KR200397780Y1 - TDD system by using high power RF switch - Google Patents

Abstract

The present invention relates to a communication system, and more particularly, it is used in the lines of RF and microwave systems to turn on / off a high frequency signal by the operation of a switching element, provided with at least one switching element and at both ends thereof. A high power switch capable of switching a high power high frequency signal by having a coupler and a terminating resistor connected thereto, and a time division communication system using the same.

The switch according to the prior art, which is usually implemented by connecting pin diodes in series or in parallel, is a reflective switch, which performs a signal on / off function, but has a fatal effect not only on the switch but also on an end device when an unintended unwanted signal is introduced. In addition, there is another problem that the high power signal cannot be turned on and off and the separation characteristic between the lines is poor due to the limitations of the low power device itself at the time of switching.

The present invention is to solve the problems of the prior art as described above, the transmission and reception path of the time division communication system by switching a high power high frequency signal having at least one switching element and having a coupler and a terminating resistor connected to each end thereof; It is to improve liver separation.

Description

Time division communication system using a high power switch {TDD system by using high power RF switch}

The present invention relates to a communication system, and more particularly, it is used in a line of a radio frequency (RF) and a microwave (microwave) system to turn on / off a high frequency signal by operation of a switching element, The present invention relates to a high power switch capable of switching high power high frequency signals by providing one or more couplers and termination resistors connected to both ends thereof, and a time division communication system using the same.

High frequency switches, which are typically used for the on / off function of RF and microwave signals, include high power mechanical switches and high frequency monolithic integrated circuits (MMIC) that turn coaxial lines on and off by magnetized solenoids. It is divided into a low power electronic switch for turning on / off a line by a device such as a field effect transistor (FET) or a pin diode.

In an electronic switch according to the related art, which is generally implemented by connecting pin diodes in series or in parallel, when a forward bias is applied to the pin diode D1 from the bias terminal, the pin diode becomes low impedance and the line is turned on. ON), the high frequency signal input to the input terminal 101 is transmitted to the output terminal (102). On the contrary, when the reverse bias is applied to the pin diode, the pin diode becomes high impedance and the line is turned off, so that the high frequency signal input to the input terminal 101 is blocked and not transmitted to the output terminal 102. .

However, the electronic switch according to the prior art as shown in FIG. 1 is a reflective switch that performs a signal on / off function, but when an unintended unwanted signal or the like is introduced, it has a fatal effect on not only the switch but also the rear equipment. In addition, there is another problem that the high power signal cannot be turned on and off and the separation characteristic between the lines is poor due to the limitations of the low power device itself at the time of switching.

The present invention is to solve the problems of the prior art as described above, the transmission and reception path of the time division communication system by switching a high power high frequency signal having at least one switching element and having a coupler and a terminating resistor connected to each end thereof; It is a technical problem to improve liver separation.

Time division communication system using a high power switch to solve the above technical problem, the antenna 201 for receiving a downlink high frequency signal from a base station or a communication system and transmits an uplink high frequency signal to the base station or a communication system; And a band pass filter 202 for passing only a required band among downlink / uplink high frequency signals received or transmitted by the antenna; and a circulator 203 connected to the band pass filter to pass a high frequency signal in only one direction. And a receiving end switching unit 204 configured to turn on / off a downlink high frequency signal output from the circulator, and receiving a downlink high frequency signal output from the receiving end switching unit to suppress noise and to reduce noise. A low noise amplifier 205 which amplifies to a gain; and an uplink high frequency signal A power amplifier 206 for amplifying and outputting a predetermined gain; and an input port to which an uplink high-frequency signal from the power amplifier is input, and first and second output ports respectively outputted by dividing the power by a predetermined ratio. And an uplink high frequency signal inputted to the input port, the power being divided by a predetermined ratio and outputted to the first output port and the second output port, respectively. A first coupler 207 for outputting the unnecessary signal to the isolation port and extinguishing it; and at least one switch for transmitting / transmitting an uplink high frequency signal output from the first output port of the first coupler. And a switching unit 209 and at least one switch to output an uplink high frequency signal output from the second output port of the first coupler. A second end switching unit 210 for turning on / off; a first terminal resistor 208 connected to an isolation port of the first coupler 207 to dissipate reverse power and unnecessary signals; and the first end switching unit The first and second input ports to which the uplink high frequency signal from the transmitter and the uplink high frequency signal from the transmitter second switching unit are respectively input, the output port to which the power is added and outputted, and the second termination resistor 212 is connected. A second coupler configured to include an uplink high frequency signal input to the first and second input ports, respectively, to be output to the circulator through the output port, and to output the reverse power and unnecessary signals to the isolation port to be extinguished. 211); A second termination resistor 212 connected to an isolation port of the second coupler 211 to dissipate reverse power and unnecessary signals; And a switch control circuit 213 for controlling on / off of switches provided in the receiving end switching unit, the transmitting end first switching unit, and the transmitting end second switching unit.

Hereinafter, a preferred embodiment of a time division communication system using a high power switch according to the present invention will be described in detail with reference to the accompanying drawings. In the following description, the same or corresponding members will be denoted by the same reference numerals and detailed description thereof will be omitted.

2 is a block diagram of an embodiment of a time division communication system using a high power switch according to the present invention. As shown, the time division communication system according to the present invention passes only the required band among the base station or the communication system and the antenna 201 for receiving and transmitting downlink and uplink high frequency signals, and the high frequency signals received or transmitted with the antenna. A band pass filter 202 configured to connect to the band pass filter, a circulator 203 for passing a high frequency signal in only one direction, and at least one switch to output a downlink high frequency signal output from the circulator. A receiver switching unit 204 for turning on / off, a low noise amplifier 205 for suppressing noise and amplifying a predetermined gain with a downlink high frequency signal output from the receiver switching unit, and amplifying an uplink high frequency signal with a predetermined gain And an uplink high frequency signal inputted from the power amplifier The power is divided into a predetermined ratio and output to the first output port and the second output port, respectively, and the first coupler 207 for outputting the reverse power and unnecessary signals to the isolation port to be extinguished, and at least one switch A first stage switching unit 209 for turning on / off an uplink high frequency signal output from the first output port of the first coupler, and at least one switch to be output from the second output port of the first coupler Transmitter second switching unit 210 for turning on / off the uplink high frequency signal, and uplink high frequency signals from the transmitter first switching unit and the transmitter second switching unit are respectively input to the first and second input ports. Power is added to the second coupler 211 for outputting to the circulator through the output port and the isolation port of the first and second coupler, respectively It consists of a first and a second termination resistor (208, 212) and a switch control circuit 213 that controls the receiver switching unit, the transmitting end a first switching unit, O / OFF of the switch provided on the unit transmitting side second switching.

The bandpass filter 202 functions to pass only a required band among high frequency signals input thereto, and is generally designed to obtain desired attenuation characteristics by being composed of a plurality of coaxial resonators or dielectric resonators. In the embodiment of the present invention, since the frequency of the downlink (RX) signal from the base station or the communication system and the uplink (TX) signal to the base station or the communication system is the same time division method, only one bandpass filter is used.

The circulator 203 is composed of three asymmetric terminals A, B, and C to pass a high frequency signal in only one direction, and the downlink high frequency signal input to the terminal A as shown in FIG. Is transmitted only to the terminal B adjacent thereto in the direction of the arrow and not to the terminal C. In addition, the uplink high frequency signal input to the terminal C is transmitted only to the terminal A adjacent thereto in the direction of the arrow and not to the terminal B.

The receiving end switching unit 204 is composed of at least one switch to function to turn on / off the downlink high frequency signal output from the circulator. In an embodiment of the present invention, the receiving end first to third switches 204 -1, 204-2, 204-3). The first to third switches of the receiver are configured as a high power switching device as shown in FIG.

The low noise amplifier 205 and the power amplifier 206 each receive a downlink high frequency signal output from the receiver switching unit to suppress noise, amplify with a predetermined gain, and amplify the uplink high frequency signal with a predetermined gain to output the function. As will be described in the present invention will be omitted.

The first coupler 207 functions to divide and output the power of the uplink high frequency signal input from the power amplifier by a predetermined ratio, and is an input port (IN) through which the uplink high frequency signal from the power amplifier is input. ), And the first and second output ports OUT1 and OUT2 to which the power is divided and output at a predetermined ratio, and the isolation port ISO to which the first terminal resistor 208 is connected. By such a configuration, the uplink high frequency signal inputted to the input port is divided into a predetermined ratio and output to the first output port and the second output port, respectively, and the reverse power or unnecessary signal is output to the isolation port and It is extinguished by the connected first termination resistor 208.

The transmitting end first switching unit 209 and the transmitting end second switching unit 210 each include at least one switch to turn on the uplink high frequency signals output from the first and second output ports of the first coupler, respectively. In the embodiment of the present invention as a function of turning on / off, the first to fourth switches 209-1, 209-2, 210-1, and 210-2 are used. The first to fourth switches of the transmitting end are configured as a high power switching element as shown in FIG.

The second coupler 211 performs a function of synthesizing and outputting uplink high frequency signals from the first stage switching unit and the second stage switching unit, and the uplink high frequency signals from the first stage switching unit are input. A first input port IN1, a second input port IN2 to which an uplink high frequency signal from the second switching unit of the transmission terminal is input, an output port OUT to which the power is synthesized, and a second termination resistor ( 212 is an isolation port (ISO) to which it is connected. With this configuration, the uplink high frequency signals inputted to the first input port and the second input port are respectively synthesized and output to the output port, and the reverse power or unnecessary signal is output to the isolation port and connected to the second termination resistor. Destroyed by 212. The uplink high frequency signal output to the output port is input to the circulator and transmitted through the antenna through a band pass filter.

In this case, the first coupler 207 and the second coupler 211 are the same and are connected to be opposite to both ends of the transmitting end first switching unit 209 and the transmitting end second switching unit 210, respectively, the corresponding first coupler The first output port OUT1 of 207 and the first input port IN1 of the second coupler 211, and the second output port OUT2 and the second coupler 211 of the first coupler 207. The second input port IN2 is configured such that the distribution ratio is the same, that is, when the ratio of the power divided into the first output port and the second output port of the first coupler 207 is 1: 1.5, the second coupler 211 is provided. The ratio of the power input to the first input port and the second input port is equal to 1: 1.5 In the embodiment of the present invention, the power input to the input port of the first coupler 207 is divided by half. An output 3dB coupler was used and the second coupler 211 used the same method, but is not limited thereto.

In addition, the receiving end first to third switches 204-1, 204-2, and 204-3 and the transmitting end first to fourth switches 209-1, 209-2, 210-1, and 210-2 will be described later. As shown in FIG. 3, the high frequency signal is turned on / off by a bias signal applied thereto, and the present invention uses at least one switching element as shown in FIG. It becomes possible. In this case, the interlocking of the switches is controlled such that the receiving end first to third switches and the transmitting end first to fourth switches are turned on / off in opposite directions. That is, when the first to third switches of the receiver are ON, the first to fourth switches of the transmitter are OFF. When the first to third switches of the receiver are OFF, the first to third switches of the receiver are OFF. The fourth switch is turned ON.

3 is a detailed block diagram of a high power switch according to the present invention, Figure 4 is a view showing the operation of the coupler of the high power switch according to the present invention. First, in FIG. 3, the uplink high frequency signal inputted to the input port IN of the first coupler 207 is divided in a predetermined ratio so that the first and second output ports OUT1 and OUT2 of the first coupler are divided. Is output. The uplink high frequency signals outputted to these first and second output ports are respectively applied to the transmitting end first switching unit 209 and the transmitting end second switching unit 210, wherein the transmitting end first switching unit 209 is a transmitting end. The first to second switches 209-1 and 209-2 are configured, and the second stage switching unit 210 is configured to be the third to fourth switches 210-1 and 210-2. The first to fourth switches of the transmitting stage all perform the same operation by the same configuration, and the switching elements D1 and D2 are turned on or off by the bias signal applied to the bias terminal. Connect or block

The bias signal as described above is applied by a control signal from the switch control circuit 213 of FIG. 2, which is performed by a memory device programmed at a predetermined time interval or by an operator of a communication system by connecting to an external device. Can be controlled arbitrarily. In addition, the present invention shows that two switches are used for each path as an embodiment, but the present invention is not limited thereto, and a larger number of switches can be used to improve isolation or to switch signals of higher power. May be used.

The uplink high-frequency signals passing through the first and second transmitters 209 and 210 are input to the first and second input ports IN1 and IN2 of the second coupler 211, respectively, to be synthesized. It is then output to the output port (OUT). That is, the first coupler and the second coupler have the same structure and are used symmetrically so that the input / output ports are reversed, and the signals are divided and switched by the first coupler at a predetermined ratio and the divided signals are switched by the second coupler. The output is synthesized.

These first and second couplers are designed to divide a high frequency signal input to the input port IN at a predetermined ratio. In FIG. As shown, 1/2 of the input power is output to the first output port OUT1, which is the main line, and the other half of the power is output to the second output port OUT2, which is the coupling line. . For example, when 1 mW (0 dBm) of power is input to the input port, 0.5 mW (-3 dBm) of power is output to the first output port and the second output port, respectively. As described above, the present invention divides a relatively high power uplink (TX) high frequency signal by dividing the signal power by a predetermined ratio by the first coupler, thereby lowering the power applied to the device during the switching operation, and thus, the second coupler. By the divided power is added back to the original power can be minimized the power loss. In addition, although the embodiment of the present invention shows that the first and second couplers are used only for the uplink path, which requires a relatively high power, the above configuration may be equally used for the downlink path as necessary.

5 is a block diagram illustrating a reception path of a time division communication system using a high power switch according to the present invention. As described above, when the communication system according to the present invention is in the receive (RX) state, a bias signal is applied to the switching elements of the first to third switches 204-1, 204-2, and 204-3. When the switch is turned on, the switching elements are conducted so that the downlink high frequency signal is output through a predetermined path. That is, in FIG. 5, the downlink high frequency signal received by the antenna 201 is filtered by only the band pass filter 202 and passes only in one direction by the circulator 203 to pass the receiver switching unit 204. The low noise amplifier 205 is transmitted to the low noise amplifier 205. At this time, the transmitting end first switching unit 209 and the transmitting end second switching unit 210 are in an OFF state.

6 is a block diagram illustrating a transmission path of a time division communication system using a high power switch according to the present invention. As shown in FIG. 5, when the communication system according to the present invention is in a transmission (TX) state, bias is applied to switching elements of the first to fourth switches 209-1, 209-2, 210-1, and 210-2. When a signal is applied and the switch is turned on, the switching elements are turned on so that an uplink high frequency signal is output through a predetermined path. That is, after the uplink high frequency signal amplified by the power amplifier 206 in FIG. 6 is divided by the first coupler 207 at a predetermined ratio, the transmitter first switch 209 and the transmitter second switch 210, respectively. Through the second coupler 211 is synthesized through the circulator 203 is passed only in one direction is passed to the bandpass filter 202. At this time, the receiving end switching unit 204 is in an OFF state.

FIG. 7 is a block diagram showing another embodiment of a time division communication system using a high power switch according to the present invention. In order to further improve the separation between transmission and reception paths, a second circulator 203-1 is added to double the circulators. It is placed. That is, the downlink high frequency signal inputted to the terminal A of the circulator 203 by connecting the terminal D of the second circulator 203-1 to the terminal B of the circulator 203 of FIG. Therefore, it is transmitted only to the terminal E via the terminal B adjacent to it and the terminal D of the second circulator 203-1. In addition, the uplink high frequency signal input to the terminal C of the circulator 203 is transmitted only to the terminal A adjacent to it in the direction of the arrow, in particular the reflected wave flowing through the terminal E of the second circulator 203-1 or The unnecessary signal is extinguished by the third terminal resistor 203-2 connected thereto via the terminal F.

Although the present invention has been illustrated and described with respect to the preferred embodiments, the present invention is not limited to the above embodiments, and various modifications can be made by those skilled in the art without departing from the technical spirit of the present invention. have.

According to the present invention as described above, it has an effect of improving the separation between the transmission and reception paths of the time division communication system by switching a high-power high-frequency signal having at least one switching element and having a coupler and a terminating resistor connected to both ends thereof, respectively. .

1 is a circuit diagram of a switch using a pin diode according to the prior art.

2 is a block diagram of an embodiment of a time division communication system using a high power switch according to the present invention;

3 is a detailed block diagram of a high power switch according to the present invention.

4 is a view showing the operation of the coupler of the high power switch according to the present invention.

5 is a block diagram illustrating a reception path of a time division communication system using a high power switch according to the present invention.

6 is a block diagram illustrating a transmission path of a time division communication system using a high power switch according to the present invention.

7 is a block diagram illustrating another embodiment of a time division communication system using a high power switch according to the present invention.

※ Explanation of code for main part of drawing

101. Input terminal 102. Output terminal

201.Antenna 202. Bandpass Filter

203. Circulator 203-1. 2nd circulator

203-2. Third terminating resistor 204. Receiver switching unit

204-1, 204-2, 204-3. Receive end first to third switch

205. Low Noise Amplifier 206. Power Amplifier

207. First coupler 208. First terminating resistor

209. Transmitter first switch 210. Transmitter second switch

209-1, 209-2, 210-1, 210-2. Transmitter first to fourth switch

211. Second Coupler 212. Second Termination Resistor

213. Switch control circuit

Claims (13)

In a communication system for transmitting and receiving high frequency signals, An antenna for receiving a downlink high frequency signal from a base station or communication system and transmitting an uplink high frequency signal to the base station or communication system; A bandpass filter for passing only a required band among the high frequency signals received or transmitted by the antenna; A circulator connected to the band pass filter and configured to pass a high frequency signal in only one direction; A receiving end switching unit configured to include at least one switch to turn on / off a downlink high frequency signal output from the circulator, but operate in reverse with the transmitting end switching units; A low noise amplifier receiving a downlink high frequency signal output from the receiver switching unit to suppress noise and amplify the signal with a predetermined gain; A power amplifier for amplifying and outputting the uplink high frequency signal with a predetermined gain; An input port to which an uplink high frequency signal from the power amplifier is input, first and second output ports each of which is divided and output at a predetermined ratio, and an isolation port to which a first termination resistor is connected; A first coupler configured to divide the uplink high frequency signal inputted into the first output port and the second output port into a predetermined ratio, and output the reverse power and unnecessary signals to the isolation port; A transmitting end first switching unit configured to include at least one switch to turn on / off an uplink high frequency signal output from the first output port of the first coupler, and to operate in reverse with the receiving end switching unit; A transmitting end second switching unit configured to include at least one switch to turn on / off an uplink high frequency signal output from the second output port of the first coupler, and to operate in reverse with the receiving end switching unit; A first termination resistor connected to the isolation port of the first coupler to dissipate reverse power and unwanted signals; First and second input ports to which an uplink high frequency signal from the first stage switching unit and an uplink high frequency signal from the second stage switching unit are respectively input, an output port to which the power is added, and a second termination resistor An uplink high-frequency signal input to the first and second input ports, respectively, to be added to the circulator through the output port, and the reverse power and unnecessary signals are output to the isolation port to be extinguished. 2 couplers; A second termination resistor connected to the isolation port of the second coupler to dissipate reverse power and unwanted signals; And And a switch control circuit for controlling on / off of switches provided in the receiving end switching unit, the transmitting end first switching unit, and the transmitting end second switching unit. In a communication system for transmitting and receiving high frequency signals, An antenna for receiving a downlink high frequency signal from a base station or communication system and transmitting an uplink high frequency signal to the base station or communication system; A bandpass filter for passing only a required band among the high frequency signals received or transmitted by the antenna; A circulator, which is provided with at least one and is connected to the band pass filter to pass a high frequency signal in only one direction; A receiving end switching unit configured to include at least one switch to turn on / off a downlink high frequency signal output from the circulator, but operate in reverse with the transmitting end switching units; A low noise amplifier receiving a downlink high frequency signal output from the receiver switching unit to suppress noise and amplify the signal with a predetermined gain; A power amplifier for amplifying and outputting the uplink high frequency signal with a predetermined gain; An input port to which an uplink high frequency signal from the power amplifier is input, first and second output ports each of which is divided and output at a predetermined ratio, and an isolation port to which a first termination resistor is connected; A first coupler configured to divide the uplink high frequency signal inputted into the first output port and the second output port into a predetermined ratio, and output the reverse power and unnecessary signals to the isolation port; A transmitting end first switching unit configured to include at least one switch to turn on / off an uplink high frequency signal output from the first output port of the first coupler, and to operate in reverse with the receiving end switching unit; A transmitting end second switching unit configured to include at least one switch to turn on / off an uplink high frequency signal output from the second output port of the first coupler, and to operate in reverse with the receiving end switching unit; A first termination resistor connected to the isolation port of the first coupler to dissipate reverse power and unwanted signals; First and second input ports to which an uplink high frequency signal from the first stage switching unit and an uplink high frequency signal from the second stage switching unit are respectively input, an output port to which the power is added, and a second termination resistor An uplink high-frequency signal input to the first and second input ports, respectively, to be added to the circulator through the output port, and the reverse power and unnecessary signals are output to the isolation port to be extinguished. 2 couplers; A second termination resistor connected to the isolation port of the second coupler to dissipate reverse power and unwanted signals; And And a switch control circuit for controlling on / off of switches provided in the receiving end switching unit, the transmitting end first switching unit, and the transmitting end second switching unit. In a communication system for transmitting and receiving high frequency signals, A circulator for passing downlink high frequency signals from a base station or communication system and uplink high frequency signals to the base station or communication system in only one direction; A receiver switching unit configured to include at least one switch to turn on / off a downlink high frequency signal output from the circulator, and to operate in reverse with the transmitter switching units; An uplink inputted to the input port, comprising an input port to which an uplink high frequency signal is input, a first and second output port to which power is divided and output at a predetermined ratio, and an isolation port to which a first termination resistor is connected A first coupler for causing the high frequency signal to be divided in a predetermined ratio and outputted to the first output port and the second output port, and outputting the reverse power and unnecessary signals to the isolation port; A transmitting end first switching unit configured to include at least one switch to turn on / off an uplink high frequency signal output from the first output port of the first coupler, and to operate in reverse with the receiving end switching unit; A transmitting end second switching unit configured to include at least one switch to turn on / off an uplink high frequency signal output from the second output port of the first coupler, and to operate in reverse with the receiving end switching unit; A first termination resistor connected to the isolation port of the first coupler to dissipate reverse power and unwanted signals; First and second input ports to which an uplink high frequency signal from the first stage switching unit and an uplink high frequency signal from the second stage switching unit are respectively input, an output port to which the power is added, and a second termination resistor An uplink high-frequency signal input to the first and second input ports, respectively, to be added to the circulator through the output port, and the reverse power and unnecessary signals are output to the isolation port to be extinguished. 2 couplers; A second termination resistor connected to the isolation port of the second coupler to dissipate reverse power and unwanted signals; And And a switch control circuit for controlling on / off of switches provided in the receiving end switching unit, the transmitting end first switching unit, and the transmitting end second switching unit. The method of claim 1, wherein the receiving end switching unit, Time division communication system using a high-power switch consisting of at least one switch and receiving a control signal from the switch control circuit to turn on / off a downlink high-frequency signal to operate in reverse with the transmitter switching unit. The method according to any one of claims 1, 2 and 3, The switches provided in the receiving end switching unit and the transmitting end first and second switching units receive a control signal from the switch control circuit and interlock with each other. And the switches of the receiver switching unit and the switches of the transmitter first and second switching units are turned on / off in reverse. In a communication system for transmitting and receiving high frequency signals, It consists of an input port to which a high frequency signal is input, first and second output ports each of which is divided and outputted at a predetermined ratio, and an isolation port to which a first termination resistor is connected, and an uplink high frequency signal input to the input port. A first coupler whose power is divided at a predetermined rate and output to the first output port and the second output port, respectively, and the reverse power and unnecessary signals are output to the isolation port and then extinguished; A transmitting end first switching unit configured to include at least one switch to turn on / off an uplink high frequency signal output from the first output port of the first coupler, and to operate in reverse with the receiving end switching unit; A transmitting end second switching unit configured to include at least one switch to turn on / off an uplink high frequency signal output from the second output port of the first coupler, and to operate in reverse with the receiving end switching unit; A first termination resistor connected to the isolation port of the first coupler to dissipate reverse power and unwanted signals; First and second input ports to which an uplink high frequency signal from the first stage switching unit and an uplink high frequency signal from the second stage switching unit are respectively input, an output port to which the power is added, and a second termination resistor An uplink high-frequency signal input to the first and second input ports, respectively, to be added to the circulator through the output port, and the reverse power and unnecessary signals are output to the isolation port to be extinguished. 2 couplers; A second termination resistor connected to the isolation port of the second coupler to dissipate reverse power and unwanted signals; And And a switch control circuit for controlling on / off of switches provided in the first switching unit and the second switching unit. The transmitter of any one of claims 1, 2, 3, and 6, wherein the first and second switching stages are And a control signal from the switch control circuit, the time division communication system using a high power switch configured to operate by inverting and outputting an uplink high frequency signal by switching the receiver. The method of claim 1, 2, 3, 6, wherein the transmitting end first switching unit, Receives a control signal from the switch control circuit to at least one switch to turn on / off the uplink high frequency signal output from the first output port of the first coupler to output to the first input port of the second coupler Time division communication system using a high power switch characterized in that. The method of claim 1, 2, 3, 6, wherein the transmitting end second switching unit, Receives a control signal from the switch control circuit to at least one switch to turn on / off the uplink high frequency signal output from the second output port of the first coupler to output to the second input port of the second coupler Time division communication system using a high power switch characterized in that. The method of claim 1, 2, 3, 6, wherein the first and second coupler, It consists of an input port to which a high frequency signal is input, first and second output ports each of which is divided and outputted at a predetermined ratio, and an isolation port to which a first termination resistor is connected. Time division communication system using a high-power switch characterized in that the power is divided by a predetermined ratio and output to the first output port and the second output port, respectively, the reverse power and unnecessary signals are output to the isolation port to be extinguished. The method of claim 1, 2, 3, 6, wherein the first and second coupler, Time division communication system using a high-power switch, characterized in that the high-frequency signal power input thereto is a 3dB coupler that is output in half. 7. The first coupler of claim 1, 2, 3, and 6, wherein the first coupler comprises: an input port to which a high frequency signal is input; 2 output ports, and an isolation port to which the first termination resistor is connected, the high frequency signal inputted to the input port is divided into a predetermined ratio and output to the first output port and the second output port, respectively. Time division communication system using a high-power switch, characterized in that the unnecessary signal is output to the isolation port to be extinguished. The method of claim 1, 2, 3, 6, wherein the second coupler is a first and second input port to which a high frequency signal is input, respectively, an output port to which the power is added and output; Consisting of an isolation port to which the second termination resistor is connected, And a high frequency signal input to the first and second input ports, respectively, to be output through an output port, and the reverse power and unnecessary signals are output to the isolation port to be extinguished.