JPH0326024A - Repeater amplifier for radio transmitter-receiver - Google Patents
Repeater amplifier for radio transmitter-receiverInfo
- Publication number
- JPH0326024A JPH0326024A JP15958889A JP15958889A JPH0326024A JP H0326024 A JPH0326024 A JP H0326024A JP 15958889 A JP15958889 A JP 15958889A JP 15958889 A JP15958889 A JP 15958889A JP H0326024 A JPH0326024 A JP H0326024A
- Authority
- JP
- Japan
- Prior art keywords
- pass filter
- amplifier
- outdoor
- transmission
- equipment
- 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
Landscapes
- Transmitters (AREA)
Abstract
Description
［産業上の利用分野１
本発明は無線送受信装置用リピーター増幅器、特に屋内
装置と屋外装置とを一本の同軸ケーブルで接続して構成
される無線送受信装置の伝送線路のｉ戒に関する．
［従来の技術１
アンテナを有し屋外に設けられる屋外装置と、この屋外
装置と一本の同軸ケーブルで接続されて屋内に設けられ
る屋内装置にて構成される無線送受信装置が周知である
。上記屋内装置は屋外装置に送信信号を電源電流と共に
同軸ケーブルにて供給し、一方屋外装置はアンテナで受
信した受信信号を同軸ケーブルを介して屋内装置に供給
する．[Industrial Application Field 1] The present invention relates to a repeater amplifier for a wireless transmitter/receiver, and particularly to a transmission line of a wireless transmitter/receiver configured by connecting an indoor device and an outdoor device with a single coaxial cable. [Prior Art 1] A wireless transmitting/receiving device is well known which includes an outdoor device having an antenna and installed outdoors, and an indoor device connected to the outdoor device by a single coaxial cable and installed indoors. The indoor device supplies the outdoor device with a transmission signal along with a power supply current via a coaxial cable, while the outdoor device supplies a received signal received by an antenna to the indoor device via the coaxial cable.
上述の従来装置においては、屋外装置と屋内装置を接続
する同軸ケーブルでの伝送信号レベルの低下が問題とな
る．
すなわち、送受信中間周波数帯の信号損失により伝送信
号レベルが低下するので、必要な信号対雑音比を確保す
るためには同軸ケーブルの長さが制限されることになり
、この結果、屋外装置および屋内装置の配置の自由度が
なく、特に屋内装置の設置が制限されるという問題があ
った．また、伝送信号のレベル低下を防止するために、
直径の大きいケーブルを用いることも行われているが、
この場合には経済的な問題がある．本発明は上記問題点
に鑑みてなされたもので、その目的は、屋内装置および
屋外装置の設置の自由度を高め、かつ経済的な無線送受
信装置とすることのできる無線送受信装置用リピーター
増幅器を提供することにある．
［課題の解決手段１
上記目的を達或するために、本発明に係る無線送受信装
置用リピーター増幅器は、屋内装置からの出力のうち高
周波領域を通過させる送信用高域通過フィルタと、この
送信用高域通過フィルタの出力を増幅する送信用増幅器
と、屋内装置からの出力のうち低周波領域を通過させ直
流電源電力を屋外装置に供給する低域通過フィルタと、
屋外装置で受信した受信信号を入力しこの入力のうち高
周波領域を通過させる受信用高域通過フィルタと、この
受信用高域通過フィルタの出力を増幅する受信用増幅器
とを有するリピーター増幅器を、無線送受信装置を構成
するために一本の同軸ケーブルで接続された屋内装置と
屋外装置との間に配設した構成としてある．
［作用］
上記楕或によれば、屋内装置から送信信号および直流電
源電力が屋外装置に供給されることになるが、送信信号
は送信用高域通過フィルタにて分離され、送信用増幅器
によって送信中間周波信号が増幅されることになり、送
信信号のケーブル損失を保障することができる．一方、
直流電源電力は低域通過フィルタにて分離されて送信信
号が取り除かれた後に、増幅された送信信号と共に屋外
装置に供給される．
また、屋外装置で受信された受信信号は受信用高域通過
フィルタを介して受信用増幅器により受信中間周波信号
が増幅され、ケーブル損失を補償した受信信号が屋内装
置に供給される．［実施的
以下、本発明の一実施例について図面を参照しながら詳
細に説明する．
第１図には実施例のリピーター増幅器の回路構成が示さ
れ、第２図にはリピーター増幅器を設けた無線送受信装
置の概略構戒が示されている．第２図において、屋内装
置２１と屋外装置２４が一本の同軸ケーブル２２にて接
続されており、この同軸ケーブル２２の途中にリピータ
ー増幅器２３を設ける．なお、送受信用のアンテナ２５
は屋外装置２４に接続される．
また、第■図において、屋内装置側入力端子１と屋外装
置側入力端子２の間に、送信用高域通過フィルタ３、送
信用増幅器４および送信用高域通過フィルタ５を順次接
続する．上記入出力端子１，２の間に、直流電源電力を
供給するための低域通過フィルタ６，７，８．９を設け
、実施例では低域通過フィルタの出力により上記送信用
増幅器４および後述する受信用増幅器１２に動作電圧を
与える電圧安定化回路１０を設けている．
一方、受信用高域通過フィルタ１１、受信用増幅器１２
および受信用高域通過フィルタ■３を、上記低域通過フ
ィルタ６，９の間に設ける．実施例は以上の構戒からな
り、以下にその作用を説明する．
上記屋内装置側入出力端子ｌには、屋内装置から送信中
間周波信号と屋外装置のための直流電源出力が供給され
ており、上記送信中間周波信号は送信用高域通過フィル
タ３により分離され、送信用増幅器４によって所定レベ
ルまで増幅される．そして、送信用増幅器４により増幅
された送信中間周波信号は、受信中間周波信号を阻止す
るために設けられた送信用高域通過フィルタ５を介して
屋外装置側入力端子２に出力される．
一方、直流電源電流は低域通過フィルタ６により分離さ
れ、受信用高域通過フィルタ１１への入力を阻止された
状態で、更に低域通過フィルタ７，８，９を介して屋外
装置側入出力端子２に出力されており、この直流電源電
流は上記送信中間周波信号と共に屋外装置に供給される
．これによって、第２図の屋外装置２４は上記屋内装置
２１から供給された直流電源電力により動作されること
になり、上記送信中間周波信号にもとづいてアンテナ２
５から他の無線送受信装置に情報を送信することができ
る．
実施例では、上記低域通過フィルタ７の出力を電圧安定
化回路１０に入力し、これにより送信用増幅器４および
受信用増幅器１２に安定な電源電圧を供給することがで
きる．
また、屋外装置用入出力端子２には、屋外装置２４で受
けた受信中間周波信号が入力されることになり、この受
信中間周波信号は送信中間周波信号を阻止する低域通過
フィルタ９を介して受信用高域通過フィルタ１３および
低域通過フィルタ８に加えられ、直流電源電流と分離さ
れる．そして、受信用高域通過フィルタ１３を通過した
受信中間周波信号は受信用増幅器１２によって所定レベ
ルまで増幅され、その後に直流電源電流を阻止する受信
用高域通過フィルタ１１および送信中間周波信号を阻止
する低域通過フィルタ６を介して屋内装置側入出力端子
１に供給される．したがって、屋内装置２１では他の無
線送受信装置から送信され情報を受信中間周波信号によ
り得ることができる．
このようにして、送受信双方向の中間周波信号がリビー
タ増幅器２３で増幅されることになり、これと同時に屋
外装置に直流電源電力も供給できることになる．
なお、上記実施例では、送信中間周波信号の周波数が受
信中間周波信号より高い場合について説明したが、逆の
場合には、上記入出力端子１および２を反転させて用い
ればよいことになる．［発明の効果１
以上説明したように、本発明によれば、送信用および受
信用の高城通過フィルタと、この高城通過フィルタ出力
を増幅する送信用および受信用の増幅器と、直流電源電
力を供給する低域通過フィルタとでリピーター増幅器を
構戒し、このリピーター増幅器を一本の同軸ケーブルで
接続された屋内装置と屋外装置との間に配設するように
したので、屋内装置から屋外装置へ直流電力を供給しな
がら、送信中間周波信号および受信中間周波信号を増幅
中継して供給することができ、屋内装置と屋外装置の配
置間隔を従来よりも大幅に拡大することができる．
したがって、両装置の配置の自由度が増すと共に、ケー
ブル直径も大きくすることなく経済的な無線送受信装置
を得ることが可能となる．In the conventional equipment described above, a problem arises in that the transmission signal level decreases in the coaxial cable that connects the outdoor equipment and the indoor equipment. In other words, signal loss in the transmitting and receiving intermediate frequency bands reduces the transmitted signal level, which limits the length of coaxial cable to ensure the required signal-to-noise ratio. There was a problem in that there was no flexibility in the arrangement of equipment, and the installation of indoor equipment was particularly restricted. In addition, in order to prevent the level of the transmission signal from decreasing,
Although cables with larger diameters are also used,
There is an economic problem in this case. The present invention has been made in view of the above-mentioned problems, and an object thereof is to provide a repeater amplifier for a wireless transmitting/receiving device, which can increase the degree of freedom in installing indoor devices and outdoor devices, and can be made into an economical wireless transmitting/receiving device. The purpose is to provide. [Means for Solving Problems 1] In order to achieve the above object, a repeater amplifier for a wireless transmitter/receiver according to the present invention includes a high-pass filter for transmission that passes a high frequency region of the output from an indoor device, and a high-pass filter for transmitting a transmission amplifier that amplifies the output of the high-pass filter; a low-pass filter that passes a low frequency region of the output from the indoor device and supplies DC power to the outdoor device;
A repeater amplifier having a reception high-pass filter that inputs a reception signal received by an outdoor device and passes a high frequency region of this input, and a reception amplifier that amplifies the output of this reception high-pass filter, is installed wirelessly. In order to configure the transmitter/receiver device, it is configured to be installed between an indoor device and an outdoor device that are connected by a single coaxial cable. [Operation] According to the above structure, the transmission signal and the DC power supply power are supplied from the indoor device to the outdoor device, but the transmission signal is separated by the transmission high-pass filter and then transmitted by the transmission amplifier. The intermediate frequency signal will be amplified, and the cable loss of the transmitted signal can be guaranteed. on the other hand,
After the DC power source power is separated by a low-pass filter and the transmitted signal is removed, it is supplied to the outdoor equipment along with the amplified transmitted signal. In addition, the received signal received by the outdoor equipment is passed through a receiving high-pass filter, and the received intermediate frequency signal is amplified by the receiving amplifier, and the received signal with cable loss compensation is supplied to the indoor equipment. [Practice] Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 shows a circuit configuration of a repeater amplifier according to an embodiment, and FIG. 2 shows a schematic structure of a wireless transmitter/receiver equipped with a repeater amplifier. In FIG. 2, an indoor device 21 and an outdoor device 24 are connected by a single coaxial cable 22, and a repeater amplifier 23 is provided in the middle of this coaxial cable 22. In addition, an antenna 25 for transmitting and receiving
is connected to the outdoor device 24. Further, in FIG. 3, a transmission high-pass filter 3, a transmission amplifier 4, and a transmission high-pass filter 5 are connected in sequence between the indoor device input terminal 1 and the outdoor device input terminal 2. Low-pass filters 6, 7, 8.9 for supplying DC power are provided between the input/output terminals 1 and 2, and in the embodiment, the output of the low-pass filter is used to connect the transmitting amplifier 4 and the transmitting amplifier 4, which will be described later. A voltage stabilizing circuit 10 is provided to provide an operating voltage to the receiving amplifier 12. On the other hand, a receiving high-pass filter 11 and a receiving amplifier 12
A receiving high-pass filter (3) is provided between the low-pass filters 6 and 9. The example consists of the above-mentioned precepts, and their effects will be explained below. The indoor device side input/output terminal l is supplied with a transmission intermediate frequency signal from the indoor device and a DC power output for the outdoor device, and the transmission intermediate frequency signal is separated by a transmission high-pass filter 3. The signal is amplified to a predetermined level by the transmitting amplifier 4. The transmission intermediate frequency signal amplified by the transmission amplifier 4 is output to the outdoor device side input terminal 2 via the transmission high-pass filter 5 provided to block the reception intermediate frequency signal. On the other hand, the DC power supply current is separated by the low-pass filter 6 and is blocked from being input to the receiving high-pass filter 11, and is further input to/output from the outdoor equipment side via the low-pass filters 7, 8, and 9. It is output to terminal 2, and this DC power supply current is supplied to the outdoor equipment together with the above-mentioned transmission intermediate frequency signal. As a result, the outdoor device 24 in FIG. 2 is operated by the DC power supply supplied from the indoor device 21, and the antenna 2
5 can transmit information to other wireless transmitting/receiving devices. In the embodiment, the output of the low-pass filter 7 is input to the voltage stabilizing circuit 10, thereby making it possible to supply a stable power supply voltage to the transmitting amplifier 4 and the receiving amplifier 12. Furthermore, the received intermediate frequency signal received by the outdoor device 24 is inputted to the outdoor device input/output terminal 2, and this received intermediate frequency signal is passed through the low-pass filter 9 that blocks the transmitted intermediate frequency signal. is added to the receiving high-pass filter 13 and low-pass filter 8, and is separated from the DC power supply current. The reception intermediate frequency signal that has passed through the reception high-pass filter 13 is amplified to a predetermined level by the reception amplifier 12, and then the reception high-pass filter 11 blocks the DC power supply current and the transmission intermediate frequency signal is blocked. The signal is supplied to the input/output terminal 1 on the indoor equipment side through a low-pass filter 6. Therefore, the indoor device 21 can obtain information transmitted from other wireless transmitting/receiving devices using the received intermediate frequency signal. In this way, the intermediate frequency signals for both transmission and reception are amplified by the rebeater amplifier 23, and at the same time, DC power can also be supplied to the outdoor equipment. In the above embodiment, the case where the frequency of the transmitting intermediate frequency signal is higher than that of the receiving intermediate frequency signal has been described, but in the opposite case, the input/output terminals 1 and 2 may be used by inverting them. [Effect of the Invention 1] As explained above, according to the present invention, there are a Takagi pass filter for transmitting and receiving, an amplifier for transmitting and receiving which amplifies the output of the Takagi pass filter, and a DC power source that supplies DC power. We designed a repeater amplifier with a low-pass filter, and installed this repeater amplifier between the indoor equipment and outdoor equipment, which are connected by a single coaxial cable, so that the repeater amplifier can be installed between the indoor equipment and the outdoor equipment, which are connected by a single coaxial cable. While supplying DC power, it is possible to amplify and relay the transmitting intermediate frequency signal and the receiving intermediate frequency signal and supply it, making it possible to significantly expand the spacing between indoor and outdoor equipment compared to conventional methods. Therefore, the degree of freedom in arranging both devices increases, and it becomes possible to obtain an economical wireless transmitter/receiver device without increasing the cable diameter.
第１図は本発明の実施例に係るリピーター増幅器の回路
楕戒を示す回路ブロック図、第２図は実施例の無線送受
信装置の全体楕或を示すブロック図である．
１：屋内装置側入出力端子
２：屋外装置側入出力端子
３，５：送信用高域通過フィルタ
４：送信用増幅器
６，７，８．９ ：低域通過フィルタ
１ １．１ ３ ：受信用高域通過フィルタ１２：受信
用増幅器 ２１：屋内装置
２２：同軸ケーブル ２３：リピーター増幅器２４：屋
外装置FIG. 1 is a circuit block diagram showing the circuit diagram of a repeater amplifier according to an embodiment of the present invention, and FIG. 2 is a block diagram showing the overall circuit diagram of a wireless transmitting/receiving device according to the embodiment. 1: Indoor device side input/output terminal 2: Outdoor device side input/output terminal 3, 5: Transmission high-pass filter 4: Transmission amplifier 6, 7, 8.9: Low-pass filter 1 1.1 3: Reception High-pass filter 12: Receiving amplifier 21: Indoor device 22: Coaxial cable 23: Repeater amplifier 24: Outdoor device
Claims (1)
用高域通過フィルタと、この送信用高域通過フィルタの
出力を増幅する送信用増幅器と、屋内装置からの出力の
うち低周波領域を通過させ直流電源電力を屋外装置に供
給する低域通過フィルタと、屋外装置で受信した受信信
号を入力しこの入力のうち高周波領域を通過させる受信
用高域通過フィルタと、この受信用高域通過フィルタの
出力を増幅する受信用増幅器とを有するリピーター増幅
器を、無線送受信装置を構成するために一本の同軸ケー
ブルで接続された屋内装置と屋外装置との間に配設する
無線送受信装置用リピーター増幅器。A transmission high-pass filter that passes the high-frequency region of the output from the indoor device, a transmission amplifier that amplifies the output of the transmission high-pass filter, and a transmission amplifier that passes the low-frequency region of the output from the indoor device. A low-pass filter that supplies direct current power to the outdoor device, a high-pass filter for receiving that inputs the received signal received by the outdoor device and passes a high frequency region of this input, and this high-pass filter for receiving. A repeater amplifier for a wireless transmitting/receiving device, in which a repeater amplifier having a receiving amplifier for amplifying the output is arranged between an indoor device and an outdoor device connected by a single coaxial cable to configure the wireless transmitting/receiving device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15958889A JPH0326024A (en) | 1989-06-23 | 1989-06-23 | Repeater amplifier for radio transmitter-receiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15958889A JPH0326024A (en) | 1989-06-23 | 1989-06-23 | Repeater amplifier for radio transmitter-receiver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0326024A true JPH0326024A (en) | 1991-02-04 |
Family
ID=15696989
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15958889A Pending JPH0326024A (en) | 1989-06-23 | 1989-06-23 | Repeater amplifier for radio transmitter-receiver |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0326024A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU661451B3 (en) * | 1995-03-24 | 1995-07-20 | Tzong Min Chen | An indoor repeater for a wireless |
| JP2001326582A (en) * | 2000-05-18 | 2001-11-22 | Toshiba Corp | Bidirectional booster |
| CN104536352A (en) * | 2015-01-07 | 2015-04-22 | Comlab（北京）通信系统设备有限公司 | Power amplifier device used for repeater |
-
1989
- 1989-06-23 JP JP15958889A patent/JPH0326024A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU661451B3 (en) * | 1995-03-24 | 1995-07-20 | Tzong Min Chen | An indoor repeater for a wireless |
| JP2001326582A (en) * | 2000-05-18 | 2001-11-22 | Toshiba Corp | Bidirectional booster |
| CN104536352A (en) * | 2015-01-07 | 2015-04-22 | Comlab（北京）通信系统设备有限公司 | Power amplifier device used for repeater |
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