BOOSTER

摘要

A booster device which amplifies received waves and transmits the amplified received waves is composed of a reception antenna, a carrier synthesizer, a transmitter, a transmission antenna, and a parameter controller. The carrier synthesizer generates a replica signal by multiplying a canceling signal by a cancel parameter, combines the replica signal with the received signal in at least one of a radio frequency band, an intermediate frequency band, and a base band to synthesize a signal, and generates a base-band synthesized signal from the synthesized signal. The transmitter demodulates the base-band synthesized signal and generates a transmission signal and a canceling signal by using the demodulated signal. The parameter controller determines the cancel parameters such that the power of the base-band synthesized signal is low based on the base-band synthesized signal and the canceling signal, and gives the parameter to the carrier synthesizer.