RADIO FREQUENCY INTERFERENCE CANCELLER AND RADIO FREQUENCY INTERFERENCE CANCELLATION METHOD

Disclosed are a radio frequency interference canceller and a radio frequency interference cancellation method. The radio frequency interference canceller comprises a controller, a first power amplifier, a digital filter, a second power amplifier, a first analog-to-digital converter, a second analog-to-digital converter, a first digital-to-analog converter, a second digital-to-analog converter, a splitter, and a combiner; the splitter is in gating connection with a transmitter power amplifier and the first power amplifier, an output end of the splitter is connected to a transmitting antenna, and a coupling end of the splitter is connected to the second analog-to-digital converter; the controller, the first digital-to-analog converter, and the first power amplifier are sequentially connected; the second analog-to-digital converter, the digital filter, the second digital-to-analog converter, and the second power amplifier are sequentially connected, the second power amplifier is further connected to a coupling e