Millimeter-wave repeater for intermediate frequency band transmission

A millimeter-wave repeater comprising:

• a donor input/output unit configured to:
• separate a downlink signal and an uplink signal of a millimeter-wave radio signal,
• perform low-noise amplification on an input downlink signal,
• transmit the amplified downlink signal to a donor channel filter unit, and
• output the uplink signal input from the donor channel filter unit in an assigned level;
• the donor channel filter unit configured to:
• filter the amplified downlink signal via a band pass filter,
• convert the filtered amplified downlink signal into an intermediate frequency signal by using a frequency mixer,
• filter the intermediate frequency signal via a low-band pass filter,
• perform channel filtering on the filtered intermediate frequency signal through a plurality of band pass filters,
• transmit the channel-filtered intermediate frequency signal to a donor multiplex transmission unit, and
• convert the uplink signal from the donor multiplex transmission unit into a signal of a millimeter-wave band by using the frequency mixer and transmit the signal of the millimeter-wave band to the donor input/output unit, the donor channel filter unit including a reference signal unit for generating and transmitting a reference frequency signal;
• the donor multiplex transmission unit including a multiplexer for coupling the channel-filtered intermediate frequency signal and the reference frequency signal and a communication signal, and configured to transmit the uplink signal to the donor channel filter unit;
• a transmission unit configured to transmit a signal;
• a server multiplex transmission unit including a downlink multi-distribution unit configured to separate, from the downlink signal input to the transmission unit, a modem signal for communication and the reference frequency signal for synchronization with a phase synchronization circuit, and an uplink transmission unit configured to transmit the uplink signal via a server channel filter unit to the transmission unit;
• the server channel filter unit configured to convert an intermediate frequency downlink signal input to the server multiplex transmission unit into a signal in a millimeter-wave band by using the frequency mixer and transmit the signal in the millimeter-wave band to a server input/output unit, perform frequency mixing on an uplink frequency of the server input/output unit and convert a mixed signal into an intermediate frequency, and perform channel filtering on a converted signal and transmit a filtered signal to the server multiplex transmission unit;
• and
• the server input/output unit configured to:
• output the downlink signal output from the server channel filter unit in an assigned level, and
• perform low-noise amplification on the uplink signal, and
• transmit the amplified signal to the server channel filter unit.