Patent ID: 11876561
Assignee: YAZAKI CORPORATION
Field: Telecommunications (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 2:
3. An RoF (Radio over Fiber) transceiver for relaying and transmitting a radio signal in radio communication between a base station and a terminal via a fiber optic transmission line, the RoF transceiver comprising:
an antenna unit configured to transmit and/or receive the radio signal;
a first amplifier configured to amplify a reception signal and generate a first electrical signal;
an electrical-optical converter configured to convert the first electrical signal amplified by the first amplifier into a transmission optical signal and transmit the transmission optical signal to the fiber optic transmission line;
an optical-electrical converter configured to convert a reception optical signal received via the fiber optic transmission line into a second electrical signal;
a second amplifier configured to amplify the second electrical signal and generate a transmission signal; and
a signal processor configured to input the transmission signal amplified by the second amplifier, wherein
the signal processor includes:
a branch unit configured to branch the transmission signal and acquire a branch signal;
a detection unit configured to detect the branch signal and acquire a voltage value of the branch signal;
a determination unit configured to compare the voltage value of the branch signal with a threshold voltage previously stored in a storage unit and determine whether the voltage value of the branch signal is equal to or greater than the threshold voltage; and
a power source controller configured to control turning on and off of a power source for the first amplifier according to a determination result determined by the determination unit.