KR20080086777A - M/w repeater using complex frequency band - Google Patents

Abstract

A composite microwave repeater system is provided to increase an amplifying efficiency by using a feed forward circuit without mounting a high-priced amplifier. A VCTCXO is mounted in a remote M/W(Microwave) unit and extracts a synchronization signal by being controlled by a voltage to synchronize a doner RF unit(100) and a doner M/W unit(200), a remote M/W unit and a remote RF unit. An FA DET circuit unit(120) is mounted in the doner RF unit and selects only each FA included in a communication signal through an MCU. Converters(130,190) are mounted in the doner RF unit and the remote RF unit and extract only an actual service signal from a frequency of an FA after an interval where the FA exists in the communication signal is recognized by the MCU. A feed forward circuit unit is mounted in the donor M/W unit and the remote M/W unit, combines noise of the communication signal with out-of-phase to cancel it out.

Description

Complex microwave relay system {M / W REPEATER USING COMPLEX FREQUENCY BAND}

Figure 1a is a block diagram showing a schematic view of the donor RF unit and the donor M / W unit of a conventional M / W relay system.

1B is a block diagram showing a schematic configuration of a remote M / W unit and a remote RF unit of a conventional M / W repeater system.

Fig. 2A is a block diagram showing a schematic configuration of a donor RF unit and a donor M / W unit of a complex frequency band repeater according to the present invention.

Figure 2b is a block diagram showing a schematic configuration of a remote M / W unit and a remote RF unit of the complex frequency band repeater according to the present invention.

3 schematically shows a FA DET circuit arrangement of a donor RF unit according to the present invention.

Giving block diagram.

4 schematically shows a converter of a donor RF unit and a remote RF unit according to the present invention.

Block diagram.

Figure 5a is a donor RF unit according to the present invention by selecting only the service frequency

Drawing showing the transmission.

Figure 5b restores the service frequency received by the remote RF unit according to the present invention

Drawing to show that.

6 is a feed forward of a donor M / W unit and a remote M / W unit according to the present invention.

Block diagram schematically showing a circuit device.

FIG. 7 is a view illustrating setting a band by selecting a serviced band as 40 MHz, 20 MHz, 10 MHz, and 5 MHz according to the present invention. FIG.

<Explanation of symbols for the main parts of the drawings>

100: donor RF unit 105: filter

110, 135, 185, 195, 225, 240, 255, 270: AMP

120: FA DET circuit device 123: Filter

125: FA DET circuit 130, 190: converter

200: Donor M / W unit 140, 220: MUX

150: DC / DC converter

155, 205: Bias Tee 160: pilot signal device

165, 221, 331, 432: Modem signaling device

170: OCXO 124, 231: Mixer

240 ': Feed forward circuit device 300: Remote M / W unit

400: Remote RF Unit 180, 280, 380, 480: MCU

241: PATH1 242: PATH2

241-4: CPL2 241-5: 2nd Delay

243: HYB2 242-4: AM3

242-3: PM2 242-2: Delay2

245: PATH3 245-1: delay3

230, 235, 255, 265, 315, 320, 360, 355: Filter

450: VCTCXO

The present invention relates to a complex microwave relay system, and more particularly, a complex microcomputer capable of fast synchronization without time delay, selecting and delivering only a real service signal, and compensating for signal distortion to improve amplification efficiency. A wave relay system.

In general, relay signals include code division multiple access (CDMA), wideband code division multiple access (WCDMA), and wibro signals. CDMA is a typical signal transmission method of 2G (generation), WCDMA is a representative signal transmission method of 3G (generation), and the WiBro system that communicates using the WiBro signal has a wireless mobile Internet that can use a high-speed Internet service while moving. In other words, if the WiBro mobile station is installed, it is a wireless Internet service in the 2.3 GHz band that allows the Internet to be used freely in a moving car or subway.

1A is a block diagram showing a schematic view of a donor RF unit and a donor M / W unit of a conventional M / W repeater.

FIG. 1B is a block diagram showing a schematic configuration of a remote M / W unit and a remote RF unit of a conventional M / W repeater.

1A and 1B, a conventional invention includes a donor system comprising an antenna for receiving a signal, a donor RF unit 10 and a donor M / W (microwave) unit 20 for selecting and transmitting a received signal; The remote system includes a remote M / W unit 30 and a remote RF unit 40.

The donor RF unit 10 receives a forward signal from a base station through a receiving end via a wireless or RF cable. The forward signal is filtered through the input filter 10-5 and amplified to a constant level through the first stage AMP 11. The forward signal is converted into a predetermined signal through the converter 13, and a modem signal and a pilot signal according to the pilot signal device 16 and the modem signal device 16-5 are loaded on the forward signal. Amplified and transmitted to the donor M / W unit 20 via the coaxial cable via the Bias Tee (15-5) through the MUX (14).

In addition, the forward signal input from the donor RF unit 10 in the donor M / W unit 20 is input to the MUX 22 to separate the Modem signal and the Pilot signal through the Bias Tee 20-5. Modem signal is transmitted to Modem and Pilot signal is supplied to PLL (Phase Locked Loop). The service signal except for the pilot signal and the modem signal is mixed with the PLL signal through the first stage AMP 22-5 and the filter 23. The service signal is filtered by the output filter 24-5 via the filter 23-5 and the rear end AMP 24, and wirelessly to the antenna of the remote M / W unit 30 through the M / W antenna. Is sent.

On the other hand, the forward signal wirelessly received from the donor M / W unit 20 in the remote M / W unit 30 is received by the M / W antenna and passes through the first stage AMP 31 via the Filter 30-5. Is amplified. The amplified forward signal is mixed with the reference frequency signal of the PLL through the filter 31-5 and converted into an IF or RF frequency signal for transmission to the remote RF unit 40. In addition, the forward signal is filtered through the filter 32 and amplified by the rear end AMP 32-5. Here, the amplified forward signal is transmitted to the remote RF unit 40 through the RF coaxial cable passing through the MUX 33.

In addition, the IF or RF signal, which is a forward signal received from the remote M / W unit 30 in the remote RF unit 40, is separated into a predetermined signal through the MUX 41 through the bias teeth 40-5, and the first stage The AMP 42 is input to the converter 43 to restore the service band of the frequency of the identified FA. Here, the MUX 41 generates a 10 MHz reference clock by separating a pilot signal, which is a synchronization signal, from the IF or RF signal, and then supplies it to the remote M / W unit 30 via a Bias Tee 40-5. The OCXO 45 extracts a synchronization signal and supplies it to the converter 43. Then, the forward signal is filtered through the filter 44 via the rear stage AMP 43-5 and then transmitted to the personal terminal.

However, the donor system composed of the donor RF unit and the donor M / W unit and the remote system composed of the remote M / W unit and the remote RF unit do not simultaneously transmit 2G, 3G, and wibro. Accordingly, there has been a problem in that relay devices satisfying diversified communication signals such as 2G, 3G, and wibro are being developed. In addition, since the relay device does not use a method of selecting and transmitting only a signal that is actually serviced, a signal band cannot be widely used, and it is difficult to increase a transmission speed.

In addition, due to the initial stabilization time of the OCXO it is difficult to extract the fast synchronization signal, there is a problem that the synchronization of the communication signal of each unit of the relay device is delayed.

In addition, the rear end AMP, which is essentially provided in the relay device to improve the transmission gain efficiency of the communication signal, has a problem in that its amplification function is deteriorated.

Therefore, by selecting only the actual service signal in order to use the service signal band widely, there is a need for an apparatus that synchronizes these communication signals and improves transmission gain efficiency while transmitting diversified communication signals such as 2G, 3G, and wibro. .

An object of the present invention is to provide a complex microwave relay system for shortening the synchronization time of each unit by using a voltage controlled synchronization device.

Another object of the present invention is to select and transmit only the service frequency by using a signal detection method and a variable converter method to select and transmit only the actual service signal to transmit a complex frequency band such as 2G, 3G, wibro It is to provide a complex microwave relay system that has been improved to be widely used and to increase transmission speed.

Another object of the present invention to provide a complex microwave relay system having a circuit device that can compensate for the distortion of the signal to improve the transmission gain efficiency.

In order to achieve the above object, the composite microwave relay system of the present invention includes a filter for filtering a communication signal and amplifying the signal to a constant level in order to convert a relay signal between a base station and a mobile station into an IF or RF signal and an M / W signal. M / W repeater system comprising a donor system including a donor RF unit and a donor M / W unit having an AMP and a MUX and an MCU controlling the devices, and a remote system including a remote M / W unit and a remote RF unit. A VCTCXO mounted on the remote M / W and controlled by a voltage to extract a synchronization signal; A FA DET circuit device mounted on the donor RF unit and selecting and detecting each FA included in the communication signal; A converter mounted on the donor RF unit and a remote RF unit and transmitting a frequency of the identified FA only an actual service signal after identifying a section in which the FA exists among the communication signals through the MCU; And a feed forward circuit device mounted on the donor M / W unit and the remote M / W unit to combine and cancel noise out of phase.

Hereinafter, the composite microwave relay system of the present invention will be described in detail with reference to FIG. 2.

Figure 2a is a block diagram showing a schematic configuration of the donor RF unit and the donor M / W unit of the complex microwave relay system according to the present invention.

Figure 2b is a block diagram showing a schematic configuration of a remote M / W unit and a remote RF unit of the complex microwave relay system according to the present invention.

As shown in Figures 2a and 2b, the complex microwave relay system of the present invention is largely output from the donor system (100, 200) and the donor system that receives the frequency signal of the base station and converts it into M / W signal, etc. The remote system 300, 400 converts the M / W signal into a predetermined frequency.

In addition, the present invention provides a mobile communication and digital TV, DMB (Code Division Multiple Access (CDMA), Wideband CDMA (3G), TRS (Trunked Radio System), GSM (Global System for Mobile), etc.) It is a base station of wireless network including wireless Internet such as Digital Multimedia Broadcasting (WBRO), Wibro, and World Interoperability for M / W Access (WiMAX), wireless protocol such as Internet Protocol Television (IPTV) and Broadband Convergence Network (BCN). The present invention relates to a complex microwave relay system for securing service of a subscriber station located in a shadow area outside of service coverage. In particular, the composite microwave relay system according to the present invention to be described later will be described only for 2G, 3G and WiBro, but is not limited thereto.

Hereinafter, a signal is transmitted from the donor RF unit 100 to the donor M / W unit 200, and a direction in which the signal is transmitted from the remote M / W unit 300 to the remote RF unit 400 is forward. The above components will be described on the assumption of the direction of the signal. Here, in the case of the direction of the reverse signal to the signal transmitted from the donor M / W unit 200 to the donor RF unit 100 is transmitted in the opposite direction of the forward signal and the signal is converted inverse, detailed description thereof will be omitted. .

Hereinafter, an operation sequence of the components of the units 100, 200, 300, and 400 will be described in detail with reference to FIGS. 2A and 2B.

The donor RF unit 100 receives a forward signal from a base station through a receiving end via a wireless or RF cable. The forward signal is filtered through the input filter 105, amplified to a predetermined level through the first stage AMP 110, and a corresponding frequency allocation (FA) is selected by the FA DET circuit device 120. The FA DET circuit device 120 is a device using a signal detection method that selects and delivers only a signal that is actually serviced, and the extracted FA location signal information is transmitted to the MCU 480 of the remote RF unit 400 to be described later. 3 will be described in detail below. The forward signal passes through the converter 130, leaving only the service band of the frequency of the identified FA and removing the zone where no signal exists. The converter 130 will be described in detail later with reference to FIG. 4. The modem signal and the pilot signal according to the pilot signal device 160 and the modem signal device 165 are carried on the forward signal and transmitted to the rear end AMP 135. The OCXO (Oven controlled crystal oscillators) 170 extracts a synchronization signal and supplies it to the converter 130. Thereafter, the forward signal is amplified through the rear end AMP 135 and transmitted to the donor M / W unit 200 via the coaxial cable via the Bias Tee 155 through the MUX 140.

In addition, the forward signal received from the donor RF unit 100 in the donor M / W unit 200 is input to the MUX 22 through the bias teeth 205 and separated into a modem signal and a pilot signal. Is transmitted to the modem signal device 221 and the pilot signal is supplied to the PLL 222. The service signal except for the pilot signal and the modem signal passes through the first stage AMP 225 and the filter 230 and is mixed by the mixer 231 and the signal of the PLL 222 that receives the 10 MHz reference frequency of the 10 MHz device 223. The filter 235 is filtered by the output filter 245 via the filter 235 and the rear stage AMP 240, and is wirelessly transmitted to the antenna of the remote M / W unit 300 through the M / W antenna. Here, the rear stage AMP 240 will be described in detail later with reference to FIG. 6.

Meanwhile, the forward signal wirelessly received from the donor M / W unit 200 in the remote M / W unit 300 is received by the M / W antenna and amplified through the first stage AMP 310 via the input filter 305. do. In addition, the amplified forward signal is mixed by the mixer 318 and the signal of the PLL 316 received the 10MHz reference frequency of the 10MHz device 330 via the filter 315 is converted into an IF or RF frequency signal. In addition, the forward signal is filtered through the filter 320 and amplified by the rear end AMP 325. The amplified forward signal is transmitted to the remote RF unit 400 by the RF coaxial cable through the Bias Tee 340 through the MUX 330.

In addition, the IF or RF signal, which is a forward signal received from the remote M / W unit 300 in the remote RF unit 400, is separated into a predetermined signal through the MUX 410 through the bias 405. Here, the MUX 410 generates a 10 MHz reference clock by separating a pilot signal, which is a synchronization signal, from the IF or RF signal, and supplies it to the remote M / W unit 300 via the Bias Tee 405. Then, an area where no signal exists while leaving only the service band of the frequency of FA identified by the converter 130 of the donor RF unit 100 which is input to the converter 430 via the ultra-short AMP 420 is removed. The passed signal restores the service band of the frequency of the identified FA to the original forward signal. In this case, the converter 430 operates in the reverse order of the operation order of the converter 130 of the donor RF unit 100 to restore the forward signal, and the FA position signal information extracted by the FA DET circuit device 120 includes the MCU. Received by 480. VCTCXO (Voltage Controlled X-tal Oscillator) 450 is controlled by voltage, and since the initial stabilization time is relatively shorter than OCXO controlled by heat, it is possible to extract a synchronization signal faster than the conventional OCXO method. In addition, although not shown in the drawing, a GPS (global positioning system) module may be installed in the donor RF unit 100 and the remote RF unit 400 and used as a synchronization signal of a service signal. The forward signal is filtered through the output filter 440 through the rear stage AMP 435 and then transmitted to the personal terminal (not shown).

The VCTCXO 450 is a device necessary for synchronizing each unit of the relay apparatus according to the present invention. When the VCTCXO 450 selects and transmits only a signal actually delivered in connection with a FA DET circuit apparatus and a converter of FIG. You can.

Figure 3 is a block diagram schematically showing the FA DET circuit arrangement of the donor RF unit according to the present invention.

4 is a block diagram schematically showing a converter of a donor RF unit and a remote RF unit according to the present invention.

FIG. 5A illustrates that the donor RF unit according to the present invention selects and transmits only a corresponding service frequency.

Figure 5b is a view showing to restore the service frequency received by the remote RF unit according to the present invention.

As shown in FIG. 3, the FA DET circuit device 120 includes a PLL 121 for generating a variable frequency, a Filter 123 for filtering the FA signal, and a Mixer 124 for mixing the variable frequency and FA signal. And a FA DET circuit 122 for detecting FA of the signal.

Specifically, the MCU 180 transmits the frequency level of the central portion (part A of FIG. 5A) of each FA signal 600 input through the AMP 110 to the variable PLL 121 and the FA DET circuit 125. Measurement is performed to determine whether or not the FA signal is present.

As shown in FIG. 4, the converter 130 of the donor RF unit 100 mixes each of the FA signals to reduce the IF frequency to the first variable PLL 131 and the FA signal frequency lowered to the IF frequency. A filter 132 for filtering out and removing a portion in which a signal does not exist (part B of FIG. 5B) leaving only a service band, and a second variable PLL 133 for varying and fixing a phase of the removed signal. Accordingly, only the frequency band 610 that is actually serviced may be selected from the band received by the base station using the variable PLL 131 as described above. In addition, instead of selecting only a specific frequency band using a general PLL, the variable PLLs 131 and 133 according to the present invention may be used to easily select a frequency band actually serviced.

Accordingly, the MCU 180 controls only the service frequency band to pass through the FA DET circuit device 120 and the converter 130. In addition, the MCU 180 of the donor RF unit 100 transmits the FA position signal information extracted by the FA DET circuit device 120 and the converter 130 to the MCU 480 of the remote RF unit 100.

As shown in FIG. 5A, the MCU of the donor RF unit 100 uses the signal band 600 received from the base station through the FA DET circuit device and the converter to remove the B region where no signal exists, thereby providing a signal of the actual frequency band. Only 610 is left to control.

As shown in FIG. 5B, the remote RF unit 400 may restore 630 the actual service frequency band 620 received from the donor RF unit to the original base station signal through the MCU and the converter.

Therefore, when selecting and transmitting only a signal that is actually serviced in connection with a FA DET circuit device and a converter, the VCTCXO of FIG. 2B can quickly synchronize each unit, and a feed forward circuit device, which will be described later, is a signal of each PATH by the VCTCXO. Amplification is performed without time delay so that each unit of the relay apparatus according to the present invention can easily transmit a service signal.

6 is a block diagram schematically illustrating a feed forward circuit device of a donor M / W unit and a remote M / W unit according to the present invention.

As shown in FIG. 6, the feed forward circuit 240 'of the donor M / W unit and the remote M / W unit combines the noise (or distortion components) of the amplifier in two or more PATHs at the final output in an inverse phase. This is a circuit device in which only the actual signal is amplified and output by being canceled out.

The feed forward circuit device 240 'is a PATH1 241 which divides and amplifies the input signal into 2nd delay and HYB2 (hybrid2) that amplifies the phase and level, and delays the input signal and adjusts the phase and level. PATH2 242 for transmitting harmonics to HYB1 (hybrid1) and PATH3 245 for receiving the signal attenuated by the HYB2 (hybrid1) and the signal of HYB1 (hybrid1) to remove the harmonics by anti-phase processing. do.

The PATH1 241 is a level device and phase devices 241-1 and 241-2 for removing harmonics, an AMP 241-3 for amplifying an input signal, and a 2nd Delay part and a HYB2 (hybrid2) for input signals. A second coupler 241-4 divided by &lt; RTI ID = 0.0 &gt;, &lt; / RTI &gt; and a 2nd Delay section 241-5 for matching delay with the signal of PATH2.

In addition, PATH2 includes a first coupler 242-1 for dividing an input signal into PATH1 and PATH2, Delay2 242-2 for adjusting the harmonic-removed signal to be out of phase, a level device for removing harmonics, and Phase apparatus 242-3, 242-4.

In addition, PATH3 is a Delay3 (245-1) for mapping the service frequency band switch to be equal to Delay2 through the MCU, a level device and a phase device (245-2, 245-3) for removing harmonics, and amplifies the signal. AMP 245-4.

Specifically, the input signal is divided into two signals, PATH1 241 and PATH2 242, by the first coupler Coupler1 242-1. Harmonics are removed from the PATH1 241 via the level device AM1 241-1 and the phase device PM1 241-2, and the amplification of the signal through the AMP 241-3 includes harmonics. The IM (Inter Modulation) component is divided into two signals through the second coupler 241-4. One signal is input to the 2nd Delay section 241-5, and the other signal passes through the HYB2 (hybrid2) 243, and attenuates at a predetermined rate, and is combined through the PATH2 242 output and the HYB1 244. Here, PATH2 242 removes the harmonic components of the input signal by adjusting the level device AM3 242-4 and the phase device PM2 242-3, and in Delay2 242-2, The delay of the frequency band is switched through the MCU to be in phase with the signal of the PATH1 241 to remove the input signal component, and leave only the IM component to transfer to the PATH3 245.

In addition, delay3 245-1 of PATH3 245 maps the corresponding frequency band selective switching to delay2 242-2 through the MCU to be out of phase with the signal coupled through HYB1 (hybrid1) 244. To match. The phase and level are adjusted to detect only harmonic components through the AM3 245-2 and the PM3 245-3 of the PATH3 245.

In addition, the PATH3 245 generates a harmonic signal and then reverse-phase-processes the sum of the signal of the PATH1 241 and the HYB3 246 to detect only the actual signal to remove the harmonic components. Referring to FIGS. 2A and 2B, the feed forward circuit devices 240 ′ and 325 ′ are connected to the rear end AMP 240 of the donor M / W unit 200 or the rear end AMP of the remote M / W unit 300. 325 is preferably included.

Therefore, in order to increase the efficiency of the final amplification stage, two or more PATHs are added to the existing feed forward circuit device without the need for expensive AMP, and a plurality of delays are further provided to facilitate the removal of the IM component. By using the feed forward circuit device 240 ', 325' to amplify the amplification efficiency of the complex microwave relay system according to the present invention can be improved.

In addition, the VCTCXO 450 of FIG. 2B can quickly synchronize each unit when the selected signal is only actually delivered in connection with the FA DET circuit device and the converter, and the feed forward circuit device 240 'is connected to the VCTCXO ( By the quick synchronization of 450), the module of the remote unit can be normally operated without time delay, so that each unit of the relay device according to the present invention can easily transmit a service signal. Service signals can be sent to each unit quickly.

FIG. 7 is a diagram illustrating setting a band by selecting a serviced band as 40 MHz, 20 MHz, 10 MHz, and 5 MHz according to the present invention.

The MCU of the donor M / W unit may calculate the band of FA of the generated M / W signal in advance and selectively set the band of the signal to transmit / receive with the remote M / W unit. For example, the MCU of the donor M / W unit mixes the signal amplified by the amplifying device in the mixer with the local frequency set in the variable PLL signal, so that the actual service band is 40 MHz (1 zone), 20 MHz (2 zone), It is programmed to select one or more bands from 10 MHz (3 zones) and 5 MHz (4 zones). That is, in the past, only one band required to service one signal was required, but by using the four selection bands described above, the corresponding bands corresponding to the respective FA bands of 2G, 3G, and wibro signals may be selected by the donor M /. One or more MCUs in the W unit can select and transmit data.

In conclusion, the amplification of the feed forward circuit device can be achieved without time delay by the fast synchronization of the VCTCXO according to the present invention, and the service signal transmission band actually used through the FA DET circuit device and the converter is selected and transmitted. Each unit of the relay apparatus according to the present invention can easily transmit a service signal to each other.

As described above, in the detailed description of the present invention, specific embodiments have been described, but various modifications are possible without departing from the scope of the present invention. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be defined by the claims below and equivalents thereof.

The composite microwave relay system of the present invention configured as described above has an effect that the area where no service signal exists in the donor RF unit is removed through the FA DET circuit and the converter so that only the signal of the actual frequency band remains. .

In addition, there is an effect that the amplification efficiency can be increased by using the feed forward circuit without having to install an expensive AMP to increase the efficiency of the final amplification stage in the donor M / W unit and the remote M / W unit.

In addition, there is an effect of extracting the synchronization signal using the VCTCXO in a relatively small time in the remote M / W unit.

Claims (6)

Donor RF including filter for filtering communication signal to convert communication signal between base station and mobile station to IF or RF signal and M / W signal, AMP to amplify the signal to constant level, MUX and MCU to control the devices In a M / W repeater system comprising a donor system including a unit and a donor M / W unit, and a remote system including a remote M / W unit and a remote RF unit, A VCTCXO mounted on the remote M / W and controlled by a voltage to extract a synchronization signal to synchronize the units; A FA DET circuit device mounted on the donor RF unit and selecting only each FA included in the communication signal through the MCU; A converter mounted on the donor RF unit and the remote RF unit and extracting only an actual service signal from the frequency of the identified FA after the section in which the FA exists among the communication signals is identified through the MCU; A feed forward circuit device mounted on a donor M / W unit and a remote M / W unit, and configured to cancel noise by synthesizing the noise out of the communication signals; Complex microwave relay system comprising a. The method of claim 1, The FA DET circuit device, PLL for generating a variable frequency, a filter for filtering the FA signal, a mixer for mixing the variable frequency and FA signal, and a FA DET circuit for detecting the FA of the signal system. The method according to claim 1 or 2, The FA DET circuit device, A complex microwave relay system, characterized by detecting 2G, 3G and WiBro signals. The method of claim 1, The converter, A first variable PLL for lowering each FA signal to an IF frequency; A filter for filtering to remove a portion in which a signal does not exist while leaving only a service band of a frequency of the FA; A second variable PLL for varying and fixing a phase of the filtered signal; Complex microwave relay system comprising a The method of claim 1, The feed forward circuit device, PATH1 divides the input signal into phases and levels, amplifies the 2nd Delay, and HYB2 attenuates the signal; PATH3 to remove the harmonics by receiving the received signal and the signal of the HYB1 anti-phase processing, PATH1 is A level device for removing harmonics and a phase device, an AMP for amplifying the input signal, a second coupler for dividing the input signal into a 2nd Delay section and a HYB2, and a 2nd Delay section for matching a delay with the signal of PATH2, PATH2 is A first coupler for dividing the input signal into PATH1 and PATH2, Delay2 for adjusting the harmonic-rejected signal to be out of phase, a level device for removing harmonics, and a phase field, PATH3 is And a delay device for mapping a service frequency band switch to be equal to Delay2 through a MCU, a level device and a phase device for removing harmonics, and an AMP for amplifying the signal. The method of claim 1, In the case of the forward signal, the MCU of the donor M / W unit is programmed to select at least one of 40 MHz, 20 MHz, 10 MHz, and 5 MHz of the FA band of the generated M / W signal to set a transmission / reception band so as to set the remote M / W. The composite microwave relay system, characterized in that for transmitting and receiving with the unit.

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