the transmitting signal from the transmitting antenna becomes stable.
第１図はこの発明の一実施例を示すブロック系統図、第
２図は信号の位相関係を示す図、第３図は従来の無線中
継装置を示すブロック系統図である。
図において、（１）は受信空中線、（２）は受信機、（
４）は送信機、（５）は送信空中線、（７）は位相変更
器、（８）は加算器である。
なお、各図中、同一符号は同−又は相当部分を示す。FIG. 1 is a block diagram showing an embodiment of the present invention, FIG. 2 is a diagram showing the phase relationship of signals, and FIG. 3 is a block diagram showing a conventional wireless relay device. In the figure, (1) is the receiving antenna, (2) is the receiver, (
4) is a transmitter, (5) is a transmitting antenna, (7) is a phase changer, and (8) is an adder. In each figure, the same reference numerals indicate the same or corresponding parts.
Claims (3)
機を介して送信空中線から送信するものにおいて、送信
信号の一部を所定の位相変更量にて移相する位相変更器
と、上記受信空中線と受信機との間に接続され、受信空
中線にて受信された信号と上記位相変更器からの出力信
号を加算する加算器とを設けたことを特徴とする無線中
継装置。(1) In a device that transmits a signal received by a receiving antenna from a transmitting antenna via a receiver and a transmitter, a phase shifter that shifts a part of the transmitted signal by a predetermined phase change amount; 1. A radio relay device comprising: an adder connected between a receiving antenna and a receiver for adding a signal received by the receiving antenna and an output signal from the phase changer.
徴とする特許請求の範囲第１項記載の無線中継装置。(2) The radio relay device according to claim 1, wherein the transmission signal is an output signal from a transmitter.
が受信空中線にて受信された信号に対して１８０°変更
されるものとしたことを特徴とする特許請求の範囲第１
項又は第２項記載の無線中継装置。(3) The amount of phase change in the phase changer is such that the output signal thereof is changed by 180 degrees with respect to the signal received by the receiving antenna.
3. The wireless relay device according to item 1 or 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21362584A JPS6192044A (en) | 1984-10-11 | 1984-10-11 | wireless relay device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21362584A JPS6192044A (en) | 1984-10-11 | 1984-10-11 | wireless relay device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6192044A true JPS6192044A (en) | 1986-05-10 |
Family
ID=16642256
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21362584A Pending JPS6192044A (en) | 1984-10-11 | 1984-10-11 | wireless relay device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6192044A (en) |
-
1984
- 1984-10-11 JP JP21362584A patent/JPS6192044A/en active Pending
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