Provided is a multimode transmitter apparatus that, in a case of using different paths to process modulated signals, can suppress the signal overlapping or loss that would occur during a path switching. In the apparatus, a baseband modulating unit (110), which supports a plurality of modulation schemes using different modulation bandwidths, outputs either first modulated signals or second modulated signals. An LPF (130-1) and an LPF (130-2), which have delay amounts Δtd1 and Δtd2, perform signal processings of the first and second modulated signals, respectively. A timing control unit (160) sets the modulation schemes and the switching timings of the modulation schemes. The timing control unit (160) sets, on the basis of the switching timings and the delay amounts Δtd1 and Δtd2, the switching timings of a modulated signal selecting switch (120) and a signal processing delay adjusting switch (140) to be different from each other.