A wideband transmitter/receiver arrangement for transmitting and receiving electromagnetic waves, wherein said transmitter/receiver arrangement comprises: a digital arbitrary waveform generator AWG connected to a transmitter, wherein said waveform generator is configured to generate an arbitrary waveform within a given bandwidth, an antenna arrangement configured to emit a transmitter signal, and to receive an incident signal, a receiver configured to receive a receiver signal, an analogue isolator connected to said antenna arrangement, said transmitter, and said receiver, wherein said analogue isolator is adapted to route said transmitter signal from said transmitter to said antenna arrangement, and said incident signal from said antenna arrangement to said receiver, and to isolate said transmitter signal from said receiver signal, wherein said receiver is adapted to cancel any residual transmitter signal in said receiver signal by means of at least one digital model (6, 7, 17) of at least said isolator, said antenna arrangement, and said transmitter, said transmitter/receiver arrangement further comprises a first subtraction unit, which is configured to subtract a first cancellation signal from said receiver signal received from said isolator, said first cancellation signal received from said at least one digital model (6, 7) is configured to correspond to a predicted effect on said waveform of at least said transmitter, said isolator and said antenna arrangement, characterized in that said transmitter/receiver arrangement further comprises a second subtraction unit, which is configured to subtract a second cancellation signal from a signal received from an output of said first subtraction unit, said second cancellation signal received from said at least one digital model is configured to correspond to at least a predicted effect on a transmitter noise generated in said transmitter of at least said isolator and said antenna arrangement. a digital arbitrary waveform generator AWG connected to a transmitter, wherein said waveform generator is configured to generate an arbitrary waveform within a given bandwidth, an antenna arrangement configured to emit a transmitter signal, and to receive an incident signal, a receiver configured to receive a receiver signal, an analogue isolator connected to said antenna arrangement, said transmitter, and said receiver, wherein said analogue isolator is adapted to route said transmitter signal from said transmitter to said antenna arrangement, and said incident signal from said antenna arrangement to said receiver, and to isolate said transmitter signal from said receiver signal, wherein said receiver is adapted to cancel any residual transmitter signal in said receiver signal by means of at least one digital model (6, 7, 17) of at least said isolator, said antenna arrangement, and said transmitter, said transmitter/receiver arrangement further comprises a first subtraction unit, which is configured to subtract a first cancellation signal from said receiver signal received from said isolator, said first cancellation signal received from said at least one digital model (6, 7) is configured to correspond to a predicted effect on said waveform of at least said transmitter, said isolator and said antenna arrangement, said transmitter/receiver arrangement further comprises a second subtraction unit, which is configured to subtract a second cancellation signal from a signal received from an output of said first subtraction unit, said second cancellation signal received from said at least one digital model is configured to correspond to at least a predicted effect on a transmitter noise generated in said transmitter of at least said isolator and said antenna arrangement.