1. A method of wireless communication performed by a user equipment (UE), comprising:determining that multiple uplink channels are to be transmitted contemporaneously via different antennas on a component carrier;
determining a respective transmit power for multiple uplink communications associated with the multiple uplink channels based at least in part on determining that the multiple uplink channels are to be transmitted contemporaneously via the different antennas on the component carrier and based at least in part on a set of priority rules that identifies a respective priority for the multiple uplink communications,
wherein a total transmit power to be used for the multiple uplink communications satisfies a maximum transmit power of the UE; and
transmitting the multiple uplink communications using the respective transmit power,
wherein, in a symbol in which a first uplink communication and a second uplink communication of the multiple uplink communications do not overlap, the first uplink communication is transmitted using a scheduled transmit power, and
wherein, in a symbol in which the first uplink communication and the second uplink communication overlap, the first uplink communication is transmitted using a first respective transmit power and the second uplink communication is transmitted using a second respective transmit power that is less than or equal to a difference between the maximum transmit power of the UE and the first respective transmit power.