A coupling methodology and circuit arrangements to provide multi-frequency simultaneous power measurement. In one example, a wireless device front-end apparatus includes a plurality of antenna swap switches each connected to first and second antenna contacts, and a plurality of electromagnetic couplers each having an input port to receive a input signal of a unique frequency, a coupled port that provides a coupled signal based on the input signal, an output port connected to one of the plurality of antenna swap switches, and an isolation port. The apparatus further includes a termination network including a plurality of termination loads, and an output switch network configured to selectively connect the coupled port of each electromagnetic coupler to a coupler output bank to provide the coupled signals at the coupler output bank, and to selectively connect the isolation port of each electromagnetic coupler to one of the plurality of termination loads.