A wireless communication network schedules multiple components carriers on a same frequency band to user equipment (UE) for transmitting wireless signals. The network may indicate to the UE when to use each carrier, and the UE my switch between transmitting on each carrier. The UE may transmit multiple different signals on each carrier. In particular, the UE may include a local oscillator (LO) that generates a first frequency of a first carrier, and couple the LO to the transmission paths when transmitting using the first carrier. The UE may then cause the LO to generate a second of a second carrier, and couple the LO to the transmission paths when transmitting using the second carrier. Additionally or alternatively, the UE may include a second LO that generates the second frequency, and couple the second LO to the transmission paths when transmitting using the second carrier.