FIELD: communication technology.
SUBSTANCE: described technical result is achieved due to the first filter unit included in the signal processing apparatus filtering the second signal received by the first power amplifier in order to obtain a first sub-signal from a first frequency band and a second sub-signal from a second frequency band; the second filter unit filters the fourth signal received by the second power amplifier in order to obtain n sub-signals, wherein said n sub-signals include at least a third sub-signal from a third frequency band; the combiner unit combines the first sub-signal and i sub-signals in the n sub-signals based on a preset condition in order to obtain a first combined signal; the communication module sends the first combined signal using the first port and sends the second sub-signal using the second port.
EFFECT: effectively avoided problem of PIM (passive intermodulation) and reduced number of used antenna ports.
10 cl, 7 dwg
