KR100394815B1 - Multi-channel repeater - Google Patents

Abstract

The present invention relates to a multi-channel repeater for relaying communication with radios in different radio frequency periods in radio shadowed areas or radio wave weak areas when talking with radios at frequencies assigned to radios.

In the multi-channel repeater which enables communication in radio frequency periods having different frequencies in a radio wave shaded area or a radio wave weakened area, a plurality of radios M11 to M1n performing voice communication according to a first frequency F1, and the plurality of radios. Receives and demodulates the RF signals received from the radios M11 to M1n of the first to third dedicated lines, and outputs the audio signal received from one of the first to third dedicated lines to the first frequency F1. From the first repeater modulated to an RF signal and transmitted through the antenna, a plurality of radios (M21 to M2n) for performing voice communication in accordance with the second frequency (F2) and the plurality of radios (M21 to M2n) Receives and demodulates the received RF signal and outputs it to the first repeater through one dedicated line, modulates the voice signal received from the first repeater through the dedicated line into an RF signal of a second frequency (F2) and transmits the same through an antenna The second to say Constitute a group.

Description

Multichannel Repeater {MULTI-CHANNEL REPEATER}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-channel repeater, and more particularly, to a multi-channel repeater for communication in radio shading periods having different frequencies in radio shadowed areas or weak radio waves when talking with radios at frequencies allocated to radio periods.

In general, the radio is not a two-way call, but a two-way call (unable to send and receive at the same time) is divided into TRS / walkie-talkie for leisure / business / long-distance calls. TRS is an abbreviation of Trunked Radio System, which is called frequency public communication. It is a communication system in which many people share a small frequency and make calls in the form of radio, and there is no interference and low cost long distance voice call, wireless data, and location tracking (GPS). ) It is a complex wireless communication method that can receive additional services such as mobile phones.

These radios are unidirectional communication methods, so when the transmit / receive frequencies are different from each other, they should be communicated with the same frequency. By the way, in a shaded area such as a mountainous area or a high-rise building area where radio communication is not available, communication of these radios is often restricted and there is a problem that communication cannot be performed.

Accordingly, an object of the present invention is to provide a multi-channel repeater for relaying the radio frequency communication with different frequencies to solve this problem.

Another object of the present invention is to provide a multi-channel repeater for relaying communication in a shaded area or a region with weak radio waves.

1 is a connection diagram of a repeater for relaying multiple channels between radios according to an embodiment of the present invention;

2 is a detailed configuration diagram of each repeater of FIG. 1 according to an embodiment of the present invention;

3 is a detailed configuration diagram of the coupler 18 of FIG. 2 in accordance with an embodiment of the present invention.

* Explanation of symbols in the main part of the drawing *

10,20,30,40: first-fourth repeater 11,21,31,41: first-fourth transceiver

12,22,32,42: first to fourth RF receiver 13,23,33,43: first to fourth transmitter

14,24,34,44: first-fourth detector 15,25,35,45: first-fourth amplifier

16, 26, 36, 46: first-fourth hybrid circuit 17, 27, 37, 47: first-fourth detector

18: combiner

In the multi-channel repeater of the present invention for achieving the above object, from the plurality of radios (M11 to M1n) and the plurality of radios (M11 to M1n) for performing voice communication in accordance with the first frequency (F1) Receives and demodulates the received RF signal and outputs it through the first to third dedicated lines, modulates the voice signal received from one of the first to third dedicated lines into an RF signal of a first frequency F1, and transmits the same through an antenna. Receiving and demodulating the first repeater, the plurality of radios M21 to M2n performing voice communication in accordance with the second frequency F2, and the RF signals received from the plurality of radios M21 to M2n. And a second repeater for outputting the first repeater through a dedicated line and modulating a voice signal received from the first repeater through a dedicated line into an RF signal of a second frequency (F2) and transmitting the same through an antenna. It is done.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

1 is a connection diagram of a repeater for relaying multiple channels between radios according to an embodiment of the present invention.

A plurality of radios M11 to M1n that perform voice communication according to a first frequency F1 and RF signals received from the plurality of radios M11 to M1n are demodulated to receive first to third dedicated lines. Outputs through 61, 62, 63, modulates the voice signal received from the first to third dedicated lines (61, 62, 63) to an RF signal of the first frequency (F1) and transmits it through an antenna Receives and demodulates the first repeater 10, a plurality of radios M21 to M2n performing voice communication according to the second frequency F2, and RF signals received from the plurality of radios M21 to M2n. The first to third dedicated lines 61, 62, and 63, and output an audio signal received from the first dedicated line 61 connected to the first repeater 10 to an RF signal of a second frequency F2. A second repeater 20 modulated by the antenna and transmitted through an antenna, a plurality of radios M31 to M3n performing voice communication according to a third frequency F3, and the plurality of Receives and demodulates RF signals received from the radios M31 to M3n and outputs them through the first to third dedicated lines 61, 62, and 63, and the second dedicated line 62 connected to the first repeater 10. The third repeater 30 modulates the voice signal received from the RF signal of the third frequency (F3) and transmits it through the antenna, and a plurality of radios (M41) for performing voice communication in accordance with the fourth frequency (F4). M4n and RF signals received from the plurality of radios M41 to M4n are demodulated and output through the first to third dedicated lines 61, 62, and 63, and the first repeater 10. It consists of a fourth repeater 40 for modulating the voice signal received from the third dedicated line 63 connected through the RF signal of the fourth frequency (F4) to transmit through the antenna. The first repeater 10 is connected to the second to fourth repeaters 20, 30, and 40 by dedicated lines 61, 62, and 63, respectively.

2 is a detailed configuration diagram of each repeater of FIG. 1 according to an embodiment of the present invention.

The first repeater 10 includes a first transceiver 11, a first RF receiver 12, a first RF transmitter 13, a first detector 14, a first amplifier 15, and a first hybrid. The circuit 16, the 1st detector 17, and the combiner 18 are comprised.

The first transmit / receive switch 11 is constituted by a relay, and is connected to an antenna to select a transmission mode and a reception mode by a predetermined selection control signal. The first RF receiver 12 is connected to the first transceiver 11 and receives the RF signal of the first frequency (F1) band received through the first transceiver 11 and converts it into an intermediate frequency signal for output. do. The first detector 12 detects and outputs an audio signal from the intermediate frequency signal output from the first RF receiver 12. The first amplifier 15 amplifies and outputs the audio signal detected by the first detector 14 to a predetermined level. The hybrid coupler 18 is composed of three hybrid circuits composed of three winding transformers. The hybrid coupler 18 impedance-matches the voice signal input from the first amplifier 15 and outputs the same through the dedicated lines 61, 62, and 63. The impedance signal of the voice signal input from one of the dedicated lines 61, 62, and 63 is impedance-matched and output to the first RF transmitter 13 and the first detector 17. The first detector 17 detects a voice signal output from the first hybrid combiner 18 and selects a transmission mode by applying a control signal to the first transceiver 11 when the voice signal is detected. . The first RF transmitter 13 receives the transmitted audio signal output from the first hybrid combiner 18 and loads it on a carrier signal of a first frequency (F1) band and transmits it through the first transceiver 11 and an antenna. .

The second repeater 20 includes a second transceiver 21, a second RF receiver 22, a second RF transmitter 23, a second detector 24, a second amplifier 25, and a second hybrid circuit. And a second detector 27.

The second transmit / receive switch 21 is constituted by a relay, and is connected to an antenna to select a transmission mode and a reception mode by a predetermined selection control signal. The second RF receiver 22 is connected to the second transceiver 21 to receive the RF signal of the second frequency (F2) band received through the second transceiver 21 to convert to an intermediate frequency signal to output do. The second detector 22 detects and outputs an audio signal from the intermediate frequency signal output from the second RF receiver 22. The second amplifier 25 amplifies and outputs the audio signal detected by the second detector 24 to a predetermined level. The second hybrid circuit 26 is a three winding transformer so as not to interfere with each other between the transmission signal and the reception signal, and performs impedance matching on the signal received from the second amplifier 25 through the first dedicated line 61. The transmission signal input from the first dedicated line 61 is impedance-matched and output to the second RF transmitter 23 and the second detector 27. The second detector 27 detects a voice signal output from the second hybrid circuit 26 and selects a transmission mode by applying a control signal to the second transmission / reception switcher 21 when the voice signal is detected. . The second RF transmitter 23 receives the transmitted voice signal output from the second hybrid circuit 26 and loads the received voice signal on a carrier signal of a second frequency (F2) band and transmits the same through the second transceiver 21 and the antenna. .

The third repeater 30 includes a second transceiver 31, a third RF receiver 32, a third RF transmitter 33, a third detector 34, a third amplifier 35, and a third hybrid. The circuit 36 and the 3rd detector 37 are comprised.

The third transmit / receive switch 31 is constituted by a relay, and is connected to the antenna to select the transmission mode and the reception mode by a predetermined selection control signal. The third RF receiver 32 is connected to the third transmission / reception switcher 31 to receive an RF signal of a third frequency (F3) band received through the third transmission / reception switcher 31 and converts the signal into an intermediate frequency signal. do. The third detector 32 detects and outputs an audio signal from the intermediate frequency signal output from the third RF receiver 32. The third amplifier 35 amplifies and outputs the voice signal detected by the third detector 34 to a predetermined level. The third hybrid circuit 36 does not interfere with each other between the transmission signal and the reception signal by using a three winding transformer, and performs impedance matching on the signal received from the third amplifier 35 through the second dedicated line 62. The transmission signal input from the second dedicated line 62 is impedance-matched and output to the third RF transmitter 33 and the third detector 37. The third detector 37 detects a voice signal output from the third hybrid circuit 36 and selects a transmission mode by applying a control signal to the third transmit / receive converter 31 when the voice signal is detected. . The third RF transmitter 33 receives the transmission voice signal output from the third hybrid circuit 36 and loads the received audio signal on a carrier signal of a third frequency (F3) band and transmits the same through the third transceiver 31 and an antenna. .

The fourth repeater 40 includes a fourth transceiver 41, a fourth RF receiver 42, a fourth RF transmitter 43, a fourth detector 44, a fourth amplifier 45, and a fourth hybrid. The circuit 46 and the 4th detector 47 are comprised.

The fourth transmit / receive switch 41 is constituted by a relay, and is connected to the antenna to select the transmission mode and the reception mode by a predetermined selection control signal. The fourth RF receiver 42 is connected to the fourth transmission / reception switcher 41 to receive an RF signal of a fourth frequency (F4) band received through the fourth transmission / reception switcher 41 and converts the RF signal into an intermediate frequency signal. do. The fourth detector 42 detects and outputs an audio signal from the intermediate frequency signal output from the fourth RF receiver 42. The fourth amplifier 45 amplifies and outputs the audio signal detected by the fourth detector 44 to a predetermined level. The fourth hybrid circuit 46 separates the transmission and reception signals so as not to interfere with each other between the transmission signal and the reception signal by using a three winding transformer, and performs impedance matching on the signals received from the fourth amplifier 45 to perform a third dedicated line ( 63), and the transmission signal input from the third dedicated line 63 is impedance-matched and output to the fourth RF transmitter 43 and the fourth detector 47. The fourth detector 47 detects a voice signal output from the fourth hybrid circuit 46 and selects a transmission mode by applying a control signal to the fourth transmission / reception switcher 41 when the voice signal is detected. . The fourth RF transmitter 43 receives the transmitted voice signal output from the fourth hybrid circuit 46 and loads the received voice signal on the carrier signal of the fourth frequency (F4) band and transmits it through the fourth transceiver 41 and the antenna. .

3 is a detailed configuration diagram of the hybrid coupler 18 of FIG. 2 according to an embodiment of the present invention.

Three hybrid circuits 51, 52, and 53 are configured to perform impedance matching on the audio signal output from the first amplifier 15 to output to the first to third dedicated lines 61, 62, and 63, respectively. The voice signals inputted from the first to third dedicated lines 61, 62, and 63 are impedance-matched and output to the first RF transmitter 13 and the first detector 17.

1 to 2, the operation of the preferred embodiment of the present invention will be described in detail.

First, when communicating between the first radio M11 and the first radio M1n, the frequency of the first radio M11 and the first radio M1n is set to the first frequency F1 to perform one-way communication. At this time, when the communication is interrupted due to the interference between the first radio M11 and the first radio M1n by an obstacle, communication between the first radios having different frequencies and the second to fourth radios is possible. do.

For example, the first radio (M11) to the first frequency (F1), the second radio (M21) to the second frequency (F2), the third radio (M31) to the third frequency (F3), the fourth Referring to the operation of the one-way communication in the radio period with a different frequency while the radio (M41) is set to the fourth frequency (F4) as follows.

The RF signal transmitted from the first transceiver M11 is applied to the first transceiver 11 via an antenna. The first transmit / receive converter 11 connects the terminal c and the terminal b to select a reception mode while the power switch is turned on. As a result, the RF signal through the first transceiver 11 is applied to the first RF receiver 12. At this time, the first RF receiver 12 receives the RF signal of the first frequency (F1) band received through the first transceiver 11, converts the RF signal into an intermediate frequency signal, and outputs it to the first detector 14. The first detector 14 detects an audio signal from the intermediate frequency signal output from the first RF receiver 12 and outputs the voice signal to the first amplifier 15. The first amplifier 15 amplifies the voice signal detected by the first detector 14 to a predetermined level and outputs the amplified voice signal to the hybrid combiner 18. The hybrid combiner 18 impedance-matches the voice signal amplified by the first amplifier 15 to the second through fourth repeaters 20 and 30 through the first through third dedicated lines 61, 62, and 63. , 40 to the second to fourth hybrid circuits 26, 36 and 46, respectively. The second to fourth hybrid circuits 26, 36, and 46 separate the voice signals received through the first to third dedicated lines 61, 62, and 63 to separate the second to fourth RF transmitters 23 and 33. , 43) respectively. In this case, the second to fourth detectors 27, 37, and 47 detect the transmission voice signals output from the second to fourth hybrid circuits 26, 36, and 46, and when the voice signals are detected, the second to fourth detectors 27, 37, and 47 detect the transmission signals. The control signal is applied to the fourth transmission / reception switches 21, 31, and 41 to select a transmission mode. Then, the second to fourth transceivers 21, 31, and 41 connect the terminal c to the terminal a. In this case, the second to fourth RF transmitters 23, 33, and 43 receive the transmission voice signals output from the second to fourth hybrid circuits 26, 36, and 46, and then, for example, the second to fourth frequencies F2, F3, F4) is transmitted to the carrier signal of the band and transmitted through the second to fourth transceivers 21, 31, and 41 and the antenna. Then, RF signals transmitted through the second to fourth transceivers 21, 31, and 41 and the antennas are received by the plurality of second to fourth radios M21 to M2n, M31 to M3n, and M41 to M4n, respectively.

On the other hand, for example, the RF signal transmitted from the second transceiver M21 is applied to the second transceiver 21 via an antenna. The second transmit / receive converter 21 connects the terminal c and the terminal b to select a reception mode while the power switch is turned on. As a result, the RF signal through the second transceiver 21 is applied to the second RF receiver 22. In this case, the second RF receiver 22 receives the RF signal of the second frequency (F2) band received through the second transceiver 21 and converts the RF signal into an intermediate frequency signal and outputs the RF signal to the second detector 24. The second detector 24 detects an audio signal from the intermediate frequency signal output from the second RF receiver 22 and outputs the voice signal to the second amplifier 25. The second amplifier 25 amplifies the voice signal detected by the second detector 24 to a predetermined level and outputs the audio signal to the second hybrid circuit 26. The second hybrid circuit 26 separates the voice signal amplified from the second amplifier 25 and outputs the audio signal to the hybrid combiner 18 of the first repeater 10 through the first dedicated line 61. The hybrid coupler 18 impedance-matches the voice signal input through the first dedicated line 61 and outputs the impedance signal to the first RF transmitter 13 and the first detector 17, respectively. At this time, the first detector 17 detects a transmission voice signal output from the hybrid coupler 18 and selects a transmission mode by applying a control signal to the first transmission / reception switcher 11 when the voice signal is detected. . Then, the first transceiver 11 connects the terminal (c) and the terminal (a). At this time, the first RF transmitter 13 receives the transmission voice signal output from the hybrid combiner 18 and loads it on the carrier signal of the first frequency (F1) band and transmits it through the first transceiver 11 and the antenna. The RF signals of the second frequency band transmitted through the first transceiver 11 and the antenna may be received by the plurality of first radios M11 to M1n. In this way, it is possible to communicate using a repeater during radio periods with different frequencies.

In this manner, even when transmitting from the third radios M31 to M3n or the fourth radios M41 to M4n, the first repeater 10, the third repeater 30, and the fourth repeater 40 are operated in the same manner as described above. It can be relayed through and communicate with the first radios M11 to M1n.

As described above, the first and second repeaters 10 and 20 are used for communication between the first radio M11 and the second radio M21, and the communication between the first radio M11 and the third radio M31. The first and third repeaters 10 and 30 are used for communication, and the first and fourth repeaters 10 and 40 are used for communication between the first and fourth radios M11 and M41.

As described above, the present invention connects a dedicated line in a relay period using different frequencies and connects radios having different frequencies to the repeater so that communication in a wide range of areas is possible, and shadows that are not wirelessly communicated. Even in the area of radio, communication is possible, so even if you do not communicate with a specific radio to communicate through another radio has the advantage of preventing communication failure.

Claims (7)

(delete) (Correct) multi-channel repeater, A plurality of radios M11 to M1n for performing voice communication according to the first frequency F1, Receives and demodulates RF signals received from the plurality of radios M11 to M1n and outputs them through first to third dedicated lines, and outputs a voice signal received from one of the first to third dedicated lines to a first frequency F1. A first repeater for modulating an RF signal and transmitting through an antenna; A plurality of radios M21 to M2n performing voice communication in accordance with the second frequency F2; Receives and demodulates RF signals received from the plurality of radios M21 to M2n and outputs the demodulated signals to the first repeater through the first dedicated line, and outputs the voice signals received from the first repeater through the first dedicated line. A second repeater which modulates the RF signal of two frequencies (F2) and transmits the same through an antenna; A plurality of radios M31 to M3n for performing voice communication according to the third frequency F3, Receives and demodulates an RF signal received from one of the plurality of radios M31 to M3n and outputs the demodulated signal to the first repeater through the second dedicated line, and receives the voice signal received from the first repeater through the second dedicated line. A third repeater for modulating the signal into an RF signal of a third frequency (F3) and transmitting it through an antenna The method of claim 1, The first repeater receives a voice signal transmitted through the second repeater and the first dedicated line from one of the plurality of radios M21 to M2n and transmits it to the plurality of radios M11 to M1n. Multi-channel repeater characterized in that The method of claim 1, The second repeater receives a voice signal transmitted through the first repeater and the first dedicated line from one of the plurality of radios M11 to M1n and transmits it to the plurality of radios M21 to M2n. Multi-channel repeater characterized in that. The method of claim 1, wherein the first repeater, A first transmission / reception switch connected to the antenna for selecting a transmission mode and a reception mode by a predetermined selection control signal; A first RF receiver for receiving an RF signal of a first frequency (F1) band received through the first transceiver and converting the RF signal into an intermediate frequency signal; A first detector for detecting and outputting a voice signal from the intermediate frequency signal output from the first RF receiver; A first amplifier for amplifying and outputting the voice signal detected by the first detector to a predetermined level; Transmitting and receiving signals are separated so as not to interfere with each other between the transmission signal and the reception signal, and the signals output from the first amplifier are output through the first to third dedicated lines by performing impedance matching, and through the first to third dedicated lines. A hybrid combiner for impedance matching a voice signal input through the first RF transmitter / receiver and outputting the first signal to the first detector; A first detector for detecting a voice signal output from the hybrid combiner and selecting a transmission mode by applying a control signal to the first transceiving switch when the voice signal is detected; And a first RF transmitter configured to receive a transmission voice signal output from the hybrid combiner and to carry the carrier signal in a first frequency (F1) band and transmit the signal through the first transceiver and the antenna. The method of claim 5, wherein the second repeater, A second transmission / reception switch connected to the antenna for selecting a transmission mode and a reception mode by a predetermined selection control signal; A second RF receiver for receiving an RF signal of a second frequency band (F2) received through the second transceiver and converting the RF signal into an intermediate frequency signal; A second detector for detecting and outputting a voice signal from the intermediate frequency signal output from the second RF receiver; A second amplifier for amplifying and outputting the voice signal detected by the second detector to a predetermined level; Separates the transmission and reception signals so as not to interfere with each other between the transmission signal and the reception signal, outputs a signal received from the second amplifier through a second dedicated line, and transmits the transmission signal input from the first dedicated line to the second RF transmitter and A second hybrid circuit outputted to a second detector, A second detector for detecting a voice signal output from the second hybrid circuit and applying a control signal to the second transceiver to select a transmission mode when the voice signal is detected; And a second RF transmitter configured to receive the transmitted voice signal output from the second hybrid circuit and to transmit the received voice signal on a carrier signal of a second frequency (F2) band through the second transceiver and the antenna. Repeater. The method of claim 2, wherein the third repeater, A third transmission / reception switch connected to the antenna for selecting a transmission mode and a reception mode by a predetermined selection control signal; A third RF receiver for receiving an RF signal of a third frequency (F3) band received through the third transceiver and converting the RF signal into an intermediate frequency signal; A third detector for detecting and outputting an audio signal from the intermediate frequency signal output from the third RF receiver; A third amplifier for amplifying and outputting the voice signal detected by the third detector to a predetermined level; Transmitting and receiving signals are separated so as not to interfere with each other between the transmission signal and the reception signal, the signal received from the third amplifier is output through a second dedicated line, and the transmission signal input from the second dedicated line is transmitted to the third RF transmitter. A third hybrid circuit outputted to a third detector, A third detector for detecting a voice signal output from the third hybrid circuit and applying a control signal to the third transceiver to select a transmission mode when the voice signal is detected; And a third RF transmitter configured to receive the transmitted voice signal output from the third hybrid circuit and to transmit the received voice signal to a carrier signal of a third frequency (F3) band and transmit it through the third transceiver and the antenna. Repeater.