JPH04156730A - Repeating radio transmitter-receiver - Google Patents
Repeating radio transmitter-receiverInfo
- Publication number
- JPH04156730A JPH04156730A JP2282254A JP28225490A JPH04156730A JP H04156730 A JPH04156730 A JP H04156730A JP 2282254 A JP2282254 A JP 2282254A JP 28225490 A JP28225490 A JP 28225490A JP H04156730 A JPH04156730 A JP H04156730A
- Authority
- JP
- Japan
- Prior art keywords
- transmitter
- signal
- demodulated
- demodulated signal
- receiver
- 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
- 230000005540 biological transmission Effects 0.000 claims description 12
- 230000000630 rising effect Effects 0.000 claims description 3
- 230000001934 delay Effects 0.000 abstract 1
- 230000005236 sound signal Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 2
- 230000001629 suppression Effects 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 1
Landscapes
- Transceivers (AREA)
- Radio Relay Systems (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は中継無線送受信機に関し、特に音声およびデー
タを無線により中継送受信する中継無線送受信機に関す
る。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a relay wireless transmitter/receiver, and more particularly to a relay wireless transmitter/receiver that wirelessly transmits and receives voice and data.
音声やデータを無線によって伝送する中継無線送受信機
はよく知られている。Relay wireless transceivers that transmit voice and data wirelessly are well known.
従来の中継無線送受信機は、第３図に示すように、同一
の送、受信機２台から成るＮｏ、１およびＮｏ、２送受
信機１１Ａおよび１１Ｂで構成され、電波を受ける受信
用空中線１または６と、受信用空中線１または６で受け
た電波を復調した復調信号Ｓ１または（Ｓｌ）のレベル
が雑音抑制のために設定されるスケルチレベルを超える
時にスケルチ信号Ｓ２または（Ｓ２）を出力する受信機
′２または受信機４と、受信機２または受信機４がら出
力するスケルチ信号Ｓ２まｋは（Ｓ２）により送信信号
Ｓ３またはくＳ３）を送信空中線１０まなは９に出力す
る送信機５または送信機３と、送信電波を放射する送信
用空中線１０またはりを備えて成る。As shown in FIG. 3, a conventional relay radio transmitter/receiver is composed of No. 1 and No. 2 transmitter/receivers 11A and 11B, which are two identical transmitting and receiving devices, and has a receiving antenna 1 or a receiving antenna for receiving radio waves. 6, and a receiver that outputs a squelch signal S2 or (S2) when the level of the demodulated signal S1 or (Sl) obtained by demodulating the radio wave received by the reception antenna 1 or 6 exceeds a squelch level set for noise suppression. The squelch signal S2 outputted from the transmitter 2 or receiver 4 and the transmitter 5 or 5 outputs the transmitted signal S3 or S3) to the transmitting antenna 10 or 9 by (S2). It comprises a transmitter 3 and a transmitting antenna 10 or a beam that emits a transmitting radio wave.
第４図は、第３図の中継無線送受信機の主要波形図であ
る。第４図に示す如く、たとえば受信空中線１の入力を
受信機２で受け、その復調信号Ｓ１が、雑音抑圧の目的
で設定されるスケルチレベルＳＱを超えるとスケルチ信
号Ｓ２が出力される。このスケルチ信号Ｓ２によって送
信機５から送信信号Ｓ３が出力され、送信空中線１０を
介して放射するようにして中継動作が行なわれる。受信
用空中線６で受けた入力を送信用空中線９から所定の中
継出力で送出する動作についても全く同様である。FIG. 4 is a main waveform diagram of the relay radio transceiver shown in FIG. 3. As shown in FIG. 4, for example, when the receiver 2 receives an input from the receiving antenna 1 and the demodulated signal S1 exceeds a squelch level SQ set for the purpose of noise suppression, a squelch signal S2 is output. This squelch signal S2 causes the transmitter 5 to output a transmission signal S3, which is then radiated via the transmission antenna 10, thereby performing a relay operation. The same applies to the operation of transmitting the input received by the receiving antenna 6 from the transmitting antenna 9 at a predetermined relay output.
上述した従来の中継無線送受機における中継動作におい
ては、受信機における復調信号のレベルがスケルチレベ
ルを超える時にスケルチ信号を発生し、このスケルチ信
号によって送信機が駆動されて送信信号が出力されるよ
うに中継動作が行なわれるが、この場合、送信機のトラ
ンジスタの電気的特性によって、送信信号が定常状態に
立上るまでには、第４図に示す如く遅れ時間ｔを生じ、
この間の送信は、杜絶して頭切れになってしまうという
欠点がある。In the relay operation of the conventional relay radio transceiver described above, a squelch signal is generated when the level of the demodulated signal at the receiver exceeds the squelch level, and this squelch signal drives the transmitter to output a transmission signal. In this case, due to the electrical characteristics of the transistor in the transmitter, there is a delay time t as shown in Fig. 4 before the transmitted signal rises to a steady state.
There is a drawback that the transmission during this period is interrupted and is cut off.
本発明の中継無線送受信機は、音声もしくはデータで変
調された無線信号を受信して復調信号となし、再びこの
復調信号で変調された送信信号を送信して無線信号の中
継を行なう中継無線送受信機において、前記復調信号が
送信機の立上り時点を完全に経過してから送信機に供給
されるように前記復調信号に遅延を与える手段を備えて
構成される。The relay wireless transmitter/receiver of the present invention receives a wireless signal modulated with voice or data, converts it into a demodulated signal, and again transmits a transmission signal modulated with this demodulated signal to relay the wireless signal. The transmitter is configured to include means for delaying the demodulated signal so that the demodulated signal is supplied to the transmitter after the transmitter's rising time has completely passed.
また、本発明の中継無線送受信機は、前記遅延を与える
手段をアナログ遅延ラインで形成した構成を有する。Further, the relay radio transmitter/receiver of the present invention has a configuration in which the means for providing the delay is formed by an analog delay line.
次に、本発明について図面を参照して説明する。 Next, the present invention will be explained with reference to the drawings.
第１図は本発明の一実施例のブロック図である。第１図
に示す実施例は、Ｎｏ、１送受信機１２ＡおよびＮｏ、
２送受信機１２Ｂ、受信用空中線１，６および送信用空
中線９．１０を備えて成る。FIG. 1 is a block diagram of one embodiment of the present invention. The embodiment shown in FIG.
2 transceiver 12B, receiving antennas 1 and 6, and transmitting antennas 9 and 10.
Ｎ０１１送受信機１２ａは、第３図に示す従来例と同じ
受信機２．送信機３のほかアナログ遅延ラインで構成し
た遅延回路７を備えて成る。またＮＯ１２送受信機２Ｂ
は、第３図に示す従来例と同じ受信機４．送信機らのほ
か、アナログ遅延ラインで構成した遅延回路８を備えて
成る。The N011 transceiver 12a is the same receiver 2. as the conventional example shown in FIG. In addition to the transmitter 3, it includes a delay circuit 7 composed of an analog delay line. Also NO12 transmitter/receiver 2B
The receiver 4. is the same as the conventional example shown in FIG. In addition to the transmitter, it also includes a delay circuit 8 made up of an analog delay line.
次に、第１図の実施例の動作について説明する。Next, the operation of the embodiment shown in FIG. 1 will be explained.
受信用空中線１または６により電波を受け、その高周波
信号を受信機２または４に入力して復調を行なう。復調
信号Ｓ１またはくＳｌ）のレベルがスケルチレベルを超
えるとスケルチ信号Ｓ２またはくＳ２）が送信機５また
は３に出力されるとともに復調信号Ｓ１またはくＳｌ）
が遅延回路７または８に入力される。A radio wave is received by a receiving antenna 1 or 6, and the high frequency signal is input to a receiver 2 or 4 for demodulation. When the level of the demodulated signal S1 or S1) exceeds the squelch level, the squelch signal S2 or S2) is output to the transmitter 5 or 3, and the demodulated signal S1 or S1) is output to the transmitter 5 or 3.
is input to the delay circuit 7 or 8.
第２図は第１図の実施例の主要波形図である。FIG. 2 is a diagram of main waveforms of the embodiment shown in FIG.
復調信号Ｓ１または（Ｓｌ）のレベルがスケルチレベル
ＳＱを超えると、スケルチ信号Ｓ２または（Ｓ２）が受
信機２または４から出力される。When the level of demodulated signal S1 or (Sl) exceeds squelch level SQ, squelch signal S2 or (S2) is output from receiver 2 or 4.
スケルチ信号Ｓ２またはくＳ２）はそれぞれ、送信機５
または送信機３に送出され、復調信号Ｓ１または（Ｓ２
）は回路または８に供給される。The squelch signal S2 or S2) is transmitted to the transmitter 5, respectively.
Or sent to the transmitter 3, demodulated signal S1 or (S2
) is supplied to the circuit or 8.
これら遅延回路の出力は、遅延回路出力Ｓ４゜（Ｓ４）
として、それぞれ送信機５，３に供給される。The outputs of these delay circuits are the delay circuit output S4° (S4)
and are supplied to transmitters 5 and 3, respectively.
遅延回路出力Ｓ４または（Ｓ４）は、第２図に示す如く
、復調信号Ｓ１をｔ＋αだけ遅延させたものである。こ
こでｔは、前述した如く送信機５または３の正常状態ま
での立上り時間に相当し、αはこの立上り時間を確保す
るために追加した時間で、このｔ＋αの遅延時間を与え
られた復調信号としての遅延回路出力Ｓ４または（Ｓ４
）はそれぞれ、送信機５または３で、スケルチ信号Ｓ２
または（Ｓ２）によって送信信号Ｓ３またはくＳ３）が
完全に立上った状態で変調信号として供給され、こうし
て送信杜絶のない状態で送信信号Ｓ３またはくＳ３）が
出力される。The delay circuit output S4 or (S4) is the demodulated signal S1 delayed by t+α, as shown in FIG. Here, t corresponds to the rise time for the transmitter 5 or 3 to reach a normal state as described above, and α is the time added to ensure this rise time, and the demodulated signal given the delay time of t+α as delay circuit output S4 or (S4
) is the squelch signal S2 at the transmitter 5 or 3, respectively.
Alternatively, by (S2), the transmission signal S3 or S3) is supplied as a modulated signal in a completely rising state, and thus the transmission signal S3 or S3) is output without transmission interruption.
〔発明の効果〕
以上説明したように本発明は、中継復調した音声信号も
しくはデータによる復調信号を送信機が完全に立ち上が
るのを待ってから送信機に出力することにより、中継送
信信号の頭切れを防ぎ、欠落のない完全な送信中継を行
なうことができるという効果を有する。[Effects of the Invention] As explained above, the present invention prevents the beginning of the relay transmission signal from being cut off by waiting for the transmitter to completely rise up before outputting the relay demodulated voice signal or data demodulation signal to the transmitter. This has the effect that it is possible to perform complete transmission relay without any dropouts.
第１図は本発明の一実施例のブロック図、第２図は第１
図の実施例の主要波形図、第３図は従来の中継無線送受
信機のブロック図、第４図は第３図の中継無線送受信機
の主要波形図である。
１．６・・・受信用空中線、２・・・受信機、３・・・
送信機、４・・・受信機、５・・・送信機、７，８・・
・遅延回路、９．１０・・・送信用空中線、ＩＩＡ、１
２Ａ・・・Ｎｏ、１送受信機、ＩＩＢ、１２Ｂ・・・Ｎ
Ｏ１２送受信機、５ｌ（Ｓｌ）・・・復調信号、Ｓ２
（Ｓ２）・・・スケルチ信号、５３（Ｓ３）・・・送信
信号、５４（Ｓ４）・・・遅延回路出力。FIG. 1 is a block diagram of one embodiment of the present invention, and FIG. 2 is a block diagram of an embodiment of the present invention.
FIG. 3 is a block diagram of a conventional relay radio transmitter/receiver, and FIG. 4 is a main waveform diagram of the relay radio transmitter/receiver of FIG. 3. 1.6...Receiving antenna, 2...Receiver, 3...
Transmitter, 4... Receiver, 5... Transmitter, 7, 8...
・Delay circuit, 9.10... Transmitting antenna, IIA, 1
2A...No, 1 transceiver, IIB, 12B...N
O12 transceiver, 5l (Sl)... demodulated signal, S2
(S2)... Squelch signal, 53 (S3)... Transmission signal, 54 (S4)... Delay circuit output.
Claims (1)
て復調信号となし、再びこの復調信号で変調された送信
信号を送信して無線信号の中継を行なう中継無線送受信
機において、前記復調信号が送信機の立上り時点を完全
に経過してから送信機に供給されるように前記復調信号
に遅延を与える手段を備えて成ることを特徴とする中継
無線送受信機。 ２、前記遅延を与える手段をアナログ遅延ラインで形成
したことを特徴とする請求項１記載の中継無線送受信機
。[Claims] 1. A relay radio transceiver that receives a radio signal modulated with voice or data, converts it into a demodulated signal, and then transmits a transmission signal modulated with the demodulated signal again to relay the radio signal. A relay radio transmitter/receiver according to claim 1, further comprising means for delaying the demodulated signal so that the demodulated signal is supplied to the transmitter after the transmitter's rising time has completely passed. 2. The relay radio transmitter/receiver according to claim 1, wherein the means for providing the delay is formed by an analog delay line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2282254A JPH04156730A (en) | 1990-10-19 | 1990-10-19 | Repeating radio transmitter-receiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2282254A JPH04156730A (en) | 1990-10-19 | 1990-10-19 | Repeating radio transmitter-receiver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04156730A true JPH04156730A (en) | 1992-05-29 |
Family
ID=17650058
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2282254A Pending JPH04156730A (en) | 1990-10-19 | 1990-10-19 | Repeating radio transmitter-receiver |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04156730A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000039886A1 (en) * | 1998-12-25 | 2000-07-06 | Matsushita Electric Industrial Co., Ltd. | Antenna, radio device and radio repeater |
-
1990
- 1990-10-19 JP JP2282254A patent/JPH04156730A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000039886A1 (en) * | 1998-12-25 | 2000-07-06 | Matsushita Electric Industrial Co., Ltd. | Antenna, radio device and radio repeater |
| US6501436B1 (en) | 1998-12-25 | 2002-12-31 | Matsushita Electric Industrial Co., Ltd. | Antenna apparatus and wireless apparatus and radio relaying apparatus using the same |
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